UE 120 Series Explosion-Proof Pressure and Temperature Switch (Models J120, J120K, H122K, B122, E120)

UE 120 Series Explosion-Proof Pressure and Temperature Switch (Models J120, J120K, H122K, B122, E120)

Product Introduction

The UE 120 Series Explosion-Proof Pressure and Temperature Switches are designed for critical safety applications in hazardous environments, offering reliable protection for equipment, processes, and personnel. With worldwide approvals (cULus, ATEX, IECEx) and SIL2 certification, these switches excel in potentially explosive or corrosive atmospheres. The series features adjustable set points, multiple sensor materials (including Hastelloy and Monel ), and versatile output configurations, making them ideal for chemical, petrochemical, refinery, and oil & gas industries.

Product Features

Explosion-Proof Compliance:

Certified for hazardous locations: cULus, ATEX, IECEx; optional approvals for Russia, China, India, etc.

SIL2 compliant per IEC 61508:2010 for safety-critical systems.

NACE MR0175 compliance for corrosive oil & gas applications.

Flexible Sensing & Adjustment:

Adjustable set point range: 5–50 psid (0.3–3.4 bar); deadband: 0.2–2.2 psi.

Internal hex screw or external calibrated dial adjustments with tamper-resistant covers.

Robust Construction:

Working pressure: 30 "Hg to 1200 psi; proof pressure: 2500 psi.

Sensor materials: Hastelloy , Monel , and other alloys for corrosive media.

Electrical & Mechanical Design:

SPDT, DPDT, or dual SPDT outputs; optional hermetically sealed micro-switches.

Integral cover lock and heat tracing options for temperature models.

Environmental Tolerance:

Ambient temperature: -58 to 160°F (-50 to 71°C); storage: -65 to 160°F (-54 to 71°C).

Application Versatility:

Suitable for pressure, vacuum, differential pressure, and temperature monitoring in harsh industrial settings.