Intrinsic safety (IS) is a protection technique for safe operation of electrical equipment in hazardous areas by limiting electrical and thermal energy available for ignition to safe levels. Hazardous (classified) locations might exist in any manufacturing location with vapors, dust or flyings, but are common in large bakeries (flour), plastics manufacturing plants (vapors or dust), chemical plants (vapors), paint-finishing locations (vapors), and grain silos (dust or flyings), to name just a few.
Hardy recommends using intrinsically safe low-energy components in hazardous areas (including load cells, scales, and summing boxes) and limit power and current to them through intrinsic barriers that prevent energy from crossing over from the safe area. Hardy products for Hazardous Areas include:
- A large number of Intrinsically Safe load cells, including OneMount™, high-capacity rocker beams, compression load cells, tension load cells and single points
- Junction boxes with Class I, Div. 1, IECex, and ATEX certifications
- Hardy Floor Scales, Lift Deck Floor Scales and Bench Scales
Weightless Calibration & Integrated Diagnostics Ideal for Safety in Hazardous Areas
Hardy Weight Processors, Weight & Rate Controllers and Plug-In Weight Modules use proprietary technologies that have great value for hazardous area applications and confined spaces. The Hardy Process Toolbox is a unique set of productivity tools that support industrial weighing functions. Each tool saves time, increases accuracy, improves efficiency or reduces risk in process weighing applications.
A key benefit of Hardy’s Process Toolbox for Hazardous Areas is that calibration and diagnostics of weighing functions can take place in a safe area. Hardy C2® Electronic Calibration allows quick and easy calibration of a weighing system from the safe area. This reduces the risks of bringing test weights into the hazardous area, making it safer for operators with less risk of contamination. Likewise, Integrated Technician® performs system diagnostics and helps operators troubleshoot their weighing system from the front panel of the weighing instrument or via the PLC.
* In North America, National Fire Protection Association (NFPA) Publication 70, National Electric Code® (NEC) in Articles 500 to 506. Internationally, the IECEx certification scheme is regulated by the International Electrotechnical Commission (IEC). IECEx 02 IEC System for Certification to Standards relating to equipment for use in Explosive Atmospheres (IECEx System). ATEX Certification is the national certification standard of the European Union, and mandatory to operate equipment in explosive atmospheres in Europe.Click here to download copies of certification in PDF formatClick here for related articles and news on Weighing SolutionsSearch for Weighing Solution manufacturers in our Equipment Guide
Sign up for Weighing Systems & Scales E-Updates
Recent Weighing Systems and Scales e-newsletters
Read our last “Weighing Systems and Scales” e-newsletter campaigns here:
Hardy Process Solutions provides process weighing equipment for a variety of industries including food processing, automated manufacturing, chemical, plastics, rubber, and more. We have been offering accurate, quality industrial weighing systems since 1918. At Hardy, we assist processors and manufacturers by offering process measurement solutions that ...