Sentinel CX
Sentinel CX Sensor Station IM Rev. 1.2 Page 2 of 2
SmartWireless® CXT Controller
The Detcon SmartWireless® CXT controller is a multi-channel mobile gas detection control system
mounted on a tripod or a suitable stand. The CXT can be utilized as a self-contained gas detection,
display/alarm system package or wirelessly connected to the main network. The CXT is equipped with an
auto configure system to automatically search for Detcon equipment associated with the controller.
SmartWireless® CX Sensor Station
The SmartWireless® CX Sensor Station is an accessory to the SmartWireless® CXT. The CX wirelessly
transmits the data from up to 4 wired sensors back to the CXT and includes a battery that powers the radio,
alarm devices, and the attached sensors.
Alarm Stations
Alarm stations can be used as part of the gas detection system. Class I Division I and Class I Division II
alarm stations are available. The stations are battery powered and controlled wirelessly by the CXT. The
strobe and horn installed on the CX are activated by the CXT when the alarms levels are reached.
Alarm options are as follows:
1. Integral audio visual mounted on the CX (Class 1; Division 2 only)
2. Standalone audio visual alarm station (Class 1; Division 2)
3. Standalone audio visual alarm station (Class 1; Division 1)
Gas Detection Sensors
Gas sensors with a 4-20mA output can be connected directly to the CX. The Model CX sensors from
Detcon are designed specifically to work with the SmartWireless® CX.
1.2 Optional Components
Options for the SmartWireless® CX are as follows:
strobe
horn
external ‘Wet’ or ‘Dry’ alarm port
1.3 Alarms and Fault Condition
The CX includes an optional strobe and/or a piezoelectric horn and an external alarm connector. The strobe
is associated with Alarm 1, the horn is associated with Alarm2 and the external alarm connector utilizes all
alarm outputs (alarm 1, 2, 3 and fault) for connection to external alarm devices. The external alarm outputs
can be used to control annunciating devices or as signal inputs to other control devices. The CX permits
alarm and fault conditions to cause an assigned relay to fire, triggering external alarm devices. When the
alarm level is reached either the devices mounted to the box or attached to the external alarm connector are
activated, or both. The assigned relay outputs will return to normal state when a gas alarm or a fault
condition clears. The Alarm Relay Output can be either ‘Wet’ or ‘Dry’ determined when the unit is
ordered. The ‘Wet output connector provides 12V outputs for external alarms. The ‘Dry’ output connector
provides dry contacts for external power to control external alarms.
All alarms can be configured as Energized/De-Energized, Latching/Non-Latching and Silenceable/Non-
Silenceable for the relays. This setup must be performed at the controller, refer to the controller manual for
more information.
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