ME 772 Flush Diaphragm, Piezoresistive Ceramic Pressure Transducer with signal conditioning

Thermally compensated precision with rugged chemical resistance

Introducing ME 772 Pressure Sensors – the epitome of precision and stability. These sensors feature a ceramic base body, flush diaphragm, and operate using the piezoresistive principle. The Wheatstone bridge, screen-printed on the ceramic diaphragm, faces an interior cavity. Signal conditioning electronics generate a non-ratiometric output of 0 to 10 V. Pressure and temperature calibration are electronically performed with the on-board ASIC, offering versatility in bar (ME772) or psi (MEP772). Constant aging detection ensures long-term stability, and the ME 772 family meets EMC requirements. The ASIC stores production-specific data, allowing custom calibration. With excellent chemical immunity, these sensors are suitable for aggressive media use. Trust ME 772 for unmatched precision and reliability in challenging applications.

ME 772 Ceramic Pressure Transducer Product Parameters

  • Pressure Ranges: Nominal pressure ranges in bar: 0.5, 1, 2, 5, 10, 16, 20, 50, 100, 200, 250, 400, 600; and in psi: 5, 7.5, 15, 30, 100, 150, 300, 400, 1000, 1500, 3000, 4000, 5000, 8500.
  • Output Signal: ME770/MEP770 offers a ratiometric output of 0.5…4.5 [V], ME771/MEP771 offers a current loop output of 4…20 [mA], and ME772/MEP772 offers a non-ratiometric output of 0…10 [V].
  • Accuracy: Varies with temperature and calibration method, with options for high accuracy, standard accuracy, and calibration without thermal compensation, and a maximum accuracy deviation of ± 0.08 %FS/K.
  • Electrical Connections: Electrical ratings vary: ME770/MEP770 – 4.5…5.5 VDC, 6 mA; ME771/MEP771 – 9…35 VDC, 4…20 mA; ME772/MEP772 – 12…35 VDC, 8 mA.
  • Media Compatibility: Suitable for measuring absolute (A), gauge (R), or sealed gauge (S) pressures.
  • Special Features: Features piezoresistive technology with electronic signal conditioning, a ceramic Al2O3 96% diaphragm (standard), and options for 99.6% or sapphire diaphragm, with a response time of ≤ 5 ms and compliance with several EMC/ESD standards. 

Full Specification of the ME 772 Ceramic Pressure Transducer

The ME772 Pressure Sensor offers precise and reliable pressure measurements across a wide range of applications. Its versatile pressure range spans from 0.5 to 800 bar (7 to 11600 psi), accommodating various pressure levels. This sensor is equipped to handle different pressure types, including Absolute, Gauge, and Sealed Gauge, making it adaptable to different environments and setups. 

The advanced technology utilised in the ME772 Pressure Sensor is Piezoresistive with signal conditioning, ensuring accurate readings and signal stability. With a compact 18.00 mm diameter and a flush mount structure, it can be seamlessly integrated into systems without causing any disruptions. The sensor’s signal output is through a 0-10V non-ratiometric, allowing for easy integration with existing setups. Whether for industrial, automotive, or aerospace applications, the ME772 Pressure Sensor provides the precision and versatility required for demanding pressure measurements.

Features

The ME 772 Ceramic Pressure Transducer is particularly valued for its excellent resistance to corrosion and abrasion, making it ideal for use in harsh environments where aggressive chemicals or abrasive media are present. This robust resistance ensures long-term reliability and accuracy, even when the sensor is exposed to challenging process fluids or cleaning cycles, which is especially important in industries such as chemical processing, water treatment, and food and beverage production.

Another key feature is its signal conditioning capability, which allows the transducer to deliver stable and precise output signals. Integrated signal conditioning electronics help minimize noise and interference, ensuring that the pressure readings remain accurate and consistent. This makes the ME 772 suitable for integration into complex control systems and data acquisition setups, where clean and reliable signals are essential for process monitoring and automation.

The transducer is also EMC compliant, meaning it is designed to operate reliably in environments with high electromagnetic interference. This compliance is crucial in industrial settings where various electrical equipment and machinery can generate electromagnetic noise, potentially affecting sensor performance. By adhering to EMC standards, the ME 772 ensures dependable operation and data integrity, even in electrically noisy environments.

Thermally compensated design is another important application aspect of the ME 772. The sensor is engineered to maintain accuracy across a wide temperature range, compensating for temperature-induced errors. This feature is particularly beneficial in outdoor or industrial applications where ambient temperatures can fluctuate significantly, ensuring that pressure measurements remain precise regardless of environmental changes.

Finally, the ME 772 incorporates zero stress mounting software, which is designed to eliminate mechanical stresses that could otherwise distort pressure readings. This mounting approach ensures that the sensor’s performance is not compromised by installation-related forces, making it easier to achieve accurate and repeatable measurements. This is especially useful in applications where the transducer must be mounted flush with process lines or vessels, such as in sanitary or hygienic installations.

To download the latest datasheet click here: ME772
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