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E+H t-mass B 150 High-Accuracy Thermal Mass Flow Meter
6BABL1-AADACAASAGA1G+AK
The Thermal Mass Flow Meter (t-mass B 150 Series) provides cost-effective and precise direct mass flow measurement for compressed air and industrial utility gases without requiring extra temperature or pressure compensation. Engineered for high operational efficiency, it features negligible pressure loss, an extraordinary turndown ratio, and robust sensor design, making it the ideal solution for energy management, sub-metering, and leak detection in modern industrial facilities.Accurately measures both ultra-low leaks and high flow rates. Minimal pressure drop saves blower/compressor energy costs.Pre-configured factory calibration for quick commissioning.
Reliable & Economic Flow Measurement for Utility Gas Systems
In industrial plants, unmeasured utility gases—especially compressed air, nitrogen, carbon dioxide, and natural gas—account for significant energy waste. The t-mass B 150 Thermal Mass Flow Meter is specifically developed to deliver reliable, high-precision gas flow monitoring tailored for sub-metering and energy management applications.
Operating on the thermal dispersion principle, the sensor consists of two temperature resistance sensors (RTDs). One sensor measures the ambient gas temperature, while the other is heated to a constant differential temperature above the gas. As gas flows past the heated sensor, heat is carried away proportional to the mass flow rate. The instrument calculates mass flow directly based on the cooling effect, delivering immune performance against fluctuations in line pressure and operating temperature.
Traditional volumetric flow meters require complex pressure and temperature compensation loops to calculate true mass flow. The t-mass B 150 simplifies your process loop, reduces installation costs, and eliminates multiple potential points of failure. Its high dynamic range allows plant operators to audit compressed air lines for costly night leaks during non-production hours while accurately accounting for high-demand production shifts.
Frequently Asked Questions
Q1: Why choose a thermal mass flow meter over a vortex or differential pressure flow meter for gas?
A: Thermal mass flow meters measure mass flow directly without needing separate pressure and temperature transmitters or flow computers. They also offer a much higher turndown ratio (up to 100:1) and negligible pressure loss, making them significantly more accurate and cost-effective for utility gases and compressed air.
Q2: Can this flow meter be installed in moist or humid compressed air lines?
A: Thermal mass flow meters perform best in clean, dry gas streams. While condensed water droplets do not damage the robust stainless steel sensor, water droplets touching the heated element can cause temporary spikes in reading. Installing the meter downstream of air dryers or using proper moisture traps is recommended.
Q3: What straight pipe length is required for installation?
A: Generally, an upstream straight pipe length of 15–20 times the pipe diameter ($15\text{D}-20\text{D}$) and a downstream length of $5\text{D}$ are recommended to ensure a fully developed velocity profile for optimum accuracy.
Q4: Do you offer custom process connections and OEM/ODM calibration?
A: Yes! As a leading manufacturer of flow measurement instruments, we support customized thread/flange connections, tailored gas mixture calibrations, and flexible OEM/ODM options for international distributors and system integrators.
Spécifications techniques
| Sensor Characteristics | Cost‐effective measurement – easy installation, negligible pressure loss and maintenance‐free. Insertion version for nominal diameter DN 80 to 1500 (3 to 60"). Installation and removal of sensor without process interruption. Easy installation. |
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| Transmitter Features | Fast and efficient commissioning – guided operating menus. High plant availability – self‐diagnostics and error monitoring. Device in compact version with DC 24 V power supply. 4-20 mA HART, pulse/frequency/switch output. Compact and robust transmitter. |
| Nominal Diameter | DN 80...1500 (3...60") |
| Material of Wetted Parts | Ultrasonic sensor: 1.4404 (316L) Insertion tube: 1.4404 (316L), 1.4435 (316L) Connection: Compression fitting: 1.4404 (316L) Seal: EPDM, HNBR, 1.4401 (316) Collet: PEEK 450G |
| Measurement Variables | Mass flow rate, temperature, corrected volumetric flow rate, FAD volumetric flow rate |
| Maximum Measurement Error | 3% of reading 4% of reading 5% of full scale (Depending on the selection code for the "Calibrated Flow" ordering option) |
| Measuring Range | 20...720,000 kg/h (45...1,587,600 lb/h) 20...1,080,000 kg/h (45...2,381,400 lb/h) (Applicable to air; depends on the selection code for the "Calibrated Flow" ordering option) |
| Maximum Process Pressure | 20 bar g (290 psi g) |
| Medium Temperature Range | –40...+100 °C (–40...+212 °F) |
| Ambient Temperature Range | –40...+60 °C (–40...+140 °F) |
| Sensor Housing Material | With AlSi10Mg aluminum alloy coating |
| Protection Level | IP66/67，Type 4X |
| Display/Operation | Four-line display; push-button operation Configuration via local display unit and commissioning software |
| Output | 4–20 mA HART (active) Pulse/frequency/switch output (passive) |
| Input | Status Input |
| Digital Communication | HART |
| Power supply | 18...30 VDC |
| Explosion-proof Certification | ATEX、IECEx、cCSAus |
| Metrological accreditation and certification | :Calibration on accreditation calibration devices (compliant with ISO/IEC 17025 standards), NAMUR |
| Pressure Certification and Certificate | CRN |
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