SST Sensing Ltd, a DwyerOmega brand introduces a range of intrinsically safe optical liquid level switches approved for hazardous areas. They are designed for use in demanding applications where direct contact with hydrocarbons, fuels, and flammable or explosive liquids is required.
Using innovative infrared technology and the principle of total internal reflection, these hazardous approved switches are suitable for a wide range of applications, including presence or absence of any liquid, petrochemicals/oil and gas, tank/container level-control, and downstream analyzer protection. The switches offer an almost instantaneous response time and switch point repeatability of +/- 1 mm, providing highly accurate readings, and require no calibration.
Wide range of operating temperatures
These liquid level switches are highly robust and resistant to chemical attack, with an operating temperature range between -30 and +80°C. The switches are housed in 316 stainless steel and come with a choice of sensing tip materials, making them ideal for use in challenging environments. Certified to meet stringent ATEX and IECEx safety standards, this sensor is suitable for use in hazardous area zones 0, 1 & 2 and ensures intrinsic safety by maintaining energy levels low enough to avoid ignition risks, even in faulty conditions, making it ideal for a wide range of applications and is designed for Equipment Groups IIA, IIB, and IIC with a temperature classification of T4 as defined by EN/IEC standards 60079-0, and 60079-11 (latest versions).
