Factors Affecting the Accuracy of Ethernet Intelligent Pressure Scanners
1.Sensor performance: The core component of Ethernet Intelligent Pressure Scanners is the pressure sensor, and its sensitivity, linearity and stability directly determine the measurement accuracy. The aging of sensor materials, temperature drift and mechanical fatigue after long-term use will lead to the accumulation of measurement errors.
2.Environmental interference: Factors such as temperature, humidity and vibration of the measurement environment will interfere with the normal operation of the sensor. For example, temperature changes can cause thermal expansion or contraction of sensor materials, thereby changing their physical properties and leading to measurement deviations.
3.Calibration and maintenance: Lack of regular calibration or improper calibration method will lead to a deviation between the sensor output and the actual pressure value. In addition, maintenance problems such as pipeline dust or sensor pollution will gradually reduce the measurement accuracy of the equipment.
4.Mechanical structure stability: The stress relaxation of the valve body material and the compression and permanent deformation of the seal will change the flow channel characteristics. The test shows that after 2000 pressure cycles, the reliability of long-term measurement is seriously affected.
5.Data acquisition strategy: If the channel switching speed of the scan valve is not matched properly with the sampling holding time, a transient error of 0.1% to 0.3% will be introduced. The clock jitter problem in multi-channel synchronous acquisition will also lead to time base error between channels.
6. Mechanical structure design: In the mechanical transmission chain from the pressure port to the sensor diaphragm, errors may be introduced in each link. The smoothness of the valve body flow channel (usually requires Ra ≤ 0.8 μm) affects the uniformity of flow resistance; The deformation of the seal structure (such as the compression of O-ring) will change the effective volume; Even the torque deviation of the fastening bolts can lead to uneven stress distribution. Multi-channel scan valves also need to pay special attention to the problem of cross talk between channels.
What are the advantages of WindtunerEthernet Intelligent Pressure Scanners?
High-precision sensor and calibration technology: WindtunerEthernet Intelligent Pressure Scanners has 16 built-in high-precision pressure sensors that have been strictly calibrated. Each sensor is processed by multiple technologies such as range calibration, nonlinear compensation and temperature compensation to ensure that it can still be used under complex working conditions. Maintain a high precision of ± 0.05% FS. It provides a CNAS-certified calibration certificate before leaving the factory, and supports multi-channel simultaneous calibration, which greatly improves calibration efficiency.
Environmental adaptive design: The device has built-in atmospheric pressure and temperature sensors, which can monitor environmental parameters in real time, and dynamically compensate for temperature drift through built-in algorithms. In addition, its aviation aluminum shell has excellent anti-interference ability, which further reduces the impact of environmental factors on accuracy.
Maintenance-free pneumatic valve circuit system: Windtuner adopts maintenance-free pneumatic valve circuit design, and the built-in solenoid pneumatic valve can realize internal zero adjustment, full range calibration and multi-point calibration functions. The system supports "purge mode", which can use air to clean the pipeline, effectively prevent impurity blockage, and ensure the stability of the air circuit. Moreover, WindtunerEthernet Intelligent Pressure Scanners has undergone more than 10,000 hours of stability testing before mass production to fully verify product performance.
Intelligent software support: The supporting WindLabX series measurement and control software adopts LabVIEW visual programming method, and has functions such as equipment management, data acquisition, storage and viewing. The software supports the networking of multiple devices to form a distributed data acquisition system, which can be customized and adapted to a variety of Ethernet Intelligent Pressure Scanners and calibrators, further improving the flexibility and scalability of the system.
