620A “DewK” Thermo-Hygrometer User’s Guide January 2003 Rev. 1, 3/13 © 2003-2013 Fluke Corporation. All rights reserved. Specifications are subject to change without notice. All product names are trademarks of their respective companies.
LIMITED WARRANTY AND LIMITATION OF LIABILITY Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is one year and begins on the date of shipment. Parts, product repairs, and services are warranted for 90 days.
Table of Contents 1 Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2.1 1.2.2 1.3 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Authorized Service Centers. . . . . . . . . . . . . . . . . . . . . .
6.2 Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.3 6.4 Sensor Configuration . . . . . . . . . . . . . . . . . . . . . . . . 20 Power Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 6.5 6.6 Power On Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . 20 Display Contrast. . . . . . . . . . . . . . . . . . . . . . . . . . . 20 6.7 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 6.8 6.9 Alarm Screen . . . . . . . . . . .
7.5.3 Comm Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 7.5.3.1 7.5.3.2 7.5.3.3 7.5.4 7.5.5 Serial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 RF (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 System Info . . .
8.2.1.46 8.2.1.47 8.2.1.48 8.2.1.49 8.2.1.50 8.2.1.51 8.2.1.52 8.2.1.53 8.2.1.54 8.2.1.55 8.2.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 . 90 . 90 . 90 . 90 . 90 . 91 . 91 . 91 . 91 Measurement Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 8.2.2.1 8.2.2.2 8.2.2.3 8.2.2.4 8.2.2.5 8.2.2.6 8.2.2.7 8.2.2.8 8.2.2.9 8.2.2.10 8.2.2.11 8.2.2.12 8.2.2.13 8.2.2.14 8.2.2.15 8.2.2.
8.2.4.8 8.2.4.9 8.2.4.10 8.2.4.11 8.2.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 . 104 . 104 . 104 ROUTe:CLOSe? . ROUTe:CLOSe . ROUTe:OPEN? . ROUTe:OPEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.2.8.32 8.2.8.33 8.2.8.34 8.2.8.35 8.2.8.36 8.2.8.37 8.2.8.38 8.2.8.39 8.2.9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 . 114 . 114 . 114 . 114 . 114 . 114 . 114 Date and Time Commands . . . . . . . . . . . . . . . . . . . . . . . . . . 115 8.2.9.1 8.2.9.2 8.2.9.3 8.2.9.4 8.2.9.5 8.2.9.
Calibration Procedure . . . . . . . . . . . . . . . . . . . . . 133 9.1 Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 9.2 9.3 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 Calibration Points . . . . . . . . . . . . . . . . . . . . . . . . . 133 9.4 Temperature and Humidity Measurement Errors . . . . . . . . . 134 9.5 Temperature and Humidity Adjustments . . . . . . . . . . . . . 135 10 Maintenance . . . . . . . . . . . . . . . . . . . . . . . .
Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Figure 35 Figure 36 Figure 37 Figure 38 Figure 39 Figure 40 viii Front Panel . . . . . . . . . . . Top Panel . . . . . . . . . . . . Right and Left Side View . . .
Figure 41 Figure 42 Figure 43 Figure 44 Figure 45 Figure 46 Figure 47 Figure 48 Date Time . . . . . Comm Setting . . . Serial . . . . . . . . RF Settings . . . . . Lan Settings . . . . Password . . . . . . System Info . . . . Serial Cable Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables Table 1 Table 2 Table 3 Table 4 Table 4 Table 4 Table 4 Table 4 Table 4 Table 4 x International Electrical Symbols . . . . . . . . . . . . . . . . . . . . . 1 Statistics Zone Field Types. . . . . . . . . . . . . . . . . . . . . . . . 34 Approximate Data Storage Capacity . . . . . . . . . . . . . . . . . . . 41 Alphabetical List Commands . . . . . . . . . . . . . . . . . . . . . . 72 Alphabetical List Commands continued . . . . . . . . . . . . . . . . . 73 Alphabetical List Commands continued . . .
1 Before You Start Symbols Used 1 1.1 Before You Start Symbols Used Table 1 lists the International Electrical Symbols. Some or all of these symbols may be used on the instrument or in this manual.
1620A “DewK” Thermo-hygrometer User’s Guide Symbol Description Canadian Standards Association OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC1010-1 refers to the level of Impulse Withstand Voltage protection provided. Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be supplied from the fixed installation. Examples include household, office, and laboratory appliances.
1 Before You Start Authorized Service Centers • The instrument battery can present danger if not handled properly. To avoid the risk of exposure to dangerous substances or explosion, immediately remove the battery and discontinue use if it leaks or becomes damaged. Never allow the battery to be shorted, heated, punctured, or dropped. If the instrument is physically damaged, immediately remove the battery to insure that it does not become shorted.
20A “DewK” Thermo-hygrometer User’s Guide Telefax: +1.801.763.1010 E-mail: support@hartscientific.com Fluke Nederland B.V. Customer Support Services Science Park Eindhoven 5108 5692 EC Son NETHERLANDS Phone: +31-402-675300 Telefax: +31-402-675321 E-mail: ServiceDesk@fluke.nl Fluke Int'l Corporation Service Center - Instrimpex Room 2301 Sciteck Tower 22 Jianguomenwai Dajie Chao Yang District Beijing 100004, PRC CHINA Phone: +86-10-6-512-3436 Telefax: +86-10-6-512-3437 E-mail: xingye.han@fluke.com.
1 Before You Start Authorized Service Centers • Model Number • Serial Number • Voltage • Complete description of the problem 5
2 Introduction 2 Introduction Fluke’s Hart Scientific Division’s 1620A is a low-cost, high-accuracy, digital thermo-hygrometer. Its unique combination of features makes it suitable for a wide variety of applications from laboratory to industrial ambient measurement. Features of the thermo-hygrometer include: • Two channels measure ambient temperature to ±0.125 C and %RH to ±1.
3 Specifications and Environmental Conditions Specifications 3 3.1 Specifications and Environmental Conditions Specifications Temperature Range 0°C to 50°C Temperature Accuracy (“H” Model) 16°C to 24°C (60.8°F to 75.2°F): ±0.125°C (±0.225°F) [calibrated] 0°C to 16°C (32°F to 60.8°F): ±0.5°C (±0.9°F) [uncalibrated typical] 24°C to 50°C (75.2°F to 122°F): ±0.5°C (±0.9°F) [uncalibrated typical] Temperature Accuracy (“S” Model) 15°C to 35°C (59°F to 95°F): ±0.25°C (±0.
1620A “DewK” Thermo-hygrometer User’s Guide 3.2 Size (DewK)HxWxD 125 x 211 x 51 mm (4.9 x 8.3 x 2.0 in) Size (Probes) 79 mm H x 19 mm dia. (3.1 x 0.75 in) Weight 0.7 kg (1.5 lb.) Environmental Conditions Although the instrument has been designed for optimum durability and trouble-free operation, it must be handled with care. The instrument should not be operated in an excessively dusty, dirty, or wet environment.
4 Quick Start Unpacking 4 Quick Start This section briefly explains the basics of setting up and operating your thermo-hygrometer. 4.1 Unpacking Carefully unpack the thermo-hygrometer and inspect the instrument to make sure all components are present and in satisfactory condition.
1620A “DewK” Thermo-hygrometer User’s Guide hours, typically. However, without external power, the display will be inoperable. 4.5 Connect the Sensor The sensor for channel 1 connects to the socket at the top-right, and the sensor for channel 2, if used, connects to the socket on the right side. Either sensor may be used with an optional extension cable up to 100 feet (30 meters) in length. 4.6 Connect the Power Source The thermo-hygrometer draws power from the provided power adapter.
5 Parts and Controls Front Panel 5 Parts and Controls The functions of the various features of the thermo-hygrometer are described below. 5.1 Front Panel The front panel buttons Enter/Menu, Up/Down/Left/Right Arrows, and Exit are used to select and alter the functions of the thermo-hygrometer (see Figure 1). Figure 1 Front Panel The buttons have different functions depending on whether the main screen or the menu system is displayed.
