M5151-00000W-700BG Pressure Transmitter Calibration Guide

As a key measuring device in the industrial field，the calibration accuracy of the M5151-00000W-700BG pressure transmitter directly affects production safety and data reliability。This article explains the calibration process of diffused silicon sensors in detail，covering the key operating points of common models such as KYB-Z04、CS-PT1200V，helping technicians quickly master BAR-GP1 accuracy adjustment and EDYBT-49 troubleshooting methods。

I、Working Principle of Diffused Silicon Pressure Sensors

Diffused silicon pressure sensors operate based on the semiconductor piezoresistive effect。When pressure acts on the sensitive element，the silicon diaphragm deforms，causing a change in resistance，which is converted into an electrical signal output through a Wheatstone bridge。Taking model BSCYG9010-1.0 as an example，its core components include a silicon sensing element，a stainless steel isolation diaphragm and a temperature compensation circuit，with an operating temperature range of -40℃~125℃ and an accuracy class of up to 0.1%FS。Compared with traditional capacitive sensors，diffused silicon models such as DG1300-BZ-A-2-25-GZ feature fast response speed（<1ms）and excellent long-term stability（±0.1%/year），making them especially suitable for dynamic pressure measurement scenarios such as hydraulic systems and compressors。

II、Standard Calibration Process（Taking M5151-00000W-700BG as an Example）

1. Preparation：Confirm that the pressure source accuracy is more than 3 times higher than that of the transmitter（for example，using a 0.05 class piston pressure gauge），and check the connection status of the CFUEIIIERC1 display module
2. Zero Calibration：Adjust the ZERO potentiometer under atmospheric pressure so that the output is 4mA（current type）or 0V（voltage type）
3. Full-Scale Calibration：Apply the rated pressure（such as 25MPa for CS-PT1200V），and adjust the SPAN potentiometer to a 20mA output
4. Linearity Verification：Test at 25%、50%、75% range points，and the error should be < the accuracy class（BAR-GP1 is class 0.2）

III、Common Troubleshooting（Taking EDYBT-49 as an Example）

• Output Drift：Check whether the sealing ring is aging，and retighten the process connection fittings
• Abnormal Display：Measure the supply voltage（18-36VDC），and eliminate power interference from model 8472.78-5717
• No Signal Output：Use a multimeter to check the wiring terminals and confirm that no short circuit/open circuit has occurred

IV、Purchasing and Model Selection Guide

When selecting a diffused silicon liquid/gas pressure sensor，it is necessary to comprehensively consider factors such as medium characteristics（corrosiveness、viscosity），ambient temperature（-40℃~85℃ for conventional models），and explosion-proof requirements（such as ATEX certification for CS-PT1200V）。For the food and pharmaceutical industries，it is recommended to choose the 316L stainless steel fully welded structure of DG1300-BZ-A-2-25-GZ；for the chemical industry，attention should be paid to the Hastelloy diaphragm option of CEMPX215-GATCA1。

V、Technical Q&A

Q：Nonlinear error occurs after calibration？
A：It may be caused by plastic deformation of the silicon diaphragm due to sensor overload。Check whether KYB-Z04 has been used under overpressure，and replace the sensor core if necessary。

Q：How to determine the service life of a diffused silicon sensor？0-100bar6 months（corrosive medium）EN 837-1

III、Common Troubleshooting（Taking EDYBT-49 as an Example）

• Output Drift：Check whether the sealing ring is aging，and retighten the process connection fittings
• Abnormal Display：Measure the supply voltage（18-36VDC），and eliminate power interference from model 8472.78-5717
• No Signal Output：Use a multimeter to check the wiring terminals and confirm that no short circuit/open circuit has occurred

IV、Purchasing and Model Selection Guide

When selecting a diffused silicon liquid/gas pressure sensor，it is necessary to comprehensively consider factors such as medium characteristics（corrosiveness、viscosity），ambient temperature（-40℃~85℃ for conventional models），and explosion-proof requirements（such as ATEX certification for CS-PT1200V）。For the food and pharmaceutical industries，it is recommended to choose the 316L stainless steel fully welded structure of DG1300-BZ-A-2-25-GZ；for the chemical industry，attention should be paid to the Hastelloy diaphragm option of CEMPX215-GATCA1。

V、Technical Q&A

Q：Nonlinear error occurs after calibration？
A：It may be caused by plastic deformation of the silicon diaphragm due to sensor overload。Check whether KYB-Z04 has been used under overpressure，and replace the sensor core if necessary。

Q：How to determine the service life of a diffused silicon sensor？
A：When the annual drift of BSCYG9010-1.0 exceeds 0.5%FS，or the response time of BAR-GP1 increases by 30%，sensor replacement is recommended。

VI、Why Choose Us

We provide original factory calibration services for the full range of pressure transmitters such as M5151-00000W-700BG，equipped with class 0.02 standard devices，and can issue CNAS accredited reports。For intelligent models such as CFUEIIIERC1，we also provide on-site calibration training services to ensure that your team masters the JJG882 standard operating procedures。Contact our technical consultant now to get an exclusive quotation solution for KYB-Z04！