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Proline t-mass B 150
Thermal mass flowmeter

The flowmeter for cost-effective measurement and easy monitoring of utility gases

  • Thermal mass flowmeter - Proline t-mass B 150 ©Endress+Hauser
  • The Thermal Flow Measuring Principle

The t-mass B 150 insertion version is suitable for large pipelines or rectangular ventilation ducts. It is designed for the cost-effective measurement of utility gases, in particular compressed air. It is a trending device aimed at sub-metering applications. Its 4-wire technology is contained within a rugged compact aluminum housing. Customer-specific settings are saved on the display and can be transferred from one device to another by means of the display.


  • Suitable for air, nitrogen, carbon dioxide and argon in circular piping or rectangular ducts

  • Optimal process monitoring – easy measurement even at low pressures and flow velocities

  • Cost-effective measurement – easy installation, negligible pressure loss and maintenance-free

  • Reliable flow trending – multivariable measurement

  • Fast and efficient commissioning – guided operating menus

  • High plant availability – self-diagnostics and error monitoring

  • Automatic recovery of data for servicing

Field of application

  • Measuring principle is characterized by a high operable flow range and direct mass flow measurement

  • Suitable for air, nitrogen, carbon dioxide and argon in circular piping or rectangular ducts.

Device properties

  • Insertion version for nominal diameter DN 80 to 1500 (3 to 60")

  • Installation and removal of sensor without process interruption

  • Easy installation

  • Device in compact version with DC 24 V power supply

  • 4-20 mA HART, pulse/frequency/switch output

  • Compact and robust transmitter

Features and specifications

Documents / Manuals / Software

Accessories / Spare parts

Predecessor / Successor

Predecessor: t-trend ATT12, t-trend ATT12A

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