Technical parameters of a thermal mass flow meter

Applicable medium: all gases compatible with stainless steel.

Measuring range: -120m s

Operating temperature: -40 -510

Ambient temperature: -40 -85 Humidity less than 90% RH Pressure Drop: Negligible for pipes with a diameter greater than or equal to 3 inches Power requirements:

18 - 30VDC max 600mA

180 - 230VAC max.

100VAC max.

Output signal: 4-20mA in proportion to the mass flow rate and 4-20mA in proportion to temperature

Accuracy: 1% of the reading at full scale.

Repetition:

Housing material: die-cast aluminum, A2 A4 optional.

Probe material: 316L, tantalum, titanium, etc. are optional.

Ball valve: 316L

Compression fitting: 316L 304

Flange: 316L 304

Alarm output: The normally open contact capacity of the relay is 220AC 3A or 24VDC (alarm output for flow value only), and temperature output is available.

Display: Widescreen LCD display, parameters and variables can be set by pressing buttons on the panel (with password protection) Protection level: IP65 (different levels for different manufacturers).

The technical parameters of a thermal mass flow meter include:

1.Applicable medium: dry gas with low water content and all gases compatible with stainless steel.

2.Measuring range: -60m

Operating temperature: -10 -300 °C.

4.Ambient temperature: -10 -55. 5.

Pressure drop: negligible for pipes with diameters greater than or equal to 10mm.

6.Power requirements: 24VDC or 220VAC.

7.Output signal: 4-20mA in proportion to the mass flow rate and 4-20mA in proportion to temperature

8.Accuracy: 1% of the reading at full scale.

9.Repetition:10.

12.Probe material: 316L, tantalum, titanium, etc. are optional.

13.Ball valve: 316L

Flange: 316L 304

15.Display: Widescreen LCD display, parameters and variables can be set by pressing buttons on the panel (with password protection).

16.Protection level: IP65 (different levels of different manufacturers).

Use parameters. 1.Calibration medium: n2

2.Gas used: CO2

3.Capacity: 10sccm

4.Flow range: 0 10sccm min

5.Withstand pressure: 3MPa

6.Outlet Differential Pressure:

7.Accuracy: 1%.

8.Linearity:

9.Repeatability: 1%.

10.Temperature: 0—50 0C

12.Connection size: 6 quick screw joints.

Drive parameters.

13.input signal; 0-5v

operating voltage; 24v

Dexin Technology is good in this regard, you can go to their official website to find out.

Hello dear, let's take a look at the main parameters of the gas mass flow meter: Accuracy: Accuracy refers to the deviation between the measured results and the theoretical value of the gas mass flow meter in actual use.

Accuracy is often expressed as a percentage, e.g. full-scale). Measurement range: The measurement range refers to the maximum and minimum gas flow rate that a gas mass flow meter can measure.

Different gas mass flow meters have different measurement ranges, and users need to judge according to actual needs when choosing. Operating temperature range: The operating temperature range refers to the temperature range within which the gas mass flow meter can work normally.

Different types of gas mass flow meters have different operating temperature ranges, and users should pay attention to choosing the right product for their application environment when purchasing. Connection: The connection method includes flange connection, threaded connection, etc.

Flanged connections are suitable for most situations, while threaded connections are suitable for special occasions such as measurements in high-temperature, high-pressure environments. Output signal: The output signal of the gas mass flow meter can be an analog signal (such as 4-20mA) or a digital signal (such as RS485).

Analog signals are easy to transmit, but they are more likely to be interfered with; The digital signal has strong anti-interference ability, but requires additional digital modules for processing. Response time: Response time is the time it takes for a hail mass flow meter to output a stable value from the time it receives the input signal.

The long response time may affect the real-time nature of the measurement process. We hope you find the above information helpful

A gas mass flow meter is an instrument used to measure the mass flow of gas, and its parameters mainly include the following aspects: flow range: that is, the range of the mass flow rate of the gas that the instrument can measure.

Different models of gas mass flow meters have different flow ranges, which are usually expressed in mass or volume per unit of time. Measurement accuracy: The measurement accuracy of a gas mass flow meter is usually expressed in percentages or ppm (parts per million), depending on factors such as the size of the gas mass flow rate being measured and the sensitivity of the instrument.

Operating Pressure Range: The operating pressure range of a gas mass flow meter indicates the range of gas pressures it can withstand. In general, the wider the operating pressure range of an instrument, the wider its application range.

Applicable gas type: The type of gas suitable for the gas mass flow meter is also an important parameter, and different gas mass flow meters can be suitable for different types of gases, including standard gases, inert gases and combustible gases. Instrument output mode:

The output signal of the gas mass flow meter is usually in two ways: analog and digital, and different output methods can meet the needs of different users. Environment: The environment in which the gas mass flow meter is used is also an important factor affecting its performance, such as when used in high temperature, high pressure or corrosive environments, the material and design of the instrument need to take into account environmental details to ensure its long-term performance and stability.

Thermal gas mass flow meter, the gas flow measurement does not need temperature and pressure compensation, the measurement is convenient and accurate. The mass flow rate of the gas or the standard volume flow rate can be obtained. It has a wide turndown ratio and can measure gases with flow rates up to 100 nm s, which can be used to detect gas leaks.

