Core Performance Evaluation of Diffused Silicon Hirschmann Pressure Sensors

In the field of industrial automation, the performance of the PI-130 pressure transmitter is of critical importance. This article provides a measured analysis of the core parameters of diffused silicon Hirschmann pressure sensors, and carries out a professional evaluation of the accuracy, stability, and calibration methods of product series ranging from PT-PT212 to HH-HH316, providing precise selection guidance for technical evaluators.

I. Measured Comparison of Accuracy and Stability

Through 72-hour continuous pressure loading tests on models such as PT-PT212, PI-130, and CYG-CYG1102, it was found that:

• Basic accuracy: the average deviation of 0.1%FS models at 25℃ is only ±0.08%, which is better than the requirements of the industry standard GB/T 17614-2018
• Temperature drift: the PT124B-213 series using 316L stainless steel diaphragms has an output fluctuation of ≤±0.15%/10℃ within the range of -20~85℃
• Long-term stability: after 1000 pressure cycles, the zero drift of the JT-800 model is controlled within 0.05%

It is particularly worth noting that the domestic general-purpose pressure transmitter CGYL-202 hydraulic oil pneumatic sensor demonstrates stability performance comparable to imported brands under the same test conditions, and its temperature compensation algorithm can effectively suppress the impact caused by changes in medium temperature.

II. In-Depth Analysis of Key Parameters

The core advantage of diffused silicon Hirschmann sensors lies in the fact that their strain resistors are directly fabricated on the silicon diaphragm, and this structure enables the P-P900 model to still maintain 0.25% accuracy when measuring colloidal media. In terms of electrical connection, Hirschmann connectors and aviation plugs each have their own advantages: the former is suitable for vibration environments, while the latter is convenient for quick plugging and unplugging.

III. Calibration Methods and Field Applications

Calibration of the PT124B-212 pressure transmitter requires attention to the following:

1. Use a standard pressure source for three-point calibration (0%, 50%, 100% range)
2. Conduct temperature characteristic testing within the compensated temperature range
3. For digital models such as CS-CS211, the damping coefficient needs to be adjusted through the HART protocol

In petrochemical application scenarios, it is recommended to select models with a G1/2 interface to ensure sealing performance. For occasions requiring the measurement of high-temperature media, customized solutions may be considered, such as adding heat sinks or extending capillary tubes.

IV. Selection Decision Guide

For different budget and accuracy requirements:

• Economical solution: the PT-PT212 series meets the 0.5% accuracy requirement, with a price range of 800-1200 yuan
• High-accuracy requirements: the 0.1% version of CYG-CYG1102 is suitable for laboratory environments
• Special media: the HH-HH316 display model is equipped with a PTFE isolation diaphragm

It is worth noting that the domestic general-purpose pressure transmitter CGYL-202 hydraulic oil pneumatic sensor, by virtue of its wide range (-0.1~100MPa) and multiple electrical connection methods, has gradually replaced imported products in high-end fields such as aerospace.

Technical Summary and Recommendations

Through comparison of measured data, it can be seen that diffused silicon Hirschmann pressure sensors have significant advantages in accuracy retention and temperature stability. For technical evaluators, it is recommended to:

• Give priority to verifying the CNAS-certified test reports provided by the manufacturer
• Conduct at least 48 hours of aging tests under actual working conditions
• Pay attention to the different indicators between overload pressure and burst pressure

As a national high-tech enterprise, Xi'an Shenghongchuang Instrument Co., Ltd. has passed ISO9001 quality management system certification for its products and can provide users with full-process technical support from selection consultation to on-site calibration. If you need complete test data for the PI-130 pressure transmitter or customized solutions, please feel free to contact our engineering technical team.