Every stroke of an AODD pump delivers a discrete pulse of fluid. This is not a defect — it is the fundamental operating principle of any positive displacement pump. But...
Pyxis FS-Series Flow Meters
Flow Meters
Real-Time Flow Rate Measurement & Control for Sample Lines
The Pyxis FS-Series measures flow by ultrasonic transit-time difference — no moving parts to foul or wear. Each unit pairs a live local display and trend chart with dual 4–20mA outputs, one for flow rate and one to drive a regulating valve or dosing pump directly, plus an isolated RS-485 Modbus-RTU signal for SCADA integration. Two flow ranges (0–3,000mL/min and 0–10,000mL/min) are each available in a standard water-wetted build or a corrosive-solution-wetted build, covering both clean water sample loops and aggressive chemical feed lines.
No moving parts — ultrasonic transit-time measurement avoids the wear and fouling of paddlewheel or turbine flow sensors
Closed-loop flow control — integrated PID output can directly drive a 4–20mA regulating valve or dosing pump to hold a user-defined flow rate
Water and corrosive-solution variants — PPS/GF polymer/fluorine rubber wetted parts rated for aggressive chemical feed lines
Built-in temperature compensation — automatic correction keeps readings accurate as sample temperature varies
Browse by Application
All Flow Meters
Water · Standard Range
Pyxis FS-100
0–3,000mL/min · UPVC/PPS Wetted
Ultrasonic transit-time flow meter for water sample lines. Live local display with real-time flow trend chart, dual 4-20mA outputs and RS-485 Modbus-RTU. Built-in temperature compensation.
Water · High Range
Pyxis FS-200
0–10,000mL/min · UPVC/PPS Wetted
Higher-range version of the FS-100 for larger water sample flows. Integrated PID output can directly drive a 4-20mA regulating valve or dosing pump to hold a user-defined flow rate.
Corrosive · Standard Range
Pyxis FS-101
0–3,000mL/min · PPS/Fluorine Rubber Wetted
Corrosive-solution-wetted variant of the FS-100 — PPS plastic, GF polymer and fluorine rubber wetted parts for aggressive chemical feed and dosing lines.
Corrosive · High Range
Pyxis FS-201
0–10,000mL/min · PPS/Fluorine Rubber Wetted
Higher-range corrosive-solution variant of the FS-101, for larger aggressive chemical feed flows requiring the same closed-loop PID flow control.