Memmert ICH 256 Climate Chambers (Generation 2003) - Manual (Page 60)

60
Advanced Functions
For each selected balance point ( Fig. 28 ), a positive or negative compensation correction value
can be set between -2.9 ºC and +2.9 ºC. There must be a difference of at least 10 ºC between
each of the individual balance points.
CAL. 1
+0,2 °C
CAL. 3
+0,3 °C
CAL. 2
-0,4 °C
Default
calibration
30°C 20°C 0° 10°C 40°C
Fig. 28 Temperature calibration (example)
Setting: Setting:
1. Choose SETUP and set the desired compensation temperature (see page 53 ) and the
accompanying compensation correction value to 0.0 °C.
2. Use a reference instrument to measure the deviation for the selected compensation
temperature.
3. Under SETUP, adjust the compensation correction value. If the measured reference
temperature is too low, the compensation correction value must be set with a negative
sign.
4. Perform a control measurement with the reference instrument.
5. If necessary, repeat the procedure for the other two balance points
Example: Temperature deviation at 35 °C is to be corrected.
1. Set compensation temperature CAL.2 under SETUP to 35.0 °C and set the corresponding
compensation correction value to 0.0 °C:
h
°C °C
2. With a calibrated reference instrument and at a defined setpoint temperature of 35 °C in
normal operation, an actual temperature of 34.6 °C is measured.