3. To calibrate the sensor response in chlorinated water, select Grab and follow the
prompts.
Be sure the sensor is installed in the flow cell in the TCL and the sample is flowing
down the inside tube of the overflow sampler. Also verify that reagent is being
delivered to the sample and that the air pump is working.
If the calibration is successful, the transmitter displays the Calibration complete
screen and the sensitivity (nA/ppm). The screen also shows the typical sensitivity
range for the sensor and the recommended acceptance criterion. You are asked to
accept the calibration. Press INFO for an information screen to aid with
troubleshooting if the calibration is not acceptable.
If the sensitivity is badly in arror, the transmitter displays the Calibration failed
screen. Press INFO for troubleshooting.
8.5 Calibrating the analog outputs
Complete the following steps to calibrate the analog outputs in your 56 Transmitter.
1.
Choose the appropriate output in Section 8.2 and follow the prompts to trim the
selected output.
If you want more information about a calibration step, press INFO.
Once the calibration is complete, the screen shows the results of the calibration. The
screen also shows some acceptance criteria to help you determine whether to
acccept the calibration.
2. Press INFO for an information screen to aid with troubleshooting if the calibration
results are not acceptable.
8.6 Reset
8.6.1 Purpose
There are three resets.
1. Reset all user settings, including calibration and program settings, to the factory
default values. The transmitter will return to Quick Start.
Important
The event logger and data logger will be unaffected.
2. Reset sensor calibration to the default value. The transmitter will clear all user-
entered calibration data for the selected sensor. It will leave all other user-entered
data unaffected.
Calibration
Manual 45
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