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A series - 8 Pages

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A series

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A-Series Miniature Watertight Pressure Switches Ashcroft® A-Series miniature pressure switches are designed for tough applications where conventional pressure switch designs often don’t measure up. A rugged all 316 SS IP67 enclosure gives uncompromising protection over a wide temperature range for the most demanding applications. FEATURES: • Compact size • 316 stainless steel construction • Pressure ranges from vacuum to 7500 psi • Field adjustable setpoint or factory set only • Wide operating temperature range (-40°C to 100°C) • Precision snap-acting micro switch element • SPDT or DPDT switching • UL, CSA listed models • CRN models available • CE and ROHS compliant LOOK FOR THESE MARKS ON OUR PRODUCTS BULLETIN SW-AWT All specifications are subject to change without notice. All sales subject to standard terms and conditions. © Ashcroft Inc. 04/2012 Ashcroft Inc., 250 East Main Street, Stratford, CT 06614 USA Tel: 203-378-8281 • Fax: 203-385-0408 email: info@ashcroft.com • www.ashcroft.com

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Applications include: Offshore oil rigs A rugged 316 SS enclosure gives uncompro- -where stainless steel construction and small size is desirable. mising protection. Materials of construction have been selected for long life. Precision snap acting Chemical and petrochemical plants -where small size and corrosion resistance construction is important. Pulp and paper mills micro switches are featured and fully encased to prevent moisture from corroding switch contacts. The switch, depending on range, is either an -where corrosion resistance and sealed contacts extend life. Special equipment...

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A-Series Miniature Watertight Pressure Switches SELECTION GUIDE Before selecting a switch model the following should be considered: Actuator: The actuator responds to changes in pressure and operates the micro switch element in response to these changes. The actuator is normally exposed to the process media and must be chemically compatible with it. There are three types of actuators available for the A-Series switches – all welded 316 SS diaphragm sealed piston; 316 SS piston with Viton O-ring seal; and 316 SS piston with Buna-N O-ring seal. The 316 SS diaphragm is available in ranges from...

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AVAILABLE PRESSURE  CONNECTIONS AVAILABLE  ELECTRICAL  CONNECTIONS 1/8 or1/4 MALE NPT 1/8 or1/4 FEMALE NPT 1/2 NPT CONDUIT CONNECTOR WITH 18 AWG WIRE LEADS VCR or VCO SPADE TERMINAL 4-0.187 MALE TERMINALS 7/16 ˝-20 SAE HIRSCHMANN MICRO-DIN CONNECTOR 43650 FORM C 3/4 ˝, 1.5˝ or 2.0˝ SANITARY ᕤ 18 AWG WIRE LEADS DPDT 18 AWG LEADS

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6 – PRESSURE CONNECTION 1 – FUNCTION Code APS – Pressure switch, single setpoint, fixed deadband, factory set, not field adjustable APA – Pressure switch, single setpoint, fixed deadband, field adjustable Description 1 ⁄8 NPT Male 1 ⁄4 NPT Male 1 ⁄8 NPT Female* 1 ⁄4 NPT Female* 7 ⁄16-20 SAE Male VCR Fixed* VCO Fixed* 0.75˝ Tri-Clamp® connection (includes 3A Approval)† 1.5˝ Tri-Clover® connection (includes 3A Approval)† 2.0˝ Tri-Clover® connection (includes 3A Approval)† 01 02 03 25 05 06 07 75 2 – ENCLOSURE (BODY) N4 – Watertight 316 SS body 3 – MICRO SWITCH, FIRST CHARACTER Code 15 1...

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A-Series Miniature Watertight Pressure Switches ADDITIONAL SWITCH TERMINOLOGY Accuracy – (See repeatability) Accuracy normally refers to conformity of an indicated value to an accepted standard value. There is no indication in switch products; thus, instead, the term repeatability is used as the key performance measure. Ashcroft A-Series switch accuracy is 2% of nominal range. Automatic Reset Switch – Switch which returns to normal state when actuating variable Pressure is reduced. Adjustable or Operating Range – That part of the nominal range over which the switch setpoint may be adjusted....

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1.37 .59 DIMENSIONS: FUNCTION CODE Description .60 .34 1.07 Dim. A APS (Factory Set) APA (Field Adjustable) MATING CONNECTOR 1.06 1.64 .41 NC NC NO NO MICRO SWITCH Description Dim. B 1H, 2H, 1L, 2L 1P, 2P, 1G, 2G 1.03 0.90 MICRO DIN (000H) NO CONN. GROUND (001H) WITH CONN.C PRESSURE CONNECTION GENERAL DIMENSION 1.37 1 /2 NPT CONDUIT Code Description Dim. C 1/8 NPT Male 1/4 NPT Male 1/8 NPT Female 0.45 0.56 0.75 0.41 0.54 0.65 04 05 06 07 15 20 75 1/4 NPT Female 7/16-20SAE VCR Fixed Male VCO Fixed Male 1.5˝ Tri-Clamp Seal 2.0˝ Tri-Clamp Seal 3/4˝ Fractional Seal 0.92 0.56 0.58 0.47 1.23 1.23...

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