Product Description And Accessories; General Description - Grundfos Conex DIS-G Montage- Und Betriebsanleitung

7. Product description and
accessories
• The device offers high-precision measuring of
chlorine, chlorine dioxide and ozone.
– comprehensive limit value functions
– comprehensive alarm functions
– error message function for indication of
non-functioning sensors.

7.1 General description

®
The Conex DIS-G is a gas warning controller for
monitoring gas concentrations, for example in
storage or dosing rooms. With a maximum of two
independently connected sensors, the gas
concentration of chlorine, chlorine dioxide or ozone
can be displayed and monitored. Amperometric
sensors (sensor discs) are connected directly to the
®
Conex DIS-G.
The sensor Cl / ClO does not provide selective
2 2
measurement. In case both substances are present,
the measured value includes both.
The measuring parameter does not have to be set in
the software (or device). It is selected using the
corresponding sensor.
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3
Fig. 2 Gas warning system, example of an application
Each of the two sensors is provided with electrically
isolated current outputs to output the measured
concentration, two electrically isolated limit value
transmitters and an alarm relay to control the
warning and safety equipment.
®
The Conex
through permanent sensor monitoring and alarm
relays.
How the system operates
• The gas sensors generate a current proportional
to the gas concentration in the air.
• The Conex
– amplifies the sensor current
– triggers an initial warning, for example when
the first limit value is exceeded
– activates the relevant warning and safety
equipment when the second limit value is
exceeded
– outputs the measured concentration at both
sensors as a 0 (4)-20 mA signal via the current
outputs (for example for recording).
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1
3
DIS-G meets high safety requirements
®
DIS-G gas warning controller
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5
4
Conex DIS-G
Alarm 1
Alarm 2 OK Esc
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