FM-approved explosion-proof liquid level sensors

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Where flammable and explosive atmospheres exist, specialised electrical sensors must be deployed. The new Gems Sensors & Controls ELS-1150XP Series electro-optic liquid level sensors are designed and approved for these types of hazardous environments. At just 2 inches in length, these compact sensors are suitable for monitoring the small, pressurised vessels found in oil, gas and petrochemical environments. They accurately monitor level in applications such as: storage tanks, chemical injection equipment, compression tanks, hydraulic oil vessels, glycol tanks, and other well head automation equipment.

These rugged level sensors have no moving parts and are available in nickel-plated carbon steel or stainless steel. The strong fused glass prism eliminates leak potential and is capable of operation in temperatures ranging from -40degF to +257degF (-40degC to +125degC) and in pressures up to 5000psi.

Ryan Lisiak, Oil & Gas Market Manager at Gems Sensor, says: “These optic sensors give oil & gas equipment manufacturers the assurance to detect level in the harsh environments this industry can bring. With nothing to clog, these optic sensors give a unique way of monitoring high and low level conditions in a variety of applications.”

The explosion-proof ELS-1150XP series is manufactured for use in environment classified as Class I, Div. I, Groups A, B, C, and D; Class II/III, Groups E, F, and G. These are areas containing flammable bases or vapours in quantities sufficient to produce explosive or ignitable mixtures. The ELS 1150XP is approved for use with virtually all hydrocarbon-based liquids and gases, as well as with combustible atmospheres containing dusts of coal, coke, flour, or starches of other grains.

More complete specifications, dimensions and wiring diagrams for the new ELS-1150XP Electro-Optic Level Sensors are available at

04 December 2013

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