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9

Viewing the MAX, MIN, and AVG Readings

1.   Press 

MAX/MIN

 button to step through the maximum (MAX), minimum 

(MIN), and average (AVG) readings. The elapsed time since entering 

MAX/ MIN/AVG mode, or the time at which the minimum or maximum 

occurred, appears on the display.

2.  Press and hold the 

MAX/MIN

 button for three seconds to exit the  

Max/Min/Avg mode and return to normal operation.

Recording/Data Logging Operation (Meter)

1.   Press 

Power on/off

 button to turn the unit on. The 

first value immediately shown is the number of data 

logging sample points remaining (Fig. 6).

2.   Press 

Rec

/

 button to begin recording; the REC icon 

will be appear to indicate the meter is recording data 

measurements.

3.  To stop recording, press and hold 

Rec

/

 button for 

three seconds until the REC icon is no longer shown.

4.  

Note:

 A maximum of 10,000 sample points is avail-

able (Fig. 6). As you log temperature readings, this 

value will be lower each time you turn on the meter. 

When the memory is full (with 0 sample points 

remaining), the first value shown will be “FULL” 

rather than a number. Or if you try to record, the  

REC

 icon will flash five times and disappear. At this point, you are  

no longer able to record until the memory is cleared. (See "Changing 

Setup Options", "Clear Memory Operation" on pages 7–8.)

Recording/Data Logging Operation (Software)

1.  First install software on PC following the set up wizard (see “Software 

Installation” on next page). Once software is successfully installed, the 

data logging software icon shortcut will be automatically placed on your 

PC desktop.

2. Connect thermometer to your PC via the supplied USB cable.
3. Power the meter on.
4.  Open the installed Data Logger Software by double-clicking on the icon 

on your PC desktop.

5.  In the Data Logger Setting menu, confirm time and select date format, 

sampling rate, memory full directions, auto power-off status, and start 

method; then select “OK”. 

You must set these parameters before meter 

will record measurements.

 

 

a.  

Note:

 Manual start method is controlled by user pressing REC 

button on instrument. Automatic start method will activate 

recording via the software instantly once selected. 

Fig. 6

Summary of Contents for 20250-20

Page 1: ...anual THE STANDARD IN PRECISION MEASUREMENT Professional Thermocouple Thermometer with Four Type K Inputs Data Logging and Optional Infrared Wand with NIST Traceable Calibration Model 20250 20 Enter R...

Page 2: ...contact your instrument supplier immediately 1 Meter 2 Four type K flexible probes 3 USB cable 4 Software 5 Carrying case 6 One 9 V battery 7 User manual 8 NIST traceable calibration report with data...

Page 3: ...4 2 LCD 3 Enter button 4 Up button 5 Rec button 6 C F K button 7 HOLD button 8 DIF T1 T2 T3 T4 button 9 Power on off button 10 MAX MIN button 11 Setup Backlight button 12 IR input Optional infrared wa...

Page 4: ...rared IR TEMP icon requires Optional IR wand sku number 20250 24 7 SETUP mode icon 8 Offset icon 9 Auto power off icon 10 Low battery icon 11 T2 or T4 temperature display 12 MAX MIN AVG icons 13 Secon...

Page 5: ...ton to turn on the backlight Press it again to turn off the backlight Press Setup Backlight button and hold for three seconds to enter or exit the Setup mode See Changing Setup Options 7 Press or Rec...

Page 6: ...t to change this setting 3 Press or Rec button until the setting you want to use appears on the display 4 Press Enter button to store the new setting into memory Note Setup is disabled in the Max Min...

Page 7: ...f no adjust ment is needed press Enter button to exit time setting 2 Set the time The adjust order is year month day hour minute Press C F K button until the value you wish to change is flashing 3 Pre...

Page 8: ...powered off Displaying Temperatures 1 Press C F K button to switch between Celsius C Fahrenheit F and Kelvin K temperature scales 2 Hold or attach the thermocouple s to the measurement location The te...

Page 9: ...with 0 sample points remaining the first value shown will be FULL rather than a number Or if you try to record the REC icon will flash five times and disappear At this point you are no longer able to...

Page 10: ...ta List tab to open the list of measurements recorded Select File icon from the menu bar and save data to desired location on your PC Note Data will be saved in an Excel format that will include all s...

Page 11: ...bove 14 F 10 C 11 F 6 C below 14 F 10 C Auto power off Unit shuts off automatically after 20 minutes to conserve battery life Operating temperature 32 to 122 F 0 to 50 C Storage temperature 14 to 122...

Page 12: ...ery Replacement When the battery power falls low the low battery icon will appear on the screen Replace the 9 V battery in the rear battery compartment by remov ing the cover Ensure that the cover is...

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