Asco Tripoint Heating Cooling Appliance Switch/Pressure Switch
Cat No.PB20A, AMB Temp 50 C
Switches for Vacuum through 6000 psig withAdjustable Set Points and Fixed or Adjustable Deadband
Features:
• Set point repeatability, +1% of operating range.• All wiring terminals, adjustments and visual scales are accessible from the front of the switch frame type, general purpose enclosure.• Compact size.• Mounts in any position.• Rugged and vibration resistant; e.g., for compressors.• Visual adjustment scales in psig and bars.• Wide selection of transducer wetted materials suitable for air, water, oil or corrosive fluids.•
Switch
P-Series pressure switch units incorporate the uniqueASCO TRI-POINT alternating fulcrum balance plate tocontrol the operation of one or more electrical snap-action swtiches. The electrical snap-action switch together with the adjusting mechanism is a fully-tested,self-contained subassembly.
Transducer
Transducer unit incorporates a diaphragm/piston type pressure sensor, and is also a fully-tested, self-contained subassembly.
Operation
When pressure is applied to the transducer it is converted into movement of the piston. This piston movement is then used to control the operation of the electrical snap-action switch in the switch unit
General Purpose–Type 1. These enclosures are designed for indoor use to protect personnel from accidental contact with the equipment. P-Series general purpose enclosures are painted, zinc-coated
See photos for more details
