DS Air Relay switches have been designed for the zone 0 applications requiring multiple set points, but with only one or two process connections. Typical applications are for alarm and trip functions. Some other are to keep pressure between two limits HI and LO, with independent signals. Other applications are for HI and HI-HI limits or LO and LO-LO limits in the same pressure switch.
Typical application areas are in hazardous & nonhazrdous locations like power sector, pharma, oil and gas, petrochemical, chemical & other industries.
Oil & Gas
Bulk Drug & Pharma
Boiler & Compressors
Burners and Furnaces
Glass and Metal Industries
Natural Gas, LPG storage and transportation
Storage temperature : Atmospheric temperature
Media Temp.:- for rubber diaphragms 80 degree C max., higher with metal diaphragms
Enclosure : Die cast aluminium to IP 66
Switch output : Pneumatic
Process connection : 1⁄4 “BSP standard.
Wide Scale for easier setpoint (optional)
Enclosure Protection : IP 66 Standard
Customised arrangements for switching values on request