This article provides a detailed analysis of the wiring diagram of the SWT-SWT131 pressure transmitter, helping operators quickly master the installation steps of the diffused silicon pressure sensor. As a professional product of Xi'an Shenghongchuang Instrument Co., Ltd., this transmitter adopts advanced technology to ensure accurate measurement. Through clear wiring schematics and operating instructions, even beginners can easily complete installation and commissioning work.

I. Working Principle of the Diffused Silicon Pressure Sensor

The diffused silicon pressure sensor adopts the semiconductor piezoresistive effect principle. When external pressure acts on the sensing element, the silicon diaphragm deforms, causing changes in the resistance value of the diffused resistors. Through a Wheatstone bridge, the resistance changes are converted into electrical signal output to achieve pressure measurement. On this basis, the SWT-SWT131 pressure transmitter adds a signal conditioning circuit and outputs a standard 4-20mA signal, making it suitable for industrial automation control systems.

II. Detailed Explanation of the SWT-SWT131 Wiring Diagram

Correct wiring is the key to ensuring the normal operation of the pressure transmitter. SWT-SWT131 adopts a four-wire wiring method: power positive (+V), power negative (-V), signal output positive (+OUT), and signal output negative (-OUT). The following points should be noted during wiring: 1) use shielded cables to reduce interference; 2) do not reverse the power polarity; 3) the grounding terminal must be reliably grounded. For specific wiring methods, please refer to the illustrated instructions in the product manual.

III. Installation Steps and Precautions

When installing the diffused silicon pressure sensor, first confirm that the measured medium is compatible with the sensor material. The installation location should avoid vibration and high-temperature environments. Use a dedicated mounting bracket to secure the sensor, and ensure that the sealing surface is clean and undamaged. For liquid media measurement, vertical installation is recommended to avoid sediment accumulation. After installation is completed, zero-point calibration is required to ensure measurement accuracy.

IV. Common Fault Handling

When the SWT-SWT131 pressure transmitter shows abnormal output, troubleshooting can be carried out according to the following steps: 1) check whether the power supply voltage is normal; 2) measure whether the loop current is within the 4-20mA range; 3) check whether the sensor diaphragm is damaged; 4) confirm that the wiring terminals are not loose. If the problem is still not resolved, it is recommended to contact the technical support of Xi'an Shenghongchuang Instrument Co., Ltd.

V. Recommended Related Products

In addition to pressure transmitters, Xi'an Shenghongchuang also provides a variety of precision measurement equipment. For example, Domestic displacement sensor HSAR750 differential pull-rod linear displacement sensor spring-return inductive sensor, this product adopts the differential transformer principle and features non-contact operation and high reliability, making it suitable for measuring mechanical quantities such as tension and vibration. Its operating temperature range is -20℃~120℃, and the output signal can be selected as voltage or current mode to meet the needs of different industrial application scenarios.

VI. Why Choose Us

As a national high-tech enterprise, Xi'an Shenghongchuang Instrument Co., Ltd. has 20 years of sensor R&D experience. All products have passed ISO9001 quality management system certification and come with an 18-month warranty service. Our professional technical team can provide you with comprehensive support including model selection guidance, installation, and commissioning. Call 029-8856XXXX now to obtain detailed technical information about the SWT-SWT131 pressure transmitter.