Thermal Mass Flow
FS-618Split Thermal Mass Flow Meter
The FS-618 separates the sensor and display for installations where local access or environmental conditions favor a remote interface. MEMS sensing and optimized flow structure provide stable gas-flow measurement with reduced pressure loss.
Technical overview
Published configuration data
Values below describe catalog or typical configurations. The confirmed quotation and model code define the supplied specification.
- Flow coverage
- 0-1000 L/min
- Turndown
- 100:1
- Accuracy
- ±1.5% F.S.
- Pressure
- Up to 1.0 MPa
- Temperature
- -10 to 55°C
- Output
- 4-20 mA / RS485
Key characteristics
Why engineers consider FS-618
- Remote LCD display
- Improved zero stability
- Reduced pressure loss
- Multiple threaded connections
Typical applications
Where it fits
- 01Gas distribution panels
- 02Difficult-access pipelines
- 03Industrial utilities
- 04OEM skids
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-618
Application answers reviewed for compatibility, selection, installation and maintenance.
Why select the FS-618 split-type thermal gas mass flow meter over compact single-body meters?+
The FS-618 split-type design is advantageous when process piping is isolated inside enclosures or subjected to high ambient vibration. By separating the MEMS sensing block from the display controller, operators can monitor real-time gas flow and configure alarms safely from a remote panel. The FS-618 features improved full-scale zero-point stability compared to conventional thermal meters, with an accuracy rating of +/-1.5% FS and a 100:1 turndown ratio. Standard flow ranges span 0-100 L/min to 0-1000 L/min (0-60 m3/h). Its optimized internal flow channel significantly lowers pressure drop, saving compressor energy. Maximum pressure is rated up to 1.0 MPa. Cable extension limits and specific mounting hardware must be confirmed for the selected configuration. Submit your medium, flow range, pressure, temperature, viscosity, tube size, process connection, and required output.
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