T/HNJX 0018-2025 Active Group standards

T/HNJX 0018-2025 Photonic Sand Testing Machine

Publish Date: 2025-01-22 Implement Date: 2025-02-21 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/HNJX 0018-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Geology, meteorology, and hydrology

Publish Date: 2025-01-22

Implement Date: 2025-02-21

Scope

Scope: This document specifies the working principle, structural components, technical requirements, test methods, inspection rules, marking and user's manual, packaging, transportation, storage, and installation and maintenance of photoelectric sand measuring instruments. This document is applicable to the measurement of suspended sediment concentration in various natural liquid water bodies such as rivers, lakes, reservoirs, and canals. The measurement of suspended sediment concentration in other scenarios can be carried out with reference to this document. Main technical content: 6.3.5 Measuring range and resolution: The measuring range and resolution can be tested under laboratory conditions corresponding to the required sediment concentration. Measuring range test: a) The configured sediment concentration should meet the maximum measuring range requirement; b) After powering on the photoelectric sand measuring instrument for 1 hour, take the monitoring value and repeat it three times. The test results should meet the maximum measuring range requirement. Resolution test: a) Configure the sediment concentration corresponding to the minimum resolution; b) After powering on the photoelectric sand measuring instrument for 1 hour, take the monitoring value and repeat it three times. The test results should meet the resolution requirement.