A significant proportion of industrial equipment will be deployed in hazardous areas, or possibly applications that require a functional safety assessment. Hazardous areas include locations where there is the risk of exposure to flammable or even explosive substances.
Some of the most common applications for hazardous duty sensors are in the oil and gas industry. With flammable agents common in applications near the wellbore, most electrical components on the rig require special hazardous area certification. Hazardous duty sensors are also used in applications such as paint spray booths because of the volatiles coming off the paint; grain silos because the dust environment is very explosive; chemical factories; explosives factories; and believe it or not, for cosmetics because the very fine powders that are used are highly explosive.
In such circumstances, ensuring ongoing operation can prove to be challenging. It is, therefore, critical that the component parts that make up such items of equipment are suitably constructed to function in these uncompromising environments.
In hazardous areas, the presence of flammable gas, vapor, liquid, or dust can bring major risk to the activity of an electrical device, as there is the prospect that the device could ignite the flammable substance. For equipment incorporating position-sensing technology, the constituent sensor device (or devices) should have appropriate features to address these issues.
HSI Sensing’s range of high-performance, intrinsically safe sensors have been certified for use in hazardous locations.
HSI Hazardous Location Sensors are ideal for performance in extreme conditions where industrial controls must not fail. This already robust line of products, which previously included Spot On™, a leverless limit switch that activates in the presence of ferrous metal or steel, now includes magnetic sensors and latching switches.
The entire Hazardous Location Sensors line is UL 1203, Class 1, Division 1 listed, placing it among an elite group of hazardous location sensors that meet standards for being explosion-proof and dust-ignition-proof. The line is also ATEX and IECEx certified, allowing the product to meet customer needs throughout Europe.
HSI Sensing’s HAZLOC Sensor Advantages, include:
- Not ESD sensitive
- No moving magnets or parts for intense reliability
- Vacuum-sealed contacts for reliability in extreme environments
- High performance, proven dependability
- UL 1203 Listed