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  Article 500 Hazardous Locations, Classes I, II, and III, Divisions 1 and 2 Articles 500 through 504 cover the requirements for electrical and electronic equipment and wiring for all voltages in Class I, Divisions 1 and 2; Class II,…

FM: FACTORY MUTUAL The Factory Mutual Approvals Division determines the safety and reliability of equipment, materials or services utilized in hazardous locations in the United States and elsewhere. For a product to receive FM approval, it must meet two criteria.…

The IECEx System is a set of four separate Schemes (of which one relates to Ex Equipment) that were developed to satisfy the calls from the Ex industry for international recognition and coordination of the outputs of various certification systems…

Many information must be reported on the marking plate of equipment and components addressed to hazardous areas which often cause several doubts and also disagreements among technicians and inspections supervisors. The EN 60079-0 standard brings the general Rules about electrical…

ATEX or IECEx  certified products are essential in any location that may contain, or has activities that produce explosive or potentially explosive atmospheres. There are a number of places that could be defined as being in an explosive atmosphere, some…

To all customers  Using  metric threads,  Please be advised that the part numbers have changed for some configurations    Please see below-attached sheet  regarding the new part numbers  

ATEX The ATEX code is an alphanumeric string that denotes the certification achieved by the product along with the environment and conditions it is suitable for. The code can be broken down into a prefix, for example: CE0518 Ex II…

Published on: Jun 12, 2017 NEMA is an acronym for National Electrical Manufacturers Association. This organization gives electrical component enclosures ratings — such as NEMA 4X — based on their protective qualities. NEMA ratings specify whether an electrical component enclosure is…

Published on: Jun 12, 2017 It is often difficult and confusing for engineers to know what type of rating they need to look for when they desire to have a “waterproof” enclosure.  There is a big difference between waterproof, water resistant,…

Published on: Jun 12, 2017 HAZARDOUS AREA SENSORS CERTIFICATION Thermocouples and RTD Sensors are a source of Ignition Electrical equipment including temperature sensors for use in Hazardous Areas needs to be designed and constructed in such a way that it will…

Published on: Jun 12, 2017 Explosion Proof classification for a sensor/transmitter means that the housing has been engineered and constructed to contain a flash or explosion. Such housings are usually made of cast aluminum or stainless steel and are of sufficient…

Published on: Jun 12, 2017 ...likewise, no system is explosion proof if it contains non-explosion proof components. Instrument engineers are responsible for providing safe and appropriate instrumentation. To declare a system safe, simply because a single component is approved, is dangerous…

Published on: Jun 12, 2017 Installing a temperature sensor in a hazardous location requires more than an approved explosion proof connection head. To meet the safety requirements of FM, you must consider the complete system: including the sensor, the thermowell (if…

Published on: Jun 12, 2017 A thermocouple consists of two dissimilar conductors in contact, which produce a voltage when heated. The size of the voltage is dependent on the difference of temperature of the junction to other parts of the circuit.…