Certified ATEX pressure transmitters for Zone 0, 1, and 2 environments. Essential for preventing ignition in refineries, chemical plants, and gas pipelines.
ATEX approved pressure transmitters are critical safety components designed for reliable operation in potentially explosive atmospheres where flammable gases, mists, or dusts are present. This range of instrumentation incorporates specific protection methods, such as intrinsic safety (Ex ia) and flameproof enclosures (Ex d), ensuring that they cannot become an ignition source in hazardous zones commonly found in petrochemical, natural gas, chemical processing, and other demanding industrial environments. Understanding the nuances of ATEX certification and the specific application requirements is key to selecting the correct transmitter for ensuring operational safety and process integrity.
ATEX approved negative 10 mbar vacuum pressure transmitter - ATEX certified intrinsically safe pressure transmitter for measuring from 0 to minus 10 millibar gauge vacuum pressure.
Waste toner dust extraction vacuum transmitter with 1000 mbar range - Intrinsically safe vacuum transmitter with ATEX approval for monitoring pressure in waste toner dust extraction systems. Features a 4-20mA output, G1/2" flush diaphragm process connection for reliable performance in hazardous dust environments.
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Find out more about ATEX Approved Pressure Transmitters to determine which product options and capabilities will best meet your application requirements.
ATEX approved pressure transmitters are specifically engineered for deployment in environments where the presence of flammable gases, vapours, or dusts poses a significant explosion risk. These devices are indispensable in sectors such as petrochemical refining, natural gas processing and distribution networks, chemical manufacturing facilities, and offshore extraction platforms. The core design principle behind these transmitters is the integration of specific protection concepts, mandated by ATEX directives, to prevent the electrical energy or thermal energy of the instrument from becoming an ignition source for the surrounding hazardous atmosphere. Selecting the appropriate ATEX certified pressure transmitter involves a careful assessment of the specific hazardous zone classification (e.g., Zone 0, Zone 1, or Zone 2 for gases; Zone 20, Zone 21, or Zone 22 for dusts) and the nature of the flammable substances present.
The certification accompanying an ATEX pressure transmitter, such as those marked with Ex ia (intrinsic safety, suitable for Zone 0, 1, 2), Ex ib (intrinsic safety, suitable for Zone 1, 2), Ex ic (intrinsic safety, suitable for Zone 2), or Ex d (flameproof enclosure, suitable for Zone 1, 2), provides documented assurance that the device meets stringent safety requirements. For instance, intrinsically safe pressure transmitters limit the electrical and thermal energy to levels below that which could ignite a specific hazardous atmosphere, even under fault conditions. Flameproof (Ex d) designs, on the other hand, ensure that any internal ignition is contained within an enclosure robust enough to withstand the pressure of an internal explosion and prevent its propagation to the external atmosphere. This often involves specialized housings and cable entry glands designed to maintain the integrity of the flameproof path.
Engineers specifying these transmitters must consider not only the ATEX protection method and zone classification but also the process media compatibility, required accuracy, and long-term stability. In applications like monitoring pressures in reactor vessels within a pharmaceutical plant using flammable solvents, or ensuring the integrity of biogas pipelines at a waste treatment facility, the reliability of these transmitters is paramount for operational safety. The materials of construction for wetted parts, such as stainless steel 316L or Hastelloy C276, are critical for resistance to corrosive media, while the choice of diaphragm seals can protect the sensor from aggressive chemicals or particulate-laden flows, thereby maintaining measurement integrity and safety. Furthermore, considerations for installation, including correct earthing and the use of certified cable glands and barriers (for intrinsically safe circuits), are crucial to uphold the ATEX protection.
These specialized pressure transmitters are also frequently employed in hydrogen production and storage facilities, paint manufacturing plants where solvent vapours are prevalent, and in grain silos or flour mills where combustible dust clouds can form. The continuous and accurate measurement of pressure in these environments is vital for process control, leak detection, and overpressure protection, directly contributing to the prevention of catastrophic events. The integration of advanced diagnostic features and robust communication protocols, such as HART, alongside the ATEX certification, allows for enhanced monitoring and predictive maintenance, further bolstering safety and efficiency in these demanding industrial settings.