ENMET PID-Guard - Manual (Page 6)

PID-G UARD ENMET Corporation
4
2.3 Circuit Board Features
The Display Panel is attached by a cable and is released by unscrewing the 4 screws located in the corners. After releasing the
panel, it is swung upward, exposing the interior of the enclosure. The Circuit Board is mounted at the back surface of the
enclosure interior. Features are shown in Figure 2.
Feature Description
Relay Terminals This group of terminals is located on the Circuit Board.
For the contacts for each of three alarm relays, and for the contacts of a fault relay.
See Section 3.2.2
Output Terminals For the 4-20 mA output.
PCB/Sensor Manifold The PCB/Sensor manifold. The photoionization sensor located under this housing.
Figure 2: PID-G UARD Circuit Board Features
Relay Terminals
J14, J15, J16, J17
PCB/Sensor Manifold
Relays
K1, K2, K3, K4
Terminal J12
External Power
4-20mA Output