Det-Tronics MOS H2S Gas Sensor - Manual (Page 14)

95-8532 1.4 12
Output
4 to 20 Milliamperes (Standard)
Relay (Optional)
• Option includes a set of four relays:
– High Alarm
– Low Alarm
– Auxiliary Alarm
– Fault
• Includes 4 to 20 ma output.
Description
• The linear 4 to 20 ma output:
– corresponds to the field-programmed gas range.
– can be calibrated in the field for maximum accuracy.
– is user selectable for isolated or non-isolated use.
Refer to the “Setup ” section for programming information.
• The High, Low and Auxiliary Alarm relays are
programmable as a group for either normally energized
or normally de-energized operation.
• High Alarm relay is always set for latching operation.
• Low Alarm and Auxiliary Alarm relays are programmable
as a group for either latching or non-latching operation.
• Fault relay is normally energized with no faults. Faults
are generally non-latching, but faults that occur during
calibration and warmup must be reset.
• Latching relays are reset using either the Cal magnet or
an external reset switch (field installed, user supplied).
Table 3—Infiniti Outputs