1620A “DewK” Thermo-hygrometer User’s Guide Enter/Menu - This button is used to select a menu item, to accept a choice, or save changes to a parameter. Exit - This button is used to return from a menu or window or cancel changes to a parameter. Pressing the Exit button for a second or so returns from most any menu, menu function, or window back to the main screen. ud - These buttons are used to move among menu items or parameters.
5 Parts and Controls Left Side Panel An optional extension cable may be used to allow the sensor to be placed in a remote location. Figure 3 Right and Left Side View 5.4 Left Side Panel The left side panel consists of, from top to bottom, the RS-232 port, Ethernet LAN port, alarm port, and DC power socket. RS-232 Port - The RS-232 port can be used to connect the instrument to a computer and remotely control and retrieve data from the instrument using a serial RS-232 interface (see Sections 7.5.3.
1620A “DewK” Thermo-hygrometer User’s Guide bottom LED indicates link state: off for no connection, amber for 10 Mbps, and green for 100 Mbps. The top LED indicates link activity: off for no activity, amber for half duplex, and green for full duplex. Alarm Port - The alarm port allows external alarm indicators to be connected to the instrument and activated when an alarm event occurs (see Section 7.4.1). The port outputs 0V when inactive and 12V DC (up to 20 mA) when active. The jack accepts a 2.
5 Parts and Controls Quick Buttons Serial Label - The serial label shows the instrument model and serial number. Figure 4 Back Panel (RF option shown) 5.6 Quick Buttons When the main screen is displayed, the buttons have the following functions: Enter/Menu - This button is used to display the menu options. Exit - This button is used to display the alarm window.
1620A “DewK” Thermo-hygrometer User’s Guide 5.8 Accessories The following accessories are available to compliment either the high accuracy or standard thermo-hygrometer readout. • 2626-S Spare Sensor/Standard Accuracy • 2627-S Spare Sensor Kit includes a standard accuracy probe (2626-S), sensor case (2607), sensor wall mount bracket (2630), and 25-foot (7.
6 General Operation DC Power Source 6 General Operation This section explains basic operation of the thermo-hygrometer. Detailed operation of the thermo-hygrometer is explained in Sections 7 and 8. Section 7 explains the menu structure and the functions available in the menu structure and Section 8 explains the communications interface for operating the thermo-hygrometer remotely. 6.1 DC Power Source The thermo-hygrometer requires 12V DC to operate.
1620A “DewK” Thermo-hygrometer User’s Guide 2. Turn the thermo-hygrometer over to access the rear battery compartment. Press down slightly on the battery cover and slide it out to remove it. 3. Remove the old battery if one is in place by lifting it up at the bottom and pulling it out. 4. Slide the new battery in at an angle, observing the proper polarity so the terminals mate correctly, then press the bottom of the battery down into the holder. 5. Replace the battery cover. 6.
6 General Operation Display 6.7 Display The thermo-hygrometer display is originally configured with six default display layouts enabled. The user can enable and configure any of the 16 display layouts to show a variety of data in numerical or graphical format (see Section 7.2.2, Display Layout). Enabled display layouts can be quickly selected from the main screen using the l and r buttons. 6.
1620A “DewK” Thermo-hygrometer User’s Guide The sensor contains a memory device that stores information about the sensor and automatically transfers this data to the thermo-hygrometer when the sensor is attached. This ensures that the settings used to measure and calculate temperature and humidity always match the sensor being used. Caution: Sensors are fragile devices that can be easily damaged by mechanical shock, overheating, and exposure to fluids or dust.
6 General Operation Sensors ties. Thus, it is recommended that the sensor be located where there is minimal air currents. The self-heating of the sensor could also be altered by nearby objects that insulate the sensor from the air. Keep adequate air space around the sensor. The self-heating of the sensor takes a few minutes to stabilize after the power to the thermo-hygrometer is switched on or the sensor is attached. For best results, allow 15 minutes for the sensor to settle after applying power.
7 Menu Functions 7 Menu Functions Figure 5 Main Display Selecting the Enter/Menu button from the front panel accesses the main menu of the thermo-hygrometer. The main menu consists of the submenus: CHANNEL, DISPLAY, DATA, ALARM, and SYSTEM. Most of the menu options may be password-protected to prevent them from being changed (see Section 7.5.
1620A “DewK” Thermo-hygrometer User’s Guide Each submenu has its own set of functions. The Enter/Menu button is used to select and execute menu choices. The ud buttons are used to scroll through the functions. The Exit button is used to return from a function to the previous menu. The Exit button may be pressed and held to quickly return to the main screen. 7.
7 Menu Functions Channel Menu and humidity values displayed are averaged over the measurement period. When average is off, the displayed values are instantaneous measurements. RATE T, rate time, determines the time interval over which the measurements are used to calculate the rate of change, and is selectable between 30 seconds, 1, 2, 5, 10, 15, 20, 30, 45 minutes, or 1 hour. The temperature rate is displayed in the RATE T field of a STATS display zone.
1620A “DewK” Thermo-hygrometer User’s Guide cannot be edited. The sensor ID cannot be set for a channel without a sensor attached. The sensor ID is stored in the sensor, not in the thermo-hygrometer. Figure 9 Sensor ID Use the lr and ENTER buttons to select the sensor identification to change. The lr buttons are used to move among character positions and the buttons are used to change the character. Letters, numeric digits, space and underscore can be used. Press the Enter button to save the setting.
7 Menu Functions Channel Menu desired location. It uses the sensor serial number to identify the sensor. To exchange a different sensor, the sensor lock must be set to OFF. Figure 10 Sensor Lock Use the ud buttons to select the sensor to lock. The lr buttons are used to select ON or OFF. Press the Enter button to save the setting and exit. Press the Exit button to cancel any changes and exit to the menu. 7.1.4 Sensor Cal The SENSOR CAL function allows the sensor parameters to be edited.
1620A “DewK” Thermo-hygrometer User’s Guide the setting and exit. Press the Exit button to cancel any changes and exit to the menu. Figure 12 Sensor Channel Select Figure 11 Sensor Cal The lr buttons are used to edit the parameter value. The ud buttons are used to move between parameters.
7 Menu Functions Display Menu rameters have been edited. The message ‘STORE VALUES’ is displayed. Press the Enter button to save the new settings. The values are stored in the sensor. Press the Exit button to cancel any changes and exit to the menu. 7.2 Display Menu The DISPLAY menu provides functions for configuring the display. The functions that appear in this menu are DISPLAY SETTING, DISPLAY LAYOUT, FIELD DATA, GRAPH SCALE, and DISPLAY RESET. Figure 13 Display Menu 7.2.
1620A “DewK” Thermo-hygrometer User’s Guide darkens the screen. The contrast may also be adjusted from the main screen by using the ud buttons (see Section 5.1, Front Panel). Figure 14 Display Setting The lr buttons are used to select the parameter setting. The ud buttons are used to scroll between each parameter. Press the Enter button to change and save the new settings. Press the Exit button to cancel any changes and exit to the menu. 7.2.
7 Menu Functions Display Menu The enabled layouts can be viewed by pressing the lr buttons when the main screen is displayed. Figure 15 Display Layout Except for blank and time types, zones require that a sensor number be selected. Data for the specified sensor number is displayed in the zone. The options for the zone type and descriptions for each follow: Blank: No data is displayed. TIME: The current time and date are displayed.
1620A “DewK” Thermo-hygrometer User’s Guide and to the right of tick marks. Tick marks with labels are drawn with short continuous lines, and tick marks without labels are drawn with dotted lines. Graphs are replotted when a different display layout is selected, a display layout's settings are changed, or graph scale settings are changed. Data for the graphs are extracted from recorded data in memory. If recording is disabled, graphs cannot be replotted and will appear empty until new data is collected.
