The YM-1QQ pressure transmitter adopts advanced diffused silicon sensor technology to achieve high-precision pressure measurement. This article will provide a detailed illustrated explanation of its working principle, analyze how the diffused silicon sensor converts pressure signals through the piezoresistive effect, and discuss the performance advantages and calibration methods of models such as YSZK-01G-C and DMK331 in industrial applications, providing professional reference for technical evaluation personnel.

I. Working Principle of the Diffused Silicon Sensor

The diffused silicon sensor is the core component of the YM-1QQ pressure transmitter, and its working principle is based on the piezoresistive effect of semiconductor materials. When external pressure acts on the sensor diaphragm, the resistance value of the silicon crystal changes, and this change is converted into an electrical signal output through a Wheatstone bridge. The diffused silicon sensor features high sensitivity, good stability, and excellent temperature characteristics, making it especially suitable for precise measurement in industrial fields.

In the YM-1QQ pressure transmitter, the diffused silicon sensor undergoes precision machining and special treatment, enabling it to effectively resist the effects of media corrosion and temperature fluctuations. Compared with traditional strain gauge sensors, the diffused silicon sensor offers higher measurement accuracy (%up to 0.1FS) and longer service life. This is also the key reason why products in the same series, such as YSZK-01G-C and DMK331-250-4000, can maintain stable performance in harsh industrial environments.

II. Structural Composition of the YM-1QQ Pressure Transmitter

The YM-1QQ pressure transmitter is mainly composed of the following parts:

• Pressure connection: Made of 316L stainless steel, compatible with various industrial pipeline standards
• Diffused silicon sensing element: The core measuring component, realizing pressure-to-electrical signal conversion
• Signal processing circuit: Includes modules such as temperature compensation, amplification, and filtering
• Housing protection: IP65 protection rating, suitable for harsh industrial environments
• Electrical connection: Supports multiple output modes such as 4-20mA and 0-5V

Compared with products in the same series such as YM-1XH and YM-130, the YM-1QQ has been structurally optimized in design. Especially for the measurement needs of liquid and gas media, an isolation diaphragm and oil-filling system have been added to effectively prevent the medium from directly contacting the sensing element, thereby extending the service life. This structural design is also applied to models such as MBS-G3131 and has gained wide market recognition.

III. Calibration and Maintenance of Pressure Transmitters

1. Calibration Methods and Steps

For the calibration of diffused silicon pressure transmitters such as YMP-YMP489 and YM-1KGR, the following steps should be followed:

1. Connect the transmitter to a standard pressure source and a precision ammeter
2. Adjust the zero potentiometer under zero-pressure conditions so that the output is 4mA
3. Apply full-scale pressure and adjust the span potentiometer so that the output is 20mA
4. Repeat the above steps 2-3 times to ensure linearity
5. Perform a temperature compensation test and check temperature drift

2. Common Fault Handling

For common fault phenomena of models such as YM-115 and YD-322, the following handling measures can be adopted:

IV. Key Points for Selecting Diffused Silicon Pressure Transmitters

When selecting diffused silicon pressure transmitters such as YSZK-01G-C and DMK331-250-4000, the following key parameters need to be considered:

• Measurement range: Select an appropriate range according to actual working conditions. It is generally recommended that the working pressure be between 30%-80% of the range
• Accuracy class: Models such as YD-322 provide multiple accuracy options such as 0.1%, 0.25%, and 0.5%
• Media compatibility: Confirm the chemical compatibility between the transmitter material and the measured medium
• Environmental conditions: Consider external factors such as temperature, humidity, and vibration
• Certification requirements: Such as special industry certifications for explosion-proof, sanitary, and other applications

As a professional high-tech enterprise, Xi'an Shenghongchuang Instrument Co., Ltd. can provide users with selection guidance and technical support for the full series of pressure transmitters from YM-1QQ to MBS-G3131, ensuring that customers obtain the most suitable measurement solutions.

V. Summary and Recommendations

With their high accuracy and high stability, diffused silicon pressure transmitters have become important equipment in industrial process control. From the analysis of the working principle of YM-1QQ, it can be seen that a high-quality diffused silicon sensor combined with a precision signal processing circuit is the key to achieving accurate measurement. For technical evaluation personnel, when selecting a model, attention should not only be paid to price factors of products such as YSZK-01G-C, but also to their long-term stability and maintenance convenience.

Xi'an Shenghongchuang Instrument Co., Ltd. has a complete product line and rich industry experience, and can provide customers with full-process technical support from YM-1XH manual interpretation to YM-115 fault handling. If you would like to learn more detailed information about specifications, model types, or accuracy classes of diffused silicon liquid and gas pressure sensors, please feel free to contact our technical team at any time to obtain professional product selection advice and technical solutions.

Contact us now: Visit the company's official website or call the customer service hotline to obtain the latest technical资料 and quotation information for the YM-1QQ pressure transmitter and other flow control equipment.