Dwyer 3000MR-0 Photohelic Differential Pressure Switch/Gauge.

About Dwyer 3000MR-0 Photohelic Differential Pressure Switch/Gauge.

Dwyer 3000MR-0 Photohelic Differential Pressure Switch/Gauge.

Pressure switch/gage, range 0-0.5" w.c., .01 minor divisions.

Model: 3000MR-0

Combine the functions of a precise, highly repeatable differential pressure switch with a large easy-to-read analog pressure gauge employing the durable, time-proven Magnehelic gauge design. Versatile electromechanical relays with gold over silver contacts - ideal for dry circuits. 

Dwyer 3000MR-0 Photohelic, Switch/Gauge 0 to 0.5 in W.C.

Using solid state technology, there Series 3000MR and 3000MRS Photohelic switch/gauges combine the functions of a precise, highly repeatable differential pressure switch with a large easy-to-read analog pressure gage employing the durable, time-proven Magnehelic gage design. Switch setting is easy to adjust with large external knobs on the gage face. Gage reading is unaffected by switch operation - will indicate accurately even if power is interrupted. Solid state design now results in greatly reduced size and weight. Units can be flush mounted in 4-13/16" (122 mm) hole or surface mounted with hardware supplied. 3000MR models employ versatile electromechanical relays with gold over silver contacts - ideal for dry circuits. For applications requiring high cycle rates, choose 3000MRS models with SPST (N.O.) solid state relays. All models provide both low and high limit control and include 18-inch (45 cm) cable assemblies for electrical connections.

Gage accuracy is ±2% of full scale and switch repeatability is ±1%. Switch deadband is one pointer width - less than 1% of full scale. Compatible with air and other non-combustible, non-corrosive gases, they can be used in systems with pressures to 25 psig (1.725 bar).

Range 0-0.5" W.C., .01 minor divisions 

Precision Pressure Monitoring with Photohelic Technology

The Dwyer 3000MR-0 offers accurate differential pressure monitoring with photohelic switching, suitable for steam, gas, or oil applications. Its analog display presents real-time readings while dual SPDT switches enable precise control. Engineered for industrial use, this device provides repeatable, dependable operation and instantaneous responses, essential for production environments where safety and accuracy are priorities.


Versatile Mounting and Durable Construction

Featuring panel, flush, or surface mount options, the 3000MR-0 adapts to various installation requirements. The housing is constructed from black anodized die-cast aluminum to withstand industrial settings, while the enclosure's NEMA 1 rating ensures safe indoor use. Accessories include a robust mounting bracket, hardware, and an instruction manual for straightforward setup.


Adjustable and User-Friendly Interface

Easily adjust set points with the front dials and fine-tune zero readings using the external adjustment screw. The device's user-centric design promotes efficient operation and on-site calibration. Its intuitive analog display and clear markings enhance visibility and usability, making it efficient for ongoing monitoring and control.