SenTech IR-SNIF-1,2,3 provides compliance with ASHRAE Standard 15. It is based on an infrared technology that can detect multiple refrigerant types at concentration levels as low as 10 ppm. It detects all halogen-based refrigerants, and the refrigerant type can be field-changed without recalibration. Other features include a continuous digital display of system status; analog output for remote monitoring; system malfunction detection and indication; and visual alarm indication.
Models are available to accommodate sampling points located up to 250’ (76 m) from the unit. It has a fresh air inlet for automatic re-zeroing, and individually adjusted alarm points can be set for each gas type being monitored. Options and accessories include a strobe light, horn or strobe/horn combination as well as zone pickup tubing.