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Makingmeasurements

Temperaturemeasurement

6  Making measurements

6.1  Introduction

The Super-Thermometer has been designed to allow quick and easy measurement setup while providing flex-

ible measurement options. A measurement setup varies with the type of measurement being performed. The 

purpose of the following sections is to guide the user through the setup of typical measurements. Refer to the 

Technical Guide for more detailed information concerning measurement setup.

6.2  Temperature measurement

The following are the steps for setting up and performing a temperature measurement:

1.  Press and hold the EXIT key to go to the Measurement screen.
2.  If necessary, suspend measurement by pressing the START/STOP MEASUREMENT (F1) function key 

located in the Measurement screen.

3.  Connect a temperature probe to one of the measurement input channels.
4.  Press the SETUP key to open the channel setup screen. Use the Up/Down arrow keys to highlight the 

channel where the probe is connected. Scanner channels, if available, are identified with a S1 (scanner 

1) or a S2 (scanner 2) prefix added to the channel number.

5.  Once the channel is highlighted, use the following steps to assign a probe definition to the selected 

channel:

a.  Select the ASSIGN PROBE (F1) function key to open the Probe Library. 
b.  Scroll through the list of probe definitions using the Up/Down arrow keys. If the desired probe 

definition has not been previously entered, select ADD PROBE (F1) to begin the process 

of creating a probe definition (see the Probe Menu section in the Technical Guide for more 

information). 

c.  When the desired probe definition is highlighted, press the ENTER key to assign the selected 

probe definition to the highlighted channel.

6.  Select the CHANNEL SETTINGS (F2) function key to configure the measurement channel. Use the 

following steps to configure the channel:

a.  Select the desired reference resistor (Rs) to be used for the measurement. Use Table 12 on the 

next page as a guide for the selection. 

b.  Verify the correct sensing current has been selected. 
c.  Determine whether standby current (used to self-heat the probe sensor when channel is not 

being measured) is to be On or Off. 

d.  Select the desired measurement calculation. The options are RESISTANCE (to output the 

probe’s resistance only), RATIO (to output the ratio of the probe’s resistance versus the 

reference resistor), and TEMPERATURE (only if calibration coefficients were entered in the 

probe definition).

e.  Press the EXIT key to move back to the Channel Setup screen.

7.  If the desired measurement channel is set to Off, use the On/Off (F3) function key to toggle the channel 

to On.

8.  If necessary, select the MEASURE MENU (F4) function key to configure settings such as channel 

scanning, measurement timing, digital filter settings, measurement recording, and zero-power 

measurement. Otherwise, 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.

After measurement has started, use the SHOW TABLE/GRAPH (F2) function key to toggle between a mea-

surement data table screen and a data graph screen. All other measurement options and settings are explained 

in full detail in the Technical Guide. 

Summary of Contents for 1594A

Page 1: ...1594A 1595A Super Thermometer User s Guide 159X____ugeng0000 ...

Page 2: ...avail able if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable interna tional price Fluke reserves the right to invoice Buyer for importation costs of repairs replacement parts when product purchased in one country is submitted for repair in another country Fluke s warranty obligation is limited at Fluke s option to refund of the purchase price free of ...

Page 3: ...ion for operation 11 3 1 Unpacking and inspection 11 3 2 Instruction Manuals 11 3 3 Line voltage and fuses 11 3 4 Connecting to Line Power 12 3 5 Placement and Rack Mounting 12 4 Features 13 4 1 Introduction 13 4 2 Front panel features 13 4 2 1 Measurement inputs 13 4 2 2 USB connection 13 4 2 3 Front panel keys 14 Front panel display 15 4 3 Rear panel features 16 External resistor inputs 16 4 3 1...

Page 4: ...tarted 23 5 1 Powering on the Super Thermometer 23 5 2 User settings screen 23 5 3 Connecting a probe or resistor 24 6 Making measurements 27 6 1 Introduction 27 6 2 Temperature measurement 27 6 3 Ratio Measurement 28 6 4 Using an External Resistor 28 7 Maintenance 29 ...

Page 5: ...res Figure 1 PEM Power Entry Module 12 Figure 2 Front view 13 Figure 3 Front panel display 15 Figure 4 Rear view 16 Figure 5 External resistor inputs 16 Figure 6 Power Entry Module 18 Figure 7 Input wiring 24 ...

