Key Product Highlights — Truflo TKM | TK3M Series
1) High-Accuracy Flow Measurement with Wide Dynamic Range
- ±0.5% of full-scale linearity and ±0.5% repeatability @ 25°C (77°F)
- Wide operating velocity range: 1–33 ft/s (0.3–10 m/s)
- Designed for measuring liquid flow in full pipes
2) Multi-Signal Outputs for Automation and Control
- Outputs include NPN pulse and 4–20 mA for PLC/DCS integration
- Optional 0–5 V voltage output for systems requiring analog voltage signals
- Supports both flow rate and totalization signaling (per wiring/output configuration)
3) Flow + Total Local Indication with Rotating Display
- Bright LED display indicates flow rate + flow totalizer
- 360° rotating display improves readability regardless of install orientation
- Pre-programmed configuration enables quick installation (no programming required)
4) ShearPro® Paddle Wheel and Wear-Resistant Internals
- Contoured ShearPro® profile reduces turbulence and increases longevity
- ETFE (Tefzel®) paddle wheel offers strong chemical and wear resistance
- Zirconium ceramic rotor pin/bushings (ZrO2) provide high wear resistance and reduced fatigue stress
5) Chemical-Resistant Construction with Industrial Protection
- Body options: PVC (dark), PP (pigmented), PVDF (natural), and 316 SS
- NEMA 4X / IP66 enclosure with low pressure drop design
- True-union design (½”–2″) and flanged connection (3″–4″) for service-friendly installation
Technical Specifications — Truflo TKM
| Parameter | Specification |
|---|---|
| Measurement / Display | LED display: Flow rate + flow totalizer (360° rotatable) |
| Operating Range | 1–33 ft/s (0.3–10 m/s) |
| Pipe Size Range | ¼”–4″ (¼”–¾” SS only) |
| Linearity (Accuracy) | ±0.5% of full scale @ 25°C (77°F) |
| Repeatability | ±0.5% of full scale @ 25°C (77°F) |
| Wetted Body Materials | PVC, PP, PVDF, 316 SS |
| Seal Materials | FKM (standard), EPDM (optional), FFKM/Kalrez® (optional) |
| Rotor Pin / Bushings | Zirconium ceramic (ZrO2) |
| Paddle / Rotor | ETFE (Tefzel®), ShearPro® contoured design |
| Outputs | NPN pulse, 4–20 mA, optional voltage (0–5 V) |
| Frequency (nominal) | 49 Hz per m/s; 15 Hz per ft/s |
| Supply Voltage | 10–30 VDC ±10% regulated |
| Supply Current | <1.5 mA @ 3.3–6 VDC; <20 mA @ 6–24 VDC |
| 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 |
Suitable Applications — Truflo TKM | TK3M Series
The TKM | TK3M Series is well-suited for applications requiring both local indication and analog outputs for control—especially where chemical compatibility, rugged construction, and washdown protection are important. With pulse plus 4–20 mA (and optional voltage) outputs, it supports everything from simple monitoring to closed-loop control and data acquisition.
- Chemical dosing and metering skids (4–20 mA to PLC; pulse for totalization)
- Process automation requiring analog flow feedback (DCS/PLC integration)
- Water and wastewater treatment process lines and distribution loops
- Corrosive chemical transfer, distribution headers, and recirculation systems
- Filtration skids and industrial utility water monitoring
- OEM equipment requiring multiple outputs (pulse + analog) for flexible integration
- Industrial environments needing NEMA 4X/IP66 protection and low pressure drop