Dwyer Instruments SERIES A1F Data Sheet

SERIES A1F | MERCOID® LOW COST OEM PRESSURE SWITCH

A1F

A1F with -PC weatherproof housing

FEATURES/BENEFITS

• 15 A contact allows direct control reducing costs and reliability by having to introduce additional contacts and relays

• Case style allows use for panel mounting application with optional weather-proof enclosure for use in outdoor environments

• Field adjustable reduces installation time bring application on-line faster

• Wetted material provides support for wider range of process media

DESCRIPTIONAPPLICATIONS

• OEM

• Compressors

• Motor control

• Process equipment

• Pump control

Low cost and precision made, the Series A1F Low Cost OEM Pressure Switch is ideal for OEM industrial applications. Wetted materials of

316 SS and uorocarbon ensure great chemical compatibility with a wide range of process media. The open case style is perfect for panel mounting applications like pump skids. Weatherproof enclosure is available in polycarbonate offering a low cost weatherproof switch.

Superior 15 A contact allows direct control of motors or pumps without

the use of external relays, a true cost savings.

SPECIFICATIONS

Service Compatible liquids and gases.

Wetted Materials Pressure chamber: 316 SS; Diaphragm: Fluorocarbon.

Temperature Limit -40 to 175°F (-40 to 80°C).

Pressure Limits 500 psig (34 bar).

Enclosure Rating No rating for open construction. Optional -PC enclosure meets NEMA 4X standards.

Switch Type SPDT snap switch.

Electrical Rating 15 A @ 120/240/480 VAC, 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC.

Electrical Connection Screw terminals.

Process Connection 1/4˝ female NPT and 1/2˝ male NPT.

Mounting Orientation Within 20° of vertical. Set Point Adjustment Knurled screw cap with indicating scale.

Deadband Fixed, see products on Order page for minimum and maximum deadband.

Weight 10.5 oz (297 g).

Agency Approvals CE, cUL, UL.

DIMENSIONS

INSULATIVE BARRIER

[3] ELECTRICAL

GROUND

[FEMALE CONNECTION]

[95.25]

[138.1

4-11/16 [119.06]

3-3/4

ø1-53/64

[ø46.43]

SET POINT ADJUSTMENT CAP

1/2 NPT [MALE CONNECTION]

1/4 NPT

[OPEN ON TOP]

SPDT SNAP

SWITCH

TERMINALS

1-7/16 [36.51]

SCREW

A1F A1F with -PC weatherproof housing

HOW TO ORDER

Use the bold characters from the chart below to construct a product code.

A1F -O -1-SS -STW-1

SERIES

A1F: Low cost OEM pressure switch

HOUSING ENCLOSURE

-O: Open

-PC: Polycarbonate with conduit entry

PRESSURE CHAMBER MATERIAL

-SS: 316 stainless steel

5-7/16

1-29/32

[48.41]

1-1/2

[38.10]

[101.6]

1-17/32

[38.89]

3-1/16 [77.79]

OPTIONS

-PRESET: Preset

-STW: Stainless steel tag wired

RANGE

-1: 2 to 15 psig (0.14 to 1.03 bar)

-2: 4 to 75 psig (0.28 to 5.17 bar)

-3: 8 to 225 psig (0.55 to 15.5 bar)

-4: 16 to 450 psig (1.1 to 31.0 bar)

SWITCH

-1: One SPDT switch

DWYER INSTRUMENTS, INC.

Important Notice: Dwyer Instruments, Inc. reserves the right to make changes to or discontinue any product or service identied 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.