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User Manual

THE STANDARD IN PRECISION MEASUREMENT

Temperature and Temperature/RH 
Data Loggers with USB Interface

Models 20250-41, -42, -43, -44

www.

.com

information@itm.com

1.800.561.8187

Summary of Contents for 20250-41

Page 1: ...User Manual THE STANDARD IN PRECISION MEASUREMENT Temperature and Temperature RH Data Loggers with USB Interface Models 20250 41 42 43 44 www com information itm com 1 800 561 8187 ...

Page 2: ...20250 44 4 Mounting clip with screws 5 Software CD 6 One 3 6 V battery 7 User manual Key Features Status indication via green and yellow red LEDs Integrated USB interface for setup and data download User settable high low alarms Real time mode lets you monitor and log measured data in real time while the logger is still plugged into the computer s USB interface Logger Description 1 Clear USB conne...

Page 3: ...couple sensor connected before recording LED Status Guide To conserve battery life increase the LED flashing cycle to 30 seconds using the provided software The LED status indication alternates every cycle For example If there is one alarm the REC LED blinks for one cycle and ALM LED will blink for next cycle When the battery is low all operations will be disabled automatically logged data will be...

Page 4: ...h the open selection The data can be saved in the default ITMR format or CVS format Real time Function Click on the clock icon to initiate data recording while the logger is still plugged into the computer USB port This is particu larly useful when familiarizing yourself with the data logger by allowing you to immediately view the impact of changing the various settings Download Function Click on ...

Page 5: ...de allows the logger to begin recording automatically once it is removed from the computer USB port Sample Rate set rate from 2 seconds to 24 hours between data samples Max Points select the number of samples up to 32 000 16 000 per channel Record Time calculates the run time based on sample rate and max points selected LED flash cycle increase the flash cycle to conserve battery life See LED Stat...

Page 6: ...only has an immediate start mode which is initi ated by clicking on the clock icon in the upper left of the display screen After a few seconds the real time tem perature and RH readings measured by the logger will show in the upper left quadrant of the display and the logged data will show in the lower left sector of the screen The graphic display will show the measured temperature trend Data in t...

Page 7: ...while moving the mouse to a central location on the graph Graphing Options Clicking on words Graph with markers toggles between adding or removing markers at each data point To return to the original view right mouse click anywhere in the graph and click on Set scale to default from the pull down menu Other options available on the pull down menu allow you to copy or save the graphic image print a...

Page 8: ...llowed by 70 to 90 F 20 to 30 C at 74 RH for 48 hours for rehydration If permanent damage to the internal sensor is suspected replace the data logger immediately Battery Replacement With a pointed object e g small screwdriver open the casing Gently pull off the casing and replace the 3 6 V lithium battery The two LED indicators will briefly light up alternating green yellow green Slide the logger ...

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