YSI DIQ/S 182-PR System 182 - Manual (Page 58)

Installation System 182
3 - 44 ba76024e01 02/2012
3.11.2 Connecting two sensors with compressed air cleaning
Connection scheme of
valve control
Example:
Relay 1 controls the cleaning of sensor 1.
Relay 2 controls the cleaning of sensor 2.
Variant: Relay 1 controls the cleaning of both sensors. Cleaning of both
sensors is carried out with the same settings.
Warning
In this configuration, the free switching contact (here: R3) may be
used to switch SELV voltages only.
Warning
No free wires must be allowed to project into the enclosure.
Otherwise, there is a danger that areas safe to contact could come
into contact with dangerous voltages. Always cut off any wires
that are not in use as closely as possible to the cable gland.
DIQ/CHV 1
SACIQ SACIQ
Valve control line 1
Valve control line 2
Air Air
DIQ/CHV 2
Sensor 2 Sensor 1
Max. total cable length
SNCIQ(/UG) and SACIQ = 250 m
DIQ/S 182-PR(/24V)
M C S
ESC
OK