594A/1595A Super-Thermometer Technical Guide 159X____tgeng0000
Limited Warranty & Limitation of Liability Each product from Fluke Corporation (“Fluke”) is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is one year(s) for the thermometer. The warranty period begins on the date of the shipment. Parts, product repairs, and services are warranted for 90 days.
Table of Contents 1 Before You Start..................................................................................... 1 1.1 1.2 Symbols Used.............................................................................................................1 Safety Information.......................................................................................................1 1.2.1 1.2.2 1.3 2 WARNINGS.................................................................................................
1594A/1595A Super-Thermometer 4.3.5 5 Earth Ground Connection................................................................................................22 Menus and Screens............................................................................. 23 5.1 5.2 5.3 5.4 5.5 5.6 Introduction...............................................................................................................23 Changing Settings................................................................................
6.2 6.3 7 Making Measurements........................................................................ 61 7.1 7.2 7.3 7.4 7.5 7.6 8 User Settings Screen................................................................................................57 Connecting a Probe or Resistor................................................................................58 Introduction...............................................................................................................
1594A/1595A Super-Thermometer 8.7.3.24 8.7.3.25 8.7.3.26 8.7.3.27 8.7.3.28 8.7.3.29 8.7.3.30 8.7.3.31 8.7.3.32 8.7.3.33 8.7.3.34 8.7.3.35 8.7.3.36 8.7.3.37 8.7.3.38 8.7.3.39 8.7.3.40 8.7.3.41 8.7.3.42 8.7.3.43 8.7.3.44 8.7.3.45 8.7.3.46 8.7.3.47 8.7.3.48 8.7.3.49 8.7.3.50 8.7.3.51 8.7.3.52 8.7.3.53 8.7.3.54 8.7.3.55 8.7.3.56 8.7.3.57 8.7.3.58 8.7.3.59 8.7.3.60 8.7.3.61 8.7.3.62 8.7.3.63 8.7.3.64 8.7.3.65 8.7.3.66 8.7.3.67 8.7.3.68 8.7.3.69 8.7.3.70 8.7.3.71 8.7.3.72 8.7.3.73 8.7.3.74 8.7.3.75 8.7.3.76 8.
8.7.3.80 8.7.3.81 8.7.3.82 8.7.3.83 8.7.3.84 8.7.3.85 8.7.3.86 8.7.3.87 8.7.3.88 8.7.3.89 8.7.3.90 8.7.3.91 8.7.3.92 8.7.3.93 8.7.3.94 8.7.3.95 8.7.3.96 8.7.3.97 8.7.3.98 8.7.3.99 8.7.3.100 8.7.3.101 8.7.3.102 8.7.3.103 8.7.3.104 8.7.3.105 8.7.3.106 8.7.3.107 8.7.3.108 8.7.3.109 8.7.3.110 8.7.3.111 8.7.3.112 8.7.3.113 8.7.3.114 8.7.3.115 8.7.3.116 8.7.3.117 8.7.3.118 8.7.3.119 8.7.3.120 8.7.3.121 8.7.3.122 8.7.3.123 8.7.3.124 8.7.3.125 8.7.3.126 8.7.3.127 8.7.3.128 8.7.3.129 8.7.3.130 8.7.3.131 8.7.3.
1594A/1595A Super-Thermometer 8.7.3.136 8.7.3.137 8.7.3.138 8.7.3.139 8.7.3.140 8.7.3.141 8.7.3.142 8.7.3.143 9 TEST:LIN[:STAT]?...................................................................................................................101 TEST:LIN:TIME?.....................................................................................................................101 TEST:LIN:TOL?..............................................................................................................
Figures Figure 1 PEM (Power Entry Module)..................................................................................16 Figure 2 Front view............................................................................................................17 Figure 3 Front Panel Display..............................................................................................19 Figure 4 Rear view............................................................................................................
1594A/1595A Super-Thermometer Tables Table 1 Symbols...................................................................................................................1 Table 2 Resistance Ratio Accuracy Specifications.............................................................6 Table 3 Resistor Stability Specifications..............................................................................7 Table 4 Absolute Resistance Accuracy Specifications.......................................................
Before You Start Safety Information 1 Before You Start 1.1 Symbols Used Table 1 lists the symbols that may be used on the instrument or in this manual and the meaning of each symbol. Table 1 Symbols Symbol 1.
1594A/1595A Super-Thermometer Authorized Service Centers ●● ●● ●● 1.2.2 1.3 DO NOT connect an AC mains supply that does not match the voltage setting on the back of the unit. DO NOT use this instrument in combination with any probe ( PRT or thermistor) to measure the temperature or resistance of any device where the probe might come in contact with a conductor that is electrically energized. Severe electric shock, personal injury, or death may occur.
Before You Start Authorized Service Centers 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.
Introduction and Specifications Specifications 2 Introduction and Specifications 2.1 Introduction The Fluke family of Hart Super-Thermometers long ago established the standard for easy-to-use, precision temperature measurement instrumentation. Laboratories worldwide have selected the Super-Thermometer not only for the assurance of achieving high-quality results, but also for the innovative features that increase productivity in the lab.
1594A/1595A Super-Thermometer Specifications Primary Specifications: the core set of measurement accuracy specifications of the Super-Thermometer. They are guaranteed for performance verification at the 99% confidence level. Ancillary Specifications: additional specifications that help the user understand more of the uncertainties involved in measurement.
Introduction and Specifications Specifications Table 3 Resistor Stability Specifications Resistor (Rs) 2.2.2.3 Accuracy (ppm of reading), 95 % confidence level 24 hours 30 days 1W 5 ppm 10 ppm 10 W 0.5 ppm 2 ppm 25 W 0.25 ppm 1 ppm 100 W 0.2 ppm 1 ppm 10 kW 0.25 ppm 1 ppm Absolute Resistance Accuracy Absolute resistance accuracy is the ability of the instrument to measure absolute resistance, Rx, using the internal reference resistors.
1594A/1595A Super-Thermometer Specifications Table 5 Measurement Current Accuracy Specifications Current Range Accuracy 99% confidence level, 1-year 2.2.3 2.2.3.1 0.001 mA to 0.005 mA 0.00005 mA 0.005 mA to 0.02 mA 1% 0.02 mA to 0.2 mA 0.5 % 0.2 mA to 2 mA 0.2 % 2 mA to 20 mA 0.5 % Ancillary Specifications Temperature Measurement Noise Temperature measurement noise indicates typical measurement noise in temperature measurements.
Introduction and Specifications Specifications 2.2.4 General Specifications Table 8 General Specifications 2.2.5 2.2.5.1 Warm-up period 30 minutes Measurement range 0 W to 500 kW Measurement current range 0.001 mA to 20 mA Measurement current reversal interval: Sample period of 1 second or 2 seconds Sample period of 5 second or 10 seconds 0.2 second 1.2 second Standby current range 0.
