Abstract: the scale of the vortex precession
flowmeter installation and matters needing attention of information produced by excellent
flow meter, flow meter manufacturer to offer you the quotation.
In order to make the precession vortex flowmeter can work in normal state, the installation personnel must understand on the instrument of the concrete structure, characteristics and traffic signal conversion, understand the role of each link in the process of signal transmission, according to the product manual for installation.
More flow meter manufacturers choose model price quote you are welcome to inquire, here is the scale of the vortex precession flowmeter installation and note the article details.
In order to make the precession vortex flowmeter can work in normal state, the installation personnel must understand on the instrument of the concrete structure, characteristics and traffic signal conversion, understand the role of each link in the process of signal transmission, according to the product manual for installation.
In general precession vortex flowmeter installation using the following points should be paid attention to.
1)
Choose reasonable installation site.
The installation site should avoid strong electric power equipment, high frequency equipment, strong power switch;
Avoid high temperature heat source and radiation of heat;
Avoid high temperature and strong corrosive atmosphere influence: avoid strong vibration and installation, wiring, maintenance party then.
In the upstream and downstream sensors, must eliminate the long pipeline vibration generated by moving.
2)
General requirement level installation, by the flow of current body should be consistent with refers to the flow arrow on the shell.
Can be installed vertical or inclined.
When measuring the liquid should be sure sensor is completely filled with liquid.
In order to does not affect the normal fluid loss, maintenance Suggestions in the installation of the instrument and add bypass.
3)
Precession vortex flowmeter with low requirement for straight pipe before and after, in principle allow don't need a straight pipe before and after the meter, but general requirements before the instrument has 3 d length of straight pipe, instrument after 1 d length of straight pipe.
Special circumstances require 5 d and 3 d length.
When a single or double bend bend pipe bending radius is greater than 1.
8 d, before and after the flowmeter can don't straight pipe.
4)
Measuring gas or steam can be used when the degree of pressure compensation.
5)
When was the current body contains impurities, should be put in front of the instrument already device or on a screen, but still should guarantee the straight pipe in front of the instrument.
6}
When measuring a small amount of out-of-phase gas-liquid two phase flow sensor installation method.
Measuring liquid, there may be a small amount of gas phase in the pipeline, its content does not exceed the prescribed gas liquid two phase fluid, so as to prevent gas stranded inside the sensor, you must install gas separator.
When measuring the amount of gas, when the pipe is measured condensate gas may be produced, and gas exist in unstable liquid phase was not removed, in order to prevent fluid retention, vertical installation within the sensor.
Fluid when measuring high and low temperature sensor itself should be effective guarantee measures.
7)
Measured the volume of a gas flow meter measured for the actual flow of the gas being measured work condition.
If the actual flow conversion into standard state of flow, can press type calculation type, 4?
P is a standard volume flow conditions;
4, it is the working status of the volume flow amount;
Ho is the absolute pressure of the gas being measured standard condition;
To the thermodynamic temperature of the gas being measured is a standard condition;
The household is work state, the absolute pressure of the gas being measured;
T is the working status the thermodynamic temperature of the gas being measured;
Z is the compressibility of the gas being measured work condition.
8)
When the pipe is longer, vibration may occur when the fixed bracket should be installed at upstream and downstream flow meter, prevent the pipeline vibration.
According to the experience, the flow measurement value vulnerable to air flow pulsation and pressure changes.
9)
. vn volume flow meter coefficient K and the flow meter coefficient K,,, o is established in the state of normal temperature calibration instrument before they leave the factory.
Instrument working status and laboratory calibration status is large, the meter coefficient K, and K‘
Correction should be done on the instrument coefficient correction method and the same any type of vortex flowmeter measurement instrument has its particularity, intelligent vortex precession flowmeter is no exception.
In order to make this kind of instrument can better serve the work flow metering, from the practical experience of manufacturing show that the following aspects of considerations should cause enough attention about the management and use the department.
1) attaches great importance to the instrument selection in the already selected instrument types (
For example, the intelligent vortex precession flowmeter)
, followed by the selection of instrument specifications and its supporting element is crucial.
In a word, choose the right to use well.
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