Key Product Highlights — Truflo TK3P Series
1) Flow + Total Local Indication with 360° Rotating LED Display
- Bright LED display shows flow rate and flow totalizer
- Display rotates 360° for readability in any mounting orientation
- Pre-programmed configuration supports quick installation with no programming
2) Dual NPN Pulse Outputs plus Optional RS485 Communications
- Standard NPN pulse for flow rate and totalizer outputs (per wiring diagram)
- Optional RS485 communication output available (noted as a special order item)
- Wiring supports flexible integration into control, monitoring, and totalization systems
3) High Accuracy Across a Wide Operating Range
- Operating range: 1–33 ft/s (0.3–10 m/s)
- ±0.5% F.S. linearity and ±0.5% F.S. repeatability @ 25°C (77°F)
- Designed for stable measurement in full-pipe liquid service
4) ShearPro® Paddle Wheel Durability with Wear-Resistant Internals
- ShearPro® contoured flow profile reduces turbulence and increases longevity
- ETFE (Tefzel®) paddle wheel for chemical and wear resistance
- Zirconium ceramic (ZrO2) rotor pin/bushings for high wear resistance and reduced fatigue stress
5) Material and Connection Flexibility for Corrosive Process Piping
- Body materials: PVC, PP, PVDF, and 316 stainless steel
- True-union design (½”–2″) and flanged versions (3″–4″)
- NEMA 4X / IP66 protection plus password-protected security
Technical Specifications
| Parameter | Specification |
|---|---|
| Operating Range | 1–33 ft/s (0.3–10 m/s) |
| Pipe Size Range | ¼”–4″ (note: ¼”–¾” SS only) |
| Linearity | ±0.5% of full scale @ 25°C (77°F) |
| Repeatability | ±0.5% of full scale @ 25°C (77°F) |
| Display | LED: Flow rate + flow totalizer (rotates 360°) |
| Outputs | NPN pulse (flow + totalizer), RS485 (optional) |
| Frequency (nominal) | 49 Hz per m/s; 15 Hz per ft/s |
| Supply Voltage | 9–30 VDC ±10% regulated |
| Supply Current | <1.5 mA @ 3.3–6 VDC; <20 mA @ 6–24 VDC |
| Wetted Body Materials | PVC (dark), PP (pigmented), PVDF (natural), 316 SS |
| O-Rings | FKM (standard); EPDM (optional); FFKM (optional) |
| Rotor Pin / Bushings | Zirconium ceramic (ZrO2) |
| Paddle / Rotor | ETFE (Tefzel®), ShearPro® design |
| Enclosure Rating | NEMA 4X / IP66 |
| Pressure/Temperature (Non-Shock) | PVC: 180 psi @ 68°F; 40 psi @ 140°F. PP: 180 psi @ 68°F; 40 psi @ 190°F. PVDF: 200 psi @ 68°F; 40 psi @ 240°F. 316 SS: 200 psi @ 180°F; 40 psi @ 300°F. |
| Operating Temperature | PVC: 32–140°F (0–60°C); PP: -4–190°F (-20–88°C); PVDF: -40–240°F (-40–115°C); 316 SS: -40–300°F (-40–148°C) |
| Standards & Approvals | UL, NSF, CE, RoHS compliant |
| Notes | K-factor is pre-programmed; RS485 noted as optional/special order |
Suitable Applications — Truflo TK3P Series (Pulse + RS485, Flow + Total Indication)
The TKP | TK3P Series is ideal for processes that need local flow and total display plus pulse outputs for totalization, with the option to add RS485 communications for networked monitoring. Its chemical-resistant material options and sealed enclosure support reliable performance in harsh industrial areas.
- Chemical distribution and transfer lines (corrosive service with appropriate material/seal selection)
- Skid systems needing flow rate + total at the point of use plus pulse totalization to a PLC/RTU
- Water and wastewater treatment process lines and utility water monitoring
- OEM equipment requiring a pre-programmed in-line sensor with flexible outputs
- Industrial environments requiring NEMA 4X / IP66 protection (washdown/outdoor areas)
- Networked monitoring applications where RS485 is preferred for communications (optional/special order)