Emerson Rosemount MCL-220 Reference Manual page 58

Calibrate
May 2019
9. To force the transmitter to accept the zero current, choose Yes. To repeat the
10. To return to the main display, press MENU and then EXIT.
7.3.2 Calibrate the sensor
Procedure
1. Place the monochloramine sensor in the flow cell. Adjust the sample flow until
2. Adjust the monochloramine concentration until it is near the upper end of the
3. Press MENU.
4. Press ENTER.
5. Select Sensor 1.
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calibration, choose No.
If the zero current is much larger than expected, the Sensor zero failed screen
appears.
The transmitter will not update the zero current.
water overflows the inside tube in the constant head flow controller.
operating range. Wait until the transmitter reading is stable before starting
calibration.
The main Menu screen appears. The cursor is on Calibrate.
Reference Manual
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