Procedure - Manual Calibration Using The Infrared Remote Controller - Emerson ROSEMOUNT 5081-A Instruction Manual

MODEL 5081-A
13.4 PROCEDURE — MANUAL CALIBRATION USING THE REMOTE CONTROLLER
1. Verify that manual calibration has been enabled. See Section 7.8.
2. obtain two buffer solutions. Ideally, the buffer pH values should bracket the range of pH values to be meas-
ured. Also obtain a reliable thermometer.
3. Remove the sensor from the process liquid. If the temperature of the process and buffer are appreciably dif-
ferent, place the sensor in a container of tap water at the buffer temperature. do not start the calibration until
the sensor has reached the buffer temperature. thirty minutes is usually adequate.
CALIBRAtE
PH CAL
EXIt NEXt ENtER
CALIBRAtE
MAn CAL
EXIt NEXt ENtER
CALIBRAtE
CAL bf1
EXIt NEXt ENtER
CALIBRAtE
bf1
04 . 01
EXIt ENtER
CALIBRAtE
CAL bf2
EXIt NEXt ENtER
CALIBRAtE
bf2
10 . 00
EXIt ENtER
4. Press CAL on the remote controller.
5. Press NEXt until the PH CAL prompt appears. Press ENtER.
6. the MAn CAL message appears. Press ENtER.
7. the CAL bF1 prompt appears. Rinse the sensor and the thermometer
and place them in the first buffer. Be sure the glass bulb and reference
junction are completely submerged. Swirl the sensor. the main display
will show the pH of the buffer based on the previous calibration. Press
ENtER.
8. Wait until the pH reading in the main display is constant. use the arrow
keys to change the flashing display to the value of the buffer at the
measurement temperature. Press ENtER.
9. the CAL bF2 prompt appears. Rinse the sensor and the thermometer
and place them in the second buffer. Be sure the glass bulb and refer-
ence junction are completely submerged. Swirl the sensor. the main
display will show the pH of the buffer based on the previous calibration.
Press ENtER.
10. Wait until the pH reading in the main display is constant. use the arrow
keys to change the flashing display to the value of the buffer at the
measurement temperature. Press ENtER.
11. Press RESEt to return to the main display.
SECTION 13.0
CALIBRATION - pH
89