V/D
S
ERIES
R
EGULAR TESTS AND MAINTENANCE
Revision: 2.1 5-9
5.2 Calibration and adjustment
The analogue inputs on the autoclave can be calibrated either via a
connected PC using the Systec service software (see chapter 6.2.7,
“Calibration”) or using the menu of the control unit.
Do not give any codes for access levels to unauthorised
persons!
The code for access level 4 is required for calibration (service
technician, see chapter 8.1, “Access level”). This code is
exclusively reserved for service technicians and must never
be given to the operator.
The measurement range during the calibration must
correspond to the conditions of use!
Temperature sensors do not measure in a completely linear
manner. This means that the calibration is more exact the
closer the calibration measurement comes to the actual
subsequent use.
Systec references:
− Pressure between 100 and 300 kPa
− Temperature between 80 °C and 130 °C
− Drain temperature between 20 °C and 80 °C
Only adjust if the temperature and pressure deviate!
Only make adjustments if the temperature deviates by more
than 0.3 K and the pressure deviates by more than 3 kPa.
A two-point calibration is used:
Two reference measurements are taken at the lower (low value) and
upper (high value) end of the required measurement range. These are
compared with current measurements from the autoclave and are aligned
to the straight line interpolation by recalculating the gain and offset values.
The electrodes should not be calibrated
The service dialogue also shows the measured values for the
electrodes (Elect. High, Elect. Low, Elect. Chamb.). These
values are for information only.
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