Accurate HVAC air flow measurement is critical for system balancing, energy management, and indoor climate control. In large commercial buildings, cleanrooms, and data centers, air flow can vary with changing temperature, humidity, and pressure.
The Comate TGF460 immersion type thermal mass flow meter offers a robust solution for real-time, high-precision air flow monitoring, enabling engineers to achieve optimal performance and energy savings.
Working Principle of Immersion Thermal Mass Flow Meter
The Comate TGF460 uses a constant-power thermal mass sensing principle. A heated sensor and a reference sensor are exposed directly to the air stream. As air flows across the probe, heat is carried away, and the sensor measures the required power to maintain a constant temperature difference.
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Direct Mass Flow Measurement – Eliminates the need for temperature and pressure compensation.
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Wide Measuring Range – From low-velocity air in ventilation ducts to high-speed flow in industrial HVAC systems.
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Fast Response Time – Captures rapid changes in air flow for precise control.
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Zero Drift Performance – No zero-point drift, ensuring long-term measurement stability and reliability even under continuous operation.
Key Technical Features of Comate TGF460
| Feature | Technical Advantage |
|---|---|
| Insertion Design | Single-point or multi-point insertion, ideal for large ducts and irregular air distribution. |
| Measurement Range | 0.3 Nm/s to 180 Nm/s, suitable for variable-speed HVAC systems. |
| Accuracy | ±1.5% of reading, ensuring stable and repeatable results even under fluctuating conditions. |
| Operating Conditions | -40°C to 150°C, suitable for harsh ventilation environments. |
| Output Options | 4–20mA, Modbus RTU, and pulse output for seamless integration with BMS (Building Management System). |
| Bluetooth Configuration | Built-in Bluetooth module for wireless calibration and data retrieval via mobile app. |
Advantages in HVAC Applications
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Low Pressure Loss – The slim probe design ensures minimal disturbance to the airflow, critical for maintaining system efficiency.
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High Turndown Ratio – Up to 100:1, allowing accurate measurement from startup to peak load.
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Energy Monitoring – Direct mass flow data can be combined with temperature and humidity sensors to calculate air energy consumption.
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Maintenance-Free Operation – No moving parts, reducing long-term service costs.
Typical Use Cases
The Comate TGF460 immersion type flow meter is widely applied in:
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Cleanroom Air Distribution – Ensuring constant airflow to meet ISO standards.
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Data Center Cooling Systems – Monitoring supply and return air flow for precise thermal management.
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Commercial HVAC Balancing – Optimizing air supply in large office complexes.
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Industrial Ventilation – Measuring exhaust and makeup air in factories and warehouses.
System Integration
The TGF460 supports Modbus RTU and analog outputs, enabling easy integration with HVAC building automation systems. Engineers can remotely configure alarms, data logging, and energy reporting, providing a comprehensive solution for energy-efficient building management.
