ThermoWorks P795 PRINTING DATALOGGER THERMOMETER - Manual (Page 9)

The Instrument has a special Tare/Zero-button. Pressing the [F1] key once, the
instrument will subtract the last measured value from the actual measured value. So
if the measurement does not change zero appears on the instrument’s display. If you
press the [F1] key once again the instrument move to the Normal-Mode.
E.g. Display with activated Zero-Mode:
The arrow on the left indicates that the instrument is working
in the Zero-Mode [F1].
Note: After switching off the instrument, this function is automatically deactivated.
2. Power supply
For the power supply of the instrument a 9 Volt dry battery is used. To exchange the
battery switch of the instrument and open the rear battery cover. Remove the battery
from the instrument and replace with a new battery.
The „BAT“ symbol in the display indicates that the battery needs to be exchanged.
After displaying the „BAT“ symbol, the instrument allows app. 1 hour of further
operation.
The battery symbol indicates according to the battery status
between 1 to 3 segments.
Note: For protection of our environment please don’t put the battery into general
household waste, but use a local authority approved disposal method.
3. Error Codes
By displaying the following error codes the instrument support the operation of the
instrument.
Error Meaning
Open no probe or wrong probe is connected