Hach Chlorine Sensor User Manual page 9

Install the sensor
The sensor must be installed in the flow cell, connected to the gateway,
conditioned and then calibrated before initial use and after maintenance
is done on the sensor. To install and connect the sensor, refer to the
illustrated steps.
To condition the sensor, operate the sensor for 6 to 12 hours until the
sensor readings stabilize. Refer to Diagnostic and test menu
on page 20 for information about viewing sensor readings.
Note: The controller and the sensor connected to it must remain in operation
continuously to maintain calibration.
English 9