7 Menu Functions Display Menu Field Type Description T DELT temperature delta (difference from the other channel) RHUM most recent relative humidity measurement H RATE humidity rate of change H AVE relative humidity statistical mean H STD relative humidity standard deviation H MIN minimum relative humidity H MAX maximum relative humidity H SPR relative humidity spread (maximum minus minimum) H N number of humidity statistical samples H RMAX maximum relative humidity rate of change H A
1620A “DewK” Thermo-hygrometer User’s Guide Figure 16 Field Data Use the lr buttons to change each of the settings. Press Enter to save and continue to the next parameter. Press the Exit button to cancel any changes and exit to the menu. 7.2.4 Graph Scale The GRAPH SCALE function allows the selection of the graph settings for each zone (1, 2, 3, or 4). Graph settings for each zone are used in common among all display layouts. This may be password-protected (see Section 7.5.4, Password).
7 Menu Functions Display Menu DIVS from 1, 2, 4, 6, 8, 10 Figure 18 Graph Scale , Select Zone Figure 17 Graph Scale Use the Enter button to edit and save the new setting. Press Exit button to cancel any changes and exit to the menu. On the last parameter, press the Enter button to exit to the menu.
1620A “DewK” Thermo-hygrometer User’s Guide 7.2.5 Display Reset The DISPLAY RESET function allows all display layouts, field data settings and graph scale settings to be reset to original settings. This may be password-protected (see Section 7.5.4, Password). Figure 19 Display Reset Use the Enter button to reset the display settings. Press the Exit button to cancel any changes and exit to the menu. 7.3 Data Menu The DATA menu contains functions for recording measurement data and statistics.
7 Menu Functions Data Menu The functions that appear in this menu are DATA RECORD and DAILY STATS. Figure 20 Data Menu Use the ud buttons to select the menu. Press the Enter button to select the menu. Press the Exit button to cancel any changes and exit to the menu. When recording is enabled, measurements are stored in memory at the set period. The data is highly compressed digitally to achieve a high storage density.
1620A “DewK” Thermo-hygrometer User’s Guide The functions that appear in this menu are RECORD SETTING, DATA VIEW, DATA PRINT, DATA STORAGE, and DATA CLEAR. Figure 21 Data Record Use the ud buttons to select the menu. Press the Enter button to select the menu. Press the Exit button to cancel any changes and exit to the menu. 7.3.1.1 Record Setting The RECORD SETTING function allows you to select what is to be recorded and how often the recording occurs. This may be password-protected (see Section 7.5.
7 Menu Functions Data Menu Caution: When the memory has been filled, the oldest block of data will be discarded to allow new data to be recorded. Measurement storage capacity can range between 28 hours and 2 years depending on the record period and enabled channels. Refer to Table 3, Approximate Data Storage Capacity.
1620A “DewK” Thermo-hygrometer User’s Guide 7.3.1.2 Data View The DATA VIEW function allows viewing recorded data in NUMERIC or GRAPHIC format. Figure 23 Data View, Begin Time Figure 24 Data View, Numeric Format The numeric mode displays the data in a numeric format. The BEGIN parameter specifies the starting date and time of the data to display.
7 Menu Functions Data Menu tons to adjust the start date and time. The format of the start date is according to D FORM in the SYSTEM, DATE-TIME menu function (see Section 7.5.2, Date Time). The format of the start time is 24 hour format. Press the Enter button to display the data for the selected starting date and time. Use the ud buttons to scroll through the data (you can go back two screens) and the lr buttons to scroll among data blocks. Press the Exit button to cancel any changes and exit to the menu.
1620A “DewK” Thermo-hygrometer User’s Guide format of the start date is according to D FORM in SYSTEM, DATE-TIME (Section 7.5.2). The format of the start time is 24 hour format. Figure 25 Data Print The lr buttons are used to change the parameters. Press the Enter button to save the new setting. Press the Exit button to cancel any changes and exit to the menu. 7.3.1.4 Data Storage The DATA STORAGE function allows viewing the status of the data memory.
7 Menu Functions Data Menu space used in the record block index. The BEGIN parameter is the date of the earliest data. The END parameter is the date of the latest data. Figure 27 Data Storage Press the Enter or Exit button to exit. 7.3.1.5 Data Clear The DATA CLEAR function clears the data collected. This function may be password protected (see Section 7.5.4, Password).
1620A “DewK” Thermo-hygrometer User’s Guide Press the Enter button to clear the data. Press the Exit button to cancel any changes and exit to the menu. Caution: Using this function will erase all recorded data and make it irretrievable. 7.3.2 Daily Stats The DAILY STATS menu can be used to record measurement statistics, such as average, maximum, minimum, maximum rate, etc., for each day. Up to 60 days of statistics are stored.
7 Menu Functions Data Menu 7.3.2.1 Stats Setting The STATS SETTING function sets the daily statistics recording options. The AUT REC enables (ON) or disables (OFF) automatic recording of the statistics. The REC TIM may be set from 00:00 to 23:00. The REC TIM function sets the hour just prior to which the statistics are automatically recorded when AUT REC is ON. If REC TIM is 00:00, the statistics are recorded after the last measurement of the day.
1620A “DewK” Thermo-hygrometer User’s Guide 7.3.2.2 Stats View The STATS VIEW function is used to view daily statistics. Select a date and measurement channel and type. The average, standard deviation, minimum, maximum, spread, number, maximum rate, and alarm are displayed for the channel and measurement type. Figure 30 Stats View The lr buttons are used to change the setting parameters. Press the Enter button to save the new setting. Press the Exit button to cancel any changes and exit to the menu.
7 Menu Functions Data Menu 7.3.2.3 Stats Print The STATS PRINT function allows daily statistics to be printed over the serial port. Figure 31 Stats Print Press the Enter button to save the new setting. Press the Exit button to cancel any changes and exit to the menu. 7.3.2.4 Stats Reset The STATS RESET function resets current statistics. Statistics will then be based on measurements made from this time forward.
1620A “DewK” Thermo-hygrometer User’s Guide eration. If the Enter button is pressed the stats are reset. If the Exit button is pressed the operation is canceled. Figure 33 Stats Reset 7.3.2.5 Stats Clear The STATS CLEAR function clears all daily statistics stored in memory. After pressing the Enter button, a WARNING message will appear requesting a confirmation of the operation. If the Enter button is pressed the stats are cleared. If the Exit button is pressed the operation is cancled.
7 Menu Functions Alarm Menu 7.4 Alarm Menu The ALARM menu allows alarm event and indicator settings to be set and allows viewing of alarm events. The functions that appear in this menu are ALARM SETTING, SENSOR ALARM, SYSTEM ALARM, and ALARM VIEW. Alarm settings may be password protected (see Section 7.5.4, Password). To enable alarms, first enable alarm indicators with ALARM SETTING as described below.
1620A “DewK” Thermo-hygrometer User’s Guide When the PORT setting is ON, the alarm port outputs an electrical signal to indicate that an alarm event has occurred. Under normal conditions the output will be 0V. When an alarm event occurs, and PORT is ON, the output will be driven at approximately 12V DC. The output remains active until alarms are reset (see Section 7.4.4, Alarm View). The alarm port is disabled while operating on internal battery power.
7 Menu Functions Alarm Menu To set alarm parameters, a channel number and measurement type (T or H) must first be selected using lr and ENTER buttons. Figure 36 Sensor Alarm The PARAM parameter is selectable between 1/T, 1/H, 2/T, 2/H. The 1 and 2 refer to the channel selected, T is temperature and H is humidity. The ud buttons are used to select the menu option. The lr buttons are used to change the parameter setting. Press the Enter button to save the new setting.
1620A “DewK” Thermo-hygrometer User’s Guide When the BATTERY alarm is turned ON, an alarm occurs when the battery charge is low. When the POWER alarm is ON, an alarm occurs when power is disconnected, drops out, or is switched off. The beep indicator, if also enabled, will sound every 20 seconds when the instrument is operating from internal battery power, until external power is restored or the battery is drained. Figure 37 System Alarm The ud buttons are used to select the menu option.
