Model Summary
The document provides details on the PS series of mechanical differential pressure switches designed for air applications in HVAC/R systems. The models range from PS200 to PS4500, with measurement ranges from 20 Pa to 4500 Pa.

Product Description
The PS series offers a cost-effective solution for monitoring filters, fans, and ducts in building automation systems. These switches allow for field-selectable switching point adjustments and use Pa as the measurement unit.

Similar Products
Other related products include the DPI series electronic differential pressure switches and the DPT-R8 series 8-range differential pressure transmitters.

Applications
Common applications include fan, blower, and filter monitoring, as well as pressure and flow monitoring, and valve and damper monitoring.

Specifications
Performance
Accuracy varies by model, with typical accuracy at low limits ranging from ±5 Pa to ±50 Pa. The switching differential also varies, with values from 20 Pa to 250 Pa. The devices can withstand proof pressures up to 25 kPa and burst pressures up to 50 kPa.

Technical Specifications
The switches are compatible with dry air or non-aggressive gases and operate within a temperature range of -20 to 60 °C. They are housed in ABS cases with silicone membranes and have an IP54 protection standard.

Electrical Specifications
The input range is 24–250 VAC, with output options for NO/NC circuits. Electrical ratings vary by model, with resistive loads up to 3 A / 250 VAC.

Conformance
The products meet CE marking requirements and comply with RoHS, LVD, and WEEE directives. The company is certified by DNV GL for ISO 9001 and ISO 14001 standards.