Memmert HPP 108/749 Constant climate chamber (Generation 2003) - Manual (Page 49)

49
Advanced functions
Example: Temperature deviation at 30 °C should be corrected.
1. Set compensation temperature CAL.2 in the SETUP to 30.0°C and set accompanying
compensation correction value to 0.0°C:
h
°C °C °C
2. With a calibrated reference instrument and at a set setpoint temperature of 30 °C in nor-
mal operation, an actual temperature of 29.6 °C is measured.
3. Set the compensation correction value for CAL.2 in the SETUP to - 0.4°C:
h
°C °C °C
4. After the calibration procedure, the reference instrument should now display 30°C.
5. With CAL.1, another compensation temperature below CAL.2 can be programmed in the
same way, and with CAL.3, one lying above this.
If all compensation correction values are set to 0.0°C, the factory calibration settings are
restored.
7.5.2 Humidity calibration
The constant climate chamber can be calibrated for the individual customer by means of two
balance points at 20 and at 90 % relative humidity. For each selected balance point, a positive
or negative compensation correction value can be set between and –10 % and +10 % ( Fig.
28 ).
rh 20
+3,0 %
rh 90
-2,0 %
60% 40% 0% 20% 80% 100%
Default calibration
Fig. 28 Humidity calibration (example)