AirSense Model 310e Operator’s Manual
Optional High Limit Contact
The high CO
2
limit option provides a dry (i.e. unpowered)
contact closure that activates when the detected
concentration rises above the high CO
2
limit. The high limit
is adjustable from 0 to full scale of the unit
Setting High Limit Contact Polarity
The polarity of the high limit contact is set with jumper JP5
as shown in the table below.
Jumper JP5 Relay Operation
OPEN normally closed
opens above setpoint
CLOSED
(factory default)
normally open
closes above setpoint
To open jumper JP5 remove the shorting block from the two
pins, and replace it so that it engages only a single pin of the
jumper. The shorting block should not be removed; it is
required during the calibration procedure.
3/9/15 Digital Control Systems Page: 12
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