Ametek Thermox 2000 ATEX Series User Manual page 60

Figure 3-19.
Switch location.
Figure 3-19.
Sample schematic -
contact transfer.
3-36 | Thermox Series 2000 WDG-HPII / HPIIC - ATEX
Combustibles detector alarm connections
If you have the combustibles option, two sets of alarm relay contact are
available to activate for high combustibles levels, and are labeled as follows
(see Figure 3-18).
ALARM 5A
ALARM 5B
Loss of Pressurization - Alarm Contact
If pressure drops below 0.15" of water column ±0.02", contact will transfer
on the pressure switch (see Figure 3-19 and Figure 3-20).
ALARM SYSTEM
POWER SOURCE
ALARM 6A
ALARM 6B
COMMON
NORM
CLOSED
N.O.
N.C.
HORN OR BEACON
PRESSURE
SWITCH
NORM
OPEN
LOCAL ALARM