1594A/1595A Super-Thermometer Specifications When calibrating an SPRT on the ITS-90, the WT90 value is measured at required fixed-point temperatures. This is done by measuring the resistance of the SPRT at a fixed-point temperature followed immediately by measurement of the RTPW. This is repeated for each temperature point. Once again the ratio accuracy of the Super-Thermometer, applied to each measured resistance, determines the accuracy of the resulting WT90value. 2.2.5.
Introduction and Specifications Specifications is converted to temperature by dividing 0.03 ppm by 1.0 × 106 and then multiplying by 1.02. The result is then divided by WT90 sensitivity, dW/dT, at 0.01 °C, which is 0.004. The final result is 0.000008 °C. After multiplying by WT90 (1.612), the uncertainty of the RTPW resistance ratio, when applied to 157 °C, is 0.000013 °C. 2.2.5.3.5 Measurement Noise at 0.01 °C During measurement of the RTPW, it is observed that the standard error of the mean is 0.
1594A/1595A Super-Thermometer Specifications of the SPRT at 157 °C which is 0.1 Ω/°C (see tip above). This results in a standard temperature uncertainty of 0.001028 °C. 2.2.5.3.11 Measurement Noise at 157 °C During measurement at 157 °C, the standard error of the mean (as reported by the 1595A) is observed to be 0.00004 °C. Note: The user must monitor measurement noise and use the actual measured measurement noise in the uncertainty calculations. 2.2.5.3.
Introduction and Specifications Specifications 2.2.5.4.2 Example 3: Measuring Zero-Power Resistance The purpose of this example is to demonstrate how the Relative Current specification applies when performing a zero-power measurement. The zero-power uncertainty calculated in this example would be added to the rest of the uncertainties involved in the measurement as explained in previous examples. The intention of the zeropower measurement is to remove measurement errors due to self-heating of the SPRT.
1594A/1595A Super-Thermometer Specifications 257 Ω. Divide the result by the sensitivity of the PRT (dR/dT) at 420 °C. This can be found in the PRT calibration report. For this example, 0.4 Ω/°C is used. The resulting uncertainty is 0.0013°C. 2.2.5.5.2 Measurement Noise at 420 °C The noise of the measurement at 420 °C is observed using the Standard Error of the Mean statistic field of the 1595A. In this example it is 0.00003 °C. 2.2.5.5.
Preparation for Operation Line Voltage and Fuses 3 Preparation for Operation 3.1 Unpacking and Inspection The Super-Thermometer is shipped in a container designed to prevent damage during shipping. Inspect the contents of the container for damage and immediately report any damage to the shipping company. Instructions for inspection are included in the shipping container. Table 9 Optional Accessories Item Rack Mount Kit 2590 Scanner Case Carry-handle Kit Extended range test report 3.
1594A/1595A Super-Thermometer Connecting to Line Power 1. Disconnect line power. 2. Observe what line voltage setting is displayed in the PEM window. If it is correct, the fuse assembly will be re-inserted in the same orientation it is removed. Otherwise, it will need to be rotated 180° before re-insertion. 3. Open the fuse compartment by inserting a screwdriver blade in the slot located at the top of the fuse compartment and open the PEM door. 4.
Front and Rear Panel Features Front Panel Features 4 Front and Rear Panel Features 4.1 Introduction The Super-Thermometer has been designed with several features that help make setup and operation as simple as possible while still providing many measurement capabilities. This section describes the front and rear panel features as well as the menu system. Please read this section before operating the instrument. 4.2 Front Panel Features Figure 2 Front view 4.2.
1594A/1595A Super-Thermometer Front Panel Features 4.2.3 Front Panel Keys Table 10 Front panel key descriptions The Power Standby key turns off the display and disables the front panel keys, sending the system into standby. Power remains applied to some internal components such as the resistor oven. When the system is brought out of standby by pressing the Power Standby Key, it is not necessary to wait the 30-minute warm-up period.
Front and Rear Panel Features Front Panel Features 4.2.3.1 Front Panel Display The Front Panel Display is shown in Figure 3. The display screen is used to show all measurements, menus and configuration information. Figure 3 Front Panel Display The default display language is English. The display can be shown in the following language options: English, Chinese, Spanish, Japanese, German, French, and Russian. The display language can be changed in the User Settings screen.
1594A/1595A Super-Thermometer Rear Panel Features 4.3 Rear Panel Features Figure 4 Rear view 4.3.3.1 External Resistor Inputs Figure 5 External Resistor Inputs The Rs1 and Rs2 external reference resistor connections are located on the rear panel. The Current (C1, C2), Potential (P1, P2) and Guard (G) terminals are labeled to facilitate proper connection (see Figure 16 on page 58). 4.3.1 Scanner Connection The 2590 Scanner connection is a 15-pin socket located on the back panel.
Front and Rear Panel Features Rear Panel Features 4.3.2 Future Peripheral Connection A USB peripheral port is intended for future peripheral control. Note: This port is NOT used for external memory connection. For external memory via USB see Section 4.2.2, USB Connection, on page 17 and Figure 2 on page 17. 4.3.3 Remote Operation Connections The Super-Thermometer comes equipped with several remote operation connections. See Table 11 for the remote operation connection descriptions.
1594A/1595A Super-Thermometer Rear Panel Features 4.3.4 Line Voltage Connection Figure 6 Power Entry Module The PEM (Power Entry Module) located on the rear panel connects the Super-Thermometer to line voltage. It contains the Line Voltage Power Switch, the Line Voltage Fuses, and the Line Voltage Selector. See the Line Voltage and Fuses section for configuration and connection instructions. 4.3.5 Earth Ground Connection The Earth Ground Connection is provided to allow connection to earth ground.
Menus and Screens Changing Settings 5 Menus and Screens 5.1 Introduction This section provides detailed description of the Super-Thermometer menus and screens. The menus and screens are designed to allow the user to quickly and easily set up the instrument for measurement while also providing many configuration options. Note that some function keys are located in multiple locations in the menu system for convenience.
1594A/1595A Super-Thermometer Password Protection In the Alpha-Numeric Interface, use the front panel arrow keys to move the cursor to the desired character. Press the ENTER key to enter the selected character in the text edit box. Numeric characters can be entered using the Alpha-Numeric Interface or the front panel digit keys. If a mistake is made, pressing the DELETE key will backspace over the character to the left of the cursor.
