Metal tube rotor flowmeter, also known as metal tube float flowmeter, its use is more widely used, generally used to measure the medium, small flow and micro-flow, the measurement medium is generally clean, not easy to crystallize and solidify, viscosity is not large liquids and gases, steam, the requirements of the medium flow rate changes slowly.
Instrumentation is installed correctly or not the instrument can be followed by the fundamental stability of the work, whether or not the instrument can be done correctly installed is an important indicator of the test of an instrument installation of technical personnel for the installation of a variety of factors that will be encountered, this article on the metal tube flowmeter in the installation of the following aspects of the factors to be noted to friends to make an introduction.
Most float flow meters must be installed vertically in vibration-free piping without significant inclination, with the fluid flowing through the meter from the bottom up. The fluid flows through the instrument from bottom to top. The float flow meter is equipped with a bypass pipe system for maintenance without stopping the flow. Float flowmeter centerline and plumbline angle between the general not more than 5 degrees, high precision (1.5 or more) instrument θ ≤ 20 °. If θ = 12 ° will produce 1% additional error. Instrument without strict upstream straight pipe length requirements, but there are manufacturers require (2-5) D length, in fact, the need is not great. Filter should be installed upstream of the meter.
With magnetic coupling metal tube float flowmeter for may contain ferromagnetic impurities in the fluid, should be installed in front of the instrument magnetic filter. To keep the float and cone tube clean, especially small diameter meters, float cleanliness significantly affect the measured value. For example, 6mm caliber glass float flowmeter, in the laboratory to measure the seemingly clean water, flow rate of 2.5L / h, running 24h, the flow rate increased by a few percent, the float surface is attached to the naked eye to observe the foreign matter, remove the float with gauze, that is, to restore the original flow rate value. If necessary, can be shown as shown in Figure 7 to set up the flushing piping, flushing at regular intervals.
The above is the metal tube float flowmeter manufacturers to provide you with the metal tube float flowmeter how to determine the direction of installation, you can do some reference according to these contents above, I hope to help users in the use of the process to understand more about the maintenance of the way to reduce the instrument in the use of the process of the measurement of the error, and often on the instrument for the maintenance and maintenance can effectively improve the performance of the instrument.
Hangzhou Economic Development Area，Hangzhou 310018，China
