Use method of ultrasonic flowmeter

At present, two kinds of ultrasonic electromagnetic wave flowmeters are generally selected, one is multispectral ultrasonic electromagnetic wave flowmeter, and the other is time-difference ultrasonic electromagnetic wave flowmeter.Doppler flow type is using the method of phase difference measurement, namely that know their frequency of fitness in the fluid mechanics, acoustic frequency, because the liquid itself have a fitness movement rate caused by ultrasonic wave in the middle of the two signal receiver (or signal transmitters) frequency or location relativity transformation, according to the measurement of the relative shift can be liquid rate;Time difference refers to the measurement of water flow by the method of time difference, that is, the frequency of sound waves at a certain rate causes a change in the propagation time between two signal receivers (or signal transmitters) due to the hydrodynamic fluidity. According to the measurement of this relativistic change, the hydrodynamic water flow can be obtained.

The installation method of ultrasonic wave flowmeter is introduced: three installation methods are generally selected at the present stage :W type, V type, Z type.According to different pipe diameter, and the characteristics of the fluid mechanics to select installation method, general W type suitable for small diameter (25 to 75 mm), v-shaped used in pipe diameter (25 to 250 mm), Z for big diameter (250 mm), in other words, in order to improve measurement accuracy and sensitivity, choose suitable installation method, prompting measurement signal (error) and secondary instrument panel.

Use method of ultrasonic flowmeter

In order to ensure the measurement accuracy of the instrument panel, a certain standard site should be selected for accurate positioning: generally, the upstream and downstream 10D, the middle and downstream 5D or so connection section;Pump, valve and other oscillating machinery and equipment shall not be installed within 30D of upstream and downstream.

Ultrasonic flowmeter method of the installation of cameras: actually choose "coordinate installation method", namely the first line outside clean metal surface treatment, coated with special coupling agent, the first fixed in one of the cameras, tape around the pipe, measure the diameter be folded logo, another camera tracks at 1/2 diameter clear parts, as well as the tracks with a pivot parallel surface line, and then according to the installation of the dashboard display information spacing, clear the relativity of two cameras on the track spacing, ensure that the ultrasonic have sufficient signal strength, general led on the control panel shows the signal strength of more than 2% of information,The read-to-read value displays stable information, indicating that the installation and adjustment have been completed and the instrument panel can work normally.

Operational guidelines for school official cites use

1) under the general metrological verification method, the main display information interface (upper section) is constant display of the total standard flow, while the secondary display information interface (lower section) is each pass

4 seconds or so automatic conversion display information instantaneous speed standard condition total flow, instantaneous speed load total flow, applied working pressure and temperature value.

2) there are three function keys on the reverse side of the information department, which can be used for metrological verification mode and metrological verification mode.3) please use as-scq operator to set the main parameters.

3) please use as-scq operator to set the main parameters.

Porcelain city Shanghai instruments co., LTD. Is China's first tiny elliptical gear manufacturers, by MrStone (Siemens) senior engineers involved research and development, with independent intellectual property rights, completely using Siemens CNC processing center production and processing equipment, to ensure the minimum flow rate of 0.1 ml/min, which is rare in the world, the precision is over 90%.