RTU Thermal Mass Flow Meter
The RTU thermal gas mass flow meter is an advanced flow measurement instrument based on the principle of thermal diffusion. It precisely measures the mass flow rate of gases by utilizing the relationship between heat exchange between the flowing fluid and the heat source. The sensor assembly incorporates two high-precision platinum resistance temperature detectors (RTDs). One RTD serves as the heated velocity sensor, while the other measures gas temperature for compensation. As gas velocity increases, it carries away more heat. By measuring the temperature change of the heated sensor or the energy required to maintain a constant temperature difference, the gas mass flow rate is calculated.
The core advantage of this measurement method lies in its direct measurement of gas mass flow without requiring temperature or pressure compensation. This simplifies system configuration and enhances measurement accuracy. The instrument typically incorporates a high-performance processor (such as an AVR series microcontroller), combined with digital measurement circuits and intelligent algorithms, ensuring high accuracy, excellent repeatability, and fast response times.
Description
Product Advantages
1. Direct Measurement, No Compensation Required: Directly displays gas mass flow or standard volumetric flow, eliminating cumbersome temperature and pressure compensation steps to reduce system complexity and cost.
2. Wide Turndown Ratio and High Accuracy: Features an extremely wide turndown ratio, capable of measuring flow rates from 0.1 Nm/s to 100 Nm/s or higher. Accuracy reaches ±1% of reading with excellent repeatability, meeting stringent requirements for trade settlement and similar applications.
3. No Moving Parts, Stable and Durable:
The sensor contains no internal moving parts or pressure sensing components, ensuring excellent shock resistance, immunity to vibration, and extended service life.
4. Simple Installation and Maintenance:
Especially with its insertable design, it allows for online installation and maintenance (enabling pressurized installation), requiring minimal construction effort and making it ideal for large-diameter pipelines.
5. Robust Environmental Adaptability:
🔹 Corrosion Resistance: Constructed from materials like 316 stainless steel or Hastelloy, suitable for measuring corrosive gases.
🔹 High-Temperature/Pressure Tolerance: Operates across media temperatures from -40°C to 510°C and pressures up to 4.0MPa or higher, handling demanding conditions.
6. Rich Intelligent Features:
🔹 Features one-touch zeroing and online current output calibration.
🔹 Supports multi-point nonlinear correction with built-in gas model algorithms for enhanced measurement accuracy.
🔹 Offers diverse output options including 4-20mA analog output, RS485 communication (supporting Modbus protocols), and relay alarms for seamless system integration.
Application Areas
RTU thermal mass flow meters play a critical role across multiple industrial and scientific fields due to their broad applicability:
1. Industrial Gas Measurement Compressed air, oxygen, nitrogen, hydrogen, chlorine, and multi-component gas measurement (excluding acetylene gas).
2. Energy and Fuels Natural gas, liquefied petroleum gas (LPG), and flare gas flow measurement; blast furnace gas and coke oven gas measurement.
3. Power Generation and Metallurgy Primary and secondary air flow measurement for blast furnaces in power plants.
4. Mining and Safety Real-time monitoring of air volume (velocity) in underground ventilation or exhaust systems; methane extraction monitoring and measurement.
5. Environmental Protection and Treatment Flue gas measurement; aeration and chlorine measurement in water treatment; biogas measurement.
6. Precision Manufacturing and Research Applications requiring stable flow measurement in gas analysis equipment, pharmaceutical production, food processing, and other sectors.
The RTU thermal mass flow meter stands as the preferred solution for industrial gas flow measurement, offering precise direct mass flow measurement, robust environmental adaptability, and convenient installation and maintenance. Whether in routine industrial process monitoring or demanding corrosive, high-temperature, or high-pressure environments, it delivers reliable, stable data support, empowering enterprises to achieve efficient energy management and precise process control
Reviews
There are no reviews yet.