SENSIDYNE  820-0206-02-0249

Predictive Sensor End-of-Life Indication
Missing or Non-functional Sensor Indication
Sensor Test-On-Demand, with On-board Gas Generator

Shop Calibrate and Hot-swap Gas Sensors in Classified Areas
Mount Sensor up to 100 ft./30 m. Away Without Rigid Conduit

Auto-recognition and Set-up from Sensor Memory Provides
Operating Parameters and Diagnostics for All Plus Transmitters

Performance Tested and Certified to FM and ATEX Standards
Unrestricted Hazardous Classified Area Installation and Operation

2-Wire and 3-Wire Transmitters with Enclosure Options
Non-intrusive Configuration and Maintenance Interface
Remote Sensor / Gassing, Duct Mount and Sample Draw
Configurable Alarms: Fault Conditions and Test-on-Demand

Intelligent and dependable firmware monitors the intelligent Plus sensor for changes that could effect performance. Sensor condition and maintenance notifications are displayed locally and can be sent to a controller or facility monitoring system via on-board relays, a virtual relay (assignable to a fault current), RS-485 Modbus, or HART. This thorough monitoring provides increased reliability.

The SensAlert Plus Intrinsically Safe sensor head can be remote mounted up to 100 feet (30m) from the transmitter providing greater flexibility to position the transmitter in an personnel-accessible location while positioning the sensor closer to potential hazards. A wide range of sensors, accessories and remote gassing/sampling systems further simplify maintenance and provide installation flexibility.

Shop or field calibrate, then swap sensors under power to minimize maintenance and calibration time. A large backlit alphanumeric display with a non-intrusive user interface allows for configuration, setup, and data review without declassifying a hazardous area. SensAlert Plus is a universal transmitter allowing facility standardization across gas types, sensor technologies, and sensor ranges.

It is recommended that zero-air or zero-nitrogen be used to calibrate the zero on this sensor. It is important that the zero-gas be at the same temperature as the sensor, zeroing with the gas and sensor at different temperatures will significantly affect both the baseline value and sensor accuracy. Complete zeroing instructions are provided in the SensAlert Plus User Manual. A 3 to 5 minute pre-exposure is recommended prior to zeroing the sensor.

It is recommended that this sensor be calibrated at the full scale concentration of 50 %LEL C 2 H 2 . It is important that the span gas be at the same temperature as the sensor, calibrating with the gas and sensor at different temperatures will significantly affect the sensor accuracy. Complete span calibration instructions are provided in the SensAlert Plus User Manual.

NOTE: Due to the sensor C 2 H 2 IR absorption characteristics, it is highly recommended that the zero and span be calibrated one right after the other. Zeroing the sensor without a subsequent span calibration can affect the sensor accuracy.

There is no Test-On-Demand cell available for this sensor.