Detailed Explanation of YBS-S100 Pressure Transmitter Calibration Steps: 5 Key Points to Avoid Measurement Errors

As a core device in industrial measurement, the calibration accuracy of the YBS-S100 pressure transmitter directly affects production safety and data reliability. This article explains in detail the 5 key calibration steps for diffused silicon liquid and gas pressure sensors, covering common technical points for models such as PN-M2 and MBC-1, helping technical evaluators avoid common measurement errors and ensuring that customized products such as MS-MS132 and ET-A meet performance standards.

I. Equipment and Environmental Preparation Before Calibration

Preparation before calibration is the foundation for ensuring measurement accuracy. First, check the appearance integrity of the YBS-S100 pressure transmitter and confirm that the pressure interface (such as M20*1.5 and G1/2) has no mechanical damage. For diffused silicon liquid and gas pressure sensors, special attention should be paid to the cleanliness of the 316L stainless steel diaphragm to avoid medium residue affecting the calibration results.

Environmental conditions are equally critical:

• Control temperature at 20±5℃, humidity ≤85%RH
• The accuracy of the standard pressure source (such as a piston pressure gauge) must be 1 grade higher than the nominal accuracy of the transmitter
• Keep the supply voltage stable at 24VDC±1% to avoid signal drift caused by power fluctuations

Similarly, when domestic general-purpose pressure transmitter AP131 hydraulic oil pneumatic pressure sensor is used in aerospace, petroleum, and similar scenarios, it is also necessary to follow the above environmental standards. Its wide temperature compensation characteristic (-40～+400℃) can effectively reduce the impact of temperature on calibration.

II. Operating Specifications for Zero Point and Full-Scale Calibration

Zero point calibration must be carried out under no-load conditions:

1. Disconnect the pressure interface from the medium connection
2. Power on and preheat for 15 minutes to stabilize the circuit
3. Adjust via HART communication or potentiometer so that the 4-20mA output corresponds to the lower limit value (usually 4mA)

Full-scale calibration requires applying the standard pressure value:

This method is also applicable to diffused silicon pressure transmitters such as PN-M2 and HB-S. For customized models such as CEQ-CEQ1300, the calibration points need to be adjusted according to the actual range.

III. Linearity Verification and Temperature Compensation Calibration

For linearity verification, select at least 5 calibration points (25%, 50%, and 75% range points are recommended):

• Use a precision ammeter to measure the output signal at each point
• Calculate the nonlinearity error: δ=(Δmax/FS)×100%
• For transmitters with 0.1% accuracy grade, δ must be ≤0.1%

Temperature compensation calibration must be carried out in a constant temperature chamber:

Taking the AP131 transmitter as an example, zero point/full-scale calibration must be repeated at the two temperature points of -20℃ and +80℃ to ensure that the temperature drift is ＜0.01%/℃. The temperature characteristic curve of the diffused silicon chip should comply with the requirements of IEC 60770.

IV. Long-Term Stability Testing and Data Recording

According to JJG 882-2019 regulations, 72 hours of continuous monitoring is required:

1. Record zero point and full-scale output values every 8 hours
2. Calculate drift: it should be ＜0.1%FS/year
3. Check changes in contact resistance of electrical connections such as Hirschmann connectors

For remote transmission models such as PMP-PMP317, the transmission stability of the 4-20mA signal also needs to be tested. It is recommended to use an oscilloscope to observe whether the signal waveform is smooth.

V. Preparation of Calibration Reports and Equipment Archiving

A complete calibration report should include:

• Basic equipment information (model, serial number, range, etc.)
• Certificate number and validity period of the standard instrument
• Measured data and deviation values for each calibration point
• Environmental condition records (temperature, humidity, atmospheric pressure)
• Operator signature and calibration date

It is recommended to adopt a QR code management system to electronically store calibration data for different models such as DY-X and ET-A, facilitating subsequent quality traceability.

Summary and Professional Recommendations

Through the systematic calibration of the above 5 key steps, the measurement accuracy of diffused silicon pressure transmitters such as YBS-S100 and MBC-1 can be ensured to reach the 0.1%FS level. Special reminders:

• For harsh environments such as chemical and power industries, it is recommended to recheck once every 6 months
• Customized products (such as MS-MS132) need to have the calibration plan adjusted according to the actual medium characteristics
• When selecting domestic general-purpose pressure transmitter AP131 hydraulic oil pneumatic pressure sensor, it is necessary to confirm whether its temperature compensation range covers the application scenario

As a high-tech enterprise, Xi'an Shenghongchuang Instrument Co., Ltd. can provide full-process technical support from PCM-D installation guidance to CEQ-CEQ1300 model selection consulting. If you need more calibration specifications or customized solutions for diffused silicon pressure sensors, please contact our technical team immediately.