7 Menu Functions System Menu and latest alarm events are shown below the list of alarm events (space permitting). Figure 38 Alarm View Press the Enter button to clear the alarms. Press the Exit button to retain any alarms and exit to the menu. 7.5 System Menu The SYSTEM menu provides access to the general settings for the system such as temperature unit, date and time, the communication port settings, password settings, and viewing the system information.
1620A “DewK” Thermo-hygrometer User’s Guide menu are SYSTEM SETTING, DATE TIME, COMM SETTING, PASSWORD, and SYSTEM INFO. Figure 39 System Menu The ud buttons are used to select the menu option. The lr buttons are used to change the parameter settings. Press the Enter button to save the new setting. Press the Exit button to cancel any changes and exit to the menu. 7.5.1 System Setting The SYSTEM SETTING function allows you to change the temperature measurement unit.
7 Menu Functions System Menu When the measurement unit is changed and the Enter button is selected, the next measurement is displayed in the new measurement unit. Figure 40 System Setting The lr buttons are used to change the setting parameters. Press the Enter button to save the new setting. Press the Exit button to cancel any changes and exit to the menu. 7.5.2 Date Time The DATE TIME function is used for setting the time-of-day clock, time format, date, and date format.
1620A “DewK” Thermo-hygrometer User’s Guide When this function is selected available parameters are HOUR, MINUTE, SECOND, T FORM, DAY, MONTH, YEAR, D FORM, and DAYL S. Figure 41 Date Time The HOUR parameter allows the user to set the time-of-day clock hour (0 through 23). The MINUTE parameter allows the user to set the time-of-day clock minutes (0 through 59). The SECOND parameter allows the user to set the time-of-day clock seconds (0 through 59).
7 Menu Functions System Menu One possible effect is with recorded daily stats. If the record time is reached twice within one day due to a time shift backwards, daily stats will be recorded twice for the same date. This can happen if the daily stats record time is set to 00:00, the daylight saving mode is set to Europe, and a fall backwards time shift occurs. Since the time 00:00 occurs twice for one day, two daily stats records will be created for the same day.
1620A “DewK” Thermo-hygrometer User’s Guide used for communicating with a computer, printer, or other equipment. The Thermo-Hygrometer includes a serial (RS-232) port, 802.15.4 (ZigBee) wireless (optional), and Ethernet LAN port. To edit the settings for a specific port it must first be selected. The selections are SERIAL, RF, LAN, and ERRORS. The ERRORS setting allows the user to view any error messages stored in the error queue. Once an error has been viewed, it is removed from the error queue.
7 Menu Functions System Menu computer attached through a serial RS-232 cable. (See Section 8 for more information and for a list of commands.) Figure 43 Serial The BAUD parameter allows the user to select the baud rate for communications on this port. The user may choose between 1200, 2400, 4800, 9600, 19200, 38400, and 57600. The default baud rate is 9600.
1620A “DewK” Thermo-hygrometer User’s Guide 7.5.3.2 RF (optional) The RF wireless interface allows the instrument to receive and respond to commands from a remote computer through a radio-frequency wireless link. (See Section 8 for a list of commands.) The computer must be attached to an RS-232 or USB RF modem. See Section 5.8, Accessories, for more information. These accessories can be purchased separately.
7 Menu Functions System Menu CHANNEL selects the frequency channel on which the RF transceiver operates. For two devices to communicate, they must use the same channel. Make sure the CHANNEL setting is set to the same number as the modem with which this instrument will be communicating. Frequencies used by RF communication may also be used by other types of equipment, with the potential for interference.
1620A “DewK” Thermo-hygrometer User’s Guide instrument can also serve a simple HTML or web page that allows readings to be observed with a web browser. Figure 45 Lan Settings Selecting LAN for the PORT option in the COMM SETTING menu function presents a window containing the LAN device settings, which include ENABLE, DHCP, ADDRESS, GATEWAY, MASK, COMMAND, and PAGE. There might be a delay of several seconds, when DHCP is enabled, as the dynamic address settings are read from the LAN port device.
7 Menu Functions System Menu even with th password. When using Hart Scientific’s LogWare III Software, COMMAND must be ON for full functionality. With applications where extra security is important and settings need not be changed, COMMAND should be OFF. PAGE, when ON, allows the instrument to serve an HTML web page. In applications where extra security is important, PAGE can be set to OFF disabling the HTML server.
1620A “DewK” Thermo-hygrometer User’s Guide the ENTER button to accept the password or press the EXIT button to cancel any changes and exit to the menu. Figure 46 Password By default the password is set to “1620” when the instrument ships from the factory. We recommend the user changes the default password to secure the password-protected settings. NOTE: Keep your password in a secure location.
7 Menu Functions System Menu The COMM parameter allows the user to turn the password protection of the communications settings ON or OFF Press the lr buttons to highlight the digit to change. Use the buttons to scroll through the numbers 0-9. Press the Enter button to save the new setting. Press the Exit button to cancel any changes and to move to the next parameter or exit to the menu. Note: Keep your password in a secure location and do not forget the password. 7.5.
8 Digital Communications Interface Overview 8 8.1 Digital Communications Interface Overview The communication features allow an external device, such as a computer, to communicate with the Thermo-Hygrometer readout to receive measurement data and control operating settings. Communication is accomplished by issuing commands to the Thermo-Hygrometer through an RS-232, RF wireless (optional), or Ethernet LAN interface. 8.1.
1620A “DewK” Thermo-hygrometer User’s Guide 8.1.2 RF Wireless (optional) The RF wireless interface allows the instrument to receive and respond to commands from a remote computer through a radio-frequency wireless link. The computer must be attached to an RS-232 or USB RF modem. See Section 5.8, Accessories, for more information. These accessories can be purchased separately.
8 Digital Communications Interface Commands have alternate forms. Most mnemonics have a long form that is more readable and a short form consisting of three or four characters that is more efficient. A mnemonic may end with a numeric suffix that specifies one of a set of independent function blocks such as input channel data paths. If a numeric suffix is omitted when a particular block must be specified, an error is generated (“Header suffix out of range”).
1620A “DewK” Thermo-hygrometer User’s Guide Table 4 Alphabetical List Commands Command *CLS *ESE? *ESE |MIN|MAX|DEF *ESR? *IDN? *OPT? *RST Description Clear the status registers Returns the Standard Event Status Enable register Sets the Standard Event Status Enable register Returns the Standard Event Status register Returns the instrument identification string that indicates the manufacturer, model number, serial number, and firmware version Returns configuration options Sets the instrument operatin
8 Digital Communications Interface Commands Alphabetical List Commands continued Command ALARm:RHUMidity:RATE:LIMit |MIN|MAX|DEF ALARm:RHUMidity:SENSor? ALARm:RHUMidity:SENSor:ENABle? ALARm:RHUMidity:SENSor:ENABle ALARm:RHUMidity:UPPer? ALARm:RHUMidity:UPPer:ENABle? ALARm:RHUMidity:UPPer:ENABle ALARm:RHUMidity:UPPer:LIMit? ALARm:RHUMidity:UPPer:LIMit |MIN|MAX|DEF ALARm:TEMPerature:LOW? ALARm:TEMPerature:LOW:ENABle? ALARm:TEMPera
1620A “DewK” Thermo-hygrometer User’s Guide Alphabetical List Commands continued Command ALARm:TEMPerature:UPPer:ENABle ALARm:TEMPerature:UPPer:LIMit? ALARm:TEMPerature:UPPer:LIMit |MIN|MAX|DEF ALARm:TIME:FIRSt? ALARm:TIME:LAST? CALibrate:ALERt? CALibrate:ALERt CALibrate:DATe:CALibrate? CALibrate:DATe:CALibrate (,,) CALibrate:DATe:DUE? CALibrate:DATe:DUE (,,) CALibrate:EXPiration? Description Refer To
8 Digital Communications Interface Commands Alphabetical List Commands continued Command CALCulate:PARameter:RESolution |MIN|MAX|DEF DATa:DSTat:ENABle? Description Sets the display resolution) Refer To Section 8.2.2.12 Returns the state of the daily stats recording enable Section 8.2.3.
