-
How to avoid lightning strikes during the use of our instruments?
Do a good job in the grounding of the host and the sensor: the host is grounded: the host shell is grounded and connected to the earth. Sensor grounding: The insertion sensor can be connected to the pipeline and some facilities that can be grounded with a insertion stainless steel housing.Read more -
Why the clamp-on ultrasonic flowmeter sensor may not be used well in occasions where IP68 is requ...
When the external clamp sensor is installed, the coupling agent is used to couple the sensor and the pipe, but when working in an IP68 environment, the sensor and couplant are both immersed in water, and the couplant works in water for a long time, which affects the measurement effect of the exte...Read more -
Why does the industry use 4-20mA signals instead of 0-20mA signals?
The most widely used standard analog electrical signal in the industry is to use 4-20mA DC current to transmit the analog. The reason for using the current signal is that it is not easy to be interfered, and the internal resistance of the current source is infinite, and the resistance of the wire...Read more -
What is requirement for straight pipe length when installing a transit-time or Doppler flowmeter?
Ultrasonic flow meters require fully developed flow conditions to ensure the meter will perform as specified. There are two basic types of measuring principles, Doppler and Transit Time. Both do require adhering to basic installation guidelines to minimize errors caused ...Read more -
What is Q1, Q2, Q3, Q4 and R for ultrasonic water meter
Q1 Minimum flow rate Q2 Transitional flow rate Q3 Permanent flow rate (working flow) Q4 Overload flow rate Make sure that the maximum flow that will pass through the meter never exceeds Q3. Most water meters have a minimum flow (Q1), below which they cannot provide an accurate reading. If ...Read more -
What issues should be paid attention to during the installation of high-temperature media?
The external clamp sensor measures the upper limit of high temperature 250℃, and the plug-in sensor measures the upper limit of 160℃. During the installation of the sensor, please pay attention to: 1) Wear high-temperature protective gloves and do not touch the pipe with your hands; 2) Use high t...Read more -
How does the time difference ultrasonic flowmeter measure special chemical media?
When measuring special chemical media, since there is no option for special chemical fluid types in the host, it is necessary to manually input the sound velocity of the special chemical medium. However, it is generally difficult to obtain the sound velocity of the special chemical medium. In thi...Read more -
How to choose a suitable location of partially filled pipe?
A typical installation is in a pipe or culvert with diameters between 150mm and 2000 mm. The Ultraflow QSD 6537 should be located near the downstream end of a straight and clean culvert, where non-turbulent flow conditions are maximised. The mounting should ensure the un...Read more -
Insertion Transducer On-Line Quick Install Instruction–For General Insertion Transducers
Insertion Transducer Installation Manual 1. Locate the Installing Point on Pipe 2. Weld Mounting Base 3. Place the Gasket Ring PTFE Gasket ring o...Read more -
Working principle and application of Doppler flow meter
Doppler ultrasonic flowmeter uses the physics of the Doppler effect, in any liquid flow in the presence of discontinuity will be reflected ultrasonic signal frequency shift (that is, signal phase difference), by measuring the phase difference, the flow rate can be measur...Read more -
The principle and application of transit-time ultrasonic flow meter?
A transit-time difference type ultrasonic flowmeter is measured using A pair of transducers (sensors A and B in the figure below), which alternately (or simultaneously) transmit and receive ultrasonic waves. The signal travels faster upstream than upstream in the fluid, ...Read more -
What is difference between reading accuracy and FS accuracy of the flow meter?
The reading accuracy of the flowmeter is the maximum allowable value of the relative error of the instrument, while the full scale accuracy is the maximum allowable value of the reference error of the instrument. For example, the full range of the flowmeter is 100m3/h, when the actual flow is 10...Read more
Ultrasonic Flow Meters
20+ Years Manufacturing Experience
- info@lanry-instruments.com
- +86 21-67618991