Lauda Alpha A, Operating Instructions Manual

Page: 30 / 52

Alpha
30
Starting up
June 20, 2018/ YACE0092
7.9 Offset for the internal temperature probe
CAL
Keep attention: All change done here cause the loss of factory calibration!
Calibration should only be activated if a sufficiently accurate temperature measurement device is availa-
ble as reference.
If, during checking with a calibrated reference thermometer, (for example from the LAUDA DigiCal Se-
ries), a deviation is found, then the offset (i.e. the additive part of the characteristic) of the internal
measuring chain can be adjusted with the following function. The reference thermometer must be
dipped into the bath according to the details on the calibration certificate. Only offset values of
±
5 Kelvin
are accepted. Switching on the unit, the last used CAL value is preloaded again.
5x to
CAL
and 1x longer
than 3 seconds.

Call the option
CAL
.
or

Display flashes. Enter the value of the reference thermometer.

The selected value is displayed flashing.
Wait 4 seconds or

Display flashes 4 s

new value is accepted automatically,
or

value is immediately accepted with the <Enter> key.
7.10 Restoring works settings
dEF
If you would like to restore all the works settings except the probe cali-
brations
CAL
…
6x to
dEF

call the works settings
dEF
.

dEF
is flashing.
3 seconds long

Press <Enter> more than 3 seconds (display flickering).

After button release the changeover is acknowledged with
donE
,
the unit returns back to the mode
“Bath temperatur”.


Reset Values: Set = 25 °C, Hi = 105 °C, Lo = -30 °C, Cool = Auto
d E F