Description
The thermal mass flow meter operates on the principle of thermal dispersion, utilizing the concept that gases conduct heat differently than other substances. The meter consists of two temperature sensors: one is a heated sensor, and the other is a reference sensor. The heated sensor maintains a constant temperature difference with the reference sensor. As the gas flows through the meter, it cools the heated sensor, and the flow rate is directly proportional to the amount of cooling. By measuring the temperature difference between the two sensors, the thermal mass flow meter calculates the gas flow rate.
Advantages
The thermal mass flow meter operates on the principle of thermal dispersion, utilizing the concept that gases conduct heat differently than other substances. The meter consists of two temperature sensors: one is a heated sensor, and the other is a reference sensor. The heated sensor maintains a constant temperature difference with the reference sensor. As the gas flows through the meter, it cools the heated sensor, and the flow rate is directly proportional to the amount of cooling. By measuring the temperature difference between the two sensors, the thermal mass flow meter calculates the gas flow rate.
Application
Thermal mass flowmeter, one of the advantages of thermal mass flow meter is that they provide direct mass flow measurements. This makes them suitable for applications where mass flow is a critical parameter. Thermal mass flow meter typically have no moving parts in contact with the fluid. This feature contributes to their reliability and reduces the need for maintenance. Thermal mass flow meter often has a high turndown ratio, allowing them to accurately measure a wide range of flow rates. This is beneficial in processes where flow rates may vary. Thermal mass flow meter is known for their fast response times, providing real-time measurements of flow rates. These flow meter generally have a low pressure drop, meaning they do not significantly impede the flow of the fluid in the pipeline.
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Technical Specification
| Sensor Housing | SS – 316 / Hastelloy / PTFE Coated |
| Velocity | ± 0.1 ~ 100 Nm/s |
| Accuracy (standard position) | ± 1% |
| Fluid & Ambient Temperature | – 20 to 240 ºC |
| Connection | Insertion Type / Flange End |
FLOW RANGE
| Connection(f) | Flow rate maximum: Nm3/hour |
| 15 | 65 |
| 25 | 175 |
| 32 | 290 |
| 40 | 450 |
| 50 | 700 |
| 65 | 1200 |
| 80 | 1800 |
| 100 | 2800 |
| 125 | 4400 |
| 150 | 6300 |
| 200 | 10000 |
| 250 | 17000 |
| 300 | 25000 |
| 400 | 45000 |
| 500 | 70000 |
| 600 | 100000 |
| 700 | 135000 |
| 800 | 180000 |
| 900 | 220000 |
| 1000 | 280000 |
| 1200 | 400000 |
| 1500 | 600000 |
| 2000 | 700000 |