Asco-P-Nuclear Qualified Pressure and Temperature Switches

ASCO™ Nuclear Qualified Pressure and Temperature Switches

Product Description

Pressure and temperature switches for Class 1E service are modified versions of the industrial ASCO TRI-POINT product line. Special features include radiation resistance and high-temperature construction. Class 1E switches are available only as factory assembled units consisting of a single switch and transducer assembly, factory set at operating points, and tested as a single unit before shipping from ASCO.

Specifications

Type of Operation: Adjustable deadband, fixed deadband, and two-stage fixed deadband

Pressure Switches: Vacuum to 30" Hg, pressure levels to 8000 psig

Wetted Materials: FKM fluoroelastomer, ethylene propylene, aluminum, brass, and stainless steel

Process Connection: 1/4" NPT, optional 1/2" NPT

Temperature Switches: Temperature ranges -30°F to 510°F (-32°C to 265°C)

Process Connection: Direct-mount 316 stainless steel probe or remote-mount 316 stainless steel armored capillary

Electrical Standard: 5 amp, 250 VAC switch, optional: 10 amp,125 VDC switch

Types of Enclosures: Watertight or Explosionproof/Watertight

Pressure Switches ASCO Qualification Report: AQR-101083/Rev. 2

Temperature Switches ASCO Qualification Report: AQR-020184/Rev. 2

Features

Set point repeatability of ± 3% of operating range.
Accuracy of ± 10% of operating range for qualified life of the unit
Choice of watertight or explosionproof enclosures
Mounts in any position
Visual adjustment scales of pressure switches in psi and bars; of temperature switches in °F and °C
External adjusting nuts
Separate electrical, pressure, and adjusting chambers
Wide selection of pressure switch transducer wetted material suitable for air, water, oil, or corrosive fluids
316 stainless steel temperature switch transducers available in direct-mount or armored capillary and bulb in standard 6 and 12 foot lengths, and optional lengths up to 80 feet