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The Ashcroft® A-Series miniature pressure switches are designed for tough applications where conventional designs often don't measure up. A rugged 316 SS enclosure gives uncompromising protection. Materials of construction have been selected for long life. Precision snap acting micro switches are featured and fully encased to prevent moisture from corroding switch contacts. The switch, depending on range, is either an all welded 316 stainless steel diaphragm sealed piston design or a direct acting piston design sealed with a Buna-N or Viton O-ring. Ideal for pressure alarm, shutdown, or control on heavy vehicles, machine tools, electronic equipment, engines, compressors, food and beverage processing equipment, and wherever size is a consideration or equipment is being downsized.
Setpoint: Factory set or field adjustable
Setpoint
repeatability: ±2% of range
(Additional setpoint shift of ±2% of range per
40°F from initial setpoint set at 70°F typical)
Vibration: Passed MIL-STD-202G
Shock: 75G’s 10 milliseconds 3 axis
Piston: Stainless steel with Viton or Buna-N O-ring
Mechanical
life piston
design: >1,000,000 operations typical
Diaphragm: 316L SS
Mechanical
life diaphragm
design: >400,000 operations typical
Enclosure
material: 316L SS
Enclosure
rating: NEMA 6, IP 67
Pressure
connection: 1⁄8 NPTF, 1⁄4 NPTF, 1⁄4 NPTM, 1⁄8 NPTM,
7/16-20 SAE M, VCR, VCO,
3⁄4 Tri-Clamp®, 1.5 Tri-Clover®,
2.0 Tri-Clover®, G1⁄4 B, G1⁄4 A Type E Stub end
Electrical
output: SPDT, or DPDT 5A or 3A 120VAC, 2A @ 30 VDC, gold contacts available
Electrical
termination: Wire leads, spade terminals or custom cables,
1⁄2 NPT conduit connec-tion with wire leads, Micro DIN with
and without mating connector
Approvals: CRN: OF 14836.5C, CSA: 2454057 (LR55528), UL: E34743, CE, ROHS
Dimensions
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Offshore oil rigs
- • where stainless steel construction and small size is desirable.
Chemical and petrochemical plants
- • where small size and corrosion resistance construction is important.
Pulp and paper mills
- • where corrosion resistance and sealed contacts extend life.
Special equipment such as autoclaves and sterilizers
- • where special connections are needed.
Rail and heavy vehicle hydraulic and pneumatic braking applications
- • where small size is an advantage and long life is required.
Other special machinery and equipment applications
- • where small size and high performance is a must.
