Pipe-style thermal mass flow meter

The following pipeline thermal gas mass flow meters are provided by Guangzhou Dichuan Instrument Co., Ltd. If you are interested in pipeline thermal gas mass flow meters or would like to learn more about thermal gas mass flow meters, such as price, model, and images, please feel free to call for inquiries and discussions! When contacting, please mention Guangzhou Dichuan Instrument Co., Ltd. at 020-85628522.

I. Overview:

Product performance and accuracy are crucial to customers. All flow meter products manufactured by Guangzhou Dichuan Instrument Co., Ltd. undergo quality inspection before leaving the factory and come with an inspection report. We adhere to strict testing procedures, take pride in our product performance, and ensure that customers receive high-quality products.
 The performance of flow meters is very important to both us and our users, so we are extremely cautious during testing. Although there are various methods to test flow meter performance, we only use the strictest ones. Therefore, when customers need to consider product performance and repeatability, our products are your best choice.

Features of Pipeline Thermal Gas Mass Flow Meters

   The MF201 series pipeline thermal gas mass flow meters can be used for gas flow measurement as well as in process control applications. They are produced using advanced American technology, require no temperature or pressure compensation, and directly measure the mass flow of the fluid. Their standout features include: no moving parts; minimal pressure loss; wide range ratio; high accuracy; high reliability; simple installation and easy operation. They can fully replace orifice plates and differential pressure flow meters in all fields.

Thermal Gas Mass Flow Meters: Can be used to measure the standard volumetric flow or mass flow of various single or mixed gases (except acetylene) in pipelines of any shape or material (such as round, square, or rectangular pipes, with diameters ranging from 8mm to 50,000mm or larger, and materials including various metals, plastics, cement, etc.), such as air, nitrogen, oxygen, ozone, helium, hydrogen, methane, ethane, propane, ethylene, propylene, carbon monoxide, carbon dioxide, nitrous oxide, sulfur dioxide, hydrogen sulfide, hydrogen fluoride, phosphine, ammonia, Freon, isobutane, n-pentane, methane, gas, biogas, various blast furnace and coke oven gases, water gas, semi-water gas, mixed gas, natural gas, dust-laden flue gas, and chemical mixed gases. Structurally, they can be configured as pipeline or insertion flow meters with various accessories. Typical applications include gas measurement and control in the gas production industry, various gases and flare gas measurement and control in the petrochemical industry; primary air, secondary air, and pulverized coal air in power plants; various gases, air, and hot air in the steel industry; high-purity gases in the electronics industry; heating and ventilation in HVAC and nuclear power industries; air and biogas in aeration tanks in water treatment; air supply and gas extraction in the coal mining industry; air in engine air-fuel ratio testing in the automotive and motorcycle manufacturing industry; and gas flow measurement in laboratories.

﹡ No temperature or pressure compensation required; one meter directly measures the volumetric or mass flow of gas under standard conditions;

﹡ Extremely low flow measurement lower limit, starting almost from zero, which is unmatched by other types of gas flow meters;

﹡ High accuracy, high sensitivity, fast response, and an extremely wide range ratio (up to 1000:1), especially suitable for trade settlement and accounting;

﹡ Minimal pressure loss, almost negligible, especially suitable for measuring low-velocity gases in large pipelines;

﹡ Integral or split structure, simple and reliable overall design, with minimal installation and maintenance required;

﹡ No internal moving parts; robust 316L stainless steel or tantalum metal encapsulated probe, pollution-free, smooth and anti-fouling, corrosion-resistant;

﹡ On-site LCD display of instantaneous and cumulative flow; standard current or voltage signal output; upper (lower) limit alarm, etc.;

﹡ No need to open the cover to reset cumulative flow, especially suitable for explosion-proof environments; power-off data protection function;

﹡ Built-in memory, enabling online maintenance via computer or reader/writer without removing the flow meter and requiring re-purging of the pipeline;

﹡ Optional non-stop flow device for online disassembly, assembly, and probe cleaning, especially suitable for fouling gases such as coke oven and blast furnace gas, without interrupting pipeline flow;

﹡ Optional flow conditioning device, significantly reducing the requirements for upstream and downstream straight pipe sections;

﹡ Optional tantalum metal probe for measuring highly corrosive gases such as hydrogen fluoride and phosphine.

Traditional flow meters require temperature and pressure compensation to measure fluid mass flow, while thermal gas flow meters require no such compensation and directly measure the mass flow of the fluid. Their standout features include: direct applicability for trade settlement; no moving parts; minimal pressure loss; wide range ratio; high accuracy; high reliability; simple installation and easy operation. They are widely used in petroleum, chemical, medical, thermal power, environmental protection, and other industries.

III. Technical Parameters:

Measurement Range: (0.05～80) Nm/s (standard conditions: 20°C, 101.33 kPa)

Measurement Method: Pipeline type, Insertion type

Temperature Range: Ambient temperature: -40°C to +60°C

           Medium temperature: -10°C to +450°C

Accuracy: ±1% of reading; ±0.5% of full scale

Repeatability: ±0.5% of full scale

Output: 4-20mA DC (max load 600Ω); RS232; RS485

Response Speed: Less than 1S                  

Power Supply Voltage: 24VDC±10%

Mechanical Connection: 3/4NPT stainless steel fasteners (insertion type); Flange

Probe Length: 300mm (standard length for insertion type, special lengths available upon request)

Probe Diameter: 19mm (insertion type)        

Straight Pipe Length: No strict requirements

Pressure Loss: Negligible

Working Pressure: 1.6MPa; 7.3MPa

On-site Display: LED display; LCD display

Data Protection: Cumulative value stored in EEPROM (can be saved for 100 years without power)

Sensor and Pipeline Body Material: 316L (Hastelloy C optional)

Protection Rating: IP65

Explosion-proof Rating: ExdIICT6

IV. Application Examples

1. Petrochemical Industry

Application: Flare gas emission monitoring

Product Advantages: Wide range ratio, sensor not prone to clogging, online insertion/removal and cleaning, suitable for a wide range of gases

2. Power Industry

Application: Measurement of primary air, secondary air, and pulverized coal air flow in boilers

Product Advantages: Easy installation, no straight pipe requirements, low pressure loss, no temperature or pressure compensation needed, suitable for harsh conditions (e.g., air containing dust, particles, severe wear, low pressure, etc.)

3. Metallurgical Industry

Application: Blast furnace gas, coke oven gas measurement

Product Advantages: Calibrated according to actual gas composition, can correct for composition changes, online sensor cleaning, adjustable insertion length

4. Electronics Industry

Application: High-purity gas mass flow measurement

Product Advantages: Direct mass flow measurement without temperature or pressure compensation, highly polished sensor head, suitable for trade settlement

5. Heating, Ventilation, and Air Conditioning (HVAC)

Product Advantages: Sensitive response, reliable operation, no strict requirements for installation straight pipe sections

6. Water Treatment Industry

Application: Measuring air flow in aeration tanks

Product Advantages: Resistant to dirt and dust, truly no pressure drop, easy on-site installation

7. Food Industry

Application: Introducing appropriate amounts of gas into reactors for process and quality control

Product Advantages: Sanitary 3A, high purity, all wetted surfaces made of stainless steel, wide range ratio