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PRESSURE SWITCHES. UMER AFZAL 2007-CHEM-24. SYNOPSIS. Introduction Categories/Kinds of Pressure Switches Purpose Built Pressure Switches References. INTRODUCTION. Definition Working Principle Construction. CATEGORIES/KINDS OF PRESSURE SWITCHES.

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pressure switches

PRESSURE SWITCHES

UMER AFZAL

2007-CHEM-24

synopsis
SYNOPSIS
  • Introduction
  • Categories/Kinds of Pressure Switches
  • Purpose Built Pressure Switches
  • References
introduction
INTRODUCTION
  • Definition
  • Working Principle
  • Construction
categories kinds of pressure switches
CATEGORIES/KINDS OF PRESSURE SWITCHES
  • Manual vs. Automatic Pressure Switches
  • Hydraulic and Pneumatic Pressure Switches
  • Purpose Built Pressure Switches
  • Air Compressor Pressure Switches
  • Water Pump Pressure Switches
  • Vacuum Switches
  • Differential Pressure Switches
  • Extended Duty Pressure Switches
  • Extended Duty Vacuum Switches
air compressor pressure switches
Air Compressor Pressure Switches
  • can be used for a pressure systems of 1-16 bar.

TYPES:

  • Square D Air Compressor Pressure Switch
  • Air Pressure Switch for Single Stage Air Compressor
  • Air Pressure Switch for Dual Stage Air Compressor
  • Furnas Pressure Switch
  • Siemens-Furnace Pressure Switch
  • and many more
water pump pressure switches
Water Pump Pressure Switches
  • used for the pressure ranges of 15-250 psi.
  • Cut-in and Cut-out Pressure
  • Limitations of Water Pump Pressure Switches
vacuum switches
Vacuum Switches
  • used for vacuum applications ranging from 1.1-22 inHg.
  • Applications

Internal combustion engine (20 in. vacuum)

Vacuum motors

HVAC controls

differential pressure switches
Differential Pressure Switches
  • 0.5 to 6 bar
  • mostly used in the power plants
extended duty pressure switches
Extended Duty Pressure Switches
  • 0.5 to 150 psi

Switch with Metri-pack terminal

Switch with screw terminals

extended duty vacuum switches
Extended Duty Vacuum Switches
  • Fluorosiliconerubber diaphragm
  • About 1.1 to 22 inHg

Vacuum switch with screw terminals

references
REFERENCES
  • Singh S.K., “Industrial Instrumentation and Control”, Tata McGraw Hill Publishing Company Limited New Delhi, Edition Ist, Chapter 12, Page 393-394.
  • MAMCO Precision Switches 147 River Street Oneonta, NY 13820
  • Lefoo Industrial Company Limited China
  • Solon Manufacturing Company
  • Hobbs Corporation, Springfield Illinois, USA