SciCan STATIM 2000 Service Manual page 112

5. STAT IM 2000S Calibration
1. Reference voltage verification / adjustment
To verify / adjust the reference voltage:
1. Ensure the unit is OFF.
2. Connect the Control Box (1) to the Controller Board (2).
3. Connect the digital voltmeter (5) to the Vref terminals on the control box.
4. Set the voltmeter to read DC Volts with a resolution of 1mV.
5. Power the unit ON.
6. Adjust the VRH potentiometer until Vref is 2.520 V ± 0.001.
7. Once Vref is adjusted, apply a drop of non-conducting lacquer or nail polish to the
IMPORTANT NOTE: remember – the steam generator thermocouple does NOT require
calibration.
2. Chamber thermocouple and pressure transducer calibration
To calibrate the chamber thermocouple and pressure transducer:
1. Turn the power switch to OFF. Ensure the calibration jumper is in place and turn the power
2. To start the calibration cycle, press and release the UNWRAPPED cycle button on the
3. By using the Unwrapped key (+) and Wrapped Key (-) the pressure offset PO (at
4. After 30 seconds, the calibration cycle will continue by entering the heating up phase.
5. During calibration the unit will run a normal cycle.
Page 110
adjustment screw of the potentiometer.
switch ON. The LCD will read (for example):
Where
PPP.P = actual chamber pressure in kPa.
PO = chamber pressure hexadecimal offset value.
TTT.T = theoretical pressure calculated from the actual chamber temperature.
CO = chamber temperature hexadecimal offset value.
CCC.C = actual chamber temperature in °C.
control box and then press the START button. Adjust Press! will appear in the display.
atmospheric pressure) can now be adjusted until the reading on the LCD display (as
displayed in the PPP.P field) matches the external pressure reference meter's reading.
The PO field will then show the new pressure offset. NOTE: This has to be done within
30 seconds.
STAT IM 2000/2000S
PPP.P PO TTT.T CO
CCC.C
PPP.P PO TTT.T CO
Adjust Press! CCC.C
STATIM 2000/2000S/2000 G4 Service Guide
96-108639 Rev 3.0
Service Guide