Dual Hi-Lo – Explosion Proof Temperature Switch

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Dual Hi-Lo - Explosion Proof Temperature Switch




-60° to 1000°F, -51° to 540°C


Unit: INMETRO, SIL; Switch: ATEX, UL/CSA, TestSafe (SAA)

SOR’s explosion-proof V2 Hi-Lo temperature switch operates on a vapor-pressure thermal system. Fluid vapor pressure changes in a predictable manner according to the influence of temperature on a sensing bulb. It actuates and de-actuates a snap-action piston assembly at a discrete process temperature.

The V2 model features two discrete sensing assemblies and two separate set points with two separate hermetically sealed switch outputs all in a single, housing. The Dual Hi-Lo V2 temperature switch can signal at minimum and maximum temperatures. It is field-adjustable and tamper-resistant making it a convenient choice for just about any industry. The designation “V2” indicates special housing to accommodate the hermetically sealed switches. Ranges from -60°F to 1000°F (-51° to 540°C).

  • 316 SS temperature sensing bulbs
  • Remote sensing bulb is optional
  • Minimal ambient temperature influence
  • AC or DC electrical service

Power Plant 101

Safety Integrity Level (SIL) Short Training

INMETRO Certification