• Class 1, Division 2 Rated for Sampling from a Class 1 Division 1 Area

• FM Listed for NFPA 820 Compliance

• Pumped or Air Aspirated Versions

• Flow Sensor with Relay that Fails Safe

• Internal Power Switch and Flow Adjust

• 24 VDC Power Source for Gas Detectors

• Fiberglass Wall-mount Enclosure

The Sensidyne Sample Draw System samples air from remote locations pulling a sample to gas detection transmitter(s) and is offered as a diaphragm pumped or an air operated aspirator unit. It is FM approved for placement in a Class I, Division 2 Hazardous (Classified) area to sample from a Class I, Division 1 Hazardous (Classified) area, Groups C and D. A Division 2 approval eliminates the need for flame arrestors and reduces related maintenance caused by dirt and moisture.

Flow rate is easily adjustable and a rotameter is provided for visual indication of flow. A fail-safe flow switch can de-actuate the relay and provide a signal on loss of flow or power. A two-way valve permits the application of calibration standards to the gas sensor(s) for routine preventative maintenance.

 

The Sample Draw System is housed in a wall-mount fiberglass enclosure and rated NEMA 3R. The system power supply is capable of operating the pump and multiple in-line transmitters, enabling up to four gas sensors placed downstream of the sample for monitoring different gases. This integral power source enhances capabilities for remote applications such as pumping stations, large laboratories, and gas hoods while significantly reducing installation costs.