Difference between PTFE flowmeter | Plastic turbine flowmeter and turbine flowmeter

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1. Does an electromagnetic flowmeter need to be lined with PTFE when measuring alkaline solution?

Not necessarily, it needs to be lined with PTFE. According to the concentration and pH value of the alkaline solution, rubber lining can be used for weak and low concentration alkalis, while PTFE lining is better for high concentration and highly corrosive alkalis.. You can consult Weinan and Shunda for details on selling hectares and returning.

2. Xuner Instrument | On site after-sales case of emulsion metering instrument for a cold-rolled plate in Zhangjiagang, Jiangsu

In the after-sales case of Xuner electromagnetic flowmeter for a cold-rolled plate in Zhangjiagang, Jiangsu, the cause of the failure was inaccurate measurement due to long-term high-temperature deformation of the rubber lining. After replacing the tetrafluoroethylene lining, the instrument resumed normal operation.

. The specific analysis of Hui Ku is as follows: Fault phenomenon: The Xuner brand electromagnetic flowmeter (caliber DN150) used by the customer has inaccurate measurement and occasional zeroing. Through ultrasonic measurement comparison, there is a significant deviation between the actual flow rate and the displayed value of the flow meter (such as 23m3/h displayed at an actual flow rate of 60m3/h and 160m3/h displayed at an actual flow rate of 190m3/h). Image: Comparison of on-site flow meter and ultrasonic measurement data. On site situation: Installation location: Carbon steel pipeline in basement, with sufficient front straight pipe section, elbow, front and rear variable diameter (DN200 reduced to DN150), rear valve, flow direction from right to left, flow meter installed lying down. Measurement medium: em PTFE flowmeter

ulsion, used to measure the total amount of emulsion during steel rolling in each workshop. Temperature conditions: The commonly used temperature on site is about 55 ° C, and the upper limit of the temperature resistance of the rubber lining is 60 ° C. Fault detection and analysis: Lining deformation: The rubber lining of the flowmeter replaced by the front end is severely deformed, the electrode is depressed, and long-term high temperature leads to a decrease in material properties. Figure: Verification of the influence of high-temperature deformation of rubber lining and electrode depression temperature: When the heating module is running, the flow meter displays a gradual increase in flow rate; After the temperature exceeds 55 ° C, the cooling plate starts and the flow rate decreases; After the cooling valve is closed, the flow rate rises again and stabilizes. This indicates that temperature fluctuations directly affect the measurement accuracy of the flowmeter, and the performance of the rubber lining is unstable at critical temperatures. Image: Flow meter display changes during heating/cooling module operation Solution: Replace the rubber lining with a higher temperature resistant PTFE lining to adapt to the long-term operating environment of 55 ° C on site. After replacement, the instrument measures accurately and runs stably. Figure: Summary of flow meter after replacing PTFE lining and discussion on building fluid: Selection key: Instrument procurement needs to comprehensively consider the characteristics of the medium, pipeline material, installation position, temperature range, and special requirements (such as temperature resistance and corrosion resistance). Rubber lining limitations: Suitable for scenarios w

Difference between PTFE flowmeter | Plastic turbine flowmeter and turbine flowmeter

1. Does an electromagnetic flowmeter need to be lined with PTFE when measuring alkaline solution?

2. Xuner Instrument | On site after-sales case of emulsion metering instrument for a cold-rolled plate in Zhangjiagang, Jiangsu

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