1620A “DewK” Thermo-hygrometer User’s Guide Alphabetical List Commands continued Command INITiate:CONTinous? MEASure? [] Description Returns the continuous state (always 1) Returns the temperature and humidity measurements for the specified channel Refer To Section 8.2.4.2 Section 8.2.2.16 READ? [] Section 8.2.2.
8 Digital Communications Interface Commands Alphabetical List Commands continued Command SYSTem:COMM:RADio:MODem SYSTem:COMM:RADio:OPTion? SYSTem:COMM:RADio:PAN? SYSTem:COMM:RADio:PAN SYSTem:COMM:RADio:SIGNal? Description Sets the RF transceiver modem address Returns RF wireless installation status Returns the RF transceiver PAN ID address Sets the RF transceiver PAN ID address Returns the RF transceiver signal strength Refer To Section 8.2.8.8 Section 8.2.8.9 Section 8.2.8.10 Section 8.2.8.
1620A “DewK” Thermo-hygrometer User’s Guide Alphabetical List Commands continued Command SYSTem:PASSword:ALARm SYSTem:PASSword:CDISable SYSTem:PASSword:CENable SYSTem:PASSword:CENable:STATe? SYSTem:PASSword:COMM? SYSTem:PASSword:NEW |DEF Description Enables or disables the alarm settings password protection Disables password-protected commands Enables password-protected commands Returns the current password-protected state Returns the state of the communication settings password protect
8 Digital Communications Interface Commands Password Commands - commands for enabling and disabling the password, for setting the password, and for checking the password protection state. Status Commands - commands to report the status and condition of the instrument. Each section provides the command structure (long and short format), a description of the command purpose, a command example, an example of what the command returns (as applicable to query commands), and notes specific to the command.
1620A “DewK” Thermo-hygrometer User’s Guide • Unrecognized commands or commands with incorrect syntax or invalid parameters generate error messages that are placed in the error queue (see Section 8.2.7.6, SYST:ERR?). 8.2.1 Alarm Commands 8.2.1.1 ALARm:BATTery? Indicates whether a battery alarm event has occurred. Example: ALAR:BATT? Response: 1 A value of 1 is returned if a battery alarm event has occurred. A value of 0 is returned if a battery alarm event has not occurred. 8.2.1.
8 Digital Communications Interface Commands The parameter turns the alarm beep enable on (1 or ON) or off (0 or OFF). This command may be password protected (see Section 8.2.10, Password Commands). 8.2.1.6 ALARm:CLEar Clears the alarm events. Example: ALAR:CLE The alarm clear command clears the alarm events. 8.2.1.7 ALARm:DATE:FIRSt? Returns the date of the first alarm event. Example: ALAR:DATE:FIRS? Response: 2003,8,10 The response is returned in the format, ,,.
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.1.11 ALARm:PORT? Returns the alarm port state. Example: ALAR:PORT:ENAB? Response: 0 A value of 1 is returned if the alarm port is active (12V), 0 otherwise (0V). 8.2.1.12 ALARm:PORT Sets the alarm port state. Example: ALAR:PORT:ENAB 1 The parameter activates (1 or ON) or deactivates (0 or OFF) the alarm port, overriding the state determined by alarms. This command may be password protected (see Section 8.2.10, Password Commands). 8.2.1.
8 Digital Communications Interface Commands Response: 0 A value of 1 is returned if the power loss alarm is enabled. A value of 0 is returned if the power loss alarm is disabled. 8.2.1.17 ALARm:POWer:ENABle Sets the state of the power loss alarm enable. Example: ALAR:POW:ENAB 1 The parameter turns the power loss alarm on (1 or ON) or off (0 or OFF). This command may be password protected (see Section 8.2.10, Password Commands). 8.2.1.
1620A “DewK” Thermo-hygrometer User’s Guide Example: ALAR:RHUM1:LOW:LIM? Response: 20.00 The RHUMidity suffix, , specifies the channel (1 or 2). Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or default value respectively. 8.2.1.22 ALARm:RHUMidity:LOWer:LIMit |MIN|MAX|DEF Sets the lower humidity alarm limit for the specified channel in %RH. Example: ALAR:RHUM1:LOW:LIM 25.00 The RHUMidity suffix, , specifies the channel (1 or 2).
8 Digital Communications Interface Commands This command may be password protected (see Section 8.2.10, Password Commands). 8.2.1.26 ALARm:RHUMidity:RATE:LIMit? [MIN|MAX|DEF] Returns the humidity rate alarm limit for the specified channel in %RH per hour. Example: ALAR:RHUM1:RATE:LIM? Response: 5 The RHUMidity suffix, , specifies the channel (1 or 2). Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or default value respectively. 8.2.1.
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.1.30 ALARm:RHUMidity:SENSor:ENABle Sets the state of the humidity sensor alarm for the specified channel. Example: ALAR:RHUM1:SENS:ENAB 1 The RHUMidity suffix, , specifies the channel (1 or 2). The parameter turns the humidity sensor alarm on (1 or ON) or off (0 or OFF). This command may be password protected (see Section 8.2.10, Password Commands). 8.2.1.
8 Digital Communications Interface Commands The RHUMidity suffix, , specifies the channel (1 or 2). Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or default value respectively. 8.2.1.35 ALARm:RHUMidity:UPPer:LIMit |MIN|MAX|DEF Sets the upper humidity alarm limit for the specified channel in %RH. Example: ALAR:RHUM1:UPP:LIM 65.00 The RHUMidity suffix, , specifies the channel (1 or 2).
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.1.39 ALARm:TEMPurature:LOWer:LIMit? [MIN|MAX|DEF] Returns the lower temperature alarm limit for the specified channel in degrees C or F. Example: ALAR:TEMP1:LOW:LIM? Response: 18.00 The TEMPerature suffix, , specifies the channel (1 or 2). The value returned is always in the current temperature units (C or F). Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or default value respectively. 8.2.1.
8 Digital Communications Interface Commands 8.2.1.43 ALARm:TEMPurature:RATE:ENABle Sets the state of the temperature rate alarm enable for the specified channel. Example: ALAR:TEMP1:RATE:ENAB 1 The TEMPerature suffix, , specifies the channel (1 or 2). The parameter turns the temperature rate alarm on (1 or ON) or off (0 or OFF). This command may be password protected (see Section 8.2.10, Password Commands). 8.2.1.
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.1.47 ALARm:TEMPurature:SENSor:ENABle? Returns the state of the temperature sensor alarm enable for the specified channel. Example: ALAR:TEMP1:SENS:ENAB? Response: 0 The TEMPerature suffix, , specifies the channel (1 or 2). A value of 1 is returned if the temperature sensor alarm is enabled. A value of 0 is returned if the temperature sensor alarm is disabled. 8.2.1.
8 Digital Communications Interface Commands The TEMPerature suffix, , specifies the channel (1 or 2). The parameter turns the upper temperature alarm on (1 or ON) or off (0 or OFF). This command may be password protected (see Section 8.2.10, Password Commands). 8.2.1.52 ALARm:TEMPurature:UPPer:LIMit? [MIN|MAX|DEF] Returns the upper temperature alarm limit for the specified channel in degrees C or F. Example: ALAR:TEMP1:UPP:LIM? Response: 28.
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.2 Measurement Commands The measurement commands are used to read information on the statistical calculations and for reading the most recent measurement for a specified channel. 8.2.2.1 CALCulate:AVERage:CLEar Resets all running statistics for both channels. Example: CALC1:AVER:CLE This command may be password protected (see Section 8.2.10, Password Commands). 8.2.2.
