Sentry Gas Detection System --Sentry Sensors

Full range of sensors for combustible gas, oxygen deficiency and toxic gases.

Catalytic bead, infrared and electrochemical sensor technology for proven reliability and high accuracy.

Diagnostic information displayed on controller's alphanumeric display.

Power up and calibration output delay to avoid erroneous readings during warm-up and after calibration.

Automatic, post-calibration, low sensitivity check of the sensor for proper output.

There are no manual adjustments required at the sensor module, the controller automatically makes all necessary adjustments after the calibration gas is removed.

RFI and EMI immunity over extended distances.

One-person, Non-Intrusive Calibration for ease of use. In the calibration mode, sensors continue to monitor for hazardous conditions until calibration gas is applied. All adjustments are made automatically after calibration gas has been removed. Sentry notifies the operator of calibration completion and allows acceptance or rejection of the calibration at the controller keypad.

Digital signal transmission between the sensor and controller enabling multiplexing sensor modules on a single cable, significantly reducing installation cost.

In addition, with the Analog Input Module, other sensors and devices can be interfaced to the Sentry system. The Analog Input Module accepts digital or 4-20 mA input signals and converts the signal to the Sentry digital protocol.