Product Overview
Armoured VA Rotameter (Metal Tube Variable‑Area Flow Meter)
Armoured VA rotameters provide robust, all‑metal flow measurement for liquids, gases, and steam in demanding industrial environments. Built with stainless steel or corrosion‑resistant alloys, they withstand high pressure, high temperature, and corrosive media. The float is magnetically coupled to the indicator, enabling safe operation with opaque or aggressive fluids. Optional 4–20 mA transmitters, HART®, alarms, and field indicators support advanced process control.
Ideal for chemical, petrochemical, power, pharmaceutical, and general industrial applications.
Armoured VA Rotameters
| Feature | Specification |
|---|---|
| Product Type | Armoured / Metal‑Tube Variable Area (VA) Rotameter |
| Measurement Principle | Float rising in a metal tapered tube; magnetic coupling to external indicator |
| Media | Liquids, gases, steam; suitable for opaque, corrosive, or high‑temperature fluids |
| Tube Materials | 316/316‑Ti SS, Hastelloy, PTFE‑lined, Monel, Tantalum (depending on model) |
| Float Options | Stainless steel, Hastelloy, PTFE and specialty alloys |
| Accuracy | ±1.6% FS typical (liquids); ±1.8–2.5% FS depending on lining/medium |
| Repeatability | ±0.25% FS |
| Flow Range / Turndown | Typical 10:1 turndown (higher available depending on model) |
| Pressure Rating | Up to 580 psi (40 bar) standard; up to 8,700 psi (600 bar) for severe‑service designs |
| Temperature Rating | –196°C to +400°C ABB; up to 350°C (660°F) for KOBOLD BGN series |
| Connections | ANSI/DIN flanges, NPT threaded, hygienic connections (size range ½″–4″ or larger) |
| Outputs / Communication | 4–20 mA, HART®, FOUNDATION Fieldbus®, Profibus‑PA®, alarms, totalizers |
| Approvals | ATEX / IECEx / SIL / FM explosion‑proof depending on model |
