3000MR Photohelic Switch/Gage

Dwyer, 3000MR-20CM, Series 3000MR Photohelic Switch/Gage, Electromechanical Relays, 0-20 cm w.c.Includesmounting ring, snap ring18" 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)(3) 6-32 x 5/16" RH machine screws (surface mounting)he Series 3000MR Photohelic® Switch/Gage 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" hole or surface mounted with hardware supplied. 3000MR models employ versatile electromechanical relays with gold over silver contacts - ideal for dry circuits. 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.ApplicationsFan ControlDamper ControlEnvironmental Pollution ControlApprovalsCE ApprovalGOST-R Certificate.