Specs at a glance
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Max. measurement error
3 % o.r.
4 % o.r.
5 % o.f.s.
(depending on chosen option of ordering feature "Calibration flow") -
Measuring range
20 to 720 000 kg/h (45 to 1 587 600 lb/h)
20 to 1 080 000 kg/h (45 to 2 381 400 lb/h)
(for air, depending on chosen option of ordering feature "Calibration flow") -
Medium temperature range
–40 to +100 °C (–40 to +212 °F)
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Max. process pressure
20 bar g (290 psi g)
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Wetted materials
Transducer: 1.4404 (316L)
Insertion tube: 1.4404 (316L); 1.4435 (316L)
Connection:
Compression fitting: 1.4404 (316L)
Sealing ring: EPDM; HNBR; 1.4401 (316)
Clamping ring: PEEK 450G
Field of application
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.
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
Benefits
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
Videos
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The Thermal Flow Measuring Principle
Lean selection
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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
-
Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
Predecessor
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Measuring principle
Thermal
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Product headline
The flowmeter for cost-effective measurement and easy monitoring of utility gases.
Suitable for air, nitrogen, carbon dioxide and argon in circular piping or rectangular ducts. -
Sensor features
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.
Insertion version for nominal diameter DN 80 to 1500 (3 to 60"). Installation and removal of sensor without process interruption. Easy installation. -
Transmitter features
Fast and efficient commissioning – guided operating menus. High plant availability – self‐diagnostics and error monitoring. Automatic recovery of data for servicing.
Device in compact version with DC 24 V power supply. 4-20 mA HART, pulse/frequency/switch output. Compact and robust transmitter. -
Nominal diameter range
DN 80 to 1500 (3 to 60")
-
Wetted materials
Transducer: 1.4404 (316L)
Insertion tube: 1.4404 (316L); 1.4435 (316L)
Connection:
Compression fitting: 1.4404 (316L)
Sealing ring: EPDM; HNBR; 1.4401 (316)
Clamping ring: PEEK 450G -
Measured variables
Mass flow, temperature, corrected volume flow, FAD volume flow
-
Max. measurement error
3 % o.r.
4 % o.r.
5 % o.f.s.
(depending on chosen option of ordering feature "Calibration flow") -
Measuring range
20 to 720 000 kg/h (45 to 1 587 600 lb/h)
20 to 1 080 000 kg/h (45 to 2 381 400 lb/h)
(for air, depending on chosen option of ordering feature "Calibration flow") -
Max. process pressure
20 bar g (290 psi g)
-
Medium temperature range
–40 to +100 °C (–40 to +212 °F)
-
Ambient temperature range
–40 to +60 °C (–40 to +140 °F)
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Transmitter housing material
AlSi10Mg, coated
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Degree of protection
IP66/67, type 4X enclosure
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Display/Operation
4‐line display with push Buttons
Configuration via local display and operating tools possible -
Outputs
4‐20 mA HART (active)
Pulse/frequency/switch output (passive) -
Inputs
Status input
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Digital communication
HART
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Power supply
DC 18 to 30 V
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Hazardous area approvals
ATEX, IECEx, cCSAus
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Metrological approvals and certificates
Calibration performed on accredited calibration facilities (acc. to ISO/IEC 17025), NAMUR
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Pressure approvals and certificates
CRN
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