Key Product Highlights — Truflo TK3M (316 SS) Digital In-Line Flow Meter
1) 316 Stainless Steel Wetted Construction for Demanding Service
- 316 SS sensor body for robust mechanical strength and broad process compatibility
- Suitable for corrosive liquid applications when paired with appropriate elastomer selection
2) High Accuracy with a Wide Dynamic Flow 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)
- Intended for full-pipe liquid flow measurement
3) Flow + Total Local Indication with a 360° Rotating Display
- Bright LED display shows flow rate + flow totalizer
- 360° rotation improves readability regardless of installation orientation
- Pre-programmed configuration supports quick installation (no programming required)
4) Output Flexibility for Control and Monitoring
- NPN pulse outputs plus 4–20 mA capability
- Optional 0–5 V voltage output (where specified)
- Signal options support both simple monitoring and automation integration
5) ShearPro® Paddle Wheel + Wear-Resistant Internals for Long Life
- ShearPro® contoured profile reduces turbulence and increases longevity
- ETFE (Tefzel®) paddle wheel for chemical and wear resistance
- Zirconium ceramic rotor pin/bushings for high wear resistance and reduced fatigue stress
Technical Specifications — Truflo TK3M (316 Stainless Steel)
| Parameter | Specification |
|---|---|
| Product Type | Digital in-line paddle wheel flow meter sensor (316 SS body) |
| Operating Range | 1–33 ft/s (0.3–10 m/s) |
| Pipe Size Range | ¼”–4″ (note: ¼”–¾” SS only per datasheet note) |
| 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, 4–20 mA, optional 0–5 V |
| Frequency (nominal) | 49 Hz per m/s; 15 Hz per ft/s |
| Supply Voltage | 10–30 VDC ±10% regulated |
| Wetted Body Material | 316 stainless steel |
| 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 |
| 316 SS Pressure/Temperature (Non-Shock) | 200 psi @ 180°F; 40 psi @ 300°F (14 bar @ 82°C; 2.7 bar @ 148°C) |
| 316 SS Operating Temperature | -40°F to 300°F (-40°C to 148°C) |
| Standards & Approvals | UL, NSF, CE, RoHS compliant |
| Notes | K-factor is pre-programmed; lifetime warranty applies to paddle wheel assembly (per datasheet statement) |
Suitable Applications — Truflo TK3M (316 SS) Flow + Total with Pulse / Analog Outputs
The TK3M is well suited to industrial process lines that benefit from 316 stainless steel wetted construction, local flow + total indication, and flexible outputs for automation. Its durability-focused rotor design and sealed enclosure make it a strong choice for harsh environments and long-duty cycles.
- Corrosive chemical transfer and distribution systems requiring 316 SS wetted components
- Process skids needing local flow + total plus pulse and/or analog signaling to PLC/DCS
- Utility water and industrial water monitoring where rugged enclosure protection is required
- Filtration and recirculation loops requiring stable, repeatable flow measurement
- OEM equipment builds where pre-programmed installation reduces commissioning time
- Applications requiring optional end-connection styles (e.g., sanitary or ANSI flange, consult factory per model selection notes)