Verification Procedure - Emerson Micro Motion 3711 Configuration And Use Manual

Calibration
B.2.3

Verification procedure

You can verify a calibration at the calibration points used during calibration, or you can verify a
calibration at selected intervals of the process span. For example, you could verify a calibration at
4 mA, 5 mA, 6 mA, ... 20 mA, if you calculate the EU values to be associated with each value of the
input. See the example calibrations following the procedure.
To verify a calibration:
1. Select
Configure > I/O > AI Points
2. Using the Analog Inputs dropdown list, select the AI that you want to calibrate. To calibrate
the RTD, select RTD.
3. Open the AI Calibration panel.
4. To get a current AI value, enable
5. Click
Freeze
6. If you are calibrating an RTD, disconnect the RTD input from the Model 3711 RTD terminals,
and connect a decade box (or comparable equipment).
7. Click
Verify
Figure B-2 Verification dialog box
8. To verify the zero point:
a. Set the input from the test device to 4 mA.
b. In the
c. View the live reading.
d. Click
9. To verify the span calibration:
a. Set the input from the test device to 20 mA.
b. In the
c. View the live reading.
d. Click
Configuration and Use Manual
.
Auto Scan
. This holds the AI value from Step 4.
. The dialog box shown in Figure B-2 is displayed.
field, enter the minimum value in EUs.
Dead Weight/Tester
!Log Verify .
field, enter the maximum value in EUs.
Dead Weight/Tester
.
!Log Verify
or click Update .
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