Good seismic performance and long service life. The sensor has no moving parts and no pressure sensing parts, so it is not affected by vibrations on the measurement accuracy.

Easy to install and maintain. If site conditions allow, installation and maintenance can be achieved without stopping production. (Special customization required).

Digital design. The overall digital circuit measurement, accurate measurement and convenient maintenance. Using RS-485 communication, or HART communication, factory automation and integration can be realized.

What are the disadvantages of thermal mass flow meters?

1. In places where the gas composition to be measured changes greatly, the measured values will change greatly due to the changes in CP value and thermal conductivity, resulting in errors.

2. For small flow rates, the instrument will bring considerable heat to the measured gas.

3. For the thermal distributed thermal gas mass flow meter, if the measured gas deposits a scale layer on the pipe wall and affects the measured value, it must be cleaned regularly; For thin tube instruments, it has the disadvantage of being easy to clog, so it cannot be used under normal circumstances.

4. The use of pulsating flow will be limited.

If you need to know other questions about the thermal mass flow meter, you can contact the staff of Qingtian Instrument at any time.

Hello, I am Xiao Su, I am happy to answer for you, dear, gas flow meter is an instrument used to measure gas flow, widely used in industry, medical, environmental protection and other fields. When selecting a model, the following aspects need to be considered:1

Measurement range: According to the actual needs to choose the appropriate measurement range of the index, generally should be slightly larger than the actual use range. 2.

Measurement accuracy: Choose the appropriate measurement accuracy according to the actual needs, which should generally be slightly higher than the actual requirements. 3.

Measuring medium: choose the appropriate gas flowmeter according to the actual use of the medium, and the flowmeter of different media has different scope of application. 4.

Working pressure: Choose the appropriate gas flowmeter according to the actual working pressure, which should generally be slightly higher than the actual working pressure. 5.

Working temperature: Choose a suitable gas flowmeter according to the actual working temperature, which should generally be slightly higher than the actual working temperature. 6.

Environmental conditions: Choose the appropriate gas flowmeter according to the actual environmental conditions, such as explosion-proof, anti-corrosion and other special requirements. 7.

**And brand: according to the actual budget to choose the right gas Weiwufeng flowmeter brand and**, generally should choose well-known brands and reasonable products. To sum up, the selection of gas flowmeter needs to be comprehensively considered according to the actual needs and conditions, and the appropriate product can be selected to meet the actual use requirements.

The selection of gas flowmeter is in accordance with the production requirements, and should be based on the actual situation of the instrument product, and comprehensively consider the way to determine the bright sampling device and the form and specifications of the gas flowmeter.

According to the characteristics of the measured medium, a reasonable measurement method is selected, and according to the special parts of the measured medium and the accuracy requirements of the measurement accuracy, the plug-in flowmeter, the speed measuring element with differential pressure meter, the ultrasonic flowmeter, or the non-lossless method such as marking method and simulation method are used to measure the flow rate. Pay attention to the shockproof requirements of the gas flow meter and choose the specifications of the gas flow meter correctly.

The pressure resistance of the gas flowmeter should be slightly greater than the working pressure of the measured medium, and it should be doubled. Ensure that the gas flow meter will not leak.

Gas Flow Meter Applications:

Flow meter is one of the large categories of instruments and devices in process automation, it is widely used in metallurgy, electric power, coal, chemical industry, petroleum, transportation, construction, textile, food, medicine, agriculture, environmental protection and people's daily life and other fields of the national economy, is the development of industrial and agricultural production, energy saving, to improve product quality.

An important tool for improving economic efficiency and management level, it occupies an important position in the national economy. In process automation instruments and devices, flow meters have two major functions: as a detection instrument for process automation control systems and as a total meter for measuring the quantity of materials.

Hello, there are many aspects that need to be considered in the selection of a gas flow meter, including gas type, flow range, accuracy, working environment, etc. When choosing a gas flow meter, you need to determine the type of gas to be measured, because different gases have different physical properties, and you need to choose a flow meter suitable for the gas. Secondly, the measurement range needs to be considered, because different flow meters have different measuring ranges, and it is necessary to choose the appropriate measuring range according to the actual needs.

Accuracy is also an important consideration in the selection, and it is necessary to choose the right flowmeter according to the actual accuracy requirements. In addition, it is also necessary to consider the working environment of the flow meter, such as temperature, pressure and other factors, to ensure that the flow meter can work properly. In addition to this coincidence, it is also necessary to consider the structural form, material and other factors of the flowmeter.

When selecting the model, you can refer to the engineer's manual, the manufacturer's information or consult the professional to ensure that the selected flowmeter can meet the actual needs. In addition, it is also necessary to pay attention to maintenance during use to ensure the normal operation and accuracy of the flowmeter. Gas flowmeters are widely used in industrial, medical, environmental protection and other fields, and different types of flowmeters need to be selected in different fields.

For example, in the medical field, a sterile flow meter needs to be selected to ensure the accuracy and safety of the measurement results. In the field of environmental protection, it is necessary to choose a corrosion-resistant flowmeter to meet the complex working environment. Therefore, choosing the right gas flow meter needs to be comprehensively considered according to the actual needs.