I. Introduction

II. Automated Calibration Technology

1. Composition of the Automated Calibration System

• The automated calibration system usually consists of a pressure source, a standard pressure gauge, a calibrated pressure gauge, a data acquisition module and control software, etc. The pressure source can output accurate pressure values according to a preset program, the standard pressure gauge is used to provide an accurate pressure reference, the data acquisition module is responsible for collecting the indicated values of the calibrated pressure gauge and the standard pressure gauge, and the control software realizes the automatic control and data processing of the entire calibration process.

2. Working Principle and Advantages

• Working principle: By setting the calibration parameters such as pressure range and calibration points through the control software, the system automatically controls the pressure source to output the corresponding pressure, and simultaneously collects the readings of the standard pressure gauge and the calibrated pressure gauge. Then, according to the preset algorithm, the error is automatically calculated and a calibration report is generated.

• Advantages: Automated calibration technology greatly improves the calibration efficiency and reduces the errors caused by manual operations. It can achieve fast and accurate multi-point calibration and can calibrate a large number of pressure gauges in batches. At the same time, the recording and processing of calibration data are more convenient, which is convenient for subsequent data analysis and management.

III. Digital Measurement Technology

1. Application of Digital Pressure Sensors

• Digital pressure sensors are gradually replacing traditional analog sensors in pressure gauge calibration. It directly converts the pressure signal into a digital signal output, with higher measurement accuracy and stability. The digital pressure sensor can be directly connected to a computer and other devices to realize real-time data transmission and processing.

2. Data Processing and Analysis

• Under the digital measurement technology, the calibration data can be processed and analyzed more complexly through computer software. For example, using algorithms such as the least square method to fit the data to more accurately determine the error curve and correction coefficient of the pressure gauge. Data analysis software can also be used to perform statistical analysis on the calibration data to evaluate the performance and quality of the pressure gauge.

IV. Remote Calibration Technology

1. Realization Method of Remote Calibration

• Remote calibration technology realizes the remote calibration and monitoring of pressure gauges by means of network communication technology. By installing sensors and communication modules on the calibrated pressure gauge, the pressure data is transmitted in real time to the remote calibration center. The calibration personnel can remotely control the pressure source, perform the calibration operation, and obtain the calibration result.

2. Application Scenarios and Advantages

• Application scenarios: It is suitable for some pressure gauges distributed in different locations and difficult to be calibrated centrally, such as multiple branches of large enterprises and equipment in remote areas. At the same time, for some occasions with high real-time requirements, such as the pressure gauge monitoring in the continuous production process, remote calibration also has great advantages.

• Advantages: Remote calibration saves manpower and material costs and improves the timeliness and flexibility of calibration. It can realize the calibration of pressure gauges anytime and anywhere, reduce the equipment downtime and improve the production efficiency. At the same time, remote calibration can also realize the centralized management and monitoring of a large number of pressure gauges and improve the level of quality management.

V. Conclusion