Resonant pressure transmitters are pressure measurement devices commonly used in industrial automation fields. The pressure sensor converts the measured pressure into an electrical signal by measuring the deformation caused by force.

1. Unparalleled Accuracy and Long-Term Stability

   Accuracy: It can achieve an accuracy better than ±0.02% of span, making it the preferred choice for trade measurement and critical control.

   Long-Term Stability: This is its core advantage. As the output is frequency (the reciprocal of time), it is not affected by common analog circuit issues such as amplifier drift and gain drift. The annual drift can be less than ±0.1% of URL/10 years, almost "calibration-free".

2. Extremely High Resolution

   The frequency can be measured very precisely (for example, down to 0.1 Hz), thus providing an extremely high resolution for pressure changes, capable of sensing even the slightest pressure variations.

3. Excellent Repeatability

   The repeatability of the resonant frequency is excellent, ensuring highly consistent measurements each time.

4. Inherently Strong Anti-Interference Ability

   The frequency signal is not affected by cable resistance, noise, or voltage fluctuations during transmission, making it highly suitable for long-distance transmission and noisy industrial environments.

5. Direct Digital Output

   Natively compatible with digital systems, eliminating the need for A/D conversion and reducing error links in the signal chain.

Resonant transmitters, due to their high cost, are mainly used in critical situations where accuracy and stability are paramount:

1. Trade handover and measurement:

   Pipeline transportation and tank measurement of oil, natural gas, and petrochemical products. Accuracy is directly related to huge financial settlements and is a high-precision situation required by regulations.

2. Critical process control:

   Pressure control in fine chemical and pharmaceutical reactors, which directly affects product quality and reaction safety.

   Performance monitoring and control of large compressors and turbines.

3. Standards and calibration:

   Used as working standards to calibrate other low-precision pressure instruments in the factory.

4. Energy management and efficiency monitoring:

   Main steam pressure control in power plant boilers, high-performance combustion control.

5. Aerospace and testing:

   High-precision pressure measurement in aircraft static pressure systems and engine test stands.

Resonant pressure transmitters are at the pinnacle of pressure measurement technology. They are not intended to replace the widely used piezoresistive technology, but rather to meet the demands of the top 5% of applications that have almost exacting requirements for accuracy, stability and reliability.