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    The company's main flow meter, level meter, and pressure controller, temperature controller, analytical instruments and other various types of instrumentation. To solve all kinds of problems, and provide complete sales service for customers with professional technical point of view.
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A wet gas flowmeter is better

Date:2019-11-07 source:

Wet type gas flowmeter which good, want to choose flowmeter appropriately reasonable, in addition to want to understand the hydrodynamics characteristic of instrument panel and accurate measure, still should consider economic development element additionally.There will be a variety of planning options for the dashboards available for a given site, and selecting a dashboard based solely on past work experience, or making a decision based on a single factor, will result in a loss of the best fit.However, it is not easy to integrate such elements and clearly come up with an optimal plan.Below the jiangsu province guangzhou Evergrande dashboard to everyone a few work experience, for everyone in the selection of traffic timing reference.

QQ截图20191107140854.jpg

1. Accuracy: accuracy is a key index of a total flow detection instrument, and is also a key index that is easy to be ignored in the whole process of the selection table.It is easy to forget that the customer did not take the manufacturer's stated accuracy into account when selecting the table.For the accuracy of the manufacturer's label of a table, table selection need to be carried out a further consideration.

2. The percentage of deviation is the deviation of the guide (the percentage of accurate measurement of the upper limit or measurement range) or the relative error.In addition, changes in temperature, working pressure, and natural environment standards applied on the spot create additional deviations.The selection of the flowmeter should require the comprehensive system error, not the feudal superstition of a single accuracy index.

3. Whether the accuracy level indicated by the manufacturer is reasonable.Some manufacturers put the insertion type vortex street, pressurization, venturi and other control points to measure the flow rate of the insertion type instrument panel as ±1% or ±1.5%.It is obvious that it is not reasonable to extend the precision of the velocity measurement inserted into the head to the excessive exaggeration of the accuracy of the flow measurement.

4. The selection of flow timing to require its comprehensive system error, rather than the feudal superstition of a single accuracy index.For example, how much is the accuracy of a flowmeter with 1% gas calibration in factory setting for accurate steam measurement?Is no way to respond to the problem, the choice of different manufacturers of the table, the result will be quite different.The key problem lies in the measurement of the relative density of steam from manufacturers and a variety of flowmeters are quite different, some flowmeters even do not have a difference between superheated steam and saturated steam, the two together, it will not be able to talk about the accuracy.

5. Category degree: generally, the detection range of a total flow meter refers to the ratio between the large total instantaneous flow rate and the minimum total instantaneous flow rate accurately measured by the meter on the premise of ensuring accuracy.Some manufacturers express their breadth of scope by saying very high in the index that the CMC members limit the velocity of total flow.If the liquid velocity refers to 5 ~ 10m/s and the vapor velocity to 35 ~ 75m/s, in fact, such a high velocity is generally useless.The key to the wide range of flow measurement is to have a lower low limit velocity to blend in with the actual precise measurement on the spot.Therefore, the flowmeter with a wide range of low limiting velocity is useful.It is proposed to select the category degree of carryover flowmeter with the liquid flow rate of 5m/s and the vapor flow rate of 35m/s as limits.

6. Work stress damage, traffic detection instrument, permanent job stress is a very important indicator of the permanent work stress damage (can't repair the loss of pressure is too large to produce immediate impact is the luxury of drive and electric energy waste, pressure loss of the comprehensive indexes will be selected in the middle of the 2-30 kpa, can consider off most of the provisions of the industrial production on the spot.


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