Diaphragm Switch - BM45FH Series
The BM45 Series Diaphragm Switch is designed for use with freeflowing,
dry granular or pelleted material being stored in bins, silos or hoppers. Mounted inside or outside of the bin, the diaphragm switch – also called a pressure switch – can be used for detecting high, intermediate or low levels
of material. The device is connected to a light, horn or point level alarm panel and activates an alert when material comes into contact with, or falls away from, the diaphragm switch.
BM45FH Heavy Duty Diaphragm Switch
The BM45 series is a general purpose, economical indicator designed for non-hazardous applications. The BM65 is designed for hazardous applicaitons.
- Aggregates - Alumina - Bark, Ground - Barley, Ground - Barley, Whole Bentonite - Carbon Black - Cement Clinker - Cement, Portland - Coal - Foundry Sand - Corn - Shelled - Diatomaceous Earth - Dry Ash - Flour - Fly Ash - Gravel - Kaolin Clay - Lime, Hydrated - Limestone - Oats - Peanuts, in Shell - Peanuts, Shelled - Polyethylene Powder - Polyethylene Resin - Polyethylene Beads - Potash - PVC Powder - PVC Resin - Rice - Rye - Salt - Sand - Dry - Sand, Silica - Sawdust - Sesame Seed - Soybeans - Cracked - Soybean Meal - Soybean - Whole - Sugar Beets, Whole - Sunflower Seed Wheat - Wood Chips - Wood Dust - Wood Pellets
BM45 and BM65 models using the heavy duty neoprene, neoprene with nylon mesh and silicone diaphragms have a thicker .031” diaphragm and a snap-action switch which is less sensitive than the standard switch. These units are intended for use with heavier materials and low level installation within the bin. The silicone diaphragm is designed to remain more resilient and sensitive in extreme temperature conditions.
- Neoprene — is a type of synthetic rubber. Neoprene has a variety of properties that make it quite useful, including being abrasion-resistant, chemical-resistant, waterproof, stretchable and buoyant.
- Silicone Rubber — offers the best long term resistance to environmental extremes. The chemical, electrical, and mechanical properties of silicones remain virtually unchanged at temperatures from -160º to 500º F.
- Neoprene with Nylon Mesh — has outstanding resistance to most chemicals, heat, and oils. Further, it is flame resistant, offers excellent color stability, weather resilience and extremely high abrasion resistance. Low moisture absorption and good dielectric qualities are among its other features.