Emerson Process Management 9110-00A, Series 9110 Detailed Calibration For Raise/Lower Model

2.Reading on test gauge should be minimum range value (3 or 6 psi), ±5%.

3.Adjust input test circuit for 5.000 V.

4.Reading on test gauge should be maximum range value (15, 27 or 30 psi), ±5%.

5.If electronic calibration is correct but output pressure is in error, no further adjustments are possible. Refer to topic 5.2 for possible pneumatic faults.

6.Calibration is complete. Restore unit to normal operation.

Figure 5-3 - Raise/Lower Test Setup

5.8 DETAILED CALIBRATION FOR RAISE/LOWER MODEL

If calibration errors were found using the procedures of topic 5.6, the procedures described herein for Raise/Lower models are performed.

5.8.1 Feedback Zero & Span

The tracking voltage provided by the motor-driven feedback potentiometer is calibrated against the pressure output as follows:

1.Adjust input test circuit for minimum range indication on test gauge (3 or 6 psi).

2.DMM #1 should read 0.995 V, ±.004.

3.If reading of step 2 is out of tolerance, slightly loosen two screws on body of feedback pot (Figure 5-1) and rotate body until DMM #1 reads as specified in step 2. Secure pot screws to lock in setting.

4.Adjust input test circuit for maximum range indication on test gauge (15, 27 or 30 psi).

CI-9110 5-7 Service