Neodyn 152P NEMA 4X, 7, 9 & 13 Differential Pressure Switch

Neodyn 152P NEMA 4X, 7, 9 and 13 Differential Pressure Switch is a specialized ultra-low adjustable instrument designed for critical monitoring in hazardous and corrosive atmospheres. Distinguished by its unique construction, this switch combines high proof pressure capabilities with the sensitivity required for low-pressure applications, ensuring safety and precision in volatile industrial environments.

Description

The Neodyn 152P NEMA 4X, 7, 9 and 13 Differential Pressure Switch is engineered to bridge the gap between high-level protection and low-level pressure detection. It is specifically built for sectors where equipment is exposed to explosive gases or corrosive elements but requires the delicate monitoring of slight pressure variances.

Ultra-Low Pressure Precision Unlike standard switches, the 152P is an “ultra low adjustable” device. This makes it invaluable for applications such as monitoring air flow in ventilation ducts or detecting minor clogging in fine filtration systems. Despite its sensitivity, it maintains a high proof pressure rating, protecting the sensor from sudden pressure spikes that could damage less robust instruments.

Nega-Rate® Stability Reliability in harsh conditions is achieved through the Nega-Rate® Belleville disc spring. This snap-action mechanism ensures that the switch actuates decisively at the set point, providing stable and repeatable performance. This design is inherently resistant to vibration, reducing false alarms and maintenance calls in active plant environments.

Hazardous Location Rated The 152P is housed in a rugged enclosure that meets NEMA 4X, 7, 9, and 13 standards. This certification guarantees protection against corrosion, explosive gases, combustible dusts, and moisture. Additionally, the electrical assembly is listed by Underwriters’ Laboratories, Inc., FM Approval, and CSA International, ensuring compliance with rigorous safety protocols.

Brand

Neodyn

Neodyn

ITT Neo-Dyn® is a leading manufacturer of high quality and reliable industrial switches. Our compact adjustable switches, pressure switches, hazardous area switches, vacuum switches, and temperature switches support a variety of applications throughout the world. Our legacy of competitively priced products and on time delivery, guarantee that you have the proven performance in the product that you need to support your specific requirements when you need it most. With a strong focus in the aerospace, general industrial, energy and chemical markets, we are your first choice for all of your switch product needs.

Specifications

  • Electrical: Snap action electrical switch assembly listed by Underwriters’ Laboratories, Inc., FM Approval and CSA International
  • Electrical Connection: 1/2 NPT male conduit connection with PVC insulated 18 AWG, 18” long leads
  • Pressure Connection:
    • High — 1/2 NPT Female
    • Low — 1/4 NPT Female
  • *Temperature Range:
    • Ambient: -40°F to +180°F (-40°C to +82°C)
    • Media: -50°F to +250°F (-46°C to +121°C)
  • Adjustment: Concealed wrench flat adjustment with range scale
  • Shipping Weight: Approximately 4 pounds

*Temperature limits change with O-Ring selection. See Electrical Assembly specification sheet for Temperature Class Ratings.

Features

  • Ultra-Low Adjustment: Specifically designed for applications requiring sensitive differential pressure monitoring.
  • Nega-Rate® Technology: Features Belleville disc spring for superior set point stability and vibration resistance.
  • Hazardous Area Protection: Explosion-proof enclosure meets NEMA 4X, 7, 9, and 13 standards.
  • High Proof Pressure: Unique construction allows for high proof pressure despite low set point ranges.
  • Secure Adjustment: Concealed wrench flat adjustment with a visible range scale for precise calibration.
  • Certified Safety: Electrical assembly listed by UL, FM Approval, and CSA International.

Applications

Neodyn 152P NEMA 4X, 7, 9 and 13 Differential Pressure Switch is ideal for specialized low-pressure tasks in hazardous zones:

  • HVAC in Hazardous Areas: Monitoring air flow and filter status in refinery ventilation systems.
  • Chemical Processing: Detecting slight pressure drops across fine filters in corrosive environments.
  • Leak Detection: Monitoring integrity in low-pressure containment vessels.
  • Tank Level Monitoring: Measuring liquid levels via differential pressure in bubbler systems.
  • Gas Recovery: Controlling vapor recovery units where pressures are minimal but explosive risks are high.