Menus and Screens Measurement Screen | | | READ RESISTOR | | MANAGE RESISTORS | | READ FILE | | WRITE FILE | | MOVE UP | | MOVE DOWN | | DELETE RESISTOR | ON/OFF | MEASURE MENU (see MEASURE MENU below) PROBE MENU | ADD PROBE | COPY PROBE | EDIT PROBE | | TEST CALCULATION | READ PROBE | MANAGE PROBES | READ FILE | WRITE FILE | MOVE UP | MOVE DOWN | DELETE PROBE MEASURE MENU | SCAN SETTINGS | TIMING SETTINGS | DIGITAL FILTER | | CLEAR FILTER | RECORDING MENU | | RECORDING SETTINGS | | VIEW DATA | | READ FILE
1594A/1595A Super-Thermometer Measurement Screen or by pressing and releasing the MENU key then pressing the EXIT key. The following describe each section of the Measurement Screen. A C B D E Figure 9 Measurement Screen The following are the different sections of the Measurement Screen (see Figure 9) followed by detailed descriptions of each section: A. B. C. D. E. Channel Measurement Display Channel Summary Section Statistics Fields Data/Graph Section Status and Alert Section 5.6.
Menus and Screens Measurement Screen OVEN - indicates whether the resistor oven is stable and ready for measurement. After power up, the OVEN field will first indicate “SETTLING” while the oven warms up and settles to the proper temperature. When the oven temperature is stable, the field will display “READY” to indicate that the Super-Thermometer is ready for measurement. It typically takes about 30 minutes for the temperature to settle and the indication to change to “READY.
1594A/1595A Super-Thermometer Main Menu 5.6.6 START/STOP MEASUREMENT (F1) The Start/Stop Measurement function key is a toggling function key that starts and stops measurement sampling. 5.6.7 SHOW TABLE/GRAPH (F2) The Show Table/Graph function key toggles the display between Graph mode and Data mode. 5.6.8 RESET STATISTICS (F3) The Reset Statistics function key resets all statistics fields and sample counts. 5.6.
Menus and Screens Main Menu DISPLAY MENU - used to configure display settings, and statistics settings as well as selecting temperature measurement units SYSTEM MENU - used to configure the remote interface ports, set the system date and time, configure password settings and calibrate the Super-Thermometer The following are detailed descriptions of each submenu and its contents. 5.7.
1594A/1595A Super-Thermometer Main Menu 5.7.1.2 CHANNEL SETTINGS (F2) MAIN MENU | CHANNEL SETUP | With the desired channel selected in the Channel Setup screen, pressing the Channel Settings function key opens a screen that allows the user to configure the channel settings. The channel that is being configured is identified at the top of the Channel Settings screen. The channel configuration fields are as follows: REFERENCE RESISTOR (Rs) - identifies the reference resistor to be used for measurement.
Menus and Screens Main Menu 5.7.1.2.1 SET UP Rs (F1) MAIN MENU | CHANNEL SETUP | CHANNEL SETTINGS | Pressing the Set Up Rs function key displays the Rs definition assigned to each Rs input. The Up/Down arrow keys are used to scroll through the list to select an Rs input for configuration. The following function keys allow the user to configure the Rs input. 5.7.1.2.1.
1594A/1595A Super-Thermometer Main Menu 5.7.1.2.1.1.3 EDIT RESISTOR (F2) MAIN MENU | CHANNEL SETUP | CHANNEL SETTINGS | SET UP Rs | DEFINE RESISTOR | The Edit Resistor function key opens the highlighted Rs definition for editing. The configuration fields are explained in the Add Resistor section above. 5.7.1.2.1.
Menus and Screens Main Menu write the file. If a USB memory device has not yet been inserted, the user is instructed to do so. Allow about 10 seconds for the system to recognize the USB device before continuning. Resistor definition files are written to a folder named “\159x\resistor” on the USB memory device and have the extension “.res”. If the file does not exist, it will be created.
1594A/1595A Super-Thermometer Main Menu 5.7.2 PROBE MENU (F2) MAIN MENU | Figure 11 Probe Menu Screen The Probe Menu contains the function keys needed for editing and managing probe definitions stored in the Probe Library. The Probe Library is non-volatile memory inside the Super-Thermometer which contains probe configuration information that is configured and stored by the user.
Menus and Screens Main Menu CALIBRATION DATE - the calibration date of the probe. The digits may be set to zero if the date is undefined. NOMINAL CURRENT - the sensing current used for measuring the probe. The value entered is the current used to measure the probe when 1 x Power is selected in the Channel Settings screen. Typical current settings are 1.0 mA for a 25.5 Ω or 100 Ω PRTs and 0.010 mA for 10 kΩ thermistors (see “Table 13 Recommended Reference Resistor for Various Probe Types” on page 30).
1594A/1595A Super-Thermometer Main Menu Type Conversion Coefficients THERMISTOR R(T) POLYNOMIAL B0, B1, B2, B3 T(R) POLYNOMIAL A0, A1, A2, A3 Equations i 3 1 R[Ω] = exp ∑ Bi i = 0 t[°C] + 273.15 t[°C ] = 1 ∑ 3 i=0 A1[ln R[Ω]]i − 273.15 Note: With ITS-90 conversion, where subranges overlap, the high subrange supersedes the low subrange. If only subrange 5 is used in a probe definition, select subrange 5 for both High Subrange and Low Subrange.
Menus and Screens Main Menu 5.7.2.4 READ PROBE (F4) MAIN MENU | PROBE MENU | The Read Probe function key allows the user to read a probe definition from the USB memory device into the Probe Library. When a USB memory device, that contains a probe definition file, is inserted in the front panel, the Read Probe screen displays a list of probe definition files (*.prb) found on the memory device. By scrolling up and down the list using the arrow keys, the user can select the desired probe definition file.
1594A/1595A Super-Thermometer Main Menu If the \159x\probe\ folder and .prb file have not been created previously, they will be created automatically when the file is written. If the .prb file already exists, a newly written probe definition will be appended into the file. However, if the .prb file already exists and all files are written to memory, the .prb file will be overwritten. 5.7.2.5.
Menus and Screens Main Menu The following are complete descriptions of each function key. 5.7.3.1 SCAN SETTINGS (F1) MAIN MENU | MEASURE MENU | Scan Settings is used to set up channel scanning. The Super-Thermometer has several scan options that are configured using the following fields. SCAN ENABLE- turns scanning on or off by using the Left/Right Arrow Keys and pressing the ENTER key. ON enables automatic sequencing through all enabled channels.
1594A/1595A Super-Thermometer Main Menu 41) if the digital filter is ON. If the digital filter is OFF, measurement samples are passed directly to Conversion. 4. Conversion - after filtering, the fundamental ratio measurement can be converted to the selected unit of measure such as Temperature (Section 5.7.2.3, EDIT PROBE (F3), on page 36). If RATIO is the selected unit of conversion, the measurement is passed directly to Display. 5.
