Analysis of Key Parameters for Diffused Silicon Pressure Sensors

Are the parameters in the MBS33-060G3061 manual obscure and difficult to understand？ This article provides an in-depth analysis of key indicators for diffused silicon sensors， covering calibration methods， working principles， and troubleshooting for product series such as PT124B and PTX5072， helping you quickly master the selection essentials and technical details of models such as MBS33M-060G2159.

I、Interpretation of Core Parameters of Diffused Silicon Sensors

Taking the MBS33 series as an example， "060G3061" in the model number contains key information： "060" represents a 0~60bar measuring range， "G" indicates the media compatibility grade， and "3061" is the code for a specific electrical interface. The core parameters of diffused silicon sensors include：

For the PT124B-210 series， under a 10MPa measuring range and with an M20×1.5 threaded connection， its temperature compensation range can reach e-20~85℃， superior to the requirements of the industry standard GB/T 15478-2015.

II、Working Principle and Signal Processing

Models such as 7MF15643CA00-1AA1 use the Wheatstone bridge principle： when pressure acts on the silicon diaphragm， the piezoresistive effect causes changes in the resistance of the bridge arms， which are converted by an ASIC chip into a 4~20mA standard signal. Key processing steps include：

• Temperature compensation： built-in PT100 or digital temperature sensor
• Nonlinear correction： 16-bit ADC+polynomial algorithm
• EMC protection： compliant with IEC 61000-6-2 standard

The PTX5072-TC-A1-CA-H0-PB model specifically adopts ceramic capacitive technology， maintaining ±0.25% accuracy even in corrosive media.

III、Detailed Explanation of Calibration Methods and Steps

Calibration of PT124B-210-2.5MPa-M20 must follow the JJG 882-2019 regulations：

1. Warm-up： power on and stabilize for 30 minutes
2. Zero calibration： adjust the ZERO potentiometer under atmospheric pressure
3. Full-scale calibration： apply 2.5MPa standard pressure
4. Linearity verification： 5-point test (0/25/50/75/100%FS)

The DMK331-250-6001 series supports remote calibration via the HART protocol， and parameter configuration can be performed through PACTware software.

IV、Typical Fault Diagnosis and Handling

Common faults and solutions for MBS33-060G3017：

For the MBS33-060G3040 model， when the accuracy is out of tolerance， it is recommended to return it to the factory for laser trimming.

Technical Summary and Selection Recommendations

When selecting a diffused silicon pressure sensor， it is necessary to comprehensively consider media characteristics (corrosiveness/viscosity)， ambient temperature， measuring range (it is recommended that the operating pressure be within 30%~70% of the range)， and explosion-proof requirements (such as Ex d IIC T6). Series products such as MBS33M-060G3124 provided by Xi'an Shenghongchuang have passed SIL2 certification and are suitable for harsh operating conditions in petrochemical， power， and other industries.

If you need the specific calibration curve of PT124B-210-10MPa-M20 or the complete technical drawings of MBS33-060G3061， please contact our engineering team for professional support.