Compatible Control - Fisher UK Extranet

4. Thermoregulation
via Controller
4.5 Calibration
2. Offset calibration
Offset
Calibration
MAIN MENU:
Mains Failure Auto
I-> Offset Calibration
PI-Parameters
OFFSET CALIBRATION:
I-> Internal sensor
Process sensor
Exit
Please enter:
Internal sensor
0.0 C
Please enter:
Internal sensor
-1.5 C
„Offset Calibration“ option
Suitable for calibrating all the sensors used.
Use a calibrated reference thermometer as a
second temperature sensor for calibration in
the area of the sensor to be calibrated.
Compare the actual controller temperature
displayed to the reference thermometer
reading.
Any deviation can be corrected via the
options provided in the „Internal Sensor“
submenu by entering the difference with the
versed sign.
Example:
Controller display (Internal Sensor) 10 °C,
reference thermometer reading 8.5 °C,
difference = 1.5 K.
Calibrate by entering „-1.5“. The output level
of the controller display will decrease by 1.5
K. The controller display will now correspond
to the reference thermometer reading.
OFFSET CALIBRATION:
Internal sensor
I-> Process sensor
exit
Submenu selection: „Process Sensor“
Calibrate the process sensor (e.g. in an
external bath)
Proceed as described for the „Internal
Sensor“.
Offset calibration shifts the entire temperature level by one value on
a linear level.
Two-point calibration, on the other hand, includes all the values
between T1 and T2.
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