Absolute Pressure Sensors

Absolute pressure sensors are essential tools for engineers and scientists who need to measure pressures relative to a perfect vacuum.

Their versatility makes them ideal for a wide range of industrial and research settings, including leak testing, barometric pressure monitoring, and gas systems. Explore our comprehensive selection of absolute pressure measurement devices, offering a variety of output signals to suit your specific needs.

Choose from a variety of output options, including millivolt, amplified voltage, current loop, and digital, to seamlessly integrate with your existing systems.

• DMK457 Marine Approved Pressure Transmitter - Marine approved pressure transmitter with 4-20mA current loop output for shipbuilding with optional CuNiFe housing for sea-water compatibility
• DCT 531 Modbus RTU RS485 Pressure Sensor - The DCT 531 digital pressure sensor has a Modbus RTU RS485 interface for transmitting pressure readings over a digital sensor network.
• DMP331 Precision Pressure Transmitter - Stainless steel pressure transmitter with ranges from 100mbar up to 40 bar gauge or absolute. Special options for ATEX , SIL2 and compound ranges.
• DMP320 0.5 msec Fast Response Pressure Sensor - High frequency response pressure sensor with a better than 0.5 millisecond response time and internal digital signal conditioning that samples readings at a rate of 10 kilohertz.
• IMP Low Cost Pressure Sensor - Versatile low price pressure sensor with a wide selection of electrical and mechanical options for customisation.
• DMP331P Hygienic Flush Pressure Transmitter - Sanitary pressure sensor wth exposed diaphragm with no crevices for high temperatures up to 300 Degrees Celsius in ranges from 100mb up to 40 bar gauge or absolute

• Water pump input/output testing pressure sensor with 30 psi absolute range
• Manufacturing automation absolute pressure sensor with 100psia range and 0-10Vdc out
• Power generation OEM engine oil pressure sensor with 75bar abs range and RS485
• 700 to 1100 millibar scaled 4 to 20mA output pressure sensor for barometric pressure measurement
• 300 mmHg absolute vacuum pressure transducer with 10 volts output
• Marine approved atmospheric pressure sensor

• Barometric Pressure Transmitters - Select barometric pressure transmitters with compressed output scaling for superior resolution in detecting incremental atmospheric changes. Ideal for environmental controls & gas analysis compensation.
• Absolute Pressure Transmitters - Select absolute pressure transmitters with 4-20mA output, designed for precise measurements against a perfect vacuum. Ideal for leak testing, vacuum processes, and barometric-independent applications.
• Waterproof Absolute Pressure Sensors - Discover robust waterproof absolute pressure sensors, ideal for reliable underwater pressure and level measurement where vented sensors are impractical. Learn how readings convert to gauge pressure. Suited for subsea, borehole, and marine deployments.

Find out more about our Absolute Pressure Sensors to determine which product options and capabilities will best meet your application requirements.

Related Product Types

• Barometric & Atmospheric Pressure Gauges
• Absolute Reference Pressure Gauges

Absolute pressure sensors are engineered to measure pressure in relation to a perfect vacuum (0 PSI absolute). This distinction is critical in applications where the reference point must be absolute zero, rather than the fluctuating atmospheric pressure used in gauge pressure sensors.

Applications

• Leak Testing: By measuring pressure relative to a vacuum, absolute pressure sensors detect leaks in systems independently of changes in atmospheric pressure, ensuring the integrity of sealed environments.
• Barometric Compensation: In applications sensitive to atmospheric pressure fluctuations, absolute pressure sensors provide accurate readings by factoring in barometric changes. This is crucial for altitude measurements, weather monitoring, and process control systems.
• Atmospheric Pressure Measurement: These sensors directly measure the pressure exerted by the atmosphere, aiding in meteorological studies, aviation instrumentation, and environmental monitoring.
• Industrial Processes: Absolute pressure sensors monitor and control vacuum levels in manufacturing processes, ensuring product quality and process efficiency. They are used in leak detection systems, vacuum packaging, and distillation processes.
• Scientific Research: These sensors play a crucial role in scientific experiments requiring precise pressure measurements, such as vacuum chambers, gas analysis, and material characterization.
• Environmental Monitoring: Absolute pressure sensors are used in weather stations to measure barometric pressure, contributing to accurate weather forecasting and climate studies.
• Offshore Research & Exploration: Certain absolute pressure sensors are designed for underwater use, measuring pressure relative to a vacuum at significant depths. They play a crucial role in oceanographic research and subsea exploration.

Output Options

Absolute pressure sensors offer a range of output options to suit different system requirements.

• Millivolt Output: Provides a low-level voltage signal directly proportional to the applied pressure, commonly used with data acquisition systems and signal conditioners.
• Amplified Voltage Output: Delivers a higher-level voltage signal for easier integration with control systems and process instrumentation.
• Current Loop Output: Offers a 4-20 mA current signal, widely used in industrial automation for its inherent noise immunity and long-distance transmission capabilities.
• Digital Output: Provides pressure readings in digital format, typically via RS-232, RS-485, or I2C interfaces, enabling direct communication with computers and PLCs.