How to correctly select the glass rotor flowmeter glass float flowmeter is a simple to use, easy to read, the use of a very wide range of instantaneous flow measurement instruments. In this category of environmental protection equipment and instruments in the amount of up to more than 30,000 units / year. Therefore, select and use this instrument, extremely important.
A glass float flowmeter varieties and selection
Glass float flowmeter according to its use and adapt to the scope can be divided into: ordinary, with ribbed Viton type, micro-flow and small shape type, corrosion-resistant type, laboratory type, insulation type, alarm type and high-pressure type eight series. In accordance with the national development of the instrument series spectrum, regardless of which series, including up to 12 caliber from 1 mm to 100 mm ****, can measure the flow rate range is: liquid (water) 0.1 ml / min ~ 40 cubic meters / hour, gas (air) 1 ml / min ~ 1,000 cubic meters / hour. For environmental protection instruments supporting the glass rotor flowmeter general caliber is not more than 10 mm, the measured flow is a small flow range.
Glass float flowmeter selection can be considered from the following aspects.
1. The object of measurement. That is, the type of measurement medium, pressure size, chemical properties. Such as liquid media, gas media, corrosive media should be selected corrosion-resistant flowmeter.
2. Flow meter performance itself. After the above conditions are determined, generally speaking, if the price is not a big change, you can prioritize the needle valve placed in the upper part of the flow meter; have a larger flow hole, is a direct flow scale; simple structure; smaller external dimensions, and so on. Such as small flow range, you can choose the ball float type, because it is stable when measuring, not easy to accumulate dust, high precision, good interchangeability.
3. According to the price selection. Generally speaking, the price of high precision is high. According to the purpose of the measurement of the choice of instrumentation accuracy level, such as only to control the measurement medium through the amount of trial run adjustments, and then always need to stabilize the amount of this through, then the accuracy is secondary.