How to set up vortex flow meter and secondary meter?

summary：How to set up vortex flow meter and quadratic meter? The information is provided to you by the excellent manufacturers of flowmeters and flowmeters. 1. If the current range on a vortex street nameplate is 3T/h, then the secondary meter will set the range (LFS) to 3. If the range on a vortex street nameplate is 7100m/h, then the secondary meter range ( LFS) I set it to 16.33 (7100*2.3/1000, the unit I want is T). That is. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is how to set up the vortex flowmeter meter and secondary meter? Article details. 1. If the current range on a vortex street nameplate is 3T/h, then the secondary meter will set the range (LFS) to 3. If a vortex street nameplate has a range of 7100m³/h, then I set the secondary meter range (LFS) to 16.33 (7100*2.3/1000, the unit I want is T). That is to say, I don't need to care about the d (density) item in the vortex street, and I don't even need to modify any parameters after the vortex street is installed on the pipeline, right? 2. If the range is set to 16.33 in the secondary table, you have to change the dip (the number of decimal points, the default is 3) to 2. As usual, change the number of decimal points from 3 to 2. For example, the original display shows 8.032, change it to 2. After 2 digits, it should display 8.03, but after this secondary table is changed, it displays 80.32, which is obviously wrong, I don't know what is going on. In addition, a 1T/h vortex flowmeter is now installed on a DN50 pipeline. Does it mean that the number of words that the vortex can travel in a day will not exceed 24T? The nameplate of a vortex flowmeter shows that the range is 7100m³/h, if I want both the vortex street and the secondary meter (flow calculator) to be displayed in tons, should I change the d (that is, the default density is 1000) in the vortex street setting menu? The measured steam flow temperature is 210 and the pressure is 0.5Mpa. I checked the table and found out that the density is 2.2 (I also asked others to set the density to 3.1664 for some reason? Which one is it? I can't tell whether it is superheated or saturated steam.) If you want to change it, put it here The density is set to 2.2, and the F.S (full scale) must be set to 15.6 tons (m=vp/1000, p is the density). But this way, the vortex street will not be displayed. The manufacturer said that their products are made according to our requirements. After leaving the factory, the parameters generally do not need to be modified. At the same time, they also said that if the vortex street is displayed in tons, the density and range must be changed to tons. If displayed in cubic meters, the density and full scale must be changed to cubic meters. Then according to my understanding, if you want to measure in cubic meters, you have to set d=1000, F.S=4100 (this is the default setting of the manufacturer, but I want the secondary meter to display in tons), and it should be in tons. If so, you have to set d=2.2, F.S=9 (the vortex street can be set in this way but always display 0.000); in addition, the manufacturer said that the vortex street is made according to our requirements. The parameters of the facade generally do not need to be modified. But I took a look at some vortex nameplates and the range is 7100m³/h, but some are 3T/h. But d in the menu (the density item is all 1000)? Should it be changed? 1. Except for the vortex flowmeter with density compensation function, other measurement results are in volume units (such as m3/h). For the flowmeter with automatic density compensation function, its density is automatically compensated and calculated, not manually set. .The density compensation of steam is generally divided into: saturated steam temperature compensationsaturated steam pressure compensationsuperheated steam temperature and pressure compensation. Therefore, those manufacturers who can say mass flow without compensation function set the density value to a fixed density setting. It is not a real and reliable actual value if it enters the flowmeter, or the density value is combined into the meter coefficient. 2. The matching setting of the flowmeter and the secondary meter: the correct method should be --- the range and unit of the two should be the same . For example, the range of the vortex flowmeter is 7100m³/h and 3T/h. Then the setting of the secondary meter should be the same as it. 3. The correct solution to your problem: the vortex flowmeter has been bought back, and the compensation function cannot be added to it. Add compensation equipment, and because your steam temperature is 210 and pressure is 0.5Mpa, it belongs to superheated steam. In order to obtain accurate mass flow of superheated steam, both temperature and pressure must be compensated at the same time, so thermal resistance and pressure transmitter should be installed. , and then introduce the three-way signals of temperaturepressureflow to the secondary meter (with temperature and pressure compensation function) at the same time for compensation calculation, in order to obtain accurate steam mass flow. PS: After talking for a long time, now enter the topic, if If you don’t want to add these devices, you just want to calculate the density roughly according to the steam temperature and pressure you measure. It’s very simple. Multiply the density value calculated by yourself by the range value (volume) of the vortex flowmeter, and the result is two The range of the secondary meter can be inserted. For example, the range of the vortex flowmeter is 0-1000m3/h, and the steam density is 3.18kg/m3, then the range of the secondary meter is set to 3180, and the unit is kg/h, that is Represents mass flow. Again PS: You mentioned it yourself"The steam temperature is 210 and the pressure is 0.5Mpa"If 0.5Mpa refers to the gauge pressure, then the steam density should be 2.77kg/m3, if it refers to the absolute pressure, then the steam density is about 2.30kg/m3, I don't know how you got 2.2, the table should be Check the superheated steam density table, there are national standards. The above is the whole content of this article, you are welcome to inquire about the flowmeter selection and quotation of our factory. 'How to set up vortex flow meter and secondary meter? 》

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