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.

• Detecting water intake blockage on submerged reservoir intake screen using two sensors - Discover a robust solution for measuring head loss and detecting ice blockages on remote water intake screens. Learn how dual submersible pressure transmitters with 4-20mA outputs overcome long-distance signal transmission challenges in reservoir monitoring.
• Barometric pressure sensor for hurricane tracking on uncrewed surface vessel - Barometric pressure measurement in harsh marine environments. This application required a corrosion-resistant, IP67-rated pressure sensor for an uncrewed surface vessel used in hurricane research, capable of withstanding saltwater spray and high humidity.

• SSPT Subsea Wet-Mateable Electrical Connector Pressure Sensor
• DMK457 Marine Approved Pressure Transmitter
• DMP331 Precision Pressure Transmitter
• IMP Low Cost Pressure Sensor

• Near-atmospheric pressure transmitter for hazardous gas test chambers - Intrinsically safe pressure transmitter configured for a narrow, sub-atmospheric range to safely monitor dangerous gases in a test chamber.
• Heating appliance chimney draft and barometric pressure testing using differential and absolute sensors - Very low, bi-directional chimney draft pressure and barometric pressure sensor for testing preformance of wood stoves in a research environment.
• Marine approved atmospheric pressure sensor - Marine-approved pressure sensor for atmospheric pressure measurement on ships. 4-20mA output, 800-1200mbar range.
• 800 to 1200 mbar atmospheric pressure transmitter - Reliable barometric pressure sensor for OEM applications requiring atmospheric pressure compensation in scientific and process instrumentation.
• 700 to 1100 millibar scaled 4 to 20mA output pressure sensor for barometric pressure measurement - 4-20mA output transmitter for monitoring barometric pressure from 700 to 1100 mbar absolute.
• 300 mmHg absolute vacuum pressure transducer with 10 volts output - Absolute pressure transducer for precise vacuum measurement. 0-300 mmHg range, 0-10V output, high accuracy.

• DMP320 0.5 msec Fast Response Pressure Sensor
• IWPT Wireless Battery Powered Pressure Sensor and Receiver
• DS200P Sanitary Low Range Pressure Gauge, Switch and Sensor
• DMP331P Hygienic Flush Pressure Transmitter

• Power generation OEM engine oil pressure sensor with 75bar abs range and RS485 - Robust RS485 absolute pressure sensor for OEM engine oil monitoring in power generation. 0-75 bar range, G1/4 male process connection, and M12 electrical connector. 9-32V DC supply.
• Water pump input/output testing pressure sensor with 30 psi absolute range - Absolute pressure sensor for water pump testing with 30 psi range, 0-10V output, G1/4" male process connection, and Viton seal. Ideal for measuring positive pressure and vacuum.
• Manufacturing automation absolute pressure sensor with 100psia range and 0-10Vdc out - This absolute pressure sensor offers precise and reliable pressure measurement for pneumatic systems. With its 0-10Vdc output, it seamlessly integrates with industrial control systems.

• DMP331i High Accuracy Pressure Transmitter
• DMP333 High Range Precision Pressure Transmitter
• DMK331P Flush Diaphragm Pressure Sensor
• TM Silicon Strain Gauge Pressure Transducer

• 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.
• Absolute Reference Voltage Output Pressure Transducers - High voltage output absolute pressure transducers are essential for precise pressure measurements in applications where a perfect vacuum serves as the reference point.

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

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.