YSI IQ S ENSOR N ET System 182 - Manual (Page 8)

Overview System 182
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Relay and current
outputs
The relay and current outputs can be linked with sensors. Linked
outputs can be used to monitor sensors and for the output of measured
values.
A relay output is programmable as:
 Monitoring relay
 Limit monitor
 Proportional output of measured values (pulse width or frequency
output)
 Control unit of a compressed air-driven sensor cleaning system.
A current output is programmable as:
 Analog output
 PID controller
For quick orientation, the states of all relay and current outputs are
clearly indicated on the display.
Compressed air-driven
cleaning system
The DIQ/S 182 Universal Transmitter 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 per
sensor (both available as accessories). The cleaning procedure is
controlled by the Universal Transmitter. 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
uncomplicated wiring.
Alternatively, the MIQ/CHV PLUS valve module can be installed in the
system. It combines the relay, valve and valve power supply in one MIQ
enclosure. Thus, no additional wiring is required, which makes
installation easier especially if the distance between the Universal
Transmitter and sensor is great.
Further system options If necessary, an additional power pack can be added to supply sensors
with high power consumption (e.g. UV/VIS sensor).