Gear flow meter

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Gear flowmeter, also known as displacement flowmeter, is a kind of volumetric flowmeter, which is of…

I. product overview

Zw-la series gear flowmeter is a kind of volumetric flowmeter, which is used for precise continuous or discontinuous measurement of liquid flow or instantaneous flow in pipe. It is especially suitable for heavy oil, polyvinyl alcohol, resin and other high viscosity medium flow measurement. A mechanical measuring element is used to continuously divide the fluid into a single known volume part, and the total volume of the fluid is measured according to the number of times that the volume part of the fluid is filled and discharged successively and repeatedly in the measuring chamber.

Ii. Working principle and structure

Zw-la series gear flow meter cavity has a pair of meshing gear as the rotor, two gears and cavity can form a fixed volume, known as the standard volume, flow is measured by calculating the number of a certain time to flow through the standard volume. Two perfectly matched gears are enclosed in a solid cavity. When working, the tested liquid pushes the gears to rotate, which is detected by a non-contact detector. The clearance between gears forms a measuring chamber. As each tooth passes through the detector, the detector generates a pulse. The output pulse signal is converted and processed by the meter volume/pulse (Vm) and displayed to meet the user's requirements. This flowmeter is especially suitable for precision, high pressure and high viscosity environments.

                                    结构原理图 

Iii. Application:

Zw-la series gear flow meters are widely used in petroleum, petrochemical, natural gas, chemical, papermaking, automobile, food and other industries.

Iv. Main features:

1. Flow measurement has nothing to do with the flow state of the fluid;

2, the greater the viscosity of the medium, the smaller the amount of leakage leakage from the gear and measurement space clearance, so the greater the viscosity of the medium under test, the smaller the leakage error you, the more favorable to the measurement;

3, high measurement accuracy, suitable for high viscosity medium flow and measurement, but not for the fluid containing solid particles, need to add a filter; If there is gas in the medium, it will cause measurement error.

4. Small size, light weight, low vibration and noise during operation, able to measure the fluid viscosity up to 10000pa.s. The measuring accuracy is 0.5 and 0.2. The measuring range is wide and zui height is up to 50:1.

5. General purpose, high pressure, food type, suitable for micro flow measurement of various cleaning liquids.

Five, the technical parameters:

（a） Instrument parameters

（The second） Using the environment
The temperature- 20℃ ~+ 50℃ humidity5%~95%Air pressure85kpa~106kpa。
（three） Electrical indicators
1、 Power supply: the power supply3.6VLithium-ion batteries, power consumption <1mw;External power12VDC~24VDC,Power consumption <2w；
2.、 Output: pulse, current,RS485Mudbus 、Hartagreement--And so on;
Six, appearance size:

Seven, installation method:
Note: the front without any direction, straight pipe.If there is any impurities, need to add filter.
Eight, Selection of code:

Nine, design selection and order notes:

1, the name of the flowmeter, models.Specification, material, etc.

2, medium temperature (℃), scope of work pressure (Mpa), flow (m3 / h).

Name 3, medium viscosity values or media.

4, any special requirements (such as explosion-proof, etc.).

5, you need to learn more about the products, please call for information.

After-sales service commitment:

1, our company sold by flow meter series products within twelve months appear quality problem, is responsible for free maintenance.

2, the warranty period, any quality problems such as the products of our company, my company is responsible for free repair or replacement.

3, the warranty period, such as user improper use, damaged products, my company is responsible for the maintenance, charge damage parts cost.

4, after the warranty period appear quality problem, my company is responsible for the maintenance, charge damage parts cost.

5, such as user need to my company site services, to users in the province I company service personnel to reach the site within 12 hours, fujian association of foreign languages and user reach the site within 48 hours.