At Metlan Instruments, we understand that precise and reliable gas flow measurement is critical to the success of your operation. That’s why our Thermal Mass Flow Meters are designed to outperform in demanding industrial environments — where safety, accuracy, and long-term stability matter most.
What Makes Our Thermal Mass Flow Meters Different?
1. Wide Measuring Range with Ultra-Low Flow Capability
Our flow meters feature an exceptionally wide turndown ratio of 1:2500, enabling accurate measurement from as low as 0.1 Nm/s up to 250 Nm/s. This makes them ideal for applications with highly variable or extremely low flow rates — including bypass lines, leakage detection, and single-equipment gas consumption.
2. Explosion-Proof and IP67-Rated
Certified for hazardous areas with explosion-proof classifications Ex db IIC T6 Gb / Ex tb IIIC T80°C Db, these meters are built to operate safely in challenging conditions. The robust IP67 enclosure protects against dust and water ingress, ensuring reliable performance in outdoor or wet environments.
3. Integrated Chip-based Sensors
Unlike other thermal mass flow meter suppliers who use dual-probe sensors encased in domestic thermal conductive adhesive, which often results in data drift over time, our integrated chip-based design ensures long-term stability and measurement precision.
4. Advanced Full-Digital Signal Processing
Metlan Instruments flow meters use full-digital signal processing to deliver higher accuracy, improved zero-point stability, and long-term drift resistance. With a typical accuracy of ±(1.5% RD + 0.3% FS) (and a high-accuracy option of ±1% RD), you can trust the data for both monitoring and control.
5. Flexible Communication and Display Options
Our thermal mass flow meters support a range of outputs including 4–20 mA, pulse, and Modbus RTU (RS485). Wireless communication via Bluetooth is standard, with optional Wi-SUN or 4G modules for remote monitoring. The built-in 2.0” IPS color touchscreen display provides clear readings and convenient touch control.
6. Intelligent Sensor Diagnostics
With built-in intelligent diagnostic capabilities, our flow meters can detect sensor contamination or overheating before it impacts measurement accuracy. This proactive protection helps reduce maintenance needs and extends service life.
7. OEM Service
We’re proud to support OEM customization at Metlan Instruments, with a minimum order quantity of only one.
With superior measurement technology, industrial-grade construction, and intelligent features, Metlan’s Thermal Mass Flow Meters deliver reliable performance where it counts. Whether you’re managing compressed air, natural gas, oxygen, or specialty gases — you can count on us to help you measure with confidence.
