Truflo® LSS Series Insertion Style
Plastic Paddle Wheel Flow Meter

Truflo® LSS Series Insertion Style Plastic Paddle Wheel Flow Meter


Industry’s Most Accurate Paddle Wheel Flow Meter


  • Large Display Changes from Green to Red When in Alarm State

  • Accuracy ± 0.75% Of Full Scale

  • Pipe Size (1/2 -24 Inch)

  • Flow Rate + Totalizer (Resettable-Insight On Volume Till Change Out)

  • Flow Velocity Range (0.33 to 26 Ft/S) (0.1 To 8 M/S)

  • Eprom Memory-Totalizer Value Will Not Be Lost

  • Nema 4X (IP66) Protection

  • Bright Led Display Flow Units– Litre, USGPM, M3, Ton

  • Dual Output Relays

  • 4-20mA Output Standard-(Track The 'Fill Rate' With Remote Display)

  • Heavy Duty Industrial Design

  • Corrosion Resistant All Plastic Wetted Parts-PVDF Body-Zirconium Ceramic Shaft-PFA Teflon Paddle

  • Simple Installation


Supply Voltage DC 14 to 28V
Measuring Accuracy ±0.75% Full Scale
Repeatability ±0.5% Full Scale
Input Sampling (Output Responses) Time 6 Cycles/Sec.
Readout Range 0~99999 (Flow Rate)
0~99999999 (Totalizer)
Relay Output Adjustable Set Points
Relay Contact Output DC 30V-3 Amp
Analog Output 4-20mA
Output Drive <10mA
Protection Class IP66 NEMA 4X
RS-485 Baud Rate 19200/9600/4800/2400 (selective)
RS-485 Protocol Modbus RTU Mode
Output Frequency 60.5Hz m/s Nominal (18.45Hz ft/s nominal)
(Max. 10Hz (totalizer last digit))
Pulse Output Type Transistor NPN Open-Collector
(Max. DC60V/100mA)
LED Display Bright Red or Green LED (0.4″ High)
Parameter Setting Push Button
Memory Mode Non-Volatile E2 PROM Memory
Sensor Body Material Natural PVDF
Rotor Material PFA Teflon
Shaft and Bearing Material Zirconium Cermaic (Zr02)
O-rings Material FKM (Viton)
Display Housing Materials Polymide 66 + PBT + 15% Glass Filled (UL94V-0)
Measuring Viscosity Range 0.5 to 20 Centi Stokes (cst)
Maximum Particle Size <10%(Particle) or <0.5mm2 (Max Particle Size)
Maximum Operating Pressure/Temperature PVDF Body (200 psi @ -30 C (-22 F) to 30°C (86F), Pressure/Temperature 36 psi @ 90°C (194F)
Storage Temp (-30 -22F) to 80°C (176F) (20 to 90RH Non-Condensed)
Certification EN 55022:1998/A1:2000 Class A

Truflo® LSS Series Data Sheet

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Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


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