ME 780 Piezoresistive Pressure Sensor Flush Membrane with signal conditioning

Flush, chemical‑resistant pressure with conditioned output

Introducing ME 780 Pressure Sensors: Our patented ceramic-based sensors utilise the piezoresistive principle with a flush diaphragm and integrated Wheatstone bridge. Signal conditioning electronics on the ceramic generate a 0.5…4.5 V ratiometric output. Calibration is electronically performed with the onboard ASIC, available in bar (ME780) or psi (MEP780) options. The electronics ensure offset and span correction for temperature changes, while zero correction software compensates for offset shifts due to customer assembly. Meeting EMC requirements, the ME 782 family stores production data in the ASIC EEPROM, allowing custom calibration. Thanks to Al2O3 ceramic’s chemical resistance, ME 780 sensors handle aggressive media effortlessly, offering exceptional precision and long-term stability.

ME 780 Ceramic Pressure Transducer Product Parameters

  • Pressure Ranges: Nominal pressure ranges in bar: 0.5, 1, 2, 5, 10, 20, 50, 100, 200, 250, 400, 600; and in psi: 7.5, 15, 30, 100, 150, 400, 1000, 1500, 3000, 4000, 5000, 8500.
  • Output Signal: ME780 offers a ratiometric output range of 0.5…4.5 [V], while ME782 provides a digital I2C output.
  • 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 rating of max. 6 mA (RLOAD ≥ 2 kΩ) for ME780 and 4.5 mA for ME782, with a supply voltage of 4.5…5.5 VDC for ME780 and either 3.3 or 5.0 VDC for ME782.
  • 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%, 99.6% or sapphire diaphragm, a response time of ≤ 5 ms, and compliance with several EMC/ESD standards.

Full Specification: ME 780 Ceramic Pressure Transducer

The ME780 Pressure Sensor is a versatile and efficient device designed to measure pressure in various applications. With a wide pressure range from 0.5 to 600 bar (7 to 8700 psi), it caters to diverse industrial needs. The sensor supports multiple pressure types, including Absolute, Gauge, and Sealed Gauge, offering flexibility in different environments. 

Built on piezoresistive technology with surface-mounted signal conditioning, it ensures accurate and reliable readings. Its compact 18.00 mm diameter flush mount structure makes it easy to integrate into different systems seamlessly. The ME780 provides a ratiometric 0.5 – 4.5 V signal output, enabling simple interfacing with other devices. Whether used in manufacturing, automotive, or other sectors, the ME780 Pressure Sensor delivers precise and dependable pressure measurements, making it a preferred choice for professionals seeking high-quality sensor solutions.

Features

The ME 780 Ceramic Pressure Transducer is known for its excellent resistance to corrosion and abrasion, making it highly suitable for use in harsh environments where aggressive media or abrasive particles are present. This property is particularly valuable in industries such as chemical processing, wastewater treatment, and food and beverage production, where the sensor may be exposed to corrosive fluids or cleaning agents. The robust ceramic diaphragm ensures long-term durability and reliable performance, even under challenging conditions.

Another key feature is its fully integrated signal conditioning, which simplifies installation and operation by providing a standardized output signal. This integration eliminates the need for external signal processing equipment, reducing system complexity and potential points of failure. As a result, the ME 780 is ideal for applications where ease of integration and reliable signal transmission are critical, such as in process automation and industrial control systems.

The transducer is also EMC compliant, meaning it is designed to operate reliably in environments with high levels of electromagnetic interference. This compliance is essential in modern industrial settings, where numerous electronic devices operate in close proximity. By ensuring stable and accurate measurements even in electrically noisy environments, the ME 780 is well-suited for use in factories, power plants, and other locations with significant electromagnetic activity.

Thermally compensated design is another important application aspect of the ME 780. The sensor is engineered to maintain accuracy across a wide temperature range, compensating for temperature-induced measurement errors. This makes it a dependable choice for outdoor installations or processes with fluctuating temperatures, such as HVAC systems, environmental monitoring, and automotive applications.

Finally, the ME 780 features zero stress mounting software, which helps to minimize installation-induced stresses that could otherwise affect measurement accuracy. This design consideration ensures that the sensor delivers precise readings regardless of how it is mounted, making it suitable for applications where mechanical stresses are unavoidable, such as in hydraulic systems or heavy machinery.

To download the latest datasheet click here: ME780
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