Pr
o
Minent
®
Page 38
Ozone
8.2.2.2
DULCOTEST
®
OZE Ozone Sensor, Electrical Installation
IMPORTANT
• Do not switch off the measuring system during interval operation!
If required, switch on metering unit time-delayed!
• In case of sensor failure, an incorrect measuring value may be present at the input of
the control unit. Design the electrical installation such that it will not result in any
uncontrolled metering and consequential damages!
When connecting to a
ProMinent
®
devices
When connecting to ProMinent control units (e.g. DULCOMETER
®
D1C), the safety requirements
on the interface are automatically met.
The OZE 3-mA is a sensor with a passive 4-20 mA two-wire interface, i.e. the power is supplied
externally, e.g. via the control unit.
Electrical
Installation
Turn the adapter of the sensor one quarter turn anti-clockwise and pull off (bayonet mount).
Loosen the clamping screw of the M12 screw fi tting and feed through the measuring line from
the control unit.
Strip the cable ends and connect to the 2-wire connector: 1 = Plus, 2 = Minus.
Electrical
connection
to sensor
1 2
5 cm
Position approx. 5 cm of the measuring line in the sensor and tighten the clamping screw of
the M12 screw fi tting.
Fully insert the sensor into the housing and gently turn clockwise up to the stop. Ensure that
the lugs of the bayonet mount do not break.
8.2.2.3
DULCOTEST
®
OZE Ozone Sensor, Running-In
IMPORTANT
• The sensor may not be used in surfactant-containing water or solutions!
• Do not switch off the measuring system during interval operation!
After any operation without ozone, running-in periods are to be reckoned with.
If required, switch on metering unit time-delayed!
If no ozone is metered for a longer period of time, the sensor must be disconnected
from the power supply and stored dry.
Running-In
Period
The sensor requires a certain running-in period to be able to provide a stable reading.
Initial commissioning:
2 - 6 h
Recommissioning:
1 - 3 h
Replacement of diaphragm/electrolyte: approx. 0.5 h
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24.02.2009 11:56:05 Uhr
24.02.2009 11:56:05 Uhr