Truflo TK3M Series Paddle Wheel Flow Meter Sensor
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The TK3M Paddle Wheel Flow Meter by Icon Process Controls is a high-precision industrial flow sensor for liquid measurement. Featuring a 316SS body, 4-20mA output, and a 360° rotatable LED display, it delivers ±0.5% accuracy for applications like wastewater monitoring.

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OVERVIEW
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SPECIFICATIONS
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MODEL NUMBERS
Manufacturer: Icon Process Controls
Product Type: In-Line Paddle Wheel Flow Meter Sensor
Applications: Liquid flow measurement, filtration systems, water and wastewater monitoring, industrial liquid distribution, process skids, liquid consumption tracking, discharge verification
Key Features:
High-precision TK3M Paddle Wheel Flow Meter for industrial liquid monitoring
Exceptional accuracy of ±0.5%, leading the industry standard
316 stainless steel body for durability in harsh environments
Tefzel® paddle wheel with zirconium ceramic rotor and bushings
Bright LED display with 360° rotation, showing flow rate and total
4-20mA output for seamless integration with control systems
Life-time warranty on the paddle assembly for reliability
Technical Specifications | |
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Operating Range | 0.3 to 3 ft/s (0.1 to 10 m/s) |
Pipe Size Range | 3/8″ to 12″ (DN10 to DN300) |
Linearity | ±0.5% of FS @ 25°C (77°F) |
Repeatability | ±0.05% of FS @ 25°C (77°F) |
Sensor Body Materials | PVC (Dark), PP (Pigmented), PVDF (Natural), 316SS |
Rotor | PVDF, ECTFE, 316SS |
Rotor Pin, Bushings | Zirconium Ceramic (ZrO2) |
Sensor Seal | ETFE Tefzel® |
Frequency Range | 40 Hz per ft/s nominal | 15 Hz per ft/s nominal |
Supply Voltage | 5 to 24 VDC unregulated | 20 mA @ 6 to 26 VDC |
Supply Current | ≤15 mA @ 3.15 to 6 VDC |
Max Temp / Pressure |
PVC: 180 PSI @ 68°F | 40 PSI @ 140°F PP: 150 PSI @ 68°F | 100 PSI @ 140°F PVDF: 200 PSI @ 68°F | 80 PSI @ 300°F 316SS: 290 PSI @ 68°F | 180 PSI @ 300°F |
Operating Temperature |
PVC: 32°F to 140°F (0°C to 60°C) PP: -4°F to 176°F (-20°C to 80°C) PVDF: -40°F to 300°F (-40°C to 150°C) 316SS: -40°F to 300°F (-40°C to 150°C) |
Outputs | NPN Pulse | RS485 |
Display | LED Flow Rate + Flow Totalizer |
Standards and Approvals | UL Rec., CE, RoHS Compliant |
PVC – Model Selection | ||
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Size | End Connections | Part Number |
¾″ | Sch 80 Soc | TKM-15-P |
1″ | Sch 80 Soc | TKM-20-P |
1¼″ | Sch 80 Soc | TKM-25-P |
1½″ | Sch 80 Soc | TKM-40-P |
2″ | Sch 80 Soc | TKM-50-P |
3″ | Flanged | TKM-80-P |
4″ | Flanged | TKM-100-P |
PP – Model Selection | ||
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Size | End Connections | Part Number |
½″ | NPT | TKM-15-PP |
¾″ | NPT | TKM-20-PP |
1″ | NPT | TKM-25-PP |
1¼″ | NPT | TKM-40-PP |
2″ | NPT | TKM-50-PP |
3″ | Flanged | TKM-80-PP |
4″ | Flanged | TKM-100-PP |
PVDF – Model Selection | ||
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Size | End Connections | Part Number |
½″ | NPT | TKM-15-PF |
¾″ | NPT | TKM-20-PF |
1″ | NPT | TKM-25-PF |
1½″ | NPT | TKM-40-PF |
2″ | NPT | TKM-50-PF |
316 SS – Model Selection | ||
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Size | End Connections | Part Number |
½″ | NPT | TKM-08-SS |
¾″ | NPT | TKM-10-SS |
1″ | NPT | TKM-15-SS |
1¼″ | NPT | TKM-25-SS |
1½″ | NPT | TKM-40-SS |
2″ | NPT | TKM-50-SS |
3″ | NPT | TKM-80-SS |
4″ | NPT | TKM-100-SS |