12.3
SiteSentinel® iSite™ Smart Module
The Smart Module gathers probe and sensor data. Up to four devices
can be connected to the Intrinsically Safe (I.S.) barrier in the Smart
Module. The barrier isolates the module from hazardous areas where
probes and sensors are installed. Up to four (4) barriers can be in
each module, a total of 16 devices per module. Up to eight modules
can be connected to the console via Petro-Net™ (twisted-pair) wiring,
for a total of 128 devices per system. Conduit is recommended for the
Petro-Net™ wiring between the Smart Module and the console, but it
is not required.
The standard Smart Module includes one I.S. barrier. The part
number for additional I.S. barriers is 20-4343.
Figure 12-3 SiteSentinel® iSite™ Smart Module Connections
18-AWG, twisted pair, oil-and-gas
resistant (TFFN, THHN or THWN)