Procedure - Full Scale Calibration Using Deltav - Emerson ROSEMOUNT 5081-A Instruction Manual

MODEL 5081-A
CALIBRAtE
Grab spl
EXIt ENtER
CALIBRAtE
Cal
3 . 20
EXIt ENtER
12.5 PROCEDURE — FULL SCALE CALIBRATION USING Deltav
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.
3. Access: deltaV Explorer/Context Menu
Calibrate Amperometric Sensor (method_pv_cal)
Method Steps:
a. displayed: Current PV Measurement
Prompt: Is value stable?: Yes; No; Abort
If "No" is chosen, the PV measurement is re-read.
b. If "Yes" is chosen, the PV measurement and the new sensitivity value are shown.
the method concludes.
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.
SECTION 12.0
CALIBRATION - OzONE
85