The design of Series 3000MR and 3000MRS Photohelic® switch/gages incorporates the function of a precise, highly repeatable differential pressure switch with a large analog gauge for simplifying reading.
Adjustment of the switch setting is extremely simple by using the large external knobs on the gauge face which remains unaffected by the switching operation, thus providing an accurate reading even when there is a disruption in power.
With the solid state design, the overall size and weight of the unit is significantly reduced. Unit can be flush mounted in the 4-13/16" (122 mm) surface or hole mounted with supplied hardware. The 3000MR models come with a versatile electro mechanical relay with silver and gold contacts making them suitable for dry circuits.
Additionally all models offer high and low regulations including an 18-inch cable for electrical connections.