Is the abnormal display of the MBS-G3131 pressure transmitter troubling you? As the core component of diffused silicon liquid and gas pressure sensors, accurate measurement and stable output are crucial to industrial processes. This article systematically analyzes the working principle, calibration methods, and typical troubleshooting solutions of diffused silicon sensors for common models such as the YM series and YD series, helping technical evaluators quickly identify the root causes of display abnormalities in models such as YSZK-01G-C and DMK331.

Working Principle and Technical Characteristics of Diffused Silicon Pressure Sensors

Diffused silicon pressure sensors use the semiconductor piezoresistive effect principle. When the sensing elements of models such as YM-1QQ and YM-1XH are subjected to pressure, the resistivity of the silicon crystal changes and is converted into an electrical signal output through a Wheatstone bridge. Their core advantages lie in the high accuracy of ±0.1%~±0.5%FS (for example, the accuracy grade of YD-322 can reach Class 0.1), as well as stable performance over a wide temperature range of -40℃~125℃. It is worth noting that models such as MBS-G3131 adopt third-generation diffused silicon technology, which controls zero-point temperature drift within ±0.02%FS/℃ through laser trimming, far superior to traditional strain gauge sensors.

Illustrated Typical Fault Troubleshooting Flowchart

Scenario 1: Display value drift of YM-115 pressure transmitter
1. Check the process connection: confirm that there is no leakage at the threaded interface (it is recommended to use a torque wrench to tighten to 35N·m according to the YM-1KGR manual)
2. Verify power supply quality: 24VDC supply fluctuation should be controlled within ±1V (terminal voltage can be measured with a multimeter)
3. Sensor zero reset operation: after disconnecting the pressure source, send the "Zero Trim" command via a HART communicator
Scenario 2: Abnormal output signal of DMK331-250-4000
1. Medium compatibility confirmation: check the material table of YSZK-01G-C to verify whether the sealing diaphragm has been corroded (316L stainless steel is suitable for most liquids/gases)
2. Overpressure protection test: apply 120% full-scale pressure and maintain for 1 minute, then observe zero-point recovery
3. Signal line troubleshooting: when using a three-wire shielded cable, ensure the shield layer is grounded at one end only

Detailed Explanation of the Standardized Calibration Process

According to the GB/T 17614.3-2015 standard, the calibration of the YMP-YMP489 pressure transmitter shall follow:
1. Environmental conditions: temperature 23±2℃, humidity 45%~75%RH
2. Equipment requirements: the accuracy of the standard pressure source must be at least 3 times higher than that of the sensor (for example, calibrating a Class 0.2 YM-1XH requires a Class 0.05 standard instrument)
3. Five-point calibration method: including ascending/descending tests at 0%、25%、50%、75%、100% full-scale points
4. Data recording: parameters such as linearity, repeatability, and hysteresis must be retained (it is recommended to use Shenghongchuang's matching SC-Calibration software)

Why Choose Shenghongchuang's Solutions

As a high-tech enterprise in Xixian New Area, we provide:
• Military-grade manufacturing process: the MBS-G3131 series has passed GJB150A-2009 environmental adaptability testing
• Customized services: the measurement range/output signal can be adjusted according to special model requirements such as YM-1GR
• Rapid response: a professional technical team provides on-site support within 48 hours (including diagnosis of complex faults such as YSZK-01G-C)
• 15 years of industry experience: we have provided pressure measurement solutions for 3000+ customers in total
Call 029-xxxxxxx now to obtain the technical white paper and quotation方案 for products such as DMK331-250-4000