Abstract: the effect of viscosity on the turbine meter scale measurement accuracy and how to improve the accuracy of the turbine information produced by excellent flow meter, flow meter manufacturer to offer you the quotation.
Well-known flowmeter in the turbine flowmeter, volumetric flowmeter and coriolis mass flowmeter
is a product of three kinds of repeatability, accuracy level is higher, and turbine flowmeter has its own characteristics, such as simple structure, less processing parts, light in weight.
More flow meter manufacturers choose model price quote you are welcome to inquire, here is the effect of viscosity on the turbine meter scale measurement accuracy and how to improve the accuracy of the turbine article details.
Well-known flowmeter in the turbine flowmeter, volumetric flowmeter and coriolis mass flowmeter is a product of three kinds of repeatability, accuracy level is higher, and turbine flowmeter has its own characteristics, such as simple structure, low processing components, light weight, convenient maintenance, adapt to large flow capacity and high parameter, etc.
Due to mechanical turbine eccentric and frictional resistance moment of tiny change, the influence of the turbine flowmeter in the same rotation cycle occurs periodically speed change, that make it hard for the turbine to a very low speed, stop running because of the highly vulnerable to disturbance at this time.
The measured medium viscosity influence on turbine flowmeter: 1, the output of high viscosity stripper well, appropriate USES acquisition system makes it more sensitive turbine can be accurately collecting low speed (
Less than zero.
01 r / s)
2, before entering the turbine response of linear segment, K values continue to rise, and with the inlet Reynolds number flow meter, exponential relationship.
3, with the enhancing viscosity and K value of the turbine flowmeter will decline, also will become worse linearity.
4, with the increase of viscosity, the start of the turbine flowmeter displacement decreased, while the response of zui low speed will decline.
5, is used to measure the turbine flowmeter of different viscosity fluid, only on a down the condition of high viscosity flow Reynolds number, different calibration can approximate the turbine flowmeter K value and the relationship between the Reynolds number, and deduced the turbine of the response curves of different viscosity fluid.
The influencing factors of turbine flowmeter measurement precision have?
Usually have some impurities in 1, the medium, to produce the wear of bearing, axis, increased the gap between, the moving parts of dynamic balance is destroyed, speed, or dirt into the gap, make motion resistance increases, speed down.
All of these reasons resulting in a decrease of instrument display value, negative error, adverse to the fluid of the supplier.
2, fluid of fibrous or viscous impurities attached to the rotating part of the flowmeter, make rotational resistance increases, resulting in a decrease of instrument of the indicated value, the negative error, adverse to the fluid of the supplier.
3, fluid temperature and pressure changes may make the escape of the liquid in the pipe air or because of the pressure inside the pipeline is lower than fluid saturation vapor pressure, make part of the liquid and steam, is also likely to make out with medium pressure air is sucked into the pipe, the gas with the measured liquid, causing instrument indicated value increase, there is error, adverse to the fluid of the buyer.
4, working environment is poor, for example, the electromagnetic interference, dust, high temperature, vibration, humidity, etc. , may cause a malfunction or failure of turbine flow sensor, the direct cause of turbine flowmeter, of error of error is positive or negative, may not be obvious, may complete failure.
For the above phenomenon, the more serious when, can find problems from the comparison the working state of the process, easy to take corresponding measures.
But, in the early part of the problem, don't take special measures can't found the problem.
Turbine flowmeter maintenance should pay attention to the following: 1, when using, should maintain the cleanness of measured medium, does not contain impurities such as fiber and particles.
2, turbine flow sensor, at the beginning of the use should be to slow sensor with medium, and then open the outlet valve (
The valve should be installed in the back-end flow meters)
, the sensor is in a state of no medium is strictly prohibited by the high velocity impact.
3, the maintenance period of turbine flow sensor is usually half a year.
Maintenance when cleaning, please note that you are the measuring chamber of damaged parts, especially in the impeller.
Please watch the orientation and the position of the impeller when assembling.
4, turbine flow sensor need not when, should be clean inside medium, dry and after on both ends of the sensor and protective cover, prevent dirt to enter, and then placed in a dry place preservation.
5, with the filter should be cleaned regularly, need not when should clean the internal medium, as well as sensors, dustproof set, placed in a dry place preservation.
6, in front of the sensor installation, with his mouth or hand wheel, make its rapid rotation observations have showed that sensor installation again when have shown.
If no display, should check the relevant parts, troubleshooting.
Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
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