Engineering manual - UniSAB III 1.10.8
258/346
001930 en 2021.06
7. Calibration
7.1
Before start-up
Before initial compressor start-up and after service, adjustment of transducers and position transmitters
must be carried out. Their values are usually preset from factory but must be rechecked before start-up.
This is very important as failure to adjust the values may cause malfunctioning during operation. Service
may for example be in connection with replacement of controller module, pressure transducers, position
transmitters or battery. See also chapter
Insufficient or incorrect setting of pressure transducers may cause compressor breakdown or
personal injury.
The temperature sensors must not be calibrated as they are connected electrically with four conductors
which automatically makes up for line resistance.
7.2
Pressure transducers
Calibrate the pressure transducers at atmospheric pressure in the compressor.
Use the following pressure transducers:
Unit = bar
Compressor type
Max.
press.
Max. permissi-
ble deviation at
Atm. press
Meas. point
SAB/
VMY
SMC
TSMC/
TCMO
HPC/
HPX
HPO
Suction
pressure
-1 - +9
-1 - +9
-1 - +9
-1 - +25
-1 - +25
33
55
+/- 0.2
+/- 0.5
Discharge
pressure
-1 - +25
-1 - +25
-1 - +25
-1 - +59
-1 - +59
55
200
+/- 0.5
+/- 1.2
Oil pressure
-1 - +25
-1 - +25
-1 - +25
-1 - +59
-1 - +25
55
200
+/- 0.5
+/- 1.2
Oil filter
pressure
-1 - +25
-1 - +59
55
200
+/- 0.5
+/- 1.2
Intermediate
pressure
-1 - +25
55
+/- 0.5
Internal suction
pressure,
SABflex
-1 - +25
55
+/- 0.5
Internal suction
pressure,
SABCube
-1 - +9
33
+/- 0.2
Oil pressure 2
-1 - +59
200
+/- 1.2
Table 54: Pressure transducers
Select the menu
Setup/Configuration/Calibration
and the following picture will appear:
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