Series 3000MR/3000MRS Photohelic Switch Gage

About Series 3000MR/3000MRS Photohelic Switch Gage

Using solid state technology, the SERIES 3000MR AND 3000MRS Photohelic® Switch/Gages 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 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.

Compatible with air and other non-combustible, non-corrosive gases, they can be used in systems with pressures to 25 psig (1.725 bar). Optional construction is available for use to either 35 psig (2.42 bar) or 80 psig (5.51 bar).

Included Accessories: mounting ring, snap ring; 18" (45 cm) cable assembly; (2) 3/16" tubing to 1/8" NPT adapters; (2) 1/8" NPT pipe plugs; (4) 6-32 x 1-1/4" RH machine screws (panel mounting); and (3) 6-32 x 5/16" RH machine screws (surface mounting).

Please see SERIES AT23000MR/MRS for ATEX approved.

Product Applications

Pneumatic Conveying
Air Conditioning Systems
Clean Rooms

Model	Description
3000MR-0	Pressure switch/gage, range 0-0.5" w.c., .01 minor divisions.
3001MR	Pressure switch/gage, range 0-1" w.c., .02 minor divisions.
3002MR	Pressure switch/gage, range 0-2" w.c., .05 minor divisions.
3003MR	Pressure switch/gage, range 0-3" w.c., .10 minor divisions.
3005MR	Pressure switch/gage, range 0-5" w.c., .10 minor divisions.
3010MR	Pressure switch/gage, range 0-10" w.c., .20 minor divisions.
3015MR	Pressure switch/gage, range 0-15" w.c., .50 minor divisions.
3020MR	Pressure switch/gage, range 0-20" w.c., .50 minor divisions.
3030MR	Pressure switch/gage, range 0-30" w.c., 1.0 minor divisions.
3050MR	Pressure switch/gage, range 0-50" w.c., 1.0 minor divisions.
3100MR	Pressure switch/gage, range 0-100" w.c., 2.0 minor divisions.

Versatile Differential Pressure Monitoring

Built for flexibility, the Series 3000MR/3000MRS accurately measures differential pressure of air and non-combustible gases. Its analog display with dual set points allows real-time system monitoring and reliable process automation. Adjustments to zero and set points are user-friendly, ensuring precise control in various industrial environments.


Rugged Industrial Construction

Engineered with a die-cast aluminum case, polycarbonate lens, and optional NEMA 4X (IP66) enclosure, this photohelic switch gage withstands tough environments. Its robust design supports both flush and surface mounting for installation versatility, while a balanced aluminum pointer ensures accuracy. The industrial-grade finish adds durability and professional appearance.


Reliable Switching and Safety

The integrated SPDT relays provide two independent switch outputs for control applications, rated for both AC and DC loads. External zero adjustment and front-accessible set point knobs allow for hassle-free calibration and maintenance. With a 2% accuracy of full scale, users benefit from trustworthy operation and rapid response in mission-critical settings.