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Ashcroft N-Series Watertight Enclosure Nema 4 Electronic Pressure Switch
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Item Number: NPAN4
Manufacturer: Ashcroft
Part Number: NPAN4
Product Options
* denotes required field
Enclosure/Function Selection*
You must select an option for 'Enclosure/Function Selection'.
Output Selection*
You must select an option for 'Output Selection'.
Power Supply Selection*
You must select an option for 'Power Supply Selection'.
Pressure Connection Selection*
You must select an option for 'Pressure Connection Selection'.
Pressure Range Selection*
You must select an option for 'Pressure Range Selection'.
* Whole number only
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Ashcroft N-Series Watertight Enclosure Nema 4 Electronic Pressure Switch
Ashcroft® N-Series electronic pressure switches have proven reliable in the toughest industrial applications. The pressure sensor is a standard Ashcroft K-Series thin film transducer. The signal developed in the transducer is processed on a conformal coated printed circuit board to produce an output to a high quality electromechanical relay, which is rated for 10,000,000 cycles at rated load! The result is a long lasting pressure switch that will outlast mechanical switches in high cycle applications such as metal stamping presses, plastic injection molding machines, and other machine tool and special equipment. N-Series also features narrow, adjust-able deadbands that can be adjusted to less that 0.5% of range, solving many pipeline and elevated tank applications that are out of the reach of mechanical products. The indicating model is ideally suited for applications where both a pressure indicator and a switch output for alarm, shutdown, control or interlock are needed. Sludge and slurry applications in wastewater and pulp and paper mills often require costly diaphragm seals to isolate instruments from the clogging effects of the process.You can save money by installing N-Series with indication on a single seal. You can even set the switch set and reset points on a test bench without pressure on the system, using the indicator and status lights. Look for these additional features.
Features
- Ashcroft® K Series polysilicon thin film pressure sensor (transducer) for long, stable life (minimum 10 million cycles at rated load)
- Setpoint repeatability of 0.5% of range
- Choice of watertight, NEMA 7/9, IP66 enclosures for safety and reliability
- Pressure setpoints to 20,000 psi
- Deadbands adjustable between 0.1% and 95% of nominal range
- Multi-turn potentiometers make setpoint and deadband adjustments easy
- Status lights indicate switch state
- Continuous power assures operation first time and every time even after years of inactivity
Ideal for pressure alarm, shutdown, control on:
- Machine tools
- Injection molding machines
- Presses
- Pumps
- Hydraulic systems
- Turbines and compressors
- Most process applications
Dimensions
Technical Specifications
PERFORMANCE SPECIFICATIONS
Ashcroft Model: N-Series
Accuracy Class (F.S.): 1.0%
Nonlinearity
Terminal Point* ±0.7%
B.F.S.L. ±0.4%
Hysteresis ±0.2%
Non-repeatability ±0.07%
Interchangeability ±1.0%
*Includes hysteresis
Stability: ±0.5% F.S./year non-cumulative
Durability: 108 cycles 20/80% F.S. with negligible
performance change
Response time: Less than 5m sec
ENVIRONMENTAL CHARACTERISTICS
Temperature Limits:
Storage –65/+250°F
Operating –20/+180°F
Compensated –20/+160°F
Thermal Coefficients (70°F ref.):
Accuracy Zero and Span
1.0% ±0.040% F.S./°F
ELECTRICAL SPECIFICATIONS
Output Signal: Supply Voltage:
4-20mA (2 wire) 36 Vdc unregulated
Reverse polarity protected.
Zero Offset: ±1.0%F.S.
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Ashcroft N-Series explosion proof enclosure features narrow, adjust-able deadbands that can be adjusted to less that 0.5% of range, solving many pipeline and elevated tank applications that are out of the reach of mechanical products.
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