DWYER – Series APS/AVS Adjustable Pressure Switch

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Description

Series APS/AVS Adjustable Pressure Switch

Vacuum and Pressure Ranges, 5 A Switch, Compact Size

Miniature Series APS/AVS Adjustable Switches offer reliable switching for pressure/vacuum alarm, shutdown or control. The units are readily adjustable throughout their range using the locking adjusting ring and indicating pointer. The body is constructed of stainless steel for durability in harsh environments. Switches include 12″ (30 cm) wire leads sealed with epoxy for additional protection.

Product Applications

  • OEM
  • Compressors
  • Motor control
  • Process equipment
  • Pump control

 

Features

  • Field adjustable with simple indicating pointer reduces installation time bringing application on-line faster
  • Stainless steel construction provides a durable solution in harsh environments

 

Specifications

  • Service: Compatible liquids or gases.
  • Wetted Materials: Capsule: 17-7 PH SS; Fitting: 303 stainless steel.
  • Temperature Limits: -65 to 225°F (-54 to 107°C), a set point change of up to 2% when used below -10°F (-23°C) or above 125°F (52°C).
  • Pressure/Vacuum Limits: 150% of range.
  • Switch Type: SPDT snap action.
  • Electrical Ratings: 5 A @ 250 VAC, 3 A @ 28 VDC.
  • Electrical Connections: 3-wire, 20 AWG insulated with PVC, 12″ (30 cm) length.
  • Process Connection: 1/8″ male NPT.
  • Set Point: Field adjustable.
  • Cycling: Not to exceed 20 CPM.
  • Sensor Element: Capsule.
  • Weight: 3 oz (85 g).
  • Agency Approvals: UR.

 

Models & Ordering

Pressure

Model Description
APS-150 Adjustable pressure switch, set point range 0.8-28.5 psi (.06-2.0 bar) increasing, 1.6-30.0 psi (.11-2.1 bar) decreasing, ±0.6 psi (.04 bar) repeatability, 0.8-1.3 psi (.06-.09 bar) deadband.
APS-250 Adjustable pressure switch, set point range 2.0-48.0 psi (.14-3.3 bar) increasing, 3.0-50.0 psi (.21-3.5 bar) decreasing, ±1.0 psi (0.7 bar) repeatability, 1-1.7 psi (.07-.12 bar) deadband.
APS-350 Adjustable pressure switch, set point range 3.0-96.5 psi (.21-6.7 bar) increasing, 4.5-100 psi (.31-6.9 bar) decreasing, ±2.0 psi (.14 bar) repeatability, 1.6-4 psi (.11-.28 bar) deadband.
APS-450 Adjustable pressure switch, set point range 7.5-242 psi (.52-16.7 bar) increasing, 9.7-250 psi (.67-17.2 bar) decreasing, ±5.0 psi (.35 bar) repeatability, 2.5-9 psi (.17-.62 bar) deadband.
APS-550 Adjustable pressure switch, set point range 15.0-485 psi (1.0-33.4 bar) increasing, 20.0-500 psi (1.4-34.5 bar) decreasing, ±10.0 psi (.69 bar) repeatability, 5-22 psi (.35-1.5 bar) deadband.

 

Vacuum

Model Description
AVS-150 Adjustable pressure switch, set point range 1.6-27.1″ Hg (4.1-68.6 cm Hg) increasing, 2.7-28.2″ Hg (6.9-71.6 cm Hg) decreasing, ±1.2″ Hg (3.1 cm Hg) repeatability, 1.3-2.7″ Hg (3.3-6.9 cm Hg) deadband.
AVS-350 Adjustable pressure switch, set point range 6.0-21.5″ Hg (15.2-54.6 cm Hg) increasing, 8.4-28.2″ Hg (21.3-71.6 cm Hg) decreasing, ±4.0″ Hg (10.2 cm Hg) repeatability, 2.6-7.3″ Hg (6.6-18.5 cm Hg) deadband.

 

 

 

 

 

Additional information

Model

APS-150, APS-250, APS-350, APS-450, APS-550, AVS-150, AVS-350

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