Precautions For Purchasing An Ultrasonic Flowmeter

Nov 23 , 2018

The correct selection of the ultrasonic flow meter can ensure the better use of the ultrasonic flowmeter. The type of ultrasonic flowmeter to be selected should be determined according to the physical and chemical properties of the fluid medium to be tested, so that the diameter, flow range, lining material, electrode material and output current of the ultrasonic flowmeter can be adapted to the properties of the fluid to be measured and flow measurement requirements.

1. Precision function check

Accuracy levels and functions are based on measurement requirements and usage scenarios to select instrument accuracy levels for cost-effectiveness. For example, in the case of trade settlement, product handover and energy measurement, the accuracy level should be higher, such as 1.0, 0.5, or higher; for process control, select different accuracy levels according to control requirements; It is to detect the process flow, no need to do precise control and measurement, you can choose a lower accuracy level, such as 1.5, 2.5, or even 4.0, then you can use a low cost plug-in flow meter.

2. Measurable medium

Measuring medium flow rate, meter range and caliber When measuring a general medium, the full flow rate of the ultrasonic flow meter can be selected within the range of 0.5-12 m/s of the measured medium flow rate, and the range is relatively wide. The meter specification (caliber) is not necessarily the same as the process pipe. It should be determined according to whether the flow range is measured or not within the flow rate range. That is, when the pipe flow rate is low and cannot meet the requirements of the flow meter or the measurement accuracy cannot be guaranteed at this flow rate. It is necessary to reduce the gauge diameter, thereby increasing the flow rate inside the tube and obtaining satisfactory measurement results.

Electromagnetic Flow Meter