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 this case, it is necessary to use a time difference ultrasonic flowmeter to estimate Measure the speed of sound.
1) M11-M16 menu sets the correct pipeline parameters;
2) M23 selects the sensor type, M24 selects the sensor installation method;
3) In the M20 menu fluid type menu, select “others”, enter 1482 in the M21 fluid sound velocity, and keep the default value of 1.0038 in the M22 menu;
4) Install the sensor according to the installation distance prompted by M25, then enter the M90 menu, adjust the sensor spacing to maximize the S value and Q value, and stabilize.
5) Enter the M92 menu to record the meter to estimate the speed of sound, and enter this value into the M21 menu.
6) Repeat steps 4-5 until the estimated sound velocity displayed in the M92 menu is similar to the sound velocity input in the M21 menu, then the estimation of the sound velocity of the special chemical medium is completed, and then the flow measurement of the special chemical medium can be started.
Post time: Sep-30-2021