Bend flow meter scale system scheduling and put into operation

Abstract: the bend flow meter scale system scheduling and operation of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Bend sensor installation requirements of bend sensor installed by welding method in measuring pipeline ninety degrees of corner, install state in principle can be arbitrary, the space that is in the bend sensors as orientation or direction of no strict requirements, overall. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the scheduling of bend flow meter scale system and put into operation the article details. • Bend sensor installation requirements of bend sensor installed by welding method in measuring pipeline ninety degrees of corner, install state in principle can be arbitrary, the space that is in the bend sensors as orientation or direction of no strict requirement, generally has the following four install state to choose from: low level switch level; Low positive pressure measurement in the vertical installation; Low positive pressure measurement in vertical installation; When any space. Above four state in bend sensor in principle can be used when installation, but for some of the measured medium, choose the appropriate installation condition, can greatly simplify the installation, debugging, and is of great benefit to improve the system measurement accuracy. So how to choose correct bend sensor installation status is very important. Embodied in the following several principles and methods: & bull; For bending tube sensor measuring general liquid medium, it can be installed in the form of any state, this is because the tube liquid pressure tube and almost in the same working conditions, regardless of the bend two pilot pressure sensor (under what kind of relative position The relationship between up and down) , I don't need to transfer and compensation of differential pressure transmitter, so bend sensor installation location has nothing to do with the accuracy of measurement system. • For the measurement of hot or cold water ( Refers to the pipe of liquid temperature and environmental temperature difference is bigger) System, if the bend sensor is not state transfer level installation is adopted, then bend sensor between the two pilot pressure exists, there will always be a height difference of the H due to the fluid pressure and liquid in the pipe main tube under different temperature conditions, its density has a certain difference, in order to improve the measure precision of the system, must be against the elevation difference and temperature difference in the cause of deviation of differential pressure transmitter to migrate. Under the migration amount available type calculation: & Delta; P= H（ ρ 1 - ρ 2) Among them: * g & Delta; P - - - the migration of differential pressure transmitter; H - - The difference in height between the pressure - two, ρ 1 - - Guide tube pressure, liquid density; ρ 2 - - - the pipe liquid density; g - - - specific gravity acceleration adopts the positive transfer and negative migration depends on pipe installation location and the pipe is hot or cold water to decide. Elbow flowmeter in using computer automatic migration compensation technology, according to the fixed height of H value and the measured temperature real-time calculation of pressure pipe and pipe main fluid density difference, directly from the differential pressure transmitter to measure to eliminate the error of differential pressure differential pressure value. • Measuring steam or other non-condensable gas of bend sensor installation, the installation of the main consideration here is the medium will condense into liquid at room temperature, which guide the pressure tube zui will be filled with liquid. So when not bend sensor adopts horizontal turning horizontal installation state, must be in by the two lead the pressure difference caused by fluid column pressure tube to migrate the elevation difference compensation. This is to ensure that the measurement precision of migration compensation system accuracy is one of the important conditions of zui. As a result of the process piping within the medium density is small ( Because they are steam, gas) Medium density is very big, and guide the pressure tube ( They are liquid state) , these two kinds of medium density differs greatly, so the differential pressure transmitter migration amount is relatively large, the bent pipe sensor is a kind of low differential pressure sensor, within the scope of the work it will have the differential value is small, then how to ensure the accuracy of the differential pressure transmitter migration is very important. • As much as possible in order to avoid the occurrence of improper migration caused additional measurement error, when measuring the dielectric suggested the following technical measures were taken. In the bend of pressure sensor shall be equipped with disc condenser, to ensure that the pilot pressure stable condensate liquid surface; • As long as the conditions permit, bend, sensillum zui good level switch installation method, make the two bend sensor pressure mouth at the same horizontal plane, fundamentally eliminate the need to compensate for differential pressure transmitter migration of trouble; • Because the two lead bend sensor pressure in both sides of the pipe, so if you want to accurately guarantee two disc condenser and the pressure at the same horizontal plane is not easy, we are here to provide a simple measuring method for users to install as a reference, As shown in figure 5) 。 Take a sufficiently long transparent plastic tube filling with water, keeping the plastic pipe ends in bend on both sides of the two pressure mouth, use plastic pipe on both ends of the visible level of tube liquid level adjust the height of the disc condenser carefully, can easily make two disc condenser in the same horizontal plane.

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