Page 6: ... specifications 7 Table 5 Measurement current accuracy specifications 8 Table 6 Temperature measurement noise specifications 8 Table 7 Relative measurement current specifications 8 Table 8 General Specifications 9 Table 9 Optional accessories 11 Table 10 Front panel key descriptions 14 Table 11 Remote operation connections 17 Table 12 Recommended Reference Resistors and Sensing Current 28 ...

Page 7: ...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 1 2 1 WARNINGS DO NOT use this unit in environments other ...

Page 8: ...ument discontinue use and contact a Fluke Authorized Service Center for repair Do not attempt to disassemble or repair the instrument Refer repairs or replacement of components to a Fluke Authorized Service Center DO NOT connect AC voltage to any input terminal on the instrument Permanent damage to the instrument will result 1 3 Authorized service centers Please contact one of the following author...

Page 9: ...ce 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 com When contacting these Service Centers for support please have the following information available Model Number Serial Number Voltage Complete description of the problem ...

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Page 11: ...ibration performs a linearity check or calibration of the Super Thermometer ratio accuracy without the need of any external equipment Automated Zero Power Measurement allows for determination and or cancellation of a thermometer s self heating error Updated computer interface with USB control RS 232 and IEEE 488 included as standard Ethernet connection allows for remote view of the Super Thermomet...

Page 12: ...uracy specifications Ratio range 1594A accuracy ppm of reading 1595A accuracy ppm of reading 95 confidence level 1 year 0 95 to 1 05 0 24 ppm 0 06 ppm 0 5 to 0 95 1 05 to 2 0 0 64 ppm 0 16 ppm 0 25 to 0 5 2 0 to 4 0 0 8 ppm 0 2 ppm 0 0 to 0 25 2 0 x 10 07 5 0 x 10 8 4 0 to 10 0 2 0 ppm 0 5 ppm 99 confidence level 1 year 0 95 to 1 05 0 3 ppm 0 075 ppm 0 5 to 0 95 1 05 to 2 0 0 8 ppm 0 2 ppm 0 25 to...

Page 13: ...irst year and 1 year thereafter Table 4 Absolute resistance accuracy specifications Resistance range Rs current Accuracy ppm of reading 95 confidence level 1 year 0 W to 1 2 W 1 W 10 mA Greater of 40 ppm or 0 000012 W 0 W to 12 W 10 W 3 mA Greater of 10 ppm or 0 000024 W 0 W to 120 W 25 W 1 mA Greater of 5 ppm or 0 000024 W 0 W to 400 W 100 W 1 mA Greater of 4 ppm or 0 00008 W 0 W to 10 kW 10 kW 1...

Page 14: ... the table below are obtainable in a typical laboratory environment It is important that the user make their own evaluation of measurement noise in the application and environment where the Super Thermometer is used Table 6 Temperature measurement noise specifications Conditions Rs Current Standard error of the mean C Typical performance 25 W SPRT at 0 C 25 W 1 0 mA 0 00002 25 W SPRT at 420 C 25 W...

Page 15: ... Standby current range 0 001 mA to 2 mA AC power 100 V to 230 V 10 50 or 60 Hz Fuse Rating 2 A T 250 V Specified operating temperature 15 C to 30 C Absolute operating temperature 5 C to 40 C Storage temperature 0 C to 40 C Operating relative humidity 5 C to 30 C 10 to 70 Operating relative humidity 30 C to 40 C 10 to 50 Storage relative humidity 0 to 95 non condensing Maximum operating altitude 30...

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Page 17: ...languages English Chinese Spanish Japanese German French and Russian The 1594A 1595A Super Thermometer Technical Guide contains complete information for setting up and operating the Super Thermometer It also includes instructions for remote operation calibration and mainte nance The Technical Guide is available in English only For ordering a replacement instruction manual CD contact your local Flu...

Page 18: ...ne voltage label is shown in the PEM window Close the PEM door so it locks in place Figure 1 PEM Power Entry Module 3 4 Connecting to Line Power WARNING To avoid electrical shock connect the factory supplied three prong line power cord to a properly grounded power outlet Do not use a two prong adapter or extension cord that will break the ground connection After the line voltage setting and correc...

Page 19: ...e 2 Front view 4 2 1 Measurement inputs Four measurement inputs channels 1 through 4 are located on the front panel Some key points concerning the measurement inputs are Current C1 C2 Potential P1 P2 and Guard G terminals are labeled to facilitate correct connection Figure 7 on page 24 Channels 2 and 4 can also be used as reference resistor Rs inputs 4 2 2 USB connection The USB port on the front ...

