Thermal Mass Flow
FS-615Inline Thermal Gas Mass Flow Meter
The FS-615 is an inline thermal mass flow meter for larger gas lines. It offers wide measuring ranges, no moving sensing parts and integrated or split installation for industrial gas and aeration systems.
Technical overview
Published configuration data
Values below describe catalog or typical configurations. The confirmed quotation and model code define the supplied specification.
- Flow coverage
- 10-4000 L/min by size
- Pipe range
- DN20-DN50
- Accuracy
- ±1% to ±2.5%
- Pressure
- Up to 3.0 MPa
- Response
- 1 s
- Protection
- IP64
Key characteristics
Why engineers consider FS-615
- Wide 1-100 Nm/s velocity range
- Integrated or split structure
- No moving parts
- 4-20 mA and RS485
Typical applications
Where it fits
- 01Aeration
- 02Industrial gas headers
- 03Combustion gas monitoring
- 04Utility pipelines
Selection checklist
Confirm these conditions before ordering.
Sending this information helps CurioSens verify the measurement principle, materials, range and interface.
- 01Process medium and composition
- 02Minimum, normal and maximum flow
- 03Operating pressure and temperature
- 04Pipe or tube size and process connection
- 05Required accuracy and response time
- 06Output, power supply and communication interface
Engineer-reviewed FAQ
Questions about FS-615
Application answers reviewed for compatibility, selection, installation and maintenance.
What pipe diameters and pressures are supported by the FS-615 inline thermal gas mass flow meter?+
The FS-615 inline thermal gas flow meter is engineered for pipe installations across DN20 to DN40 sizes, supporting flow rates from 10-1000 L/min (0.6-60 m3/h) for DN20 up to 40-4000 L/min (2.4-240 m3/h) for DN40. Its wide measurable velocity range of 1 to 100 Nm/s enables high-sensitivity gas leak detection. Constructed with 316 stainless steel or aluminum body options, the sensor tolerates fluid pressures up to 3.0 MPa and sensor temperatures from -40°C to +250°C. Accuracy is rated at +/-1 to 2.5%. Non-stop hot-tap installation options require special customization, so installation method must be confirmed for the selected configuration. Send your gas medium, flow range, pressure, temperature, viscosity, tube size, process connection, and required output for confirmation.
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