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NPA-Series NEMA 4 Electronic Pressure Switch
Brand: Ashcroft IncDoes not ship to OH, United States
The Ashcroft® NPA Watertight pressure switch was designed to satisfy challenging applications requiring high cycle life with high current switch functionality.
This design incorporates a transducer that uses proven thin film technology to trigger a high quality relay, making this an extremely repeatable, reliable and long lasting switch.
This switch is ideal for use with pressure control, shutdown or alarm operations.
Features- Pressure ranges up to 20,000 psi
- Incorporates Ashcroft’s thin film sensing technology which provides repeatability and durability
- Multi-turn potentiometers allow easy setpoint and deadband adjustments
- Relay switch status indication light
- SPDT 10 amp relay with optional 4-20 mA output
- Designed for high cycle life ≥ 10 million cycles
- CRN approved
Specifications
Brand
Setpoint Repeatability
- ±0.50% of Span (Single Setpoint)
Pressure Range
- 60 to 20,000 psi
Deadband
- Adjustable Deadband
Response Time
- ≤ 5 ms
Enclosure Material
- Anodized Aluminum
Environmental Protection
- NEMA 3, 4, 4X, 13 / IP66
Diaphragm/Actuator Material
- 17-4PH Stainless Steel
Output
- Switch SPDT (STD.)
- 4-20 mA (2-wire) (OPT.)
Process Connection
- 1/2" NPT Male
- 1/2 NPT Female
- 1/4" NPT Female
- 1/4" NPT Male
- 1/4" Aminco Female
- 1/8" NPT Female
- 1/8" NPT Male
- 7/16-20 SAE - 1/4 SAE
- 1/2" NPT Male & 1/4" NPT Female Combination
- 9/16-18 UNF-2B Female for 1/4" High Pressure Tubing
Process Connection Material
- 316L Stainless Steel
Accuracy
- ± 1.0 % of Span
Stability
- ± 0.5 % of Span/Year Non-cumulateive
Hysteresis
- ± 0.2 %
Nonlinearity Terminal Point
- ±0.7% (includes hysteresis)
B.F.S.L
- ±0.4%
Nonrepeatability
- ±0.07%
Interchangeability
- ±1.0%
Thermal Coefficient
- Zero and Span: ±0.04% of Span (70°F ref)
Durability
- 10⁸ Cycles 20/80% of Span With Negligible Performance Change
Mounting
- 2" Pipe Mounting Bracket
Process Temperature
- -29° to 73° C (-20° to 160° F)
Storage Temperature
- -54° to 121° C (-65° to 250° F)
Compensated Temperature
- -29° to 73° C (-20° to 160° F)
Electrical Termination
- 3/4 NPT Female
Power Requirement
- 110 Vac, 50/60 Hz
- 24 Vdc
- 250 Vac, 50/60 Hz
- 12-36 Vdc Unregulated
- Process Market:
- Pipelines
- Industrial Market:
- Machine Tools
- Injection Molding Machines
- Presses
- Pumps
- Turbines & Compressors
- Specialized OEM Equipment
- Process Applications:
- Hydraulic Systems
