Differential Pressure Switch

Model: PRSMD

Easy installation and no power supply needed
Easily set the differential pressure switch values on the site
Limited to non-flammable and non-corrosive gases
Usually used in filter, fan, and duct pressure monitoring in building automation systems in the HVAC

Responsive after-sales service / Customizable
High quality / One-year warranty
Product images are for reference only. Final specifications are based on the confirmed order.

Description

The PRSMD is a versatile differential pressure switch designed for easy installation and on-site setpoint adjustment without requiring external power. Specifically engineered for non-flammable and non-corrosive gases, it is a standard component in HVAC and building automation systems for monitoring filters, fans, and air ducts. Offering measuring ranges from 20 to 5000 Pa with ±2% F.S. accuracy, the unit features a durable silicone diaphragm, PC housing, and IP54-rated protection, with a service life exceeding one million cycles. The integrated SPDT contact supports loads up to 1.5 A @ 250 VAC or 1 A @ 30 VDC, ensuring reliable control performance for diverse industrial applications.

Specifications

Electrical connections	Screw terminal
Scale ranges	20 ... 200 Pa, 30 ... 300 Pa, 40 ... 400 Pa, 50 ... 500 Pa, 100 ... 1000 Pa, 200 ... 1000 Pa, 500 ... 2500 Pa, 1000 ... 5000 Pa
Accuracy	±2% F.S.
Process connection	6.0 mm pipe; P1 high pressure port, P2 low pressure port
Material	Main body: PC; cover: PC; diaphragm: silicone; contact: Silver
Accessories	Equipped with a set of standard pressure connection components, including a 1.5 m transparent plastic hose, 2 plastic connectors, and 4 self-tapping screws.
Ambient temperature	-40℃ ... 85℃
Medium temperature	-20℃ ... 85℃
Contact type	SPDT AC type max.: 1.5 A/250 VAC DC type max.: 1 A/30 VDC
Maximum switching frequency	6 times/minute
Pressure media	air, non-flammable gases, and non-aggressive gases
Max	operating pressure: 10 kPa
Service life	Switch more than 106 times
Protection level	IP 54
Weight	With mounting bracket: 140 g Without mounting bracket: 90 g