Menus and Screens Main Menu PRESET PRECISION (F2) - sets the timing settings for minimal measurement noise and settling error with most thermometer probes. Sample Period is set to 2 seconds, Display Interval is set to 10 seconds, and Average Enable is set to ON. PRESET FAST (F3) - is used to configure the Super-Thermometer for the fastest possible measurements. Sample Period and Display Interval are both set to 1 second. Measurement noise and electrical settling errors may be greater in Fast mode.
1594A/1595A Super-Thermometer Main Menu Important: Avoid switching power off to the Super-Thermometer while measurement and recording are in progress or recorded data may be lost. Measurements are recorded when the START RECORD (F5) function key in the Measurement screen has been pressed. The Status Bar at the bottom of the Measurement screen indicates if recording is ON or OFF. Each recorded measurement includes the date and time of the measurement, channel, measured value, and unit.
Menus and Screens Main Menu 5.7.3.4.3 READ FILE (F3) MAIN MENU | MEASURE MENU | RECORDING MENU | The Read File function key allows the user to view measurements that have been recorded in a file on the USB memory device. If a USB device has not been inserted in the front panel, the user will be prompted to do so. A list of files appears on the screen and the user selects the file to be opened using the arrow keys and then opens the file by pressing the ENTER key.
1594A/1595A Super-Thermometer Main Menu Tip: Zero-Power measurements must be performed in a very stable heat source so temperature drift does not interfere with the calculation. Zero-power measurement is performed by first measuring the probe at nominal current. Then the excitation current is automatically changed to 1.4142 times the nominal current. 1.4142x of the nominal current is referred to as double power excitation current since the power dissipated is twice that of nominal current.
Menus and Screens Main Menu CHANNEL - the measurement channel PROBE - the ID of the probe TIME REMAINING - the amount of time left to complete the zero-power sequence of measurements in minutes and seconds (00:00) STEP - indicates the current measurement step of the sequence SENSING CURRENT - the sensing current implemented in the measurement step PHASE - indicates whether measurement is in SETTLING or MEASURING mode MEAN - the arithmetic mean of the measurements taken in the current step STD DEV - the sta
1594A/1595A Super-Thermometer Main Menu PROBE, ZERO_MEAS,, SELF_HEAT,, STAN_ERR,, DRIFT,, CURR_1,,mA MEAN_1,, SDEV_1,, CURR_2,,mA MEAN_2,, SDEV_2,, CURR_3,,mA MEAN_3,, SDEV_3,, Note: DRIFT is recorded only if Repeat Nominal is enabled.
Menus and Screens Main Menu 5.7.4.1 USER SETTINGS (F1) MAIN MENU | DISPLAY MENU | The User Settings screen allows the user to set preferences such as language, temperature measurement resolution, screen saver settings and alert messages. The User Settings screen will automatically appear as the initial screen if the Start-up Help setting is enabled (see below). This assists a first-time user in setting preferences and setting the clock to the local time.
1594A/1595A Super-Thermometer Main Menu When the User Settings screen appears after power-on, when the Start-Up Help setting is ON, the User Settings screen includes function key NEXT (F1). This key leads to the Time and Date Settings screen (see Section 5.7.5.1, TIME DATE (F1), on page 50), where the clock may be set to the local time. 5.7.4.2 FIELD SETTINGS (F2) MAIN MENU | DISPLAY MENU | The Field Settings function key is used for selecting statistical fields to display in the Measurement Screen.
Menus and Screens Main Menu 5.7.4.3 STATISTICS SETTINGS (F3) MAIN MENU | DISPLAY MENU | The Statistics Settings screen allows the user to set statistics related settings such as the statistics mode to be used. STATISTICS MODE – determines the mode in which statistics are used. The options are LIMITED and UNLIMITED. In Limited mode, statistics are calculated using a sliding window that is limited in width by the number of samples defined in the Sample Count setting.
1594A/1595A Super-Thermometer Main Menu TRACE - controls whether a measurement point is plotted with a line that connects to the previous point or as a separate dot. The options are LINE and DOT. The default value is DOT. Important: When Time Span is large, multiple points may be combined and drawn as a vertical line to conserve memory. 5.7.4.5 TEMPERATURE UNIT (F5) MAIN MENU | DISPLAY MENU | The Temperature Unit screen allows the user to select the unit for displayed temperature measurements.
Menus and Screens Main Menu DAYLIGHT SAVING - determines whether the clock is automatically adjusted at the beginning and end of the Daylight Saving period. Options are OFF, NORTH AMERICA, and EUROPE. The default option is OFF. 5.7.5.2 REMOTE INTERFACE (F2) MAIN MENU | SYSTEM MENU | The Remote Interface screen contains the function keys used for configuring and monitoring the remote interface ports.
1594A/1595A Super-Thermometer Main Menu SUBNET MASK - specifies the network’s subnet mask when DHCP is OFF. Gateway and Subnet Mask are not available when DHCP is set to ON. HOST NAME - is a name that may be used to identify the Super-Thermometer on the network. It may consist of a combination of letters and digits, up to 16 characters in length. The first character must be a letter. Hyphen characters are allowed within the Host Name string.
Menus and Screens Main Menu 5.7.5.3.1 STORE CONFIG (F1) MAIN MENU | SYSTEM MENU | CONFIG | The Store Configuration function allows the user to store settings to a configuration file in either internal nonvolatile memory or a USB flash memory device.
1594A/1595A Super-Thermometer Main Menu 5.7.7 DELETE CONFIG (F3) MAIN MENU | SYSTEM MENU | CONFIG | The Delete Configuration function may be used to delete a configuration file in internal memory. The screen shows a list of configuration files found in the internal non-volatile memory. The user presses the Up/Down arrow keys to select one of the configuration files, then CONTINUE (F1) or ENTER to delete the file. The use must confirm the action before the configuration is deleted. 5.7.7.3.
Menus and Screens Main Menu RESISTOR PROTECTION - enables or disables protection of resistor definition related screens. This setting is useful for ensuring that resistor definitions in the Resistor Library do not get inadvertently changed. The default is OFF. MEASURE PROTECTION- enables or disables protection of measurement setting screens. This setting is used for ensuring that timing and digital filter settings do not get inadvertently changed, possibly resulting in noisy or less accurate measurements.
1594A/1595A Super-Thermometer Main Menu In the Calibration Parameters screen the user may view and change measurement calibration settings. The calibration parameters can be viewed with no password but a password is required to make changes. Calibration parameters include calibrated values for each of the internal resistors and the linearity coefficients for the resistance ratio measurements. Since the accuracy of the Super-Thermometer depends on these values, they must be accurate. Refer to Section 9.4.
Getting Started User Settings Screen 6 Getting Started 6.1 Powering on the Super-Thermometer CAUTION: Before powering the Super-Thermometer on, ensure that the line voltage selection is set properly. Refer to Section 3.3, Line Voltage and Fuses, on page 15 for instructions. Power the Super-Thermometer on by setting the power switch located on the back panel to the On position.
