The QIRF refrigerant gas detectors are the second generation of QEL proprietary designed transmitter/sensors. They are configured easily to meet the International Mechanical Code, ASHRAE 15, and B52 requirements. These transmitters were engineered to address the deficiencies inherent with solid-state sensors. Infrared technology facilitates specific gas type refrigerant detection without any cross-sensitive interferences. Its sensing technology is a non-contact, non-depleting form of concentration measurement that has a sensor life of over ten years. Standard equipment includes a digital display, three user configurable relays, buzzer, horn/ strobe output and non-intrusive calibration. Sensor housings are thermally controlled at elevated temperatures to eliminate errors due to condensate formation and from temperature fluctuations allowing operation in temperatures from -45ºC to +65°C. Each unit can be connected to either the M-Controller or Q4C controller through RS-485 digital communication allowing for cost effective wiring installation. Equally the transmitter is available with 4-20 mA, and Modbus outputs to any Building Automation System (BAS). Controllers can be equipped with internal and external horns
and strobes to alert personnel prior to entering the hazardous area. Both the M-Controller and Q4C are available with M-Net and M-Logger which allows remote monitoring, notification, programming and datalogging features. NEMA 4X enclosures are standard. Calibration procedures are straight forward, non-proprietary and can be performed by any competent technician. Consult the factory for specific gases