TECPEL DTM-322, Instruction Manual

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HUMIDITY TEMPERATURE METER
4
TX
RX
GND
Press "MAX MIN" again, MAX, and MIN will blink together. This means that all these data is updated
in the memory and the reading is the present temperature.
One may press "MAX MIN" to circulate the display mode among these options.
When the meter is under "MAX MIN" operation, “
°C “ “ °F ” “
U
REL ” button are disabled.(when you
press “ °C “ “ °F ”“
U
REL ” button in "MAX MIN" mode, there will be two continuous beep)
To exit the MAX/MIN mode, one may press and hold "MAX MIN" for two seconds.
4.7 Relative Operation:
When one press the“
U
REL ” button, the meter will memorize the present reading and the
difference between the new reading and the memorized data will be shown on the display, Press the
“
U
REL ” button again to exit the Relative operation. When the meter is under relative operation,
“ °C/°F ” button is disabled. ( when you press “ °C “ “ °F ” button in relative mode , there will be two
continuous beep )
4.8 Auto Power Off:
By default, when the meter is powered on, it is under auto power off mode. The meter will power
itself off after 30 minutes if no key operation and no RS232 communication.
Combination at power on can disable auto power off.
One may press and hold “
HOLD ” button and then power on the meter and there will be two
successive beeps to indicate that auto power off is disabled and the will not show up.
4.9 Low Battery Condition
When the battery voltage is under proper operation requirement, the symbol will show on the
LCD and the battery need to be replaced with new one.
4.10 Digital Output:
The Digital Output is a 9600bps N 81 serial interface.
1.Don’t touch or manipulate the sensor.
2.Don’t expose the sensor to direct light , this causes a false reading.
3.Don’t expose the sensor to static electricity.
Appendix: Thermo couple probe specification
Model Range Tolerances Description
TP-K01
Bead probe
-50 ℃ to 200 ℃
-58
℉
to 392
℉
± 2.2 ℃ or ± 0.75 ％
(
±
3.6
℉
or
±
0.75
％
)
with Teflon tape insulation Maximum
insulating temperature : 260
℃
TP-K01:
probe for general condition measurements, especially for
complex and hard to reach places.
WARNING!
TECPEL