FS-100/101 Series Ultrasonic Flow Meters

Inline Installation Alternative.

Flowmeters that operate on the principle of transit time difference with a measurement range of 0–3,000 mL/min and resolution of 1mL.

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The new FS-100 series are state-of-the-art ultrasonic flowmeters that operate on the principle of transit time difference with a measurement range of 0 – 3,000 mL/min and resolution of 1mL. In this flow measurement method, the propagation speed of ultrasonic waves downstream is faster than upstream, and the transit time difference is directly proportional to the flow rate.

The FS-100 series flow meter is perfectly suited for flow measurement and is offered in two liquid end materials of construction, for standard water and highly corrosive aqueous solution metering applications. The sensors advanced PCB design offers built-in temperature compensation to eliminate the effect of temperature with instantaneous, accumulated, and controlled water flow based on user setpoint within the sensor itself.

The FS-100 series flow meter is powered by a 24 VDC/1 W power supply and provides both 4–20 mA and RS-485 Modbus output signals for connection to any OEM controller, PLC or DCS.


Item FS-100/101
Wet End Material FS-100: UPVC
FS-101: Ryton PPS + GF Polymer
Supported Fluid FS-100: Liquids (Water)
FS-101: Corrosive Aqueous Solution
Fluid Temp. 4–49 ºC (40–120 ºF), ±0.02 º
Inlet Pressure 7.25–100psi (0.05–0.689MPa)
Inlet/Outlet 1/4in OD & 1/2in FNPT
Flow Path Inner Dia. 5mm
Rated Flow Range 0–3,000mL/min
Resolution 1mL/min
MAX Error ±1% of the Value
Display 1.44″ Color 128×128 Resolution
Analog Outputs #1 4–20mA for Flow Rate, #2 4-20mA for Regulating Valve
Digital Outputs RS-485 Modbus
Power Supply 24V DC, 1W
Operational Temp. 32–122 ºF (0–50 ºC)
Storage Temp. -4–158 ºF (-20–70 ºC)
Dimension 170mm H x 50mm W x 61.5mm D
Weight ~600g
Humidity 5-95%
Protection IP65
Regulation CE/RoHS

Support Documents

FS-100 Series Ultrasonic Flow Meter User Manual -V1.11

FS-100 Series – Data Sheet


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