ABB ScreenMaster RVG200 Operating Instructions Manual page 115

ScreenMaster RVG200
Paperless recorder
Reset adjustment
Offset adjust
Span adjust
Operator Calibrate
Sensor Calibration
Adjusted Value
Offset adjust
OI/RVG200-EN
Press to reset
Offset adjust
respectively.
Manually fine-tune the offset adjust and span adjust values to remove
process errors. These are calculated values applied to the raw input
signal.
Note. If simulating thermocouple inputs, connect a millivolt source using
appropriate compensating cable – see Table 3.1, page 18. For 2-lead
resistance thermometers, either connect a resistance box at the sensor
end of the leads or add the lead resistance to the calibration values.
Engineering
high
Adjusted
value
Engineering
low
Unadjusted value
Engineering
low
Without adjustment
(Span adjust = 1, Offset adjust = 0)
Set to On to enable input adjustment from the
page 44.
An additional adjustment to remove known sensor errors.
Note. This adjustment is applied after the input calibration.
The input value with the sensor calibration applied.
Enter the required offset in engineering units.
and (below) to zero and 1
Span adjust
Engineering
high
Adjusted
value
Engineering
low
Engineering Engineering
high low
With adjustment
(typical example)
Service
7 Configuration
Span adjust (<1)
Offset adjust (>0)
Unadjusted value
Engineering
high
menu – see
113