Dwyer AFS Series Piston Adjustable Flow Switch

Wiratama Mitra Abadi 01 02.27 flow measurement,

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.

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.