Page 20: ... exponential number for example 1 0 E 04 The ENTER key is used to save a change or to select an item When an item is changed ENTER must be pressed otherwise the item reverts to its original value upon exiting The MENU key is used to go directly to the Main Menu screen The EXIT key is used to exit from a menu or setting Pressing EXIT will leave an edit without saving the changes When entering a num...

Page 21: ... in the User Settings screen The User settings screen is displayed in English regardless of language setting when using a shortcut key sequence that is entered from the Measure ment screen In the Measurement screen press and hold the EXIT key to return to the Measurement screen press and release the ENTER key and then press the SETUP key Use the Up Down arrow keys to select the LANGUAGE configurat...

Page 22: ...rence 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 7 on page 24 4 3 1 Scanner connection The 2590 Scanner connection is a 15 pin socket located on the back panel It is used to control an optional scanner Refer to the scanner manual for connection and setup instructions ...

Page 23: ... Super Thermometer s display in a web browser via the LAN connection This connection also allows limited control of the Super Thermometer start stop measurement reset statistics clear alert mes sage start stop recording Table 11 Remote operation connections Connection Description Ethernet connector that allows connection to a network for controlling the instrument and transmitting measurements USB...

Page 24: ...t up the instru ment for measurement while also providing many configuration options It is important to note that some function keys are located in multiple locations in the menu system for ease of use See the complete menu structure in section 3 5 The following are descriptions of the primary menus and screens Refer to the Technical Guide for in depth information regarding the menus and screens 4...

Page 25: ...he EXIT key is used to exit a screen or menu and allows the user to leave an edit without saving Menus and screens contain help text that clarify the purpose of the menu or screen When a field requires alpha numeric character input an alpha numeric interface opens automatically upon pressing ENTER while the field is selected Some screens may be password protected If the password is required a spec...

Page 26: ...WN DELETE PROBE MEASURE MENU SCAN SETTINGS TIMING SETTINGS DIGITAL FILTER RECORDING MENU RECORDING SETTINGS VIEW DATA READ FILE WRITE FILE ERASE DATA ZERO POWER MEASUREMENT DISPLAY MENU USER SETTINGS FIELD SETTINGS STATISTICS SETTINGS GRAPH SETTINGS TEMPERATURE UNIT SYSTEM MENU TIME DATE REMOTE INTERFACE SERIAL USB NETWORK IEEE 488 ERRORS CONFIG STORE CONFIG ...

Page 27: ...21 Features Menu structure RECALL CONFIG DELETE CONFIG RESTORE DEFAULT UPDATE FIRMWARE PASSWORD CALIBRATION SYSTEM TEST CURRENT TEST RATIO CALIBRATION RESISTANCE CALIBRATION CALIBRATION PARAMETERS ...

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Page 29: ... decimal character used in decimal numbers on the display Available options are period and comma The default option is This setting has no effect on communications commands and responses recorded data or library files TEMPERATURE RESOLUTION sets the desired number of decimal places that appear in displayed tem perature measurements Available options are 0 1 through 0 000001 The default option is 0...

Page 30: ...m clock is automatically adjusted at the beginning and end of the Daylight Saving period Options are OFF NORTH AMERICA and EUROPE The user settings sequence is completed by selecting the NEXT F1 function key at which point the user is prompted to allow the user settings screen to be displayed upon power up After making the selection the Channel Setup screen is shown to help the user set up a measu...

Page 31: ...d 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 To prevent the possibility of applying too much current suspend measure ment sampling and configure the channel before making the connection...

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Page 33: ...tion in the Technical Guide for more information c When the desired probe definition is highlighted press the ENTER key to assign the selected probe definition to the highlighted channel 6 Select the CHANNEL SETTINGS F2 function key to configure the measurement channel Use the following steps to configure the channel a Select the desired reference resistor Rs to be used for the measurement Use Tab...

Page 34: ...he Add Resistor screen by using the following steps a Press the SETUP key to open the Channel Setup screen b Select the CHANNEL SETTINGS F2 function key 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 th...

Page 35: ...amp 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 Continued regular testing and calibration is recommended Routinely check the ratio accuracy using the Ratio Self Calibration function ...

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