120 Series
Rugged, Explosion-proof Pressure, Vacuum, Differential Pressure and Temperature Switches
As safety requirements become more stringent, the determining factor in specifying an industrial pressure, differential pressure and/or temperature switch rests upon that switch protecting equipment, processes and personnel. Meeting hazardous location requirements through worldwide approvals and certifications, UE’s 120 Series is the choice where potentially explosive or highly corrosive atmospheres exist.
The 120 Series offers a variety of pressure, vacuum, differential pressure and temperature ranges, as well as process connections, wetted materials and sensor types. With a common flexible platform, models can quickly be adapted at the factory for special requirements, such as ranges, process connections and electrical ratings. Typical industries using 120 Series switches include chemical, petrochemical, refinery, oil and gas production and transmission, and pharmaceuticals.
Features
- Class 1, Divisions 1 & 2, Zone 1
- UL listed, cUL certified, ATEX flame-proof & CE (LVD, PED) compliant; other worldwide hazardous location approvals available
- Dual electrical conduit openings provide mounting flexibility while terminal block provides ease of wiring
- SPDT, DPDT, or dual SPDT switch output
- Number of pressure sensor materials, including welded stainless steel diaphragms and bellows
- Internal or external set-point adjustment
- Heat trace & freeze protection temperature models
- Adjustable set-point ranges:
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Pressure & Vacuum: 30 ”Hg Vac to 6000 psi
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Water Column: 300 “wc Vac to 250 “wc
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Differential Pressure: 0.2 “wcd to 500 psid
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Temperature: -117.8 to 343.3 ºC
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