1594A/1595A Super-Thermometer Connecting a Probe or Resistor KEYPAD BEEP- enables (ON) or disables (OFF) the audio indication that accompanies each key-press. The default option is ON. START-UP HELP- determines whether the User Settings screen appears automatically after power-on. When the settings is ON the User Settings screen will appear every time the power is switched on. If the setting is OFF the Measurement screen will appear instead. The default option is ON.
Getting Started Connecting a Probe or Resistor The DWF connectors are labeled with C1, C2 (current connections) and P1, P2 (measurement potential connections). The guard connector is labeled with a “G” and is used for connecting to a probe or resistor guard or shield. The guard connection may help reduce measurement noise. Connect a probe or resistor, as specified by the device’s manufacturer, to any one of the four measurement channels located on the front panel.
Making Measurements Measuring a Temperature Probe 7 Making Measurements 7.1 Introduction The Super-Thermometer has been designed to allow quick and easy measurement setup while providing flexible measurement options. The purpose of this section is to guide the user through the configuration of the Super-Thermometer for typical measurements. 7.2 Measuring a Temperature Probe The following instructions apply to the setup of both PRTs and thermistors for temperature measurement. 1.
1594A/1595A Super-Thermometer Scanning Multiple Temperature Probes 7. If the desired measurement channel is set to Off, use the ON/OFF (F3) function key to toggle the channel to On. Pressing the Channel Select key located above the channel connection will also set the channel to On. 8. Press the EXIT key twice (or press and hold the EXIT key) to go to the Measurement screen. 9. In the Measurement screen, select the START MEASURE (F1) function key to start measurement sampling.
Making Measurements Making A Zero-Power Measurement c. Select the SETUP RS (F1) function key. d. Select the DEFINE RESISTOR (F2) function key. e. Select the ADD RESISTOR (F1) function key. 4. Enter a unique ID in the ID field. Pressing the ENTER key will open the Alpha-Numeric Interface for text entry. 5. Enter the resistance value of the resistor in the RESISTANCE VALUE field. Caution: The Resistance Value field is used in measurement for the calculation of the Rx resistance.
Remote Operation Configuring the Network (LAN) Port 8 Remote Operation 8.1 Introduction This section contains instructions for controlling the Super-Thermometer remotely through the available remote operation ports. See Table 18 for a list of the available remote operation ports. The remote operation commands listed at the end of this section are applicable with all of the remote operation ports.
1594A/1595A Super-Thermometer Configuring the Network (LAN) Port Configuring the LAN port is accomplished through the Remote Interface section of the System menu. The LAN configuration parameters are HARDWARE MAC, DHCP ENABLE, IP ADDRESS, GATEWAY, SUBNET MASK, HOST NAME, and CONTROL ENABLE. To configure the LAN port settings: 1. 2. 3. 4. 5. Press the MENU key.
Remote Operation Configuring the Network (LAN) Port 1. In the NETWORK screen, use the Up/Down arrow keys to select DHCP ENABLE. 2. IF DHCP is set to ON, use the Left/Right arrow keys to select OFF. Press the ENTER key to save the change. 3. Arrow down to IP ADDRESS and enter the desired static IP address using the front panel keys. Press the ENTER key to save the IP address. 4. Cycle the unit’s power to allow the new address to take effect. 8.2.
1594A/1595A Super-Thermometer Using the Web Interface 1. In the NETWORK screen, use the Up/Down arrow keys to select HOST NAME. 2. While HOST NAME is highlighted, pressing the ENTER key opens the Alpha-Numeric Interface allowing the user to enter a host name up to 16 characters in length. 3. Select the SAVE (F3) function key to save the newly entered host name. 4. Cycle the unit’s power to allow the new host name to take effect. 8.
Remote Operation Configuring the IEEE-488 Port 1. Press the MENU key. 2. Select the SYSTEM MENU (F5) function key 3. Select the REMOTE INTERFACE (F2) function key 4. Select the USB (F2) function key 5. Use the Left/Right arrow keys to change PORT ENABLE to ON (enable). Before plugging the USB communication cable from the Super-Thermometer into a computer, make sure the computer is connected to the internet to allow the USB driver to download and install in the computer automatically.
1594A/1595A Super-Thermometer Interface Commands 8.7 Interface Commands An alphabetical listing of the commands implemented by the Super-Thermometer is shown in Table 19 on page 70. These commands can be used with all of the remote operation ports. An example and description of each command is included following the Remote Operations Command table. 8.7.1 Command Syntax The Super-Thermometer accepts commands that set parameters, execute functions or respond with requested data.
Remote Operation Interface Commands Associated Setting or Function (screen) Command Function CAL:DATE Sets the instrument’s date of calibration Calibration Date (Calibration Parameters) CAL:PAR:LIN Sets a calibration linearity correction parameter Linearity C (Calibration Parameters) CAL:PAR:RES Sets the calibrated resistance of an internal reference resistor — Ω Resistor (Calibration Parameters) CAL:PAR:ZERO Sets the calibration zero correction parameter Zero Correction (Calibration Pa
1594A/1595A Super-Thermometer Interface Commands 72 Associated Setting or Function (screen) Command Function INIT:CONT Starts or stops measurement START/STOP MEASURING (Main Screen) INIT:STOP:BEEP Sets the stop timer’s Timer Beep setting Stop Timer Enable (Timing Settings) INIT:STOP:DUR Sets the stop timer’s Timer Duration setting Stop Timer Duration (Timing Settings) INIT:STOP[:STAT] Sets the Stop Timer Enable Stop Timer Enable (Timing Settings) INIT:STOP:TIME? Reads the stop timer’s time
Remote Operation Interface Commands Associated Setting or Function (screen) Command Function SENS:APER:PRES Sets the measurement timing settings to preset values PRESET PRECISION PRESET FAST PRESET LONG (Timing Settings) SENS:APER:SAMP Sets the measurement Sample Period Sample Period (Timing Settings) SENS:AVER1 Sets the Average Enable for the sample average Average Enable (Timing Settings) SENS:AVER2 Sets the digital filter’s Filter Enable Filter Enable (Digital Filter) SENS:AVER2:COUN Set
1594A/1595A Super-Thermometer Interface Commands 8.7.3 8.7.3.
Remote Operation Interface Commands 8.7.3.4 Bit Event 0 OPC, Operation Complete 1 Request control (not used) 2 Query error 3 Device dependent error 4 Execution error 5 Command error 6 User request (not used) 7 Power on *IDN? Example response: FLUKE,1594,A9C111,1.10/1.00 Reads the instrument information. The response is given in the following format: ,,, 8.7.3.5 *RST Sets operating settings to default states.
