4
Operation
14
4.5 Displaying temperature values
1
- Press
to change the temperature
measurement parameter.
ê
The temperature measurement
parameter switches between TH2O,
in °F for °F.
4.6 Field calibration
- Field calibration should be carried out at <15 hPa, field calibration is
not possible at ambient pressure.
- The connected vacuum pump should ideally be able to create a
minimum trace pressure of <0.1hPa.
- Field calibration tunes the Vac Checker
â
to your vacuum pump.
1
- Connect the vacuum pump to a port of the Vac Checker
â
.
- Close the second port with the sealing cap.
- Start the vacuum pump.
2
- Wait until minimum pressure is reached.
- Press
and
at the same time for at least 3 seconds.
ê
The Vac Checker
â
is zeroed and field calibration is completed.