8 Digital Communications Interface Commands 8.2.2.6 CALCulate[]:PARameter[]:AVERage[]:DATA? Returns the specified statistical calculation for the specified channel. This is the same as the CALCulate,chn.:PARameter:AVERage? command (see 8.2.2.4). 8.2.2.7 CALCulate[]:PARameter:AVERage:TYPE? Returns the name of the specified statistical type for the specified channel.
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.2.11 CALCulate[]:PARameter:RESolution? [MIN|MAX|DEF] Returns the display resolution. Example: CALC:PAR1:RES? Response: 3 The PARameter suffix, , specifies either temperature resoution (1) or relative humidity resolution (2). The value returned indicates the number of decimal places. Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or default value respectively. 8.2.2.
8 Digital Communications Interface Commands If the extended format setting is OFF (see Section 8.2.2.15, FORMat:TDST:STAT), the measurement values are returned in a comma-delimited format as follows: ,[,,] The temperature values are always in the current temperature units. The humidity values are always in %RH.
1620A “DewK” Thermo-hygrometer User’s Guide Response: 25.576,29.30 or Response: 1,1,25.629,C,29.32,%,2003,9,16,11,2,38 Example 2: MEAS? Response: 25.582,29.32,26.341,37.96 or Response: 1,1,25.629,C,29.29,%,2,0,C,0,%,2003,9,16,11,1,42 This command is equivalent to the FETC? command. 8.2.2.17 READ? [] Returns a comma delimited list of the most recent measurements for the specified channel or for both channels. Example 1: READ? 1 Response: 25.576,29.30 or Response: 1,1,25.629,C,29.
8 Digital Communications Interface Commands Example: DAT:DST:ENAB 1 The parameter turns the daily statistics recording on (1 or ON) or off (0 or OFF). This command may be password protected (see Section 8.2.10, Password Commands). 8.2.3.3 DATa:DSTatistics:HOUR? [MIN|MAX|DEF] Returns the daily statistics recording time. Example: DAT:DST:HOUR? Response: 12 Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or default value respectively. 8.2.3.
1620A “DewK” Thermo-hygrometer User’s Guide Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or default value respectively. 8.2.3.8 DATa:DSTatistics:RHOur |MIN|MAX|DEF Sets the daily statistics reset time. Example: DAT:DST:RHO 0 The parameter specifies the hour for the daily statistics reset time. Specifying MIN, MAX, or DEF parameter sets the daily statistics reset time to the minimum, maximum, or default value respectively.
8 Digital Communications Interface Commands The parameter specifies the daily statistics record number. If none is specified, record 1 is assumed. The response is returned in the format, ,,. 8.2.3.13 DATa:DSTatistics:RECord:ETIMe? [] Returns the daily statistics recording end time. Example: DAT:DST:REC:ETIM? Response: 23,59,59 The parameter specifies the daily statistics record number. If none is specified, record 1 is assumed.
1620A “DewK” Thermo-hygrometer User’s Guide Example: DAT:REC:FEED:RHUM1? Response: 1 The RHUMidity suffix , specifies the channel (1 or 2). A value of 1 is returned if the humidity recording for the specified channel is enabled. A value of 0 is returned if the humidity recording for the specified channel is disabled. 8.2.3.18 DATa:RECord:FEED:RHUMidity Sets the state of the humidity recording enable for the specified channel.
8 Digital Communications Interface Commands 8.2.3.22 DATa:RECord:OPEN? Returns the number of bytes of memory in the open set of data. Example: DAT:REC:OPEN? Response: 1203 This command must be preceeded by the DATa:REC:OPEN command (see Section 8.2.3.23) which is used to open a set of data using a date/time range. The response to this command indicates the number of unread bytes in the date/time range specified by the last DATa:RECord:OPEN command.
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.3.25 DATa:RECord:TIME? [MIN|MAX|DEF] Returns the data recording period in seconds. Example: DAT:REC:TIME? Response: 120 Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or default value respectively. 8.2.3.26 DATa:RECord:TIME |MIN|MAX|DEF Sets the data recording period setting in seconds. Example: DAT:REC:TIME 60 The parameter indicates the number of seconds between recording readings to memory.
8 Digital Communications Interface Commands The parameter turns the measurement averaging on (1 or ON) or off (0 or OFF). This command may be password protected (see Section 8.2.10, Password Commands). 8.2.4.5 SENSor:LOCK? Returns the sensor lock state for the given channel number. Example: SENS1:LOCK? Response: 1 A value of 1 is returned if the sensor lock is enabled. A value of 0 is returned if the sensor lock is disabled. 8.2.4.
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.4.9 SENSor:STATe? Returns the sensor status for the specified channel. Example: SENS1:STAT? Response: 0 The SENSor suffix, , specifies the channel (1 or 2). The response to this command is a number that indicates the state of the sensor on the specified channel. A value of 0 indicates a sensor is connected and reading properly. The table below details all other possible values.
8 Digital Communications Interface Commands ment period to 2 seconds. This command may be password protected (see Section 8.2.10, Password Commands). 8.2.5 Channel Commands The channel commands are used for switching channels on and off. 8.2.5.1 ROUTe:CLOSe? Returns the state of the specified channel. Example: ROUT:CLOS? 1 Response: 0 The parameter specifies the channel (1 or 2). A value of 1 is returned if the specified channel is on.
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.6.1 CALibrate:ALERt? Returns the state of the sensor calibration expired alert enable for the specified channel. Example: CAL1:ALER? Response: 0 The CALibrate suffix, , specifies the channel (1 or 2). A value of 1 is returned if the calibration alert is enabled for the specified channel. A value of 0 is returned if the calibration alert is disabled for the specified channel. 8.2.6.
8 Digital Communications Interface Commands 8.2.6.6 CALibrate:DATE:DUE (,,) Sets the sensor calibration due date for the specified channel. Example: CAL1:DATE:DUE 2004,9,17 The CALibrate suffix, , specifies the channel (1 or 2). The , , and parameters must all be specified. The parameter is a four-digit number. The parameter is a one or two-digit number (1 to 12). The parameter is a one or two-digit number (1 to 31).
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.6.11 CALibrate:PARameter:SCALe Sets the sensor calibration scale parameter for the specified channel. Example: CAL2:PAR:SCAL1 0.002 The CALibrate suffix, , specifies the channel (1 or 2). The SCALe suffix, , specifies either temperature (1) or humidity (2). The parameter specifies the value for the scale parameter. This command is password protected (see Section 8.2.10, Password Commands). 8.2.
8 Digital Communications Interface Commands • Stops auto logging. • Sets the statistical functions. 8.2.7.4 SYSTem:BEEP Produces a short beep from the speaker. 8.2.7.5 SYSTem:BOOT:VERSion? Returns the boot ROM version. Example: SYST:BOOT:VERS? Response: 0.31 8.2.7.6 SYSTem:ERRor? Returns a message from the system error queue. Example: SYST:ERR? Response: 0,"No error" The error queue may contain up to ten messages. The messages are reported in the order they occurred.
1620A “DewK” Thermo-hygrometer User’s Guide The response is either C for Celsius or F for Fahrenheit. 8.2.7.10 UNIT:TEMPerature Sets the system temperature unit. Example: UNIT:TEMP C The parameter must be either C or CEL for Celsius or F or FAR for Fahrenheit. The *RST command sets the temperature unit to Celsius. 8.2.8 Communication Interface Commands The communication interface commands are used for querying and setting serial RS-232 settings, RF wireless settings, and LAN settings. 8.
8 Digital Communications Interface Commands 8.2.8.9 SYSTem:COMMunicate:RADio:OPTion? Returns the RF wireless installation, 0 (not installed) or 1 (installed). 8.2.8.10 SYSTem:COMMunicate:RADio:PAN? Returns the RF transceiver network PAN ID address. 8.2.8.11 SYSTem:COMMunicate:RADio:PAN Sets the RF transceiver network PAN ID address applied when the RF transceiver is subsequently enabled or reset. The address has the range 0 to 65535. 8.2.8.
