Calibrating Analog Outputs - Emerson Rosemount FCL-01 Reference Manual

Reference Manual
00809-0100-3412
6. Choose
7. Once the reading is stable, measure the pH of the liquid using a referee instrument.
8. To return to the main display, press MENU and then EXIT.
5.5

Calibrating analog outputs

5.5.1 Trimming analog outputs
Although Emerson calibrates the analog outputs at the factory, you can trim them in the
field to match the reading from a standard milliameter. You can trim both the low (0 or 4
mA) and high (20 mA) outputs.
5.5.2 Calibrate analog outputs
Procedure
1. Connect a calibrated milliameter across the output you wish to calibrate. If a load is
2. Press MENU.
3. Press ENTER.
4. Choose the output you wish to calibrate.
Rosemount FCL 1056
.
Standardize
Because the pH of many natural and treated waters depends on temperature,
measure the pH of the sample immediately after taking it. For poorly buffered
samples, determine the pH of a continuously flowing sample from a point as close
as possible to the sensor. Change the reading to match the reading of the referee
instrument.
If the calibration is successful, a screen is displayed for five seconds. The display
then returns to the screen in Step 4. If the calibration is not successful, the existing
calibration data is not changed. A screen appears identifying the error (high slope,
low slope, or offset error). For troubleshooting, see
message is showing - chlorine.
already connected to the output, disconnect the load.
Do not put the milliameter in parallel with the load.
The main Menu screen appears. The cursor is on
The transmitter simulates the low output current.
October 2023
Troubleshooting when no error
.
Calibrate
Calibration
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