Product Overview:

The ZXLWQ integrated intelligent Venturi flowmeter is a throttling flow sensor developed based on the Venturi effect. It has a simple structure, no movable parts, stable and reliable long-term use, and high accuracy. High degree of standardization, good linearity, and no need for real flow calibration. The Venturi flowmeter is flexible and convenient to use; Currently, differential pressure flow meters are widely used in flow measurement in China, accounting for an estimated 75% -85% of the total usage of flow meters according to relevant data. It is widely used in industries such as steam boilers, petroleum, chemical, steel, electricity, water conservancy, papermaking, pharmaceuticals, food, and chemical fibers.

Working Principle:

When the fluid filled in the pipeline flows through the throttling element inside the pipeline, the flow velocity will form a local contraction at the throat of the Venturi tube, resulting in an increase in flow velocity and a low static pressure, thus creating a pressure difference before and after the throat of the Venturi tube. The larger the fluid flow rate, the greater the pressure difference generated, which can be used to measure the flow rate. This measurement method is based on the flow continuity equation (law of conservation of mass) and Bernoulli equation (law of conservation of energy).

Product Features:

-Applied to flow measurement of various media, with minimal pressure loss;

-The required front and rear straight pipe sections are short in length and have a long service life;

-Simple structure, fully reliable, long service life, suitable for various dirty media such as liquids, gases, vapors, and two-phase flows;

-No need for real-time calibration, high precision, convenient for mass production;

-Resistant to high and low temperatures, high pressure, capable of measuring gases, liquids, and vapors, with a wide range of applications;

-Simultaneously display cumulative flow rate, instantaneous flow rate, pressure, and temperature;

-Output 4-channel (4~20) mA standard current signal and RS485 standard communication interface;

Technical Specifications:

Nominal Diameter

DN50～DN1000 

Nominal Pressure

（0～32）MPa 

medium temperature

（-50～700）℃

precision

Level 0.5, Level 1, Level 1.5, Level 2.0, Level 3.0

turndown ratio

（10～20) ：1

Requirements for straight pipe sections

Front 10D, rear 5D

connection method

Flange installation, pipeline welding

ambient temperature

（-30～70）℃ 

power supply method

External power supply: (7-30) V DC, operating current less than 40mA

Built in battery: 3.6V industrial lithium battery, capable of continuous operation for 2 years

output method

a. RS485 communication interface, standard MODBUS protocol

b、 4-channel (4~20) mA standard current signal with an accuracy of 0.1% FS

For more product information, please consult our toll free hotline at +0086 400 880 6367