Gas Mass Flow Meter for Compressed Air with High Precision Low Limit

Product Description

Products Description

A mass flow meter, also known as an inertial flow meter, is a device that measures mass flow rate of a fluid traveling through a tube. The mass flow rate is the mass of the fluid traveling past a fixed point per unit time.
The mass flow meter does not measure the volume per unit time (e.g. cubic meters per second) passing through the device; it measures the mass per unit time (e.g. kilograms per second) flowing through the device. Volumetric flow rate is the mass flow rate divided by the fluid density. If the density is constant, then the relationship is simple. If the fluid has varying density, then the relationship is not simple. For example, the density of the fluid may change with temperature, pressure, or composition. The fluid may also be a combination of phases such as a fluid with entrained bubbles. Actual density can be determined due to dependency of sound velocity on the controlled liquid concentration.
A thermal gas mass flowmeter is a type of flowmeter used to measure the mass flow rate of gases. It operates on the principle of heat transfer from a heated element to the flowing gas.
 

The thermal gas mass flowmeter is designed based on the principle of thermal diffusion.
The meter uses the constant temperature difference method to accurately measure the gas. It has the advantages of small size, high digitization, easy installation and accurate measurement.
The sensor part is composed of two reference level platinum resistance temperature sensors. When the instrument is working, one sensor can continuously measure the medium temperature T1; the other sensor's temperature rises to higher than the medium temperature T2 through self-heating, it is used to sense the flow rate of the fluid, so it's known as velocity sensor. The temperature △ T =T2-T1, T2T1, when there is a fluid flowing, gas molecules collide with the sensor and take away the heat of T2, which makes the temperature of T2 reduction. If to keep △ T unchanged, it is necessary to increase the supply current of T2. The faster the gas flows, the more heat will be taken away.
There is a fixed functional relationship between gas flow velocity and the incremental heat, which is the principle of constant temperature difference.
The flowmeter consists of a heated sensor element and a temperature sensor. The sensor element is heated to a constant temperature, and the gas flowing over it carries away heat. The temperature sensor measures the temperature difference between the heated element and the gas.

Based on the heat transfer principle, the flowmeter calculates the mass flow rate by measuring the power required to maintain the heated element at a constant temperature. The power required is proportional to the mass flow rate of the gas.

Application and the features of the Thermal gas mass flowmeters:
Industry HVAC systems, industrial processes, and scientific research.Feature:

1. high accuracy, wide rangeability, and low pressure drop
2. limitations in measuring certain gases with low thermal conductivity or high viscosity.

Production Feature

1	The real mass flowmeter, to measure the gas flow without temperature and pressure compensation, measurement is convenient and accurate. The mass flow rate or standard volume flow rate of the gas can be obtained.
2	Wide range ratio, can measure the flow rate up to 100Nm/s to 0.5Nm/s gas, can be used for gas leak detection.
3	Good anti-seismic performance and long service life, the sensor has no moving parts and pressure sensing parts, and the measurement accuracy is not affected by vibration.
4	Simpleinstallation and maintenance, and the installation and maintenance can be achieved without stopping production if the site conditions permit (special customization is required).
5	Digital design, overall digital circuit measurement, accurate measurement, easy maintenance.
6	Adopting 4~20mA, RS-485 communication,factory automation, integrationwill be achieved .

Product packaging

 

 

 

 

 

 

 

Company Profile

Kaifeng ChuangXin Measurement and Control Instrument Co., Ltd.was established in 2009, and is a professional company occupied in instruments R & D, manufacturer, sales and technical counsel.The main products are Electromagnetic Flowmeter, Vortex Flowmeter, Turbine Flowmeter, Orifice Flowmeter, Metal float flowmeter, Ultrasonic flowmeter, Swirlmeter and some other process control instruments. Our products are widely used in water treatment, environmental protection, water conservancy, petroleum, chemical, pharmaceutical, natural gas, electricity, heating supplying, papermaking, metallurgy, scientific research, and other fields.
Our enterprise development strategy is "People-Oriented, Quality First, Development on Technology ".

We attach importance to management internally, and expanding the market externally, to focus on the business philosophy of quality products, good service, reasonable price, honest and trustworthy all along.
Our Name Chuangxin in Chinese means to innovate. Someone says Innovation is the core of the manufacturing industry, it is to master the key core technologies, which must be achieved by self-reliance and independent innovation, we strive all the time in this direction.
Keeping continuous innovating and improving to provide satisfactory products and services to our global clients.

 

 

 

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Exhibition

 

 

 

Q1. Are you a manufacturer or a trading company?
A1. We are a leading manufacturer of multiple flow measuring and control products. Welcome to visit our factory at any time.

 

Q2.Is there any stock?
A2.Yes,we have materials in stock,delivery time is 3-5days to help you get it asap.
 

Q3.How about warranty?
A3.12 months from customer receiving the shipment.

Q4. What is the standard of package?
A4. Export standard package or special package according to customers' requirement.

Q5.How about after-sales service?
Q5.We are 24hours online, professional team will contact you whthin 12hours after receiving your inquiry.