Emerson VSG & VSSG Troubleshooting Guide download pdf (Page 41)

VSG/VSSG • Compact Logix PLC Manual •Vilter/Emerson • 35391CL

Instrument Calibration Pressures

Confirm the “mA Reading” value (the raw mA value at the analog module) is correct and stable.

If not already done, set the Minimum mA to 4.00

If not already done, set the Maximum mA to 20.00

Set the Minimum Pressure to the actual minimum pressure at 4mA as marked on the transducer.

Set the Maximum Pressure to the actual maximum pressure at 20mA as marked on the transducer.

Set the Offset to zero unless required otherwise. The offset value adds to the resultant linearly scaled value

and results in the Calibrated Value which is used for control. Alternatively, set the Target Value to desired/

actual Pressure. This will calculate the offset based on actual vs desired pressure.

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Emerson VSG & VSSG Troubleshooting Guide Page 41