6 Aisite Instrument belongs to Aisite Instrument (Shanghai) Co., Ltd. and is one of the leading brands of ultrasonic flow meters and heat meters in China. It is particularly strong in the field of heating metering, focusing on ultrasonic measurement technology. 7. Beite Intelligent Instrument belongs to Suzhou Beite Intelligent Instrument Co., Ltd. and is an automation instrument manufacturer that integrates research and development, design, manufacturing, sales, and system services. In 2018, it joined the FCG Foundation and became a member of the global HART Foundation. 9. Tuosite belongs to Taian Tuosite Instrument Co., Ltd. It is a high-tech enterprise specializing in the production of flow meters and their supporting equipment, and has introduced advanced instrument manufacturing technology from Germany. 10. Krohne belongs to Jiangsu Ruiling Automation Instrument Co., Ltd. Its Krohne vortex flowmeter is a high-precision flow measurement device widely used in the industrial field.
The main reasons for the large fluctuations of Elster ultrasonic flowmeter are as follows
1. Installation problem • Insufficient straight pipe section: The installation position does not meet the requirements of the first 15D and last 5D (D is the diameter of the pipeline), resulting in unstable fluid.
. Uneven flange surface: The connecting flange has burrs or unevenness, which can cause measurement fluctuations at high flow rates. • Installation is not standardized: the position or pipeline size is not selected according to the manufacturers requirements, and the length of the inlet and outlet sections does not match2. External interference • Pipeline vibration: mechanical vibration interference signal, which can be checked by observing whether the output fluctuates when there is no flow. Strong interference source: nearby high-power devices (such as frequency converters) affect signal acquisition. • Environmental changes: Temperature fluctuati