Pr
o
Minent
®
Page 108
CTE 1-mA
Loosen the M12 threaded connector and guide the 2-wire cable into the sensor. Leave an
approx. 5 cm length of the 2-core measuring line in the sensor.
Strip the two wires at their ends and connect them to the terminal block by using the screwdri-
ver provided: 1 = plus, 2 = minus
Tighten up the M12 connector.
Insert the top part of the sensor right into the housing and turn the top part clockwise as far as
it will go.
Electrical
connection
to
sensor
1 2
5 cm
Installation
Electrical installation of the DULCOTEST
®
PHEP or PHER sensor for pH
Connect the DULCOTEST
®
PHEP or PHER sensor for pH with the marked cable of the respective
controller DULCOMETER
®
D2C.
8.9.2.3
DULCOTEST
®
CTE Sensor for Total Chlorine and DULCOTEST
®
Sensor
PHEP or PHER for pH, Running-In
Running-In
DULCOTEST
®
CTE sensor for total chlorine
CAUTION
• The power supply to the measuring device and to the sensor must not be interrupted. If
the power supply is interrupted (> 2 hours) the sensor must be re-commis sioned.
• Do not switch off the measuring system during interval operation. After any operation
without chlorine, running-in periods must be reckoned with. If required, switch on
metering unit time-delayed! If no chlorine is metered for a longer period of time (weeks),
the sensor must be disconnected from the power supply and stored dry.
• The sensor’s current signal must not exceed 20 mA. Otherwise the 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 chlorine control system and
triggers an alarm. The monitoring equipment must not be automatically re-setting.
• Once the sensor has been commissioned it must be kept permanently wet.
After completed installation the controller can be switched on. The system should then be
allowed to run in for the set run-in period.
Running-In
Period
In order to achieve a stable display value the sensor should be run in for the following run in
periods.
First commissioning:
24 hour
After changing membrane: 1-6 h
Re-commissioning:
approx. 4-24 hours
pH/Chlorine
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