Dwyer Instruments SERIES APS, SERIES AVS Data Sheet
SERIES APS/AVS | ADJUSTABLE PRESSURE SWITCH
®
FEATURES/BENEFITS
• Field adjustable with simple indicating pointer reduces installation time
bring application on-line faster
• Stainless steel construction provides a durable solution in harsh
environments
APPLICATIONS
• OEM
• Process equipment
• Compressors
• Pump control
• Motor control
DESCRIPTION
The SERIES APS/AVS Adjustable Pressure 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.
SPECIFICATIONS
Service Compatible liquids or gases.
Wetted Materials Capsule: 17-7 PH SS; Fitting: 303 SS.
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 VAC.
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.
DWYER INSTRUMENTS, INC.
®
2.590 MAX
[27.69]
1/8 NPT
Ø.750
L
DIMENSIONS WIRING DIAGRAM
.562 MAX
[14.27]
[65.79]
[19.05]
Ø1.090
HOW TO ORDER
Use the bold characters from the chart below to construct a product code.
-X -X
SERIES
APS - Adjustable pressure switch
AVS - Adjustable pressure switch for vacuum ranges
BLACK COMMON
WHITE NORMALLY OPEN
RED NORMALLY CLOSED
RANGE
150 - Decreasing: 0.8 to 28.5 psi (0.06 to 2.0 bar)
Increasing: 1.6 to 30.0 psi (0.11 to 2.1 bar) (APS only)
250 - Decreasing: 2.0 to 48.0 psi (0.14 to 3.3 bar)
Increasing: 3.0 to 50.0 psi (0.21 to 3.5 bar) (APS only)
350 - Decreasing: 3.0 to 96.5 psi (0.21 to 6.7 bar)
Increasing: 4.5 to 100 psi (0.31 to 6.9 bar) (APS only)
450 - Decreasing: 7.5 to 242 psi (0.52 to 16.7 bar)
Increasing: 9.7 to 250 psi (0.67 to 17.2 bar) (APS only)
550 - Decreasing: 15.0 to 485 psi (1.0 to 33.4 bar)
Increasing: 20.0 to 500 psi (1.4 to 34.5 bar) (APS only)
150 - Decreasing: 1.6 to 27.1 psi (4.1 to 68.6 bar)
Increasing: 2.7 to 28.2 psi (6.9 to 71.6 bar) (AVS only)
250 - Decreasing: 4.0 to 24.8 (10.2 to 63.0 bar)
Increasing: 5.1 to 28.2 psi (13.0 to 71.6 bar) (AVS only)
350 - Decreasing: 6.0 to 21.5 psi (15.2 to 54.6 bar)
Increasing: 8.4 to 28.2 psi (21.3 to 71.6 bar) (AVS only)
Important Notice: Dwyer Instruments, Inc. reserves the right to make changes to or discontinue any product or service identied in this publication without notice. Dwyer advises its customers to obtain the
latest version of the relevant information to verify, before placing any orders, that the information being relied upon is current.
DWYER INSTRUMENTS, INC.
DS-APS-AVS | 1/18
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