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.
Product applications:Fan Control
Environmental Pollution Control
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)
Optional construction is available for use to either 35 psig (2.42 bar) or 80 psig (5.51 bar).