Portable ultrasonic flowmeter is a commonly used flow meter product. It adopts multi-pulse technology, signal digital processing technology and error correction technology to measure data more accurately. Portable ultrasonic flowmeter standard configuration: host, sensor, ultrasonic special cable, power adapter, high-strength protective box, tensioner, data cable, manual, ultrasonic special couplant.
Solutions to Common Problems of Clamp-on Ultrasonic Flowmeters:
1. When the ultrasonic flowmeter probe is used for a period of time, there will be irregular alarms. Especially when there are many impurities in the conveying medium, this problem will be more common. Solution: Clean the probe regularly (it is recommended to clean it once a year).
2. When the conveying medium of the ultrasonic flowmeter contains liquid impurities such as water, the pressure pipe of the flowmeter is prone to accumulate liquid, and the pressure pipe will freeze and block when the temperature is low, especially in winter. Solution: Purge the pressure pipe or power on the heat tracing
3. The ultrasonic flowmeter has very strict requirements on the pipeline, and there can be no abnormal noise, otherwise it will affect the measurement error greatly. During the propagation of the ultrasonic wave, its strength will be attenuated due to the obstruction or absorption of the medium and impurities in the medium. Whether it is an ultrasonic flowmeter or an ultrasonic level meter, there are certain requirements for the received sound wave intensity, so various attenuations must be suppressed.
4. Does the instantaneous flow fluctuate greatly?
The signal strength is large, and the measurement fluid itself fluctuates greatly.
Solution: adjust the position of the probe, improve the signal strength, and ensure the stability of the signal strength. If the fluid itself fluctuates greatly, the position is not good. Re-select the point to ensure the working conditions of the first 5D and the later 3D.
5. Occasionally there are bubbles in the measurement medium. Is the ultrasonic flowmeter using the time difference method affected? The clamp-on ultrasonic flowmeter has dual modes. When there are bubbles, it can automatically switch to the Doppler mode to measure, and when the bubble disappears, it will automatically switch to the time difference method.
6. The instrument cannot be used under strong disturbance on site?
There is a frequency converter or high-voltage cable field strength electromagnetic interference on site
Recommendation: Keep away from the electromagnetic interference of the frequency converter or the high voltage cable field strength