Catalogs >
ASHCROFT >
NPI-Series NEMA 4 Pressure Switch

NPI-Series NEMA 4 Pressure Switch
2Pages

Catalog excerpts

C ASHCROFT' Trust the shield.™ IDEAL FOR PRESSURE ALARM, SHUTDOWN, CONTROL ON -• Machine tools • Injection molding machines • Presses • Pumps • Hydraulic systems • Turbines and compressors • Pipelines • Most process applications • All high-cycle applications 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. PERFORMANCE SPECIFICATIONS Ashcroft Model: N-Series 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 Thermal Coefficients (70°F ref.): Accuracy Zero and Span 1.0% ±0.040% F.S./°F ELECTRICAL SPECIFICATIONS Output Signal: Supply Voltage: Reverse polarity protected. Zero Offset: ±1.0%F.S. MECHANICAL SPECIFICATIONS Standard Construction Materials: Wetted Parts: Diaphragm — 17-4PH SS Pressure Connection —316SS REGISTERED FIRM All specifications are subject to change without notice. All sales subject to standard terms and conditions. © Ashcroft Inc. 2008 07/14 Ashcroft Inc., 250 East Main Street, Stratford, CT 06614 USA Tel: 203-378-8281 • Fax: 203-385-0408 email: info@ashcroft.com • www.ashcroft.com

Open the catalog to page 1

I* ASHCROFT Trust the shield.™ N-Series Electronic Pressure Switches N-SERIES PRESSURE SWITCH MODEL NUMBER: To specify the exact switch desired select entries from appropriate tables as shown in example below. 1 2 3 4 5 6 7 6 - N-SERIES OPTIONS CODE DESCRIPTION_ XEA External setpoint adjustment _Consult factory for other options NPA - Single setpoint, adjustable deadband NPI - Single setpoint, adjustable deadband, process and setpoint indication NOTE: TEMPERATURE SPECIFICATIONS (70°F ref.) -20°Fto 160°F Setpoint shift of up to 2% of range per 50°F change can be...

Open the catalog to page 2