Dwyer Series 3000MR & 3000MRS Photohelic Switch/Gages,
Using solid state technology, the Series 3000MR & 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 interrupte. Solid state design now results
in greatly reduced size and weight. Units can be flush mounte or surface mounte
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.

