As the core equipment for industrial flow control, the measurement accuracy of the NS-I pressure transmitter directly affects production safety and efficiency. This article focuses on the calibration requirements of diffused silicon liquid and gas pressure sensors, detailing 5 key steps, covering troubleshooting and accuracy calibration methods for common models such as KYB-800 and HTJ-HTJ110, helping operators quickly master the standardized calibration process for pressure transmitters such as PT124B-210.

I. Core Significance of NS-I Pressure Transmitter Calibration

In industrial scenarios such as petrochemicals and power energy, a measurement error of more than 0.5% in a diffused silicon pressure transmitter may trigger a chain reaction. Taking the DG1300-BZ-B series as an example, an uncalibrated sensor will produce a deviation of ±1.2MPa in steam flow monitoring, directly threatening pipeline safety. According to the requirements of the GB/T 17614.3-2015 standard, all pressure transmitters must undergo mandatory calibration every 6 months, and when using intelligent sensors such as HTJ-HTJ100, remote calibration can be achieved through the HART protocol.

II. Detailed Explanation of the 5-Step Standardized Calibration Process

Step 1: Pretreatment and Equipment Inspection

After disconnecting the process connection of the SK-DBS316E1ERC2L-2m pressure transmitter, a special cleaning agent is required to remove membrane residue. Check whether the G1/2 threaded connection of model PT124B-210 has mechanical damage, and at the same time confirm that the insulation resistance of the 24V power supply circuit of LD-108-3PBA793 is >100MΩ. Special note: the diffused silicon sensor must be kept in a vertical state during disassembly to prevent lateral force on sensitive components.

Step 2: Zero Point and Full-Scale Calibration

Use professional calibrators such as FLUKE 729 to apply standard pressures of 0% and 100% to KYB-800 (for example, a 1MPa range corresponds to 0MPa and 1MPa). When the displayed value deviation of HTJ-HTJ110 is >0.3%FS, adjustment is required through a potentiometer or communication software to ensure that the 0.1 accuracy grade requirement is met at an ambient temperature of 25℃. Key reminder: after calibration, three cycle tests must be carried out to verify repeatability.

III. Typical Fault Diagnosis and Handling

When SMP131-TLD-L105GS-D1-F-53-4G15 shows output signal fluctuations, first check whether the grounding loop is intact. For the pressure jump issue of HTJ-HTJ110, 80% of cases are caused by liquid accumulation in the pressure guide tube, which can be solved through heat tracing pipeline modification. The dedicated diagnostic tools for the DG1300 series provided by Xi'an Shenghongchuang can quickly identify overload damage of diffused silicon chips.

IV. Why Choose Our Calibration Services

As a high-tech enterprise in Xixian New Area, we have a CNAS-accredited calibration laboratory and can provide on-site calibration under complex working conditions for models such as KYB-800. All operators hold ISO/IEC 17025 certified qualifications and are equipped with professional devices such as the Rosemount 475 communicator. For imported models such as LD-108-3PBA793, we provide original factory-level calibration reports.

V. Extended Technical Q&A

Q: How can it be determined whether a diffused silicon sensor needs replacement?
A: When HTJ-HTJ100 still cannot meet the accuracy requirements after three calibrations, or when the zero-point drift is >0.5%FS/year, it is recommended to replace the core component.

Q: How is PT124B-210 calibrated in a low-temperature environment?
A: After stabilizing in a constant-temperature chamber for 4 hours, temperature compensation algorithms are required for calibration. For specific parameters, refer to the IEC 60770-1 standard.