Anti corrosion LZB glass rotor flowmeter LZB-100 cast iron glass rotor flowmeter

Description :

　　This product has the characteristics of high sensitivity, wide measurement range, and easy use and maintenance. The connection method of the instrument is flange connection. A flowmeter that uses changes in flow cross-section to measure non turbid and non pulsating liquid or gas flow under constant pressure conditions. Widely used in petroleum, chemical, metallurgical, synthetic fiber, dye, papermaking, environmental protection equipment, food, sugar production, as well as supporting facilities for scientific experimental instruments.

　　1、 Principle:

　　It mainly consists of a conical glass tube that expands from bottom to top and a float that moves up and down according to the fluid flow rate.

　　When the fluid flows through the conical tube from bottom to top, the lift S generated by the kinetic energy of the fluid on the float and the buoyancy A of the fluid cause the float to rise. When the sum of the lift S and buoyancy A is equal to the weight G of the float itself, the float is in equilibrium and stable at a certain height position. The scale on the conical tube indicates the flow rate value of the fluid.

　　2、 Usage conditions:

　　1. The flow of the measured fluid is a single-phase, non pulsating steady flow;

　　2. The angle between the centerline of the flowmeter and the plumb line shall not exceed 50 degrees;

　　3. The temperature and working pressure of the tested fluid should be within the allowable fluid temperature range and maximum working pressure of the flowmeter;

　　4. No mechanical vibration.

　　3、 Precautions to be taken during installation:

　　Before installation, it is necessary to verify that the instrument allows for a working temperature and pressure that cannot be lower than the temperature and pressure of the fluid being measured in the pipeline, and that the instrument scale range is within the range of changes in the fluid flow rate being measured.

　　2. It must be installed vertically. The fluid flows through the instrument from bottom to top for measurement.

　　3. It is required to be installed in a place without vibration and easy to maintain, with reliable support, and should not receive any tension or pressure from pipelines.

　　When used for dirty fluids, the measured fluid may mix with oil particles, etc., and a filter must be installed upstream of the instrument. Especially for instruments with small diameters (below ф 25mm), they are very sensitive to dirt and must consider the issue of filtering in front of the instrument. When there may be ferromagnetic impurities in the measured fluid, a magnetic filter should be installed in front of the instrument. Measure dirty fluids.

　　4、 Selection:

　　1. Object of measurement. Measure the type of medium, pressure level, and chemical properties. For corrosive media such as liquid and gas media, corrosion-resistant flow meters should be selected.

　　1. The corrosion-resistant glass rotor flowmeter is mainly used for detecting the flow rate of corrosive liquids and gas media, such as strong acids, strong bases, oxidants, strong oxidizing acids, organic solvents, and other corrosive gas or liquid media.

　　2. The performance of the flowmeter itself. After the above conditions are determined, generally speaking, if there is no significant change in price, priority can be given to using a needle valve placed on the upper part of the flowmeter; For those with larger flow holes, it is a direct flow scale; Simple in structure; Smaller external dimensions, etc. If it is in a small flow range, the ball float type can be used because it is stable, less prone to dust accumulation, has high accuracy, and has good interchangeability during measurement.

　　3. Choose according to the price. Generally speaking, high precision comes at a higher price. The accuracy level of the instrument should be selected according to the measurement purpose. If only the measurement medium throughput needs to be controlled, adjusted through trial operation, and the throughput needs to be consistently stable in the future, then accuracy is secondary.

AfterSalesService :

• Anti corrosion LZB glass rotor flowmeter