1620A “DewK” Thermo-hygrometer User’s Guide A value of 1 is returned if serial port echo (duplex) is ON. A value of 0 is returned if serial port echo (duplex) is OFF. 8.2.8.17 SYSTem:COMMunicate:SERial:FDUPlex Sets the serial port echo (duplex) setting. Example: SYST:COMM:SER:FDUP 1 The parameter turns serial port echo (duplex) mode on (1 or ON) or off (0 or OFF). A baud rade of 57600 suspends echo (full duplex). 8.2.8.
8 Digital Communications Interface Commands Response: 10 Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or default value respectively. 8.2.8.23 SYSTem:COMMunicate:SERial:TIMe |MIN|MAX|DEF Sets to serial port sample period setting in seconds. Example: SYST:COMM:SER:TIM 120 The parameter can be one of the following values: 1, 2, 5, 10, 15, 30, 60, 120, 300, 600, 900, 1200, 1800, or 3600.
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.8.31 SYSTem:COMMunicate:SOCKet:GATeway? Returns the LAN port default gateway IP address. 8.2.8.32 SYSTem:COMMunicate:SOCKet:GATeway Sets the LAN port default gateway IP address applied, if DHCP is off, when the LAN port is subsequently enabled or reset. The address has the format 255.255.255.255. 8.2.8.33 SYSTem:COMMunicate:SOCKet:HTML? Returns 1 if the HTML web page is enabled, 0 otherwise. 8.2.8.
8 Digital Communications Interface Commands Response: 90 The returned value indicates the current percentage of charge remaining in the battery. The battery charge level is approximate and should be used only as a guideline. 8.2.9 Date and Time Commands The date and time commands are used for accessing the date and time related settings. 8.2.9.1 SYSTem:DATE? Returns the clock date. Example: SYST:DATE? Response: 2003,9,1 The response is returned in the format, ,,. 8.2.9.
1620A “DewK” Thermo-hygrometer User’s Guide command may be password protected (see Section 8.2.10, Password Commands). 8.2.9.5 SYSTem:DECimal:FORMat? [MIN|MAX|DEF] Returns the decimal format used for the display. Example: SYST:DEC:FORM? Response: 1 A value of 0 is returned if the decimal format is using a period (‘.’). A value of 1 is returned if the decimal format is using a comma (‘,’). Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or default value respectively. 8.2.9.
8 Digital Communications Interface Commands 8.2.9.9 SYSTem:TIME:DAYLight? [MIN|MAX|DEF] Returns the automatic daylight saving adjustment setting. Example: SYST:TIME:DAYL? Response: 1 A value of 0 is returned if the daylight saving adjustment is disabled. A value of 1 is returned if the daylight saving adjustment is set to North America (N AMER). A value of 2 is returned if the daylight saving adjustment is set to Europe (EUROPE).
1620A “DewK” Thermo-hygrometer User’s Guide 8.2.10.1 SYSTem:PASSword:ALARm? Returns the state of the alarm settings password protection. Example: SYST:PASS:ALAR? Response: 0 A value of 1 is returned if the alarm settings are password protected; otherwise a value of 0 is returned. 8.2.10.2 SYSTem:PASSword:ALARm Sets the state of the alarm settings password. Example: SYST:PASS:ALAR 1 The parameter turns the alarm settings password protection on (1 or ON) or off (0 or OFF).
8 Digital Communications Interface Commands 8.2.10.6 SYSTem:PASSword:COMM? Returns the state of communication settings front panel password protection. A value of 1 indicates protection is enabled, 0 otherwise. 8.2.10.7 SYSTem:PASSword:COMM Sets the state fo communication settings front panel password protection. 1 enables protection, 0 disables protection. 8.2.10.8 SYSTem:PASSword:NEW |DEF Sets the current system password to a new password.
1620A “DewK” Thermo-hygrometer User’s Guide A value of 1 is returned if the sensor settings password-protection is enabled. Otherwise, a value of 0 is returned. 8.2.10.12 SYSTem:PASSword:SENSor Sets the state of the sensor settings password-protection. Example: SYST:PASS:SENS 1 The parameter turns the sensor settings password-protection on (1 or ON) or off (0 or OFF). This command is password protected.
8 Digital Communications Interface Commands tected with this setting are: SYST:DATE, SYST:DATE:FORM, SYST:TIME, SYST:TIME:DAYL, and SYST:TIME:FORM. 8.2.11 Status Commands The status commands are used for querying and setting the state of the instrument registers. For details on the operation of the status registers refer to the SCPI standards. 8.2.11.1 *CLS Clears the status registers.
1620A “DewK” Thermo-hygrometer User’s Guide 2 Query error (QYE). An attempt has been made to read data when none is available or pending. 3 Device dependent error (DDE). A hardware error condition occurred. 4 Execution error (EXE). An invalid parameter for a command has been received or the command could not be executed under existing conditions. 5 Command error (CME). An unrecognized command or a command with improper syntax has been received. 6 User request (URQ).
8 Digital Communications Interface Commands tion of each of the eight bits of the register by adding the binary-weighted values of each bit. The meaning of each bit, when set (1), is as follows where 0 is the least significant and 7 is the most significant: Bit 0 Measurement Status Bit. Indicates that a bit in the Measurement Status Event Register is set and its corresponding mask bit in the Measurement Status Enable Register is set. It is cleared when the Measurement Status Event Register is read.
1620A “DewK” Thermo-hygrometer User’s Guide bit 0 is 1: channel 1 sensor is unattached, locked out, or not operating properly bit 1 is 1: channel 2 sensor is unattached, locked out, or not operating properly 2nd number: channel 1 sensor test 0: no error bit 0 is 1: sensor unattached bit 1 is 1: sensor memory read failure bit 2 is 1: sensor parameter checksum error bit 3 is 1: sensor calibration parameters out of range bit 4 is 1: sensor calibration date is invalid bit 5 is 1: sensor identification is inval
8 Digital Communications Interface Commands 9th number: battery monitor test 0: no error bit 15 is 1: error 10th number: button status (power-on test only) 0: no button press detected bit 0 is 1: EXIT pressed during power on bit 1 is 1: pressed during power on bit 2 is 1: pressed during power on bit 3 is 1: pressed during power on bit 4 is 1: pressed during power on bit 5 is 1: ENTER pressed during power on 8.2.11.
1620A “DewK” Thermo-hygrometer User’s Guide 0: no alarm Bit 0 Channel 1 temperature alarm bit. Bit 1 Channel 1 humidity alarm bit. Bit 2 Channel 2 temperature alarm bit. Bit 3 Channel 2 humidity alarm bit. Bit 4 Low battery alarm bit. Bit 5 Power failure alarm bit. Bit 6 Not used. Bit 7 Not used. Example: STAT:ALAR? Response: 32 8.2.11.11 STATus:ALARm:ENABle? This command returns the Alarm Status Enable Register (see STATus:ALARm:ENABle command below).
8 Digital Communications Interface Commands Bit 2 Channel 2 temperature measure bit. Bit 3 Channel 2 humidity measure bit. Bit 4 Channel 1 sensor attached/detached. Bit 5 Channel 2 sensor attached/detached. Bit 6 Not used. Bit 7 Not used. Example: STAT:MEAS? Response: 3 8.2.11.14 STATus:MEASure:CONDition? This command reads the Measurement Status Condition Register. Reading this register does not affect it.
1620A “DewK” Thermo-hygrometer User’s Guide Status Bit of the Status Byte Register. If any bit in the Measure Status Event Register is set (1) while its corresponding mask bit in the Measure Status Enable Register is set, the Measure Status Bit in the Status Byte Register will be set. The value of the parameter is a number from 0 to 15 that is the sum of the binary-weighted values of each mask bit. The Measure Status Event Register is described in Section 8.4.11.13, STATus:MEASure?.
