Det-Tronics MOS H2S Gas Sensor User Manual

Page 14

95-8532

1.4

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