『Verification Regulations for Turbine Flowmeters』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)
What are the testing procedures for turbine flow meters?
The detection process of a turbine flowmeter generally includes the following steps:
1. Appearance inspection: Check whether the appearance of the turbine flowmeter is intact, whether there is damage, wear or corrosion, etc.
2. Preliminary testing: Without disassembling the turbine flowmeter, compare the paired signals or check the shape and amplitude of the original signal to ensure that the output of the flowmeter is normal.
3. Disassembly inspection: If the cause of the malfunction of the turbine flowmeter cannot be determined by preliminary testing, the flowmeter needs to be disassembled.
. During the disassembly process of the flowmeter, it is necessary to carefully record the position and status of each component, and check whether the components are damaged or ineffective. 4. Calibration testing: By installing the flowmeter on the calibration equipment and comparing the standard flow value with the flowmeter reading, the accuracy and precision of the flowmeter can be tested. 5. Sensitivity testing: Detect the flow sensitivity of the turbine flowmeter. By changing the fluid flow rate, the response of the turbine flowmeter is tested to determine its response speed and output stability.2. JJG Verification Regulations for Velocity Flowmeters
JJG 198-1994 Verification Regulations for Velocity Flowmeters has been replaced, and the current most important new standards are JJG 1029-200
7, JJG 1030-200
7, JJG 1033-2007, JJG 1037-2008 and other regulations.
. 1. Overview of the original regulation. Regulation name: JJG 198-1994 "Verification Regulation for Velocity Flowmeters" Implementation date: Decembe
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.
3. National standards for the installation of natural gas flow meters
The installation of natural gas flow meters must strictly follow national standards, with a focus on four scenarios: liquefied natural gas (LNG), turbine flow meters, orifice plates, and nozzles.
. 1. Liquefied Natural Gas (LNG) Fluid Specification (GB/T 44398-2024) applies to flow meters for liquefied natural gas and other refrigerated hydrocarbon fluids, with core requirements including calibration standards: Flow meters must be calibrated according to dynamic measurement characteristics; Installation environment:
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