Temperature Alarms; Specifications - Extech Instruments TM20 User Manual

Temperature Alarms
Set high/low alarm limits and the meter will audibly and visually alert the user if either limit is
exceeded. To set the alarm values, follow these steps:
1. Press the ALARM/SET button once from the normal operating mode; the upper limit value
and its symbol (up arrow) will flash.
2. Set the temperature limit by pressing the ▲ button (press and hold for fast scrolling).
3. Now use the MAX/MIN button to activate/deactivate the alarm (alarm symbol will appear
in the upper right hand corner of the LCD when activated).
4. Verify the setting by pressing ALARM/SET.
5. Perform the same steps for the low alarm limit.
After setting the alarms, the upper and lower limit symbols (▲▼) will be displayed on the LCD
indicating that an upper and a lower alert value has been set. If the measured temperature
exceeds either limit, the alarm beeper will sound for 1 minute. The alarm beeper icon and the
corresponding arrow will flash. Pressing any button will switch off the alarm.
When the temperature returns to the desired range the audible alarm will stop sounding. The
arrow will remain flashing however to show that the temperature was higher or lower than a set
value at least once in the past. Press the ▲ button to switch OFF the flashing arrow.
Specifications
Display
Measurement range
Resolution
Accuracy
Protection safety rating
Low battery indication
Power supply
Meter Dimensions
Cable length
All rights reserved including the right of reproduction in whole or in part in any form
Multi‐function LCD
TM20: ‐40 to 70
TM25: ‐40 to 200
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0.1 C/ F
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0.5 C: 0 to 24
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1.0 C: ‐20
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2.0 C: ‐40
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0.9 F: 32
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1.8 F: ‐4
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3.6 F: ‐40
IP 65 rating on meter and sensors
Battery symbol appears on the LCD
CR2032 3V button battery
86(L) x 57(H) x 30(D) mm / 3.4(L) x 2.2(H) x 1.2(D)"
TM20 cable: 209m (9.6 ft.)
TM25 cable: 1.5m (5 ft.)
Copyright © 2013 FLIR Systems, Inc.
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C (‐40 to 158
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C (‐40 to 392
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C
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to ‐1 C and 25 to 49
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to ‐21 C and 50 to 200
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to 75 F
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to 31 F and 76 to 120
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to ‐5 F and 121 to 392
www.extech.com
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TM20-TM25-EU-EN V1.6 4/13