PureAire Monitoring Systems, Inc.
10/25/07
14
4.6 Alarm Reset
If the instrument is equipped with the Alarm Relays option and one or more
alarms are configured for latching operation (see Appendix), alarm conditions
must be acknowledged by manually resetting the alarm. This manual alarm reset
may be performed remotely via a control room signal or locally by holding the
magnet at about the 7 o’clock position on the base of the cover assembly.
4.7 Loss of Power Indication
In the event the
Air Check
✓
EX
loses VDC power, the local display go blank
and the 4-20 mA analog output signal will drop to 0. If the instrument is
configured with the optional Fault Alarm Relay, that relay will de-energize.
On units equipped with the
Alarm Relays option, alarm
conditions are reset /
acknowledged by holding the
magnet at the base of the
cover assembly at about the
7 o’clock position.
