Operation; Run-In Period; Calibration - ProMinent DULCOTEST CLT 1 Serie Instrucciones De Servicio

Operation

8
CAUTION
• The power supply to the measuring device and to the sensor must not
• Do not switch off the measuring device during intermittent operation.
• The sensor's current signal must not exceed 20 mA. Otherwise the
• Once the sensor has been commissioned it must be kept permanently
After completed installation the controller can be switched on. The system
should then be allowed to run in for the set run-in period.
8.1
In order to achieve a stable display value the sensor should be run in for the
following run in periods.
First commissioning:
After changing membrane:
Re-commissioning:
8.2
CAUTION
• Carry out a slope test every time the membrane or electrolyte is
• Avoid air-bubbles in the sample flow. They can attach at the mem-
• For proper function of the sensor, the slope test has to be repeated
• If installing the sensor outside Germany, please comply with the local
36
Operation
be interrupted. If the power supply is interrupted (> 2 hours) the sensor
must be re-commissioned (see Chapter 8.1).
Dosing devices may be controlled by timer switches
sensor may be damaged, which may result in dangerous overdosing
within a control system. To avoid this, install a monitor, which
permanently switches off the chlorite control system and triggers an
alarm. The monitoring equipment must not be automatically re-
setting.
wet.

Run-in period

Calibration

changed.
brane, which may cause too low measured values. Within a control
system this may lead to dangerous overdosing.
regularly.
regulations for calibration intervals.
6-12 h
3-6 h
approx. 6-12 h
®
ProMinent