Insertion Type Thermal |Mass Flow Meter
An Insertion Type Thermal Mass Flow Meter is a device designed to measure the mass flow of gases or air by using the principle of heat transfer from a heated sensor to the surrounding fluid. Unlike volumetric flow meters, thermal mass flow meters directly measure the mass flow rate, making them particularly suitable for gases like air, nitrogen, or steam. The insertion-type design means the meter is inserted into a pipe or duct, measuring flow without requiring a full-bore meter, which makes it ideal for large pipes and ducts.
Key Features of Insertion-Type Thermal Mass Flow Meters:
1. Insertion Design: These meters are inserted into a pipe or duct, allowing them to be installed in large pipes or ducts without cutting or modifying the entire line.
2. Direct Mass Flow Measurement: No need for additional temperature or pressure correction to get mass flow rate, making it more accurate for gases.
3. Wide Flow Range:These meters can measure very low to high flow rates, which makes them suitable for a wide range of applications.
4. Low Pressure Drop: Insertion meters create minimal disruption to the flow, resulting in a negligible pressure drop.
5. Cost-Effective: Insertion-type meters are generally more affordable than full-bore meters for large pipe applications.
Specification :
1. Flow Range: Depends on the specific model but typically covers a broad range (e.g., 0.5 to 100 m/s for gases).
2. Pipe Size: Insertion-type meters are ideal for large pipes, typically ranging from DN50 (2 inches) to DN1000 (40 inches) or larger.
3. Accuracy: Typically ±1-2% of the reading, depending on the flow conditions.
4. Turndown Ratio: Suitable for gases at temperatures ranging from -40°C to 400°C (-40°F to 752°F).
5. Operating Temperature: A wide turndown ratio of up to 100:1, meaning it can measure flow rates accurately over a large range.
5. Operating Pressure:: Can handle pressure ranges from low to high, depending on the specific model, often up to 50 bar (725 psi) or higher.
Advantages :
1. Direct Mass Flow Measurement: No need for separate temperature and pressure compensation.
2. Cost-Efficient for Large Pipes: Insertion-type meters are more cost-effective for large pipe diameters as they only require insertion and not a full-bore installation.
3. Wide Range of Applications: Can measure a wide range of gases and can be used in various industries such as power plants, chemical plants, HVAC, and environmental monitoring.
4. Minimal Pressure Drop: Suitable for gases at temperatures ranging from -40°C to 400°C (-40°F to 752°F).
5. Easy Installation and Maintenance: Can be installed without shutting down the process or cutting the pipe, and removal for maintenance is simple.