Procedure - Full Scale Calibration - Emerson Rosemount Analytical HART 5081-A-HT Instruction Manual

MODEL 5081-A

12.3 PROCEDURE — FULL SCALE CALIBRATION

1. Place the sensor in the process liquid. Adjust the sample flow until it is within the range recommended for the

sensor. Refer to the sensor instruction sheet.

2. Adjust the ozone concentration until it is near the upper end of the control range. Wait until the reading is sta-

ble before starting the calibration.

CALIBRATE

Sensor Cal

EXIT

NEXT

ENTER

CALIBRATE

time delay

EXIT

NEXT

CALIBRATE

Grab spl

EXIT

ENTER

CALIBRATE

Cal

3

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EXIT

ENTER

3. Press CAL on the infrared remote controller.

4. Press NEXT. The SEnSor CAL submenu appears.

5. Press NEXT. The tiME dELAy message appears and remains until the

sensor reading meets the stability criteria set in Section 7.6. To bypass

the time delay, press ENTER.

As soon as the stability criteria are met (or ENTER is

pressed to bypass the time delay), the transmitter stores

the sensor current. Therefore, if the chlorine level in the

process liquid drifts while the sample is being tested, there

is no need to compensate for the change when entering

test results in step 7.

6. The GrAb SPL (grab sample) prompt appears. Take a sample of the

process liquid and immediately determine the concentration of ozone in

the sample. Press ENTER.

7. Use the arrow keys to change the flashing display to the concentration

of ozone determined in the grab sample. Press ENTER to save.

8. Press RESET to return to the main display.

9. During calibration, the transmitter calculates the sensitivity (nA/ppm) of

the sensor. To check the sensitivity, go to the main display. Press DIAG.

Press NEXT until the SenSitvty (sensitivity) prompt appears. Press

ENTER to display the sensitivity in nA/ppm. The sensitivity of a

499AOZ sensor is about 350 nA/ppm at 25°C.

CALIBRATION - OzONE

NOTE

SECTION 12.0

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