Dwyer AFS Series Piston Adjustable Flow Switch

Dwyer AFS Series Adjustable Flow Switches are externally adjustable piston-type flow switches for oils, liquids, and gases. This Series offers an infinite number of flow settings from 0.5 to 20 GPM.

Dwyer AFS Series Piston Adjustable Flow Switch

Shuttle or piston flow switches are sensors with an electrical contact output at a specific flow rate. Models are used with oil, air, water, and gases. Applications include oil flow control, low flow detection in cooling lines, and high-pressure lubrication systems. Rugged construction and excellent chemical compatibility simplify flow/no flow detection.

Dwyer AFS Series Features

• Externally adjustable flow set point
• Offers a number of flow settings at pressures up to 1000 psig, with low-pressure drop and precise repeatability
  
  

Application

• Protecting machine tools from coolant flow failure
• Protecting bearings from loss of lubricant
• Assuring proper air flow
• Water or compatible liquid control
• Oil flow control
• Control of gas flows

Dwyer AFS Series Specification

Service	Compatible gases or liquids.
Wetted Materials	Housing and Piston: See model chart; Spring: 316SS; O-ring: Fluoroelastomer; Other: Epoxy.
Temperature Limits	-20 to 300°F (-29 to 149°C), -20 to 225°F (-29 to 107.2°C) with polysulfone piston.
Pressure Limit	1000 psi (68 bar).
Accuracy	±10% of setpoint.
Repeatability	±1% maximum deviation.
Switch Type	SPDT.
Electrical Rating	17 A @ 120 VAC, .08 A @ 240 VAC, .13 A @ 120 VDC, .06 A @ 240 VDC.
Electrical Connections	18 AWG, 24" (61 cm), polymeric lead wires, optional 1/2" male NPT conduit connection.
Process Connection	1/2" female NPT ports.
Mounting Orientation	Any.
Setpoint Adjustment	Liquids: 0.5 to 20 GPM (1.9 to 75.7 LPM); Gases: 1.0 to 75 SCFM (28 to 2124 LPM) at 5 psig.
Required Filtration	50 microns or better.
Weight	2 lb, 11 oz (1.22 kg).
Agency Approval	CE.

Download Data Sheet: Series AFS Piston Adjustable Flow Switch

Ref: dwyer-inst.com