1594A/1595A Super-Thermometer Interface Commands Query form: *SRE? Sets the Service Request Enable register. This mask register determines which corresponding bits of the Status Byte Register (see Section 8.7.3.7, *STB?, on page 76) affect the MSS master summary bit (bit 6) of the Status Byte Register and generate a service request from the IEEE-488 port. 8.7.3.7 *STB? Example response: 16 Reads the Status Byte Register. This indicates any of several events defined by the IEEE-488.
Remote Operation Interface Commands Sets the calibration Zero Correction parameter. This setting may be used to apply a zero correction to the measurement circuit. IMPORTANT: Calibration parameters should not be changed except as part of the Super-Thermometer calibration procedure performed by a qualified service technician. 8.7.3.12 CALC:AVER:ALL? Example command: CALC3:AVER:ALL? Example response: 231.928581,0.000488,0.000212,231.92862,231.928479,23 Example response: 231.928581,,,231.928581,231.
1594A/1595A Super-Thermometer Interface Commands Query form: CALC:AVER:COUN? Alternate parameter: DEF, MIN, MAX Sets the statistics Sample Count setting. Parameter is the maximum number of samples in the moving window when the Statistics Mode setting is LIMITED (see Section 8.7.3.22, CALC:AVER:TCON NORM|MOV, on page 79). The range is 1 through 100 and the default is 100. The *RST command sets Sample Count to 100. 8.7.3.16 CALC:AVER:MAX? Example command: CALC3:AVER:MAX? Example response: 231.
Remote Operation Interface Commands 8.7.3.19 CALC:AVER:SEM? Example command: CALC3:AVER:SEM? Example response: 0.000039 Reads a channel’s statistical standard error of the mean (see Section 5.7.4.2, FIELD SETTINGS (F2), on page 48). Suffix is the channel number: 1 through 4 for the corresponding front channel input, 5 through 14 for channels of the first attached scanner, and 15 through 24 for channels of the second attached scanner.
1594A/1595A Super-Thermometer Interface Commands Sets the Delta Channel setting (see Section 5.7.4.3, STATISTICS SETTINGS (F3), on page 49). Parameter is the channel number to use as the reference, which may be 1 through 4 for the corresponding front channel input, 5 through 14 for channels of the first attached scanner, and 15 through 24 for channels of the second attached scanner. This setting is only meaningful when Delta Mode is set to CHANNEL. The *RST command sets Delta Channel to 2. 8.7.3.
Remote Operation Interface Commands 8.7.3.29 DATA:REC:FILE Query form: DATA:REC:FILE? Sets the data recording USB File name (see Section 5.7.3.4.1, RECORDING SETTINGS (F1), on page 42). 8.7.3.30 DATA:REC:MEM INT|USB|BOTH Query form: DATA:REC:MEM? Sets the data recording Memory Device (see Section 5.7.3.4.1, RECORDING SETTINGS (F1), on page 42). 8.7.3.31 DATA:REC[:STAT] Query form: DATA:REC? Starts or stops recording.
1594A/1595A Super-Thermometer Interface Commands Reads a statistics field setting of the visible statistics fields memory set (see Section 5.7.4.2, FIELD SETTINGS (F2), on page 48). Suffix is the field number, which may be 1 through 4. The response will be one of the following: MEAN, SDEV, SEM, MAX, MIN, SPR, N, DELT, RES, RAT, TIME, or DATE. 8.7.3.
Remote Operation Interface Commands Sets the display Rs Due Alert enable (see Section 5.7.4.1, USER SETTINGS (F1), on page 47). The default setting is OFF. 8.7.3.43 DISP:WARN:ITS Query form: DISP:WARN:ITS? Alternate parameter: DEF Sets the display ITS-90 Subrange Alert enable (see Section 5.7.4.1, USER SETTINGS (F1), on page 47). The default setting is ON. 8.7.3.44 FETC? Example command: FETCH? 4 Example response: 231.
1594A/1595A Super-Thermometer Interface Commands Alternate parameter: DEF, MIN, MAX Sets the stop timer’s Timer Duration setting (see Section 5.7.3.2, TIMING SETTINGS (F2), on page 39). The value is the number of seconds. The range is 1 to 86399 and the default is 3600 (one hour). This setting is only meaningful when Stop Timer Enable is ON. The *RST command sets Timer Duration to 3600. 8.7.3.
Remote Operation Interface Commands Adds a new probe definition to the Probe Library. Before a probe can be assigned to a channel and temperature measured, the probe must have its definition added to the Probe Library (see Section 8.7.3.57, INP:PROB:IDEN , on page 85). Parameter is the ID of the new probe definition. It can contain letters, numerals, hyphens, periods, forward slashes, and underscores. It must be between one and 24 characters in length, inclusive.
1594A/1595A Super-Thermometer Interface Commands Reads the ID of the next probe in the Probe Library. It also advances the library index used for the next response to the INP:PROB:NEXT? command. If there are no more probes in the Probe Library, the response is an empty string, “”. 8.7.3.
Remote Operation Interface Commands C0 – C7 C0 – C7 exponential number Maximum Temperature MAX_TEMP decimal number, dependent on Unit setting Conversion CONV R_POLY|T_POLY|NONE B0 – B3 exponential number A0 – A3 exponential number Thermistor type settings R(T) polynomial conversion settings B0 – B3 T(R) polynomial conversion settings A0 – A3 The settings that are applicable to the probe definition depends on the Type setting and Conversion setting, and may depend on other settings also, such
1594A/1595A Super-Thermometer Interface Commands A channel’s Calculation setting will be changed from temperature to resistance (see Section 8.7.3.27, CALC:TYPE TEMP|RES|RAT, on page 80) if its Reference Resistor (Rs) setting was set to the specified input and the resistor assignment for the input is set to variable. A channel’s Reference Resistor (Rs) setting will be changed from the specified input to the internal 100 Ω resistor if the resistor assignment for the input is being set to none. 8.7.3.
Remote Operation Interface Commands Sets the resistor definition assigned to a front reference resistor input. (Use the command INP:REAR:RS:IDEN to assign a resistor definition to a rear Rs input.) Suffix specifies the front input (channel) number and must be either 2 or 4. Parameter must be either the ID of a resistor definition in the Resistor Library, “VAR” (variable), or “NONE”. Enclosing quotations marks are optional.
