-
What are the common questions of ultrasonic flowmeter ?
1. The measurement of flow rate shows abnormal and huge data drastic change. Reason: Maybe Ultrasonic transducers are installed in the pipeline with big vibration or in the regulator valve, pump, downstream of the shrinkage hole; How to deal with：Installing the sensor should be far away from vi...Read more -
Transit-Time ultrasonic flowmeter portable, handheld and fixed between the advantages and disadva...
1) Measurement characteristics: portable and handheld flowmeter’s measurement performance is better. This is because portable and handheld flow meters use battery power supply, and stationary or wall mounted flow meter’s power supply use AC or DC power supply, even if the use of DC po...Read more -
How to install Lanry DF6100 series Doppler flow transducers ?
The premise of DF6100 series doppler flow meter’s work is the measured pipe must be full of liquids. In theory, doppler sensors need to be located the reference mounting positions of 3 and 9 o’clock. Two transducers called A and B transducer, A is transmitting transducer and B is receiving transd...Read more -
Why does transit time insertion sensors adopt Z method instead of V method?
There are four ways to install transit time ultrasonic sensors, V method and Z method are commonly used, and Z method is used to install transit time insertion sensors on site. This is mainly due to the insertion type sensors installation characteristics and Z method signal transmission mode. Whe...Read more -
Why should ultrasonic flowmeter sensors not be installed at the top or bottom of the pipe as much...
When measuring the flow of liquid, because the liquid contains a certain volume of gas, when the fluid pressure is lower than the saturated vapor pressure of the liquid, the gas will be released from the liquid to form bubbles accumulated in the upper part of the pipeline, the bubble has a great ...Read more -
What pipes and what medium Lanry brand insertion ultrasonic flow meter can measure ?
In general, insertion ultrasonic flow-meter doesn’t have special requirements for measured pipes. For weldable metal pipelines, insertion sensors can be weld directly into the pipe. For non-weldable pipework, it needs to be installed by hoop. What medium can be measured for Lanry brand ...Read more -
What are the common installation methods of transit time ultrasonic flow-meters transducers ?
For clamp on transit time ultrasonic flow-meter, V and Z method are recommended. Theoretically, when the pipe diameter is from 50mm to 200mm, We usually recommend you to use V method to install it. As for other pipe diameters, we suggest you use Z method to install it. If there exists some reas...Read more -
What are the differences between Lanry brand dual-channel ultrasonic flow meter and single-channe...
Take wall mounted type as an example 1. Their outlook is different 2. Their accuracy, resolution,sensitivity, repeatability are also different For Dual channel ultrasonic flow meter, its accuracy is ±0.5%, the resolution is 0.1mm/s, the repeatability is 0.15%, the sensitivity is 0.001m/s; Whereas...Read more -
What kind of pipes Lanry clamp on type ultrasonic flow meter can measure ?
Clamp on ultrasonic flow meter measures pipe material which must be uniform and homogeneous, such as HDPE, PE, PVC, carbon steel, stainless steel, aluminum, cast iron, copper, and other pipes. It can’t measure these pipes like fiberglass, asbestos, nodular cast iron and other similar pipes. It is...Read more -
Turndown ratio (R)
Ratio of common flow Q3 to minimum flow Q1. The flow characteristics of ultrasonic water meter are determined by Q1, Q2, Q3 and Q4, according to the common flow rate Q3 (to m3/h is the unit) and the ratio of Q3 to the minimum flow Q1. Q3 ranges from 1, 1.6, 2.5, 4, 6.3, 10, 16, 25, 40, 63, 100, ...Read more -
What is the difference between the reading accuracy of the flowmeter and the full scale accuracy?
The reading accuracy of the flowmeter is the maximum allowable value of the relative error of the meter, while the full range accuracy is the maximum allowable value of the reference error of the meter. For example, the full range of the flowmeter is 100m3/h, when the actual flow is 10 m3/h, if ...Read more -
What are the meaning of repeatability, linearity, basic error,additional error of flow meter?
1. What is repeatability of flowmeters? Repeatability refers to the consistency of results obtained from multiple measurements of the same measured quantity by the same operator using the same instrument in the same environment under normal and correct operation conditions. Repeatability indicate...Read more
Ultrasonic Flow Meters
20+ Years Manufacturing Experience
- info@lanry-instruments.com
- +86 21-67618991