Abstract: the rotameter scale installation and maintenance of information produced by excellent
flow meter, flow meter manufacturer to offer you the quotation.
Dahua instrument rotameter installed, maintenance (
1)
Rotor
flowmeter installation, use 1.
Instrument installation direction.
Most of the flow meter must be installed vertically on the no vibration of the pipeline, should not have obvious tilt, fluid flow through the instrument from bottom to top.
。
More flow meter manufacturers choose model price quote you are welcome to inquire, here is a rotameter scale article details installation and maintenance.
Dahua instrument rotameter installed, maintenance (
1)
Rotor flowmeter installation, use 1.
Instrument installation direction.
Most of the flow meter must be installed vertically on the no vibration of the pipeline, should not have obvious tilt, fluid flow through the instrument from bottom to top.
Angle between the center line of the flow meter and the plumb line is generally not more than 5 & deg;
, high precision,
1.
Level 5 or above)
Instrument & theta;
≤
20°
。
If & theta;
=12°
Will generate additional error 1%.
Instrument no strict length of straight pipe upstream requirements, but also have manufacturing requirements (
2 ~ 5)
D the length of necessity is not, in fact.
2.
Used for progr smudgy fluid.
Should be in the upstream filter instrument.
Metal tube with magnetic coupling flow meter is used for fluid may contain ferromagnetic impurities, magnetic filters should be installed in front of the instrument.
To maintain the cleanness of float and cone tube, especially the small instrument, float clean degree significantly affect the measured values, flushing piping when necessary, wash regularly.
3.
The installation of pulsating flow.
The pulsation of the flow itself, such as loading position instrument reciprocating pump or upstream of the regulator, or downstream has large load change, should be remedial change measuring position or in the pipeline system improvement, such as buffer tank;
Oscillations if the instrument itself, such as when measuring the gas pressure is too low, upstream of the valve is not fully open, downstream of the regulator is not installed in instrument such as reason, should be targeted to improve overcome, or re-election with damping device instrument.
4.
The installation of expanding their degrees.
If the measurement requirement of flow range wide, range of more than 10, often using more than two different flow range of glass tube flow meter in parallel, according to the measured choose one or more instrument series, small flow when reading the flow value range finder, large traffic flow meter said value, series method than parallel method, the operation is simple, do not need to frequently open/close the valve, but the pressure loss is big.
Can also be two different shape is put inside a meter and weight of the float, small flow frivolous son reading, heavy float float to the top after reading, range can be extended to 50 ~ 100.
5.
To do liquid with the gas inside the instrument.
Import and export in the Angle of the straight line type metal flow meter, used for the liquid note gaiden float displacement of extended casing residual air, must be the row;
If the liquid contains tiny bubbles flow easy to accumulate in the casing, exhaust your more regularly.
That are more important for small instrument, otherwise affect flow value significantly.
6.
Make necessary conversion flow value.
If not according to the use of density, viscosity and other medium parameters to the factory customized instrument, liquid instrument calibration flow with water, often gas meter calibration with air, fixed value in engineering standard state.
Conditions of use of fluid density, gas pressure, temperature and calibration are inconsistent, to do the necessary conversion.
Conversion formula and method of each factory have detailed operating instructions.
（
2)
The daily maintenance of rotameter 1.
Daily Tours of inspection instrument, power supply is normal, check the table (
Connecting line, line)
If leakage, damage or corrosion.
2.
Weekly cleaning instrument.
3.
Zero and 100% value can be set through internal button.
Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
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