Memmert HPP 108/749 Constant climate chamber (Generation 2003) - Manual (Page 48)

48
Advanced functions
7.5 Calibration
7.5.1 Temperature calibration
The constante climate chamber can be calibrated customer-specifically using three calibration
temperatures of your choice:
► CAL.1 temperature calibration at low temperature
► CAL.2 temperature calibration at medium temperature
► CAL.3 temperature calibration at high temperature
For each selected balance point ( Fig. 27 ) a positive or negative compensation correction value
can be set between –4.9 ºC and +4.9 ºC. There must be a difference of at least 10 K between
the individual balance points.
CAL 1
+0,5°C
CAL 3
+0,8°C
CAL 2
-0,4°C
factory
calibration
37°C
20°C 0°C
5°C
Fig. 27 Temperature calibration (example)
Setting:
1. Set the desired compensation temperature in the SETUP (see page 42 ) and set the accom-
panying compensation correction value to 0.0 °C.
2. With a reference instrument, measure the deviation in the stationary state in the selected
compensation temperature.
3. Set the compensation correction value in the SETUP. If the measured reference tempera-
ture is too low, the compensation correction value must be set with a negative sign.
4. Perform a control measurement with the reference instrument.
5. Repeat the procedure for the other two balance points if necessary.