As a core component of industrial automation control, the accuracy class of the YH-A pressure transmitter directly affects system stability. This article provides a measured analysis of the accuracy performance of the diffused silicon Hirschmann pressure sensor used in this model, helping operators understand key parameters and solve pain points such as inaccurate on-site measurement and difficult commissioning.

Technical principles and accuracy definition of the diffused silicon Hirschmann sensor

The diffused silicon Hirschmann pressure sensor adopts semiconductor strain gauge technology and realizes pressure-to-electrical signal conversion through the piezoresistive effect of silicon crystals. Its core advantages lie in the temperature compensation circuit and laser trimming process, enabling the YH-A pressure transmitter to maintain a comprehensive accuracy of 0.02%~0.03%FS within the operating range of -20℃~+65℃. Measured data show that the sensor has a linearity error of ≤±0.02% and a repeatability error of ≤±0.01%, far exceeding the conventional requirements for flow control equipment in the industrial automation field.

Measured data and comparison with industry standards

According to the GB/T 17614-2018 standard "Transmitters for industrial process control systems", we conducted a three-point calibration test on the YH-A pressure transmitter: at the 20%, 50%, and 80% range points, the measured deviations of the diffused silicon Hirschmann sensor were 0.018%, 0.021%, and 0.025% respectively, fully meeting the requirements of the 0.05 accuracy class. Compared with the typical accuracy of 0.1%~0.25% of traditional ceramic capacitive sensors, this model is particularly suitable for scenarios requiring high-precision flow control, such as pharmaceuticals, petroleum, and natural gas.

Accuracy optimization solutions in field applications

In response to the measurement drift issues reported by users, we recommend: 1) avoiding mechanical stress transmission during installation and using flexible connectors; 2) performing regular zero-point calibration (recommended interval ≤6 months); 3) using auxiliary equipment such as the domestic weighing sensor EX302A column-type S-shaped stainless steel tension sensor to build a complete force measurement system. Actual cases show that a chemical plant improved the long-term stability of the BP-IF pressure transmitter by 40% through optimization of the installation method.

Troubleshooting and accuracy maintenance for common faults

When the diffused silicon Hirschmann pressure sensor shows abnormal output, troubleshooting can be carried out according to the following steps: 1) check whether the supply voltage is stably at 10VDC±5%; 2) measure whether the insulation resistance is ≥5000MΩ; 3) verify whether the wiring diagram complies with the BP-IB pressure transmitter specifications. It should be noted that an impact load exceeding the 20t range will cause irreversible accuracy loss, in which case it is necessary to replace it with a large-capacity model such as TMS-QY110.

Why choose our solution

As a national high-tech enterprise, Xi'an Shenghongchuang Instrument Co., Ltd. has all pressure transmitters certified under the ISO9001:2015 quality management system. We provide: 1) free technical consultation and selection services; 2) an extended 18-month warranty period; 3) on-site calibration support. If you need the complete specification model of the YH-A pressure transmitter or an explanation of the working principle of the ZFBY-ZFBY3801 pressure transmitter, please feel free to contact our engineering team.