『Flow Meter Calibration Regulations』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. JJG Speed Flow Meter Calibration Regulations JJG 198-1994 Speed Flow Meter Calibration Regulations have been replaced, and the current most important new standards are JJG 1029-200, JJG 1030-200, JJG 1033-2007, and JJG 1037-2008. 1. Overview of the original regulation. Regulation name: JJG 198-1994 "Verification Regulation for Velocity Flowmeters" Implementation date: December 1, 1994. Centralized and drafting units: China Academy of Metrology and Kaifeng Instrument Factory. Scope of application: Verification of velocity flow meters for newly manufactured, used, and repaired liquids and gases (including dry saturated vapor).
2. Current replacement standards. The original regulation has been divided into multiple subdivision technical standards, and the specific substitution relationship is as follows: • JJG 1029-2007: Verification Regulation for Vortex Flowmeters • JJG 1030-2007: Verification Regulation for Ultrasonic Flowmeters • JJG 1033-2007: Verification Regulation for Electromagnetic Flowmeters • JJG 1037-2008: Verification Regulation for Turbine Flowmeters. Regulations only cover brother 3 Applicable scenarios: Current standards correspond to different working principles of flow meters: • Liquid media: applicable for calibration of flow meters such as turbines and electromagnetic; • Gas media: applicable for calibration of flow meters such as vortex street and ultrasonic; • Special media: Saturated vapor measuring instruments need to be calibrated according to specific regulations.
2. Verification Regulations for Portable Open Channel Flowmeters
The core requirements of the Verification Regulations for Portable Open Channel Flowmeters by Liquid Side can be summarized into three major sec
1. Scope of application: Applicable equipment: covering common types of open channel flow meters such as ultrasonic flow meters, turbine flow meters, electromagnetic flow meters, etc., compatible with multi principle equipment such as weir method, hydraulic structure method, gradient method, radar flow measurement method and Doppler effect method.
.II. Verification Basis 1 Core standard: Adopt JJG 711-1990 "Open Channel Weir Channel Flow Meter" to clarify equipment technical requirements and calibration process. two Supporting standards for Qixiang include a series of environmental protection industry standards (such as HJ 353-201
9, HJ 354-2019, etc.), covering the technical specifications for the installation, acceptance, and operation of flow monitoring units throughout the entire process.
III. Verification Conditions 1 Environmental requirements - Temperature: Conventional 5-35 ℃, some scenarios can be extended to -25-+70 ℃. -Humidity burial: Conventional ≤ 80% RH, some equipment can tolerate 5-100% RH. Avoid magnetic field interference, severe vibration, and strong airflow interference, and keep the measurement pipeline unobstructed. two Equipment preparation - basic tools: timer, pressure gauge, thermometer. -Calibration device: equipped with specialized calibration equipment such as standard weirs and ultrasonic flow meters, and fill in the calibration record form in a standardized manner.
3. Verification Regulations for Differential Pressure Flowmeters hj640-2016
Core Conclusion: JJG 640-2016 "Verification Regulations for Differential Pressure Flowmeters" is an aut
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