8 Digital Communications Interface Commands Bit 2 Not used. Bit 3 Not used. Bit 4 Measurement complete bit. Bit 5 Not used. Bit 6 Not used. Bit 7 Not used. Example: STAT:OPER:COND? Response: 16 8.2.11.19 STATus:OPERation:ENABle? This command returns the Operation Status Enable Register (see STATus:OPERation:ENABle command below). Example: STAT:OPER:ENAB? Response: 16 8.2.11.20 STATus:OPERation:ENABle |MIN|MAX|DEF This command sets the Operation Status Enable Register.
1620A “DewK” Thermo-hygrometer User’s Guide Bit 3 Not used. Bit 4 Measurement Invalid bit. Bit 5 Not used. Bit 6 Not used. Bit 7 Not used. Example: STAT:QUES? Response: 16 8.2.11.22 STATus:QUEStionable:CONDition? This command reads the Questionable Status Condition Register. Reading this register does not affect it. The value returned indicates the condition of each of the eight bits of the register by adding the binary-weighted values of each bit.
8 Digital Communications Interface Commands Questionable Status Enable Register is set, the Questionable Status Bit in the Status Byte Register will be set. The value of the parameter is a number from 0 to 15 that is the sum of the binary-weighted values of each mask bit. The Questionable Status Event Register is described in Section 8.2.11.21, STATus:QUEStionable?. The following example causes the Questionable Status Bit in the Status Byte Register to be set when a measurement is invalid.
9 Calibration Procedure Equipment 9 Calibration Procedure 2626-x sensors used with the thermo-hygrometer should be periodically calibrated to ensure accuracy. A six-month calibration interval for the first year, and one-year thereafter, is recommended. The thermo-hygrometer display unit does not require calibration, and the sensor can be sent to a qualified service center for calibration without the thermo-hygrometer display unit.
1620A “DewK” Thermo-hygrometer User’s Guide 2626-S Temperature Calibration Points Temperature at Relative Humidity 15°C 45% 25°C 45% 35°C 45% 2626-S Relative Humidity Calibration Points Relative Humidity at Temperature 20% 25°C 45% 25°C 70% 25°C 2626-H Temperature Calibration Points Temperature at Relative Humidity 16°C 45% 20°C 45% 24°C 45% 2626-H Relative Humidity Calibration Points 9.
9 Calibration Procedure Temperature and Humidity Adjustments 3. Measure the temperature with the 2626 probe and compare it with the temperature read from the reference thermometer in the chamber to obtain the temperature measurement error: Terror( Tn) = T 2626( Tn) − Treference( Tn) or Measure the relative humidity using the 2626 probe and compare it with the relative humidity read from the chamber to obtain the humidity measurement error: RHerror( RHn) = RH 2626( RHn) − RHchamber( RHn) 9.
1620A “DewK” Thermo-hygrometer User’s Guide ΔHSL = −25% × [ RHerror( RH 3) − RHerror( RH1)] ( RH 3 − RH1) HSL′ = HSL + ΔHSL 5. Calculate the slope-adjusted humidity errors: RHerror( RHn)′ = RHerror( RHn) + ΔHSL × 6. ( RHn − 45%) 25% Calculate the median slope-adjusted humidity error, the adjustment ΔHOS to the humidity offset parameter HOS, and the new humidity offset parameter: RHmedian′ = [ RHerror( RH 3)′+ RHerror( RH 2)′ ] 2 ΔHOS = − RHmedian′ HOS′ = HOS + ΔHOS 7.
10 Maintenance 10 Maintenance • The calibration instrument has been designed ease of operation and simplicity of maintenance as the central theme in the product development. Therefore, with proper care the instrument should require very little maintenance. Avoid operating the instrument in oily, wet, dirty, or dusty environments. • If the outside of the instrument becomes soiled, it may be wiped clean with a damp cloth and mild detergent.
11 Troubleshooting Troubleshooting 11 Troubleshooting In case you run into difficulty while operating the thermo-hygrometer, this section provides some suggestions that may help you solve the problem. Below are several situations that may arise followed by possible causes and suggested actions you might take. 11.1 Troubleshooting The following sections list possible situations, their causes, and suggested actions. 11.1.
1620A “DewK” Thermo-hygrometer User’s Guide On power up the thermo-hygrometer performs a series of self-tests to check the operation of all its components and each of the sensors. The results of the self-tests are reported on the screen. Normally, all tests report ‘OK’. Below is a table of error messages and recommended actions to correct the error. Often these errors can be corrected by completing the actions listed. A failure of one or more component causes error messages to be reported.
11 Troubleshooting Downloading Recorded Data 11.1.7 Error Messages during Normal Operation If an error (e.g. math error) occurs during normal operation, the DewK automatically goes into a safe state, switching off the offending sensor. The internal memory of the DewK is cleared of the sensor's information to try to prevent the error from recurring. NOTE: The ID and calibration parameters stored in the sensor should not be affected. Only the memory of the DewK is cleared, not the memory of the sensor.
1620A “DewK” Thermo-hygrometer User’s Guide a) Use the menu function DATA RECORD - DATA PRINT to begin sending recorded data uning text format. See Section 7.3.1.3, Data Print. b) The thermo-hygrometer should immediately begin sending the data. If no readings have been stored, the thermo-hygrometer will not respond to these commands. 4. If the terminal program was set to capture the incoming data to a file, wait until no more data is being received, then stop capturing. 11.3 CE Comments 11.3.
11 Troubleshooting CE Comments 11.3.1.2 Emission Testing The instrument fulfills the limit requirements for Class A equipment but does not fulfill the limit requirements for Class B equipment. The instrument was not designed to be used in domestic establishments. 11.3.2 Low Voltage Directive (Safety) In order to comply with the European Low Voltage Directive (73/23/EEC), Hart Scientific equipment has been designed to meet the IEC 1010-1 (EN 61010-1) and the IEC 1010-2-010 (EN 61010-2-010) standards.
1620A “DewK” Thermo-hygrometer User’s Guide WARNING: To satisfy FCC RF exposure requirements for mobile transmitting devices, a separation distance of 20 cm or more should be maintained between the antenna of this device and persons during device operation. To ensure compliance, operations at closer than this distance is not recommended. The antenna used for this transmitter must not be co-located in conjunction with any other antenna or transmitter. 11.3.3.
11 Troubleshooting Frequently Asked Questions A. The 1620A allows you to download data using an RS-232, LAN, or RF (optional) communications. Q. Can I change the data stored in memory? A. No. Data stored in memory cannot be changed. It can be downloaded, but the original data file cannot be changed. Memory can be cleared of all readings. Q. Does the 1620A utilize password protection? A. Yes. Refer to section 7.5.4 in this manual. Q. What is the recommended calibration interval of the 1620? A.
Index Index A AC adapter 2, 19 accessories 11, 18 accuracy 9, 22, 139 air velocity 22 alarm screen 21 average 26, 34, 46, 48 display 21, 31 display layout 32 E environmental conditions 10 error message 60, 139 extension cable 20 B F battery 3, 11, 16, 19, 67 baud rate 61 buttons 13, 17 fields, display 34 C graph 32, 36, 40, 43, 59 calibration 29, 133 cautions 3 channel 14, 26 clear data 45 clear statistics 50 clock 57 communication 69 condensation 23 contrast 20, 31 H D daily statistics 46 - 48,
Index O operation 19 P password 65 period, measurement 26 period, printing 61 period, recording 40 power 16 power switch 16, 20 printing 43, 49, 61 Q quick buttons 17 quick start 11 sensor lock 28 serial number 34 service centers 3 specifications 9 stabilization 23 stand 16 statistics 34, 46 - 47 storage capacity 41, 44 switch 20 system information 67 T temperature unit 31, 56 time 32, 34, 57 troubleshooting 139, 141, 143, 145 U R rate of change 27, 34, 53 rate time 27 recording 21, 40 recording perio
