Fisher Scientific Fisher Sei 100L Gravty, Руководство по эксплуатации

Страница: 39 / 63

Fisherbrand 50145736 | 31
Handling and Control | Chapter 7
Calibration of the reference sensor
The temperature measurement for calibration is performed with a reference sensor placed in the
center of the inner chamber.
After placing the reference sensor in the chamber wait at least 2 hours until the temperature is stabilized.
In operator mode the temperature offset can be adjusted.
Adjustment of the temperature offset:
Press 2 x to scroll to the offset input
OFFS.
If an alarm is displayed the button must be pressed 3x.
Press or to set the required value in 0.1 °C steps.
Acknowledge the entry with or wait approx. 2 min for automatically storage of the value.
The new temperature is adjusted.
For example:
The controller adds the adjusted offset to the measured value on the display.
Calibration parameters
Only trained personnel should perform the calibration.
Be aware that initial calibration parameters are not stored!
Before
37.1
37.0
offset 1.5 °C
then
37.0
38.6
NOTE
Entering an offset value more than 2 °C, an alarm is indicated and is present as long as the
readjustment takes.
Only 1 offset value can be entered. The entered offset value is valid for the complete
temperature range. This means, if the setpoint temperature is changed the same offset
value remains.