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VA 40
The VA 40 variable area flowmeters are suitable for measuring liquids and gases.
The standardized device design is available with various connections that conform to standards. The glass measuring cone, protected by a metal sleeve with a viewing glass, makes it easy to read the flow directly and observe the medium.
The suitability for measuring the flow of gases in accordance with the DVGW G260 process sheet has been certified by the DVGW testing station at the Gas-Fired Thermal Institute in Essen.
Highlights  | Simple, low-cost measuring principle without auxiliary power
| | Stainless steel fittings: other materials optional
| | Thread, flange, hose or clamp connection
| | Process temperatures: -20°C to +100°C
| | Operating pressure up to 7/10 bar (depending on DN)
| | Upper limit of measurement for liquids: 0.4 to 10,000 l/h (water: 20°C)
| | Upper limit of measurement for gases: 7 to 310,000 l/h (air: 20°C, 1.013 bar)
| | 2 limit switches
| | Accuracy 1.0 % of measured value acc. VDI/VDE 3513-2 (qG=50%)
| | Use in hazardous areas (ATEX)
| | Special food and pharmaceutical variant |
Food and pharmaceutical design
Smooth stainless steel surfaces featuring a surface roughness of the components in contact with the medium of < 0.8 µm make it difficult for deposits to form and are easy to clean.
Combined with a design devoid of dead spaces and stagnation zones, microorganisms cannot stick and multiply. There are suitable connections and FDA conforming materials for the food and pharmaceutical industry.
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