1594A/1595A Super-Thermometer Interface Commands Parameter may be any of the following: Function 1 Selects the internal 1 Ω resistor for the reference resistor 10 Selects the internal 10 Ω resistor for the reference resistor 25 Selects the internal 25 Ω resistor for the reference resistor 100 Selects the internal 100 Ω resistor for the reference resistor 10K Selects the internal 10 kΩ resistor for the reference resistor RS1 Selects the rear RS1 input as the source for the ref
Remote Operation Interface Commands A channel number in may be 1 through 4 for the corresponding front channel input, 5 through 14 for channels of the first attached scanner, and 15 through 24 for channels of the second attached scanner. If a scanner is attached, channel 1 will not be enabled. A range of channels may be conveniently included in the channel list by using a colon between the channel range limits. The query response lists all enabled channels separately.
1594A/1595A Super-Thermometer Interface Commands Parameter is the number of measurements performed on a channel before advancing to the next channel. The range is 1 through 100 and the default is 1. The *RST command sets Repeat Count to 1. 8.7.3.79 ROUT:SCAN:STAT Query form: ROUT:SCAN:STAT? Alternate parameter: DEF Sets the Scan Enable setting (see Section 5.7.3.1, SCAN SETTINGS (F1), on page 39). The *RST command sets Scan Enable to the default setting which is ON. 8.7.3.
Remote Operation Interface Commands Password protection: Measure Protection Sets the Average Enable for the sample average (see Section 5.7.3.2, TIMING SETTINGS (F2), on page 39). The *RST command sets Average Enable to the default setting which is ON. 8.7.3.84 SENS:AVER2[:STAT] Query form: SENS:AVER2? Password protection: Measure Protection Sets the digital filter’s Filter Enable (see Section 5.7.3.3, DIGITAL FILTER (F3), on page 41).
1594A/1595A Super-Thermometer Interface Commands The returned value is a resistance ratio after processing by the digital filter. If no measurement is available, no response is returned and error code -230, “Data corrupt or stale” is generated in the error queue. 8.7.3.89 STAT:OPER? Example response: 16 Reads and clears the Operation Status Event Register. This indicates whether a new measurement became available to read (using FETC?) since the previous STAT:OPER? query.
Remote Operation Interface Commands 8.7.3.95 SYST:BEEP[:IMM] Example command: SYST:BEEP Produces an immediate beep from the speaker. 8.7.3.96 SYST:BEEP:KEY Query form: SYST:KEY:BEEP? Alternate parameter: DEF Sets the Key Beep setting (see Section 5.7.4.1, USER SETTINGS (F1), on page 47). The default setting is ON. 8.7.3.97 SYST:BEEP:ALER Query form: SYST:KEY:ALER? Alternate parameter: DEF Sets the Alert Beep setting (see Section 5.7.4.1, USER SETTINGS (F1), on page 47).
1594A/1595A Super-Thermometer Interface Commands Sets the network port’s IP Address setting (see Section 8.2, Configuring the Network (LAN) Port, on page 65). Parameter is a string specifying the address using IP dot notation. This setting is only allowed when DHCP is OFF. The query form returns the static IP address when DHCP is OFF and returns the dynamically assigned IP address when DHCP is ON. 8.7.3.
Remote Operation Interface Commands 8.7.3.109 SYST:COMM:SOCK:MAC? Example response: “00204A9AF1A2” Reads the network port’s Hardware MAC address (see Section 8.2, Configuring the Network (LAN) Port, on page 65). 8.7.3.110 SYST:COMM:SOCK:MASK Example command: SYST:COMM:SOCK:MASK “255.255.255.0” Query form: SYST:COMM:SOCK:MASK? Sets the network port’s Subnet Mask setting (see Section 8.2, Configuring the Network (LAN) Port, on page 65).
1594A/1595A Super-Thermometer Interface Commands 8.7.3.116 SYST:ERR? Example response: -100,“Command error” Reads the next error in the error queue. When an error is read it is removed from the error queue, and the next error may be read by sending the command again. If there are no more errors, the response is 0,“No error”. The error queue holds ten errors.
Remote Operation Interface Commands 8.7.3.120 SYST:PASS:CEN:STAT? Returns the password-access state. The response is 0 if access is disabled and 1 if access is enabled. 8.7.3.121 SYST:PASS:GROU:MEAS Query form: SYST:PASS:GROU:MEAS? Password protection: unconditional Alternate parameter: DEF Sets the password Measure Protection setting (see Section 5.7.7.1, PASSWORD (F4), on page 54). When Measure Protection is on, settings related to measurement, and their associated commands, are protected.
1594A/1595A Super-Thermometer Interface Commands Query form: SYST:TIME:DAYL? Password protection: Time/Date Protection Alternate parameter: DEF Sets the Daylight Saving automatic adjust setting (see Section 5.7.5.1, TIME DATE (F1), on page 50). Allowed parameter values are OFF for no automatic daylight saving adjustment, NAM for adjustment according to the schedule used in North America (the United States, Canada, and Mexico), and EUR for adjustment according to the schedule used in Europe.
Remote Operation Interface Commands The query form returns 1 if Ratio Self-Calibration is in progress, 0 otherwise. 8.7.3.134 TEST:LIN:REP? Example response: 0.00000002,0.00000001,0.00000002,0.02,0.003 Reads a report from Ratio Self-Calibration (see Section 9, Calibration, on page 103).
1594A/1595A Super-Thermometer Interface Commands 8.7.3.138 TEST:LIN:TOL? Example response: 0.8 Reads a Ratio Self-Calibration test tolerance (see Section 9, Calibration, on page 103). Suffix specifies the test number of which the error tolerance is requested (see Section 8.7.3.134, TEST:LIN:REP?, on page 101). The response has units of 1×10-6. 8.7.3.139 TEST:SYST:ABOR Cancels a system self-test (see Section 9, Calibration, on page 103).
Calibration CURRENT TEST (F2) 9 Calibration 9.1 Introduction This section explains the step-by-step instructions for calibrating and verifying functionality of the SuperThermometer to ensure it will operate correctly and meet published specifications. If the instrument cannot be brought into specification using these instructions, contact the nearest Fluke Authorized Service Center.
1594A/1595A Super-Thermometer RATIO CALIBRATION (F3) If using a calibrated resistor, connect the resistor to all four terminals on one of the front panel measurement inputs and connect the voltmeter to the P1 and P2 terminals. Refer to Table 20 for recommended resistance values. The accuracy of the DVM should be better than 0.05 % over the range of 0.02 V to 0.2 V. Table 20 Recommended Resistors For Testing The Current Current Resistor 0.001 mA to 0.02 mA 10 kW 0.02 mA to 0.2 mA 1 kW 0.2 mA to 2.
Calibration RATIO CALIBRATION (F3) sured resistance ratios. Ideally the product would be exactly 1.0. The reported error is half the difference of the combined result from 1.0, in units of 1×10-6. Test 3 (Equal ratio sum--100% scale) - This test evaluates linearity errors at a resistance ratio near 0.5 with the measurement circuit operating at full scale. The test has two parts.
