N12 流量与物位仪表 标准查询与下载

JB/T 13753-2021 平衡热量表

balance heat meter

ISO 3716:2021 液体比重测定法. 悬浮-沉淀取样器的功能要求和特点

This document specifies the functional requirements and characteristics of the different types of suspended-sediment samplers used for collecting water-sediment mixtures from streams, rivers, lakes and reservoirs. This document does not include equipment for collecting samples in closed conduits and wastewater discharges. NOTE The units of measurement used in this document are SI units.

Hydrometry - Functional requirements and characteristics of suspended-sediment samplers

ISO 24578:2021 液体比重测定法. 声学多普勒流速剖面仪. 移动船测量明渠中流量的计量方法和应用

This document gives guidelines for the use of boat-mounted acoustic Doppler current profilers (ADCPs) for determining flow in open channels. It describes a number of methods of deploying ADCPs to determine flow. Although, in some cases, these measurements are intended to determine the stagedischarge relationship of a gauging station, this document deals only with single determination of discharge. ADCPs can be used to measure a variety of parameters, such as current or stream flow, water velocity fields, and channel bathymetry. As a potential application, an idea of bedload discharge can be obtained applying the bottom track velocity, while suspended sediment flow can be obtained applying the acoustic backscatter and the sonar equation. This document is generic in form and contains no operational details specific to particular ADCP makes and models.

Hydrometry - Acoustic Doppler profiler - Method and application for measurement of flow in open channels from a moving boat

DB11/T 1768-2020 建筑水表配置规范

Building water meter configuration specification

ISO/TS 21354:2020 多相流体流量的测量

Measurement of multiphase fluid flow

T/CGAS 006-2019 基于窄带物联网（NB-IoT）技术的燃气智能抄表系统

 本标准规定了基于窄带物联网（NB-IoT）技术的燃气智能抄表系统（以下简称系统）的术语和定义、缩略语、系统和原理、技术要求、试验方法、检验规则等。 本标准适用于采用NB-IoT技术进行通信的民用燃气智能抄表系统的设计、建设及检验。 注：民用含居民用户和一般商业用户。  

Gas smart reading meter system based on NB-IoT technology

DB31/T 1148-2019 水量计量差错的退补水量核算方法

Calculation Method of Refund and Supplement Water Quantity for Mistakes in Water Quantity Measurement

DB31/T 1149-2019 燃气计量差错的退补气量核算方法

Calculation Method of Refund and Compensation Gas Quantity for Gas Metering Error

BS EN 14236:2018 超声波家用燃气表

Ultrasonic domestic gas meters

JB/T 13567-2018 热式质量燃气表

Thermal mass gas meter

JB/T 13518-2018 高压加热器用三通阀

Three-way valve for high pressure heater

T/CMA-RQ 001-2018 膜式燃气表膜片

Membrane Gas Meter Diaphragm

T/CMARQ 002-2018 膜式燃气表阀盖与阀座

Diaphragm gas meter valve cover and valve seat

T/CMA-RQ 002-2018 膜式燃气表阀盖与阀座

Diaphragm gas meter valve cover and valve seat

JB/T 13390-2018 红外线扫描测温仪

Infrared scanning thermometer

DB50/T 826-2017 液位计通用技术要求

本标准适用于磁浮子液位计、浮球液位计、电接点液位计、电容物位计、电动浮筒液位计、玻璃管液位计、脉冲雷达物位计、高能声波物位计、导波雷达物位计、超声波物位计、外贴超声波液位计和智能伺服液位计

General technical requirements for liquid level gauges

ISO 9123:2017 水文测量.水位、落差、流量的关系

This document specifies methods for determining stage-fall-discharge relationships for a stream reach where variable backwater occurs either intermittently or continuously. Two gauging stations, a base reference gauge and an auxiliary gauge are required for gauge height measurements. A number of discharge measurements are required in order to calibrate the rating to the accuracy required by this document. The preparation of rating curves is not described in detail in this document. NOTE For a more detailed description of preparing rating curves, see the methods described in ISO 1100-2.

Hydrometry - Stage-fall-discharge relationships

BS ISO 1438:2017 水文测量 使用薄板堰进行明渠流量测量

Hydrometry. Open channel flow measurement using thin-plate weirs

JB/T 13111-2017 热式质量流量传感器

Thermal mass flow sensor

JB/T 13252-2017 微波（雷达）物位计

Microwave (radar) level meter