Exploration of Strategies for Enhancing the Quality of Metrological Verification and Calibration
2026-09-28
.gtr-container-e3f4g5 {
font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif;
color: #333;
line-height: 1.6;
padding: 15px;
box-sizing: border-box;
}
.gtr-container-e3f4g5 p {
font-size: 14px;
margin-top: 10px;
margin-bottom: 10px;
text-align: left !important;
color: #444;
}
@media (min-width: 768px) {
.gtr-container-e3f4g5 {
padding: 20px 50px;
}
}
With the advancement of metrological technology, new types of weighing instruments—such as intelligent leveling instruments, dynamic vehicle scales, and unattended vehicle scales—have been progressively deployed. These devices exhibit more complex functionalities and application scenarios compared to traditional weighing instruments. For instance, intelligent leveling instruments feature capabilities such as coordinated leveling across multiple weighing pans and rapid dynamic measurement, whereas dynamic vehicle scales require weighing verification to be performed while the vehicle is in motion. The currently applicable verification standard for dynamic vehicle scales is JJG 907-2006, which can meet routine verification requirements; however, there are currently no unified national verification standards or calibration specifications for new types of equipment such as leveling instruments. Consequently, verification and calibration activities for such devices are primarily conducted based on corporate technical standards and general weighing instrument technical specifications. The existing standards designed for traditional weighing instruments are insufficient to fully address the specialized verification requirements of new weighing instruments. This gap results in a lack of standardized procedures for the verification and calibration of certain new weighing instruments, leading to calibration methods that lack specificity and making it difficult to guarantee the reliability of verification results.
View More
Understanding and Discussion on JJF 1025‑2025 Technical Requirements for Modification of Mechanical Scales
2026-09-27
.gtr-container-fgh789 {
font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif;
color: #333;
line-height: 1.6;
padding: 20px;
box-sizing: border-box;
}
.gtr-container-fgh789 p {
font-size: 14px;
margin-bottom: 1em;
text-align: left;
}
.gtr-container-fgh789 h2 {
font-size: 18px;
font-weight: bold;
color: #0000FF;
margin-top: 1.5em;
margin-bottom: 0.8em;
text-align: left;
}
@media (min-width: 768px) {
.gtr-container-fgh789 {
padding: 30px 50px;
}
}
JJF 1025‑2025, Technical Requirements for Modification of Mechanical Scales, is an important revision of the technical specification. It adds new technical requirements consistent with current engineering practices, tightens the selection requirements for weighing sensors and indicators, and introduces a compatibility verification checklist. Meanwhile, modified electromechanical combined scales are brought under type‑approval administration, and the mandatory binding force of technical clauses on metrological safety and measuring‑instrument marking is strengthened.
The comprehensive upgrade of these technical requirements marks that China has gradually built a regulatory system for mechanical‑scale modification adapted to the rule‑of‑law governance requirements of the new era. The implementation of this specification not only provides a technical basis for the modification of mechanical lever scales applied in special scenarios, but also offers institutional support for ensuring the product quality of electromechanical combined scales, safeguarding fairness in trade settlement and protecting consumers’ legitimate rights and interests.
View More
