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A-Series Miniature Watertight Pressure Switches

A-Series Miniature Watertight Pressure Switches
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A-Series Miniature Watertight Pressure Switches - 1

Data Sheet SASHCROFT Trust the shield.™ FEATURES ■ Compact size ■ 316 SS construction ■ Pressure ranges from vacuum to 15,000 psi ■ Factory set or field adjustable setpoints ■ Wide operating temperature range (-40°C to 100°C) ■ Precision snap-acting micro switch ■ SPDT or DPDT switching ■ UL, CSA listed models ■ CE and ROHS compliant ■ CRN models available (up to 10,000 psi) ■ SIL 3 capable TYPICAL USES ■ Offshore oil rigs ■ Chemical and petrochemical plants ■ Pulp and papermills ■ Autoclaves and sterilizers ■ Rail and heavy vehicles ■ Specialty machinery and equipment Setpoint: Single setpoint - Factory set or field adjustable Setpoint ±2% of span. For ranges 200 through 15,000 psi Repeatability: ±5% of span. For ranges -15/15 through 100 psi (additional setpoint shift ±2% of span per 40°F from initial setpoint setpoint at 70°F typical) Vibration: Passed Mil-STD-202G Shock: 75G’s 10 milliseconds 3 axis Piston: SS w/Viton or Buna-N O-ring Mechanical life >1,000,000 operations typical piston design: Diaphragm: 316L SS Mechanical life >400,000 operations typical diaphragm design: Switch Type: SPDT or DPDT Deadband: Fixed KEY BENEFITS • High performance • Small size • Special connections • Easily configurable to meet your application requirements • SIL 3 capable Enclosure Ratings: NEMA 6, IP67 Pressure % NPTF, / NPTF, / NPTM, % NPTM, % MNPT, Connection: % FNPT, 7A-20 SAE M, VCR, VCO, Tri-Clamp®, 1.5" Tri-Clover®, 2.0" Tri-Clover, G/ B, G/ A Type E Stub end Electrical output: SPDT, or DPDT 5A or 3A 120Vac, 2A @ 30Vdc, gold contacts available Approvals: UL, CSA, CE, CRN, SIL 3 capable, RoHS All specifications are subject to change without notice. All sales subject to standard terms and conditions. © 2019 Ashcroft Inc. awt_switch_ds_RevH_Ltr_02

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A-Series Miniature Watertight Pressure Switches - 2

CASHCROFT Trust the shield.™ A SERIES SWITCH PERFORMANCE CHARACTERISTICS RANGE (Ordering Code) SETPOINT REPEATABILITY SETPOINT ADJUSTABILITY All specifications are subject to change without notice. All sales subject to standard terms and conditions. © 2019 Ashcroft Inc. awt_switch_ds_RevH_Ltr_02-11-19 ashcroft.com info@ashcro

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A-Series Miniature Watertight Pressure Switches - 3

CASHCROFT Trust the shield.™ Ranges (See table on page 3 for additional ranges) 5 Characters maximum representing setpoint of the switch in the same units as the ranges of the switch. For setpoints in vacuum specify as “-” pressure. If no set point is required on an APA switch use either “NSR” or NSD”. If direction is not known use “NSR” as default Setpoint Direction R - Rising pressure (increasing pressure, decreasing vacuum) D - Decreasing pressure (decreasing pressure, increasing vacuum) Options - Select from table on page 3 (If choosing an option(s) must include an X’’) 6B - Cleaned for...

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A-Series Miniature Watertight Pressure Switches - 4

Data Sheet SASHCROFT Trust the shield.™ A-Series Miniature Watertight Pressure Switches DIMENSIONS For reference only, consult Ashcroft for specific dimensionaldrawings FUNCTION CODE MICRO SWITCH FIELD ADJUSTABLE PRESSURE CONNECTION GENERAL DIMENSION All specifications are subject to change without notice. All sales subject to standard terms and conditions. © 2019 Ashcroft Inc. awt_switch_ds_RevH_Ltr_02-11-19

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A-Series Miniature Watertight Pressure Switches - 5

Data Sheet A-Series Miniature Watertight Pressure Switches AVAILABLE CONNECTIONS Pressure Connections ½ NPT CONDUIT CONNECTOR WITH 18 AWG WIRE LEADS SPADE TERMINAL 4-0.187 MALE TERMINALS HIRSCHMANN MICRO-DIN CONNECTOR 43650 FORM C M20 X 1.5 MALE CONDUIT WITH 18 AWG WIRES ½ NPT MALE CONDUIT AND JACKETED CABLE WITH 18 AWG WIRES M20 X 1.5 MALE CONDUIT AND JACKETED CABLE WITH 18 AWG WIRES ⁄16-20 SAE MALE (OPTIONAL 37° FLARE END) Electrical Connections 5 of 7 All specifications are subject to change without notice. All sales subject to standard terms and conditions.

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A-Series Miniature Watertight Pressure Switches - 6

Data Sheet A-Series Miniature Watertight Pressure Switches SELECTION GUIDE Before selecting a switch 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...

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A-Series Miniature Watertight Pressure Switches - 7

Data Sheet 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. 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. Normally about 10% to 100% of the nominal...

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