Unlike laboratory sampling viscometers, our fork process viscometer WKM401F is a high-performance, continuous, multi-variable viscosity meter. It provides in-situ, real-time continuous 24-hour monitoring and measurement. The probe is directly installed in the pipe/tank, allowing for direct detection of fluid in the production pipeline without sampling.
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What’s The Working Principle Of Fork Viscosity Meter -WKM401F?
The fork process viscometer employs a tuning fork resonance detection structure, equipped with a high-precision sensing unit, and achieves accurate measurement based on the principle of fluid damping resistance. During operation, the fork vibrates continuously at a fixed resonant frequency. When the tuning fork probe is immersed in the fluid being measured, the viscosity of the medium generates damping resistance on the fork; the higher the viscosity of the medium, the greater the vibration damping. The viscometer’s built-in high-precision module captures the changing data in real time and accurately calculates the real-time viscosity value of the medium.

Wide Range of Applications Of WKM401F Viscometer:
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| Product Name | Fork Process Viscometer |
| Viscosity Measuring Range | 0-20,000cP |
| Viscosity Accuracy | ± 0. 5% cP (0-10 cP) followed by ± 1% of full scale of maximum calibration range;
± 1% cP (10-500 cP) |
| Influence of process temperature | The viscometer has its own full-scale temperature compensation |
| Wetted material | SS316L, Hastelloy C22, Titanium, Hastelloy B2, Monel400, Zirconium, Monel and other materials used in corrosive media, please consult the factory to determine the final material before selection |
| Housing Material | Die-casting aluminum |
| Safety Approvals | Explosion/Flame-Proof |
| Process Connecting : | Flange, thread, tri-clamp |
| Display | Two-line, LCD screen
Optical switch configuration |
| Outputs | Standard: 4-20mA, HART, Modbus RS-485 |
| Protection Class | IP65 or higher When used outdoors, avoid direct sunlight. When used in hot areas, pay special attention |
| Dimensions | 355 mm (h) x 163 mm (w) x 163 mm (d) (Typical short stem version) |
| Weight (Typical) | 7 kg |
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