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In industries such as oil and gas, chemical processing, mining, energy, food and beverage, and material handling, measurement equipment is often required to operate where flammable gases, vapors, or combustible dust may be present. In these environments, selecting the right sensor is not only about measurement performance. It is also part of the overall safety strategy.

Intrinsic safety is an explosion-protection method that limits the electrical and thermal energy available within a circuit, helping prevent the ignition of a potentially explosive atmosphere. When properly installed with an approved intrinsic safety barrier, an intrinsically safe ultrasonic sensor can provide non-contact level and distance measurement within hazardous areas.

This makes ultrasonic sensing particularly useful for applications such as monitoring flammable liquid levels in tanks, measuring material levels, detecting objects or equipment position, and monitoring distance on process equipment. Because ultrasonic sensors operate without contacting the target material, they can also reduce exposure of the sensor to corrosive, abrasive, or otherwise difficult materials.

Migatron Corporation designs and manufactures intrinsically safe ultrasonic sensors for hazardous area applications. The RPS-409A-IS2 carries ANZEx, ATEX, IECEx, and C-UL-US approvals and is designed for use in mines susceptible to firedamp (Group 1 protection level Ma), and in hazardous gas and dust environments, including Zones 0, 1, 2, 20, 21, and 22 and Class I, II, and III locations when used with an approved intrinsic safety barrier(s). The RPS-429A-IS also offers ATEX, IECEx, and C-UL-US approvals, with 4–20 mA current-loop or 1–5 V analog output options.

As automation expands into hazardous environments, safe and reliable measurement becomes increasingly important. Migatron also works directly with OEMs and engineers to develop customized ultrasonic sensing solutions tailored to specific application and integration requirements.

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