Kewtech KEW301, Инструкция по эксплуатации, Страница: 10 / 16

KEW301
8
To exit the MAX/MIN mode, one may press
and hold for two seconds.
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 or RS232 communication. Key
combination at power on or RS232
communication 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.
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 Calibration Point:
Room Temperature 23 ± 3°C
input Adjust VR Tolerance
0 °C VR1 ± 0.1 °C
190 °C VR2 ± 0.1 °C
1000 °C VR3 ± 1 °C
1900 °F VR4 ± 1 °F
Normally, performing offset Calibration with
thermal stabled ice water through VR1 will give
a very good calibration result.