wtw DIQ/S 181, Руководство по эксплуатации

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DIQ/S 181
Overview
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ba77083e01 02/2015
1 Overview
1.1 Structure and function
With the universal transmitter DIQ/S 181, one digital sensor can be
operated. The universal transmitter has three relay outputs and two
current outputs to be connected to existing process control systems.
The universal transmitter DIQ/S 181 serves as a terminal and controller
in the system 181.
Sensor One digital single sensor (one sensor for one main parameter) at a time
can be connected to the universal transmitter DIQ/S 181. This means
one main parameter (e.g. pH, D.O., turbidity value...) and one secon-
dary parameter in addition (e.g. temperature) can be displayed and ad-
ministrated. Each sensor is automatically recognized after being
connected and immediately starts measuring.
The sensor is connected directly to the universal transmitter DIQ/
S 181.
Relay and current
outputs The relay and current outputs can be linked with the connected sensor.
Linked outputs can be used to monitor the connected sensor and for
the output of measured values.
A relay output can be programmed as:

Monitoring relay

Limit monitor

Proportional output of measured values (pulse width output or fre-
quency output)

Control unit of a sensor cleaning system driven by compressed air.
A current output can be programmed as an analog output.
For quick orientation, the states of all relay and current outputs are
clearly indicated on the display.
Compressed air-driven
cleaning system
The universal transmitter DIQ/S 181 is prepared for the compressed
air-driven, time-controlled sensor cleaning function. For this, a DIQ/
CHV valve module and if necessary a CH cleaning head is required
(both available as accessories). The universal transmitter DIQ/S 181
controls the cleaning process. The universal transmitter provides the
supply voltage and control relay for the compressed air valve in the
DIQ/CHV valve module. This enables a simple setup and uncomplica-
ted wiring.
Suitable sensors for the universal transmitter DIQ/S 181
are listed in the WTW catalog or on the Internet.