『ABB quality flowmeter』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. What are the requirements for the front and rear straight pipe sections of ABBs mass flowmeter?
The default is the Coriolis mass flowmeter, and the thermal mass should still require a straight pipe section!!
2. Manufacturers of mass flow meters
I think the manufacturers of segmented mass flow meters are as follows:
1. ABB
2. Emerson
3. Honeywell
4. Siemens
5. Yokogawa
6. Acom
7. Fluke
8. Round burning liquid Leitai
9. Omron
10. Rosemount
3. Types of ABB flow meters
As a leading global instrument manufacturer, ABBs flow meter product line covers various measurement principles. The following are the main types and characteristics of flow meters. Differential pressure flow meters use Hongqing throttling devices (such as orifice plates and V-cones) to generate pressure difference for flow measurement, and are suitable for gas-liquid media in petroleum and chemical pipelines. The orifice plate structure is simple and cost-effective, but it has high pressure loss and requires a long straight pipe section; The V-cone has strong self rectification ability and high precision for small flow rates, but it needs to be calibrated regularly. The turbine flowmeter generates pulse signals through fluid driven turbine rotation, with an accuracy of ± 0.5% -1% and fast response. It is suitable for clean single-phase fluids such as aviation fuel and natural gas, but not resistant to particle wear and high viscosity media. The electromagnetic flowmeter is based on Faradays law of electromagnetic induction and measures the roundness of conductive fluids (such as sewage and acid-base liquids), without pressure loss and corrosion resistance, but
5 The Coriolis mass flowmeter directly measures mass flow rate with an accuracy of up to ± 0.1%, suitable for chemical raw material proportioning, food industry, and hydrogen high-pressure transportation. It has good adaptability to viscous or gas containing fluids. The float flowmeter measures flow rate by changing the position of the float in the conical tube, with low pressure loss, suitable for low flow rate gases or liquids (0.1-50 L/min), but the glass tube is fragile and not suitable for granular media. The thermal flowmeter uses the principle of thermal conduction to measure flow rate, suitable for small flow rates (0.01-25 m/s), has no moving parts, is corrosion-resistant, and is commonly used in semiconductor ultrapure water, bioreactors and other scenarios.
4. What is the reason for the large fluctuation displayed by the ABB electromagnetic flowmeter?
The flow display value jumps around, which may be due to the following reasons:
1. Incorrect installation position, incomplete pipe, or gas residing in the pipe system, rubber stopper or suction bubbles.
.2、 The irregular pulsating flow generated by reciprocating pumps and other components in the piping system.
3、 Liquids contain gases or bubbles.
4、 There are strong magnetic fields such as motors around, and there are stray currents on the pipeline.
5、
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