Core Principles and Technical Analysis of Diffused Silicon Hysteresis Pressure Sensors

This article provides an in-depth analysis of the core structure of diffused silicon hysteresis sensors through an animated demonstration of the working principle of the MBS3050 pressure transmitter, helping users of models such as PT-709/Y-881 master the key points of pressure sensor selection, installation, and calibration. As professional equipment in the field of flow control, Shenghongchuang Instrument will guide you through the key role of hysteresis sensors in industrial measurement.

1. Analysis of Diffused Silicon Technology and Hysteresis Sensor Structure

Diffused silicon pressure sensors use the piezoresistive effect of semiconductor silicon materials. When pressure acts on the sensitive element, deformation of the silicon lattice causes a change in resistance value, which is converted into an electrical signal through a Wheatstone bridge. The core components of the MBS3050 pressure transmitter include:

• Sensitive Element: A silicon diaphragm manufactured by photolithography, with a thickness of only 0.1mm and linearity up to ±0.1%FS
• Isolation Diaphragm: Made of 316L stainless steel, with pressure resistance up to 3 times the measuring range
• Signal Processing Circuit: Built-in temperature compensation module, operating temperature range -40℃~125℃

Compared with traditional strain gauge sensors, such as the Domestic Weighing Sensor LS-S05 Tension and Compression S-Type Stainless Steel Weighing Sensor using an alloy steel structural design, diffused silicon technology offers higher sensitivity and stability, and is especially suitable for micro-pressure measurement scenarios.

2. Industrial Application Scenarios of the MBS3050 Pressure Transmitter

This model is widely used in the following fields:

In batching scale systems, the symmetrical output characteristics of sensors similar to LS-S05 are complementary to diffused silicon technology. The former is more suitable for static measurement of large-capacity positions, while the latter excels in dynamic pressure monitoring.

3. Key Selection Parameters and Technical Comparison

When selecting a diffused silicon hysteresis sensor, focus should be placed on:

1. Range Matching: The calibration range of PT-709 is 0-1MPa to 0-60MPa, and over-range use will damage the diaphragm
2. Accuracy Class: The standard model of P-A1012 is Class 0.5, while the high-precision version can reach Class 0.1
3. Medium Compatibility: The vegabar17 model is equipped with a Hastelloy diaphragm, with corrosion resistance increased by 3 times

Unlike weighing sensors, pressure transmitters require additional consideration of process connection methods (such as G1/4 flange) and electrical interfaces (4-20mA/Hart protocol).

Installation Specifications and Maintenance Points for Pressure Transmitters

4. PT-309-10 Installation Operation Guide

Correct installation can extend the service life of the sensor:

• Mechanical Installation: Avoid direct installation on vibration sources, and the use of a buffer tube is recommended
• Electrical Connection: Shielded cable length should not exceed 300 meters, grounding resistance ＜4Ω
• Commissioning Steps: Energize first and then apply pressure, and zero calibration must be carried out in a 25℃ environment

For applications requiring frequent disassembly, the quick connector model P-A1018 can be selected, and its sealing performance meets the ANSI/B16.5 standard.

5. Calibration Cycle and Troubleshooting

Recommended maintenance plan:

When the measured value is abnormal, first check whether the pressure guide tube is blocked, and then use a multimeter to test whether the output current is within the 4-20mA range.

Industry Solutions and Technical Services

Xi'an Shenghongchuang Instrument Co., Ltd. provides:

• Free electronic version of the Y-881 pressure transmitter manual
• PT-309 series installation video tutorial
• FB-X customized sensor 72-hour rapid sampling service

For special operating conditions, we can provide integrated solutions for sensors and weighing equipment to achieve coordinated measurement of multiple parameters.

Contact our technical engineers now: Obtain the animated working principle of the MBS3050 pressure transmitter, or consult on selection solutions for models such as P-A1016/P-A1012. Our professional team will provide you with full-process services that comply with ISO9001 standards.