NPA-Series NEMA 4 Electronic Pressure Switch
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.
Key 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
Applications:
Process Market:
Pipelines
Industrial Market:
Machine Tools
Injection Molding Machines
Presses
Pumps
Turbines and Compressors
Specialized OEM Equipment
Process Applications:
Hydraulic Systems
Specifications
Certifications & Approvals
Datasheets & Instruction Manuals
Drawings
Accuracy
±1% of full span
Setpoint Repeatability (Accuracy)
±0.50% full scale
Switch output
SPDT
SPDT 10 Amp Relay Optional 4-20mA output (requires isolated 24 Vdc power supply)
Setpoint
Single setpoint
Deadband
Adjustable
Enclosure Ratings
NEMA 3, 4, 4X and 13 (IP65)
Enclosure Material
Epoxy coated aluminum
Pressure Connection
1/8 NPT Male
1/4 NPT Male
1/8 NPT Female
1/4 NPT Female
1/2 NPT Male
1/4 Aminco Female
7/16-20 SAE Female
1/2 NPT Female
Electrical Termination
3/4 NPT Female
Diaphragm/Actuator Material
17-4PH stainless steel
Pressure Ranges
60 thru 20,000 psi
Ambient Temperature Range
-20°F to 160°F (-29°C to 73°C)
Process Temperature
-20°F to 160°F (-29°C to 73°C)
Contact Ashcroft
Ashcroft is a trusted source for pressure, temperature, and test instruments around the world. Learn more about how we can help you protect your people, processes, and profits.