Low temperature vortex flowmeter selection guide

Vortex flowmeter is a common instrument used to measure the flow of gas, liquid and steam. The use of vortex flowmeter under low temperature conditions requires special considerations for its performance and model. Therefore, the following points must be paid attention to:

1. Material selection. Low-temperature environments have high requirements on materials. Low-temperature embrittlement and cracking cannot occur, so stainless steel and other materials with low-temperature resistance should be selected.

2. Accuracy: The accuracy of the flow meter is an important parameter, especially in low temperature environments, because temperature changes may affect the accuracy of the measurement results. Therefore, it is necessary to have certain expectations for the degradation in low temperature environments. For example, the accuracy level required on site is 1.5%R. When selecting a flow meter, try to choose an accuracy level of 1%R to avoid bias in the accuracy of the flow meter due to temperature drops. Too low to meet site requirements.

3. Output signal: In low-temperature environments, the signal transmission speed may be affected. Try to choose a simple 4~20mA current output signal.

In short, when selecting a low-temperature vortex flowmeter, you must pay attention to the impact of temperature on the flowmeter. Factors that are less affected by temperature should be selected according to your needs. Factors that are greatly affected by low temperature should follow the advice of technicians.