Page 120 - PBL614 IM/SM500F-EN SM500F ( WIRO)
P. 120
SM500F
Field mountable paperless recorder 7 Configuration
Actual value / Desired value
1. Adjust the process or simulated input signal to a known value below 50% of the engineering range.
2. If 'Actual value' (in engineering units) is different from expected, set 'Desired value' to the correct value ('Offset adjust' and 'Span adjust' values are calculated automatically).
3. Repeat steps 1 and 2 for a value above 50% of the engineering range.
4. Repeat steps 1 to 3 for each input.
Reset adjustment
Select to reset 'Offset adjust' and 'Span adjust' (below) to zero and to 1 respectively.
Offset adjust / Span adjust
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 the millivolt source using appropriate compensating cable – see Table 2.1, page 20. For 2-lead resistance thermometers, either connect the resistance box at the sensor end of the leads or add the lead resistance to the calibration values.
118
IM/SM500F Rev. AA