Lauda V1R20 - Calibrating the Temperature Probe

7.6 Calibrating the temperature probe
Only carry out the steps described here using a reference thermom-
eter that has been calibrated for the required degree of accuracy.
Otherwise you will not achieve a suciently accurate measurement
result and you should not change the factory calibration of the
constant temperature equipment.
If, when checking the temperature in a steady state, you discover a constant
temperature deviation of T
int
or T
ext
from the reference thermometer, you
can equal this out using the Calibration menu point.
With the menu point Oset (1-point comparison), the characteristic of the
temperature switch is adjusted in parallel by the input value. With the menu
point 2-point calibration (2-point comparison), the characteristic of the
temperature switch is adjusted and the slope of the characteristic is changed.
It is possible to change the T
int
and T
ext
temperature values within a
range of ±3 K respectively.
 For internal bath applications, hang the reference thermometer in the
bath. Observe the corresponding information on the calibration certifi-
cate.
 For external applications, install the reference thermometer in the inlet
of the constant temperature equipment. Observe the corresponding
information on the calibration certificate.
 Wait until the system is in a steady state before measuring the tem-
perature.
1. Open the Home window.
2.
Tap the Settings  Calibration  Internal Pt1000 / External Pt100
 Oset tile.

The Input window opens.
3. Enter the value of the temperature read from the reference ther-
mometer.
4. Press [OK] to confirm the new oset value.

The new value has been accepted.
Oset
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