Intrinsically safe

This is achieved by limiting the amount of. Operating and design. The idea is to reduce the available energy to a level. When is intrinsic safety equipment necessary?

Whenever equipment is being installed in an area where combustible material is present it is essential to take steps to minimize the risk of ignition. It is not sufficient to just use IS certified components. An exception to the need for certification is made in the case of “simple apparatus”.

Avoiding ignition entails minimizing both the available power and the maximum temperatures. Defining the maximum level of available power is complex, but in general terms can be considered as meaning voltage less than 29V and under 3mA.

A simpler view is to say that power must be less than 1. Six classes define temperature levels. In general, equipment meeting the Tdesignation is considered intrinsically safe because temperatures will not exceed 135°C (275°F) (equipment dissipating less thanW generally stays below this temperature). A wide range of industrial equipment, such as flashlights, cameras, gas detectors and even radios, are available in intrinsically safe forms.

In terms of instrumentation the biggest need is for pressure and weight measurement. Temperature measurement generally meets the “simple apparatus” rule although temperature transmitters may be needed to send thermocouple signals over longer distances.

Typically IS equipment is slightly more expensive than noncertified versions. Thismore from obtaining and maintaining the approval than from the cost of additional or uncommon components.

What are the Benefits? When electrical equipment and instrumentation must be placed in a hazardous environment, IS offers several benefits. It helps ensure a safe work environment and protects those nearby from explosion risks.

It avoids the cost and bulk of explosion proof enclosures. Additional cost savings accrue from the ability to use standard instrumentation cables. Maintenance and diagnostic work can be performed without shutting down production and ventilating the work area. Insurance premiums may be lower as a result of the reduction in risk.

No, intrinsically safe apparatus cannot replace these methods in all applications due to the reliance on low power and temperature. Where it is possible it often leads to significant savings in installation and maintenance costs. No, the performance is the same as the as the non-certified with higher reliability. These devices use the same parts as the non-certified device but have been designed to limit the energy stored and heat generated in case of an internal fault condition.

Protecting People and PropertyMany industrial, chemical and process environments have significant explosion risks, either due to the presence, actual or possible, of flammable gases and vapors, dusts or fibers. Equipment must be independently certified as IS, and the whole system must be designed to IS standards before entering service. IS design minimizes power and heat creation. Here safety in hazardous areas is.

How is intrinsic safety defined? Learn about how this device is used and can help create safe working environment in more hazardous areas. Fundamentally, intrinsic safety is a low-energy technique where the current, voltage, and power is reduced to a level too low to cause ignition. Devices or wiring are not intrinsically safe.

Hazardous areas such as oil refineries, paint shops, and chemical plants have a high potential for. Intrinsically Safe Equipment square.