As a key device in industrial automation control, the precise calibration of the SK-DBS316E1ERC2L-2m pressure transmitter is directly related to the measurement accuracy of the system. This article provides operators with a detailed analysis of professional calibration methods for diffused silicon liquid and gas pressure sensors, covering the calibration essentials and troubleshooting techniques for common models such as KYB-800 and HTJ-HTJ110, helping you master the standardized operating procedures used by engineers.

Technical Principles and Calibration Significance of Diffused Silicon Pressure Sensors

Diffused silicon pressure sensors operate based on the piezoresistive effect. When external pressure acts on the silicon diaphragm, its resistance value changes accordingly. Models such as SK-DBS316E1ERC2L-2m adopt advanced MEMS technology and convert pressure signals into electrical signal output through a Wheatstone bridge. The calibration process must strictly follow JJG 882-2019 "Pressure Transmitter Verification Regulation" to ensure that the measurement error is controlled within ±0.1%FS. For liquid medium sensors such as HTJ-HTJ100, the influence of medium density and temperature compensation coefficients must also be considered.

Detailed Explanation of the Standardized Calibration Process

Before calibration, it is necessary to prepare a 0.05-grade standard pressure source, a 24V DC regulated power supply, and a high-precision digital multimeter. Taking the DG1300-BZ-B-2-10-CJ-AE model as an example, the specific steps include: 1) Zero calibration: adjust the ZERO potentiometer under no-load conditions to make the output 4mA; 2) Full-scale calibration: apply a standard pressure of 10MPa and adjust the SPAN potentiometer until the output is 20mA; 3) Linearity verification: perform ascending and descending tests at 25%, 50%, and 75% range points. For small-range models such as PT124B-210-1MPa-G1/2, special care must be taken to avoid pressure overshoot damaging the sensor chip.

Common Fault Diagnosis and Handling

According to maintenance data for NS-I pressure transmitters, 80% of faults are caused by wiring errors or power supply issues. When output drift occurs in a KYB-800 sensor, the following should be checked in order: 1) whether the supply voltage is stable at 24VDC±10%; 2) whether the signal line uses a twisted shielded cable; 3) whether the grounding resistance is less than 4Ω. For the no-output condition of the HTJ-HTJ110 sensor, a multimeter can be used to measure the bridge impedance (normal value is about 3-6kΩ) to determine whether the chip is damaged. If the LD-108-3PBA793 model shows abnormal display, it is recommended to restore the factory settings first and then recalibrate.

Accuracy Class and Selection Guide

When purchasing, special attention should be paid to medium compatibility (for example, corrosive liquids require a 316L diaphragm), explosion-proof rating (Ex ia IIC T6 Ga grade), and protection parameters such as IP68. For HTJ series used in food industry applications, it is recommended to choose models with FDA certification.

Why Choose Shenghongchuang Instruments

As a national high-tech enterprise, we hold 18 patents related to pressure sensors, and all products have passed CE and RoHS certification. We provide free technical training for models such as KYB-800 and promise a 72-hour fault response service. For precision sensors such as SK-DBS316E1ERC2L-2m, third-party inspection reports and a five-year warranty can be provided. Contact our engineering team now to obtain customized solutions.