Intrinsically safe differential pressure sensors are essential for accurate pressure measurement in hazardous environments where explosive atmospheres may be present. These specialized sensors are designed with safety in mind, ensuring reliable operation without the risk of igniting flammable gases, vapors, or dust.
ATEX rated room ±100 Pa differential pressure transmitter - Differential pressure transmitter with a -100 to +100 Pascal range for measuring the difference in pressure between the inside and the outside of a room, in an ATEX zone.
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DMD331 Compact Differential Liquid Pressure Sensor
PD39X High Differential Pressure Transmitter
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- Low range ATEX approved 100 Pascal range DP transmitter
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Differential pressure sensors measure the difference in pressure between two points in a system. In hazardous environments, where flammable gases, vapors, or dust may be present, the electrical components within a standard sensor can pose an ignition risk. Intrinsically safe differential pressure sensors in conjunction with a suitable intrinsically safe zone barrier address this risk by limiting the electrical energy within the sensor to a level that is too low to cause ignition, even in the presence of a flammable mixture.
Applications
Intrinsically safe differential pressure sensors, coupled with IS zone barriers, are crucial for maintaining safety and efficiency in various hazardous area applications. Here are some specific examples:
- Filter Monitoring: In chemical processing plants or pharmaceutical manufacturing facilities, these sensors can be used to monitor the pressure drop across filters. This allows for timely filter replacement, preventing contamination and ensuring product quality. The intrinsically safe design prevents any sparks that could ignite flammable dust or vapors often present in these environments.
- Flow Measurement: By measuring the differential pressure across a restriction such as an orifice plate, these sensors can accurately determine flow rates in pipelines carrying flammable liquids or gases. This is critical in oil and gas refineries, where precise flow control is essential for safe and efficient operation.
- Level Measurement: In storage tanks containing volatile liquids, intrinsically safe differential pressure sensors can be used to measure the hydrostatic pressure difference between the top and bottom of the tank, providing accurate level measurements. This helps prevent overfilling and ensures safe storage of hazardous materials.
- Leak Detection: These sensors can be employed to detect leaks in pipelines or vessels containing flammable materials. By monitoring pressure differences, even small leaks can be identified promptly, minimizing the risk of explosions and environmental damage.
- Process Control: In chemical reactors or other process equipment handling flammable substances, these sensors can monitor pressure differentials to ensure optimal operating conditions. This helps maintain product quality, prevent runaway reactions, and ensure the safety of personnel and equipment.
- HVAC Systems in Hazardous Areas: Maintaining proper ventilation and air pressure in hazardous areas is crucial for safety. Intrinsically safe differential pressure sensors can be used to monitor air flow in ventilation ducts and ensure proper pressure differentials between different zones, preventing the buildup of flammable gases or vapors.
By utilizing intrinsically safe differential pressure sensors with IS zone barriers, industries operating in hazardous environments can achieve accurate pressure measurements while minimizing the risk of explosions. These sensors provide a reliable and safe solution for critical applications in various sectors, including oil and gas, chemical processing, pharmaceuticals, and wastewater treatment.