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Field of application
The patented sensor design of t-mass I provides unprecedented measurement stability in thermal insertion mass flow measurement. It compensates in real time for changes of process conditions: temperature, pressure, flow direction and gas type. Its compact transmitter offers high flexibility in terms of operation and system integration: access from one side, remote display and improved connectivity options. Heartbeat Technology enables measurement reliability and compliant verification.
Measuring principle is characterized by a high operable flow range and direct mass flow measurement
Measurement of utility and process gases and gas mixtures in circular piping or rectangular ducts
Device properties
Insertion version for DN 80 to 1500 (3 to 60")
Bidirectional measurement; high measuring performance
Patented drift-free sensor with SIL 2
Compact dual-compartment housing with up to 3 I/Os
Backlit display with touch control and WLAN access
Remote display available
Benefits
Flexible, convenient programming based on 21 standard gases or freely definable gas mixtures thereof
High level of process control – premium measurement accuracy and repeatability
Reliable monitoring – detection of process disturbances and reverse flow
Flexible installation – suitable for large dimensional range and circular pipes or rectangular ducts
Full access to process and diagnostic information – numerous, freely combinable I/Os and fieldbuses
Reduced complexity and variety – freely configurable I/O functionality
Integrated verification – Heartbeat Technology
Videos
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Proline t-mass F/I 300/500 – The thermal mass flowmeter with long-term stability and a keen sense for utility gases
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The Thermal Flow Measuring Principle
Extended selection
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High-end products
- Highly functional and convenient
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
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Fundamental selection Meet your basic measurement needs |
Technical excellence
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Simplicity
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Lean selection Handle your core processes easily |
Technical excellence
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Simplicity
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Extended selection Optimize your processes with innovative technologies |
Technical excellence
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Simplicity
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Xpert selection Master your most challenging applications |
Technical excellence
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Simplicity
Variable |
Success stories
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Technical Information (TI)
TI Proline t-mass I 300
English version - 07/2023
New version available in English
Thermal mass flowmeter
EN 28/07/202305/07/202117/09/2020Language:
English
Version:
28/07/2023
File size:
5.4 MB
File name:
TI01501DEN_0323-00.pdf
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Operating Instruction (BA)
BA Proline t-mass I 300
English version - 07/2023
New version available in English
Thermal mass flowmeter HART
EN 28/07/202305/07/202117/09/2020Language:
English
Version:
28/07/2023
File size:
7.7 MB
File name:
BA01993DEN_0323-00.pdf
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Technical Information (TI)
TI Proline t-mass I 300
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Technical Information (TI)
English version - 07/2023Thermal mass flowmeter
EN 28/07/202305/07/202117/09/2020Language:
English
Version:
28/07/2023
File size:
5.4 MB
File name:
TI01501DEN_0323-00.pdf
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Operating Instruction (BA)
BA Proline t-mass I 300
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Operating Instruction (BA)
English version - 07/2023Thermal mass flowmeter
Modbus RS485EN 28/07/202305/07/202117/09/2020Language:
English
Version:
28/07/2023
File size:
6.8 MB
File name:
BA01995DEN_0323-00.pdf
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Operating Instruction (BA)
BA Proline t-mass I 300
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Operating Instruction (BA)
English version - 07/2023Thermal mass flowmeter
HARTEN 28/07/202305/07/202117/09/2020Language:
English
Version:
28/07/2023
File size:
7.7 MB
File name:
BA01993DEN_0323-00.pdf
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Device Parameter (GP)
Proline t-mass 300 HART
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Device Parameter (GP)
English version - 07/2021Thermal mass flowmeter
EN 01/07/202117/09/2020Language:
English
Version:
01/07/2021
File size:
2.1 MB
File name:
GP01143DEN_0221.pdf
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Device Parameter (GP)
GP Proline t-mass 300 Modbus RS485
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Device Parameter (GP)
English version - 03/2024Thermal mass flowmeter
EN 15/03/202401/07/202117/09/2020Language:
English
Version:
15/03/2024
File size:
2.4 MB
File name:
GP01144DEN_0324-00.pdf
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Short Instruction (KA)
Proline t-mass I
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Short Instruction (KA)
English version - 07/2021Thermal mass flow sensor
EN 05/07/202117/09/2020Language:
English
Version:
05/07/2021
File size:
1 MB
File name:
KA01443DEN_0221.pdf
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Short Instruction (KA)
Proline 300 Modbus RS485
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Short Instruction (KA)
English version - 07/2021Transmitter with thermal mass flow sensor
EN 05/07/202117/09/2020Language:
English
Version:
05/07/2021
File size:
2 MB
File name:
KA01445DEN_0221.pdf
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Short Instruction (KA)
Proline 300 HART
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Short Instruction (KA)
English version - 07/2021Transmitter with thermal mass flow sensor
EN 05/07/202117/09/2020Language:
English
Version:
05/07/2021
File size:
1.9 MB
File name:
KA01444DEN_0221.pdf
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Installation Instructions (EA)
EA Flow conditioner
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Installation Instructions (EA)
English version - 10/2024t-mass I 300, 500-digital
EN 15/10/202431/07/2020Language:
English
Version:
15/10/2024
File size:
495.7 KB
File name:
EA01282DA2_0224-00.pdf
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Installation Instructions (EA)
Hot tap
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Installation Instructions (EA)
English version - 07/2021t-mass I 300, 500-digital
EN 01/07/202131/07/2020Language:
English
Version:
01/07/2021
File size:
1.8 MB
File name:
EA01288DA2_0221.pdf
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