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39
Gas Concentration Control
WARNING
Failure to insert a circuit protection diode, shown as above,
will result in damage to the monitor if a voltage spike is
created by the relay.
Wiring the 0-5 V analogue output (wire between
Pins 2 & 6)
The 0 to 5 V signal is a proportional signal based on the
concentration of gas. The voltage out spans the specified gas
sensor concentration range, for example: with the low
concentration ozone sensor head: 0 V represents 0 ppm
Ozone and 5 V represents 0.500 ppm Ozone.
Note:
See “Diagnostic Features” on page 42 for output status
conditions.
1
2
3
4
5
6
RJ12
12V COIL
MINIATURE RELAY
CONTROL CIRCUIT
+12V Nom. -from Plugpack
150mA max