1594A/1595A Super-Thermometer RESISTANCE CALIBRATION (F4) The reported data of the Ratio Self-Calibration may be written to a file on a USB memory device using the WRITE FILE (F1) function key in the View Report screen (see Write File below). The calibration parameters associated with measurement linearity may be adjusted to improve the accuracy if necessary using the ADJUST PARAMETERS (F2) function key (see Adjust Parameters below). The following function keys are found in the View Report screen. 9.4.
Calibration RESISTANCE CALIBRATION (F4) To properly calibrate a Super-Thermometer internal resistor, the expanded uncertainty (k = 2) of the standard resistor should be no greater than 25% of the 95% confidence level, 1-Year Absolute Resistance Accuracy specifications. Its resistance should be approximately the same as that of the internal reference resistor being calibrated, which will result in the least measurement noise and best test uncertainty.
1594A/1595A Super-Thermometer CALIBRATION PARAMETERS (F5) The results of the resistance calibration are written to the file as follows: RESISTANCE,,,,,,, is the nominal resistance of the internal reference resistor (in Ω). is the channel number to which the standard resistor was connected. is the calibrated resistance of the standard resistor. is the measured resistance of the standard resistor.
Calibration CALIBRATION PARAMETERS (F5) 9.6.2 Standby Current Check It may be necessary to check standby current to ensure proper operation. The standby current must be manually checked. Each channel’s standby current can be checked with the following steps. NOTE: If a scanner is connected, channel 1 will not be available to test. Power off the SuperThermometer and disconnect the scanner in order to test standby current on channel 1. 1. Connect a 100 Ω resistor to channel 1. 2.
Maintenance 10 Maintenance Avoid operating the instrument in excessively wet, oily, dusty, or dirty environments. If the outside of the instrument becomes soiled it may be wiped clean with a damp cloth and mild detergent. DO NOT use harsh chemicals on the surface that may damage the paint or plastic. ●● ●● ●● The instrument should be handled with care. Avoid knocking, dropping, or vibrating the instrument. This instrument is tested and calibrated at the factory.
Troubleshooting 11 Troubleshooting The purpose of this section is to help the user troubleshoot unexpected operation results. Use the following list of problems and solutions to troubleshoot the issue. If the issue cannot be resolved using this section, contact the nearest Fluke Authorized Service Center for additional support. Problem Solution Failure to produce valid measurements Check probe wiring. Use an ohmmeter to check continuity of the 4-wire connection to the probe.
1594A/1595A Super-Thermometer 114 Problem Solution Poor accuracy The current may be too low causing poor signal to noise ratio or too high causing excessive self-heating. Check the current setting by pressing the SETUP key and viewing the excitation current setting for each channel. The reference resistor selection may be incorrect. Check the assigned reference resistor for each channel by pressing the SETUP key and viewing the Rs selection. The Timing Settings may be too fast.
Index Symbols 1.
1594A/1595A Super-Thermometer DATE FORMAT 47, 57 Daylight Saving 100 DAYLIGHT SAVING 51, 58 DECIMAL FORMAT 47, 57 decimal point 18 Decimal setting 81 DEFINE RESISTOR (F2) 31 DEL 23 DELETE 24 DELETE CONFIG (F3) 54 DELETE key 18 DELETE PROBE (F5) 38 DELETE RESISTOR (F5) 33 delta 80 DELTA 35, 48, 86 DELTA CHANNEL 49 Delta Mode 80 DELTA MODE 49 Delta Offset 80 DELTA OFFSET 49 Depth 9 DHCP 51, 65, 96 DHCP ENABLE 51, 66 dielectric absorption 40 digital filter 93 Digital Filter 41 Digital Filter Description 41
Interface Commands 70 INTERNAL 53 Internal Memory 41, 42 Internal Resistor Calibration 108 IP address 51, 66 IP Address 96 IP ADDRESS 51 ISO Guide to the Expression of Uncertainty in Measurement 5 ITS-90 9, 27, 35, 83, 86 ITS-90 SUBRANGE ALERT 47, 57 J Japanese 15, 19, 47, 82 K K 50, 56, 108 Key Beep 95 KEYPAD BEEP 47, 58 L LAN 21, 65 Language 19 LANGUAGE 47, 57 Language setting 82 leakage 40 limited 79 LIMITED 49 Limited mode 49 linearity 6, 104 LINEARITY C1 106 LINEARITY C2 106 LINEARITY C3 106
1594A/1595A Super-Thermometer PHASE 45 POLARITY 104 POLYNOMIAL 35, 36 PORT ENABLE 51, 52, 69 port number 65 Power Entry Module 15 Power Standby key 18 PRESET FAST 92 PRESET FAST (F3) 41 PRESET LONG 92 PRESET LONG (F4) 41 PRESET NORMAL 92 PRESET NORMAL (F1) 40 PRESET PRECISION 92 PRESET PRECISION (F2) 41 PROBE 45 probe definition 29, 61, 85, 86 Probe Definitions 54 PROBE ID 26 Probe Library 29, 34, 37, 54, 61, 85, 86 Probe Library Capacity 38 Probe Menu 34 PROBE MENU 28 PROBE MENU (F2) 34 PROBE PROTECTION
Scanner Connection 20 scanning 90 Scanning 62 SCAN SETTINGS (F1) 39 Screens 23 Screen Saver 47 SCREEN SAVER DELAY 47, 57 SCREEN SAVER ENABLE 47, 57 SDC 52 self-heating 30, 43, 63 SELF-HEATING 45 sensing current 30, 40, 84, 103 SENSING CURRENT 30, 45 SENSING CURRENT 1 45 SENSING CURRENT 2 45 SENSING CURRENT 3 45 Sensing Current Test 100 SE OF MEAN 48 SERIAL (F1) 51 Serial Number 50 serial port 21, 69 SETTLE TIME 44, 63 SETTLING 27 SETUP key 18, 29 SET UP Rs (F1 31 SHOW TABLE/GRAPH (F2) 28 sign key 18, 2
1594A/1595A Super-Thermometer TRACE 50 T(R) POLYNOMIAL 36 TYPE 34 U Unit 56 UNIT 50 unlimited 79 UNLIMITED 49 Unlimited mode 49 Unpacking 15 UPDATE FIRMWARE (F5) 54 USB 17, 21, 32, 41, 42, 53, 65, 81, 97 rear 68 USB (F2) 51 USB FILE 42 User Settings 19 USER SETTINGS (F1) 47 User Settings Screen 57 User’s Guide 15 V VARIABLE RESISTANCE 31 VERTICAL CENTER 49 VERTICAL SPAN 49 VIEW DATA (F2) 42 VIEW PREVIOUS (F2) 46 W warm-up period 9, 18 Warnings 1 Warranty ii Web Interface 21, 68 web page 52 Weight 9
