620A “DewK” Thermo-Hygrometer Getting Started 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 Before You Start............................................................................... 1 Introduction .........................................................................................................1 Symbols Used.....................................................................................................1 Safety Information ...............................................................................................3 WARNINGS ....................................
Battery ..............................................................................................................17 Sensor Configuration .......................................................................................18 Power Switch ...................................................................................................18 Power On Self-Test ...........................................................................................18 Display Contrast ....................................
1 Before You Start Before You Start 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: L L L L L L L L L L L L L L L Two channels measure ambient temperature to ± 0.125 °C and %RH to ± 1.
1620A “DewK” Thermo-Hygrometer Getting Started Symbol Description Battery Complies with European Union directives DC Double Insulated Electric Shock Fuse PE Ground Hot Surface (Burn Hazard) Read the User’s Guide (Important Information) Off On Canadian Standards Association OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC1010-1 refers to the level of Impulse Withstand Voltage protection provided.
1 Before You Start Symbol Description The European Waste Electrical and Electronic Equipment (WEEE) Directive (2002/96/ EC) mark. Safety Information Use this instrument only as specified in this manual. Otherwise, the protection provided by the instrument may be impaired. The following definitions apply to the terms “WARNING” and “CAUTION”. “WARNING” identifies conditions and actions that may pose hazards to the user. “CAUTION” identifies conditions and actions that may damage the instrument being used.
1620A “DewK” Thermo-Hygrometer Getting Started CAUTIONS L L L L L L If the instrument is dropped, struck, or handled in a way that causes internal or external physical damage, immediately unplug the AC adapter, remove the battery, discontinue use, and contact an Authorized Service Center. Do not attempt to disassemble or repair the instrument, battery, or AC adapter. Refer repairs or replacement components to an Authorized Service Center.
1 Before You Start Phone: +86-10-6-512-3436 Telefax: +86-10-6-512-3437 E-mail: xingye.han@fluke.com.cn Fluke South East Asia Pte Ltd. Fluke ASEAN Regional Office Service Center 60 Alexandra Terrace #03-16 The Comtech (Lobby D) 118502 SINGAPORE Phone: +65 6799-5588 Telefax: +65 6799-5588 E-mail: antng@singa.fluke.
2 Specifications and Environmental Conditions 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 Getting Started Guide 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. Maintenance and cleaning recommendations can be found in the Maintenance section of the User’s Guide.
3 Quick Start Quick Start This section briefly explains the basics of setting up and operating your thermo-hygrometer. 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 Getting Started Guide 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. Connect the Power Source The thermo-hygrometer draws power from the provided power adapter.
4 Parts and Controls Parts and Controls The functions of the various features of the thermo-hygrometer are described below. 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.
20A “DewK” Thermo-Hygrometer Getting Started 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.
4 Parts and Controls Alarm Port - The alarm port allows external alarm indicators to be connected to the instrument and activated when an alarm event occurs. The port outputs 0V when inactive and 12V DC (up to 20 mA) when active. The jack accepts a 2.5 mm two-conductor subminature plug (Switchcraft #850). The sleeve of the plug is ground and the tip is positive. DC Power Socket - The DC plug from the AC adapter plugs into the 12V DC power socket to power the instrument. The jack accepts a 5.
1620A “DewK” Thermo-Hygrometer Getting Started Guide Battery Compartment - The battery compartment holds a 9V alkaline battery used as a backup power source to maintain continuous measurement during a power outage. Power Switch - The power switch turns the power on and off to the thermo-hygrometer, including power from the battery. Before disconnecting the AC adapter from the instrument, switch the power off to prevent draining the backup battery.
4 Parts and Controls L Model 1620A-S includes a 1620A Thermo-Hygrometer readout, a standard accuracy sensor (Model 2626-S), a thermo-hygrometer readout wall mount bracket, power supply (Model 2361), and an RS-232 cable. Accessories The following accessories are available to compliment either the high accuracy or standard thermo-hygrometer readout.
5 General Operation General Operation This section explains basic operation of the thermo-hygrometer. Detailed operation of the thermo-hygrometer is explained in Sections 7 and 8 of the User’s Guide. 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. DC Power Source The thermo-hygrometer requires 12 V dc to operate.
1620A “DewK” Thermo-Hygrometer Getting Started Guide 5. Replace the battery cover. 6. Replace the DC power cord and switch the power on. Used batteries must be disposed of properly. See the WARNINGS section at the beginning of this guide. Sensor Configuration The thermo-hygrometer can be used with one or two sensors of either type attached at either of the two ports. Extension cables can be used with the sensors to allow the sensors to be placed at remote locations.
5 General Operation Measuring The thermo-hygrometer will automatically make measurements on enabled channels at the set period when a sensor is attached. Channels are enabled using the CHANNEL SETTING function in the CHANNEL menu. The measurement period is also set with this function. Unit of Temperature The thermo-hygrometer is capable of displaying temperature in Celsius (C) or Fahrenheit (F).
1620A “DewK” Thermo-Hygrometer Getting Started Guide First, consider that the sensor actually measures its own temperature, not necessarily the temperature of the air around it. Ideally, the sensor’s temperature will be the same as the air, but they might be different under less than ideal conditions. One such condition is when there is a source of radiated heat that is “seen” by the sensor.
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