Thermal mass flow meter Proline t-mass A 150
for gasfor compressed airin-line

thermal mass flow meter
thermal mass flow meter
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thermal mass
for gas, for compressed air
stainless steel, aluminum
4-20 mA
Supply voltage
Protection level
Other characteristics
compact, with display, economical, custom
Process pressure

Max.: 40 bar (580.15 psi)

Min.: -0.5 bar (-7.25 psi)

Process temperature

Max.: 100 °C (212 °F)

Min.: -40 °C (-40 °F)


The t-mass A 150 inline device is specially 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. It is orderable either with display or as a blind version. Customer-specific settings are saved on the display and can be transferred from one device to another by means of the display. Measuring principle is characterized by a high operable flow range and direct mass flow measurement Suitable for air, nitrogen, carbon dioxide and argon in small line sizes. Device properties Inline version: nominal diameter DN 15 to 50 (1/2 to 2") Process pressure up to PN 40, Class 300 A variety of process connections available Device in compact version with DC 24 V power supply 4-20 mA HART, pulse/frequency/switch output Compact and robust transmitter Benefits Suitable for air, nitrogen, carbon dioxide and argon in small line sizes 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



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