VA40
The VA40 Variable Area Flowmeter is an all-purpose glass tube flowmeter engineered for accurate, low-cost flow measurement of liquids and gases in basic industrial applications. Operating on the proven variable area float principle, the device provides direct visual observation of fluid behavior and instant local flow readings without requiring auxiliary power.
Constructed with a durable borosilicate glass tube and available with versatile process connection materials, gaskets, and optional signal outputs (4…20 mA or limit switches), the VA40 delivers a highly adaptable flow measurement solution for operating pressures up to 10 barg (145 psig) and temperatures up to +100°C (+212°F).
Key Applications of VA40:
General Industrial & Machinery (OEM): Air and cooling water metering, protective gas monitoring, and gas supply control for industrial furnaces and thermal processing equipment.
Chemical & Process Engineering: Direct measurement of flushing, purging, and inert gases in pipelines and reaction vessels.
Food & Beverage Industry: Metering of process water, compressed air, nitrogen, alcohol, and carbon dioxide.
Pharmaceutical & Life Sciences: Flow monitoring for demineralised water, ultrapure water, solvents, and active fluid processing.
Power Generation & Energy: Auxiliary circuit monitoring for heating and cooling systems in conventional and nuclear power plants.
- Measurement Principle: Utilises a variable area float within a high-clarity borosilicate glass tube for direct direct-reading flow measurement and visual fluid inspection.
- High Precision & Turndown: Provides a 10:1 turndown ratio with a maximum measuring error of ±1% (acc. to VDI/VDE 3513-2) or ±1% of full scale.
- Broad Measurement Capacity: Measures liquid flow rates from 0.4 to 10,000 l/h (0.1 to 2,650 GPH) and gas flow rates from 7 to 310,000 l/h (0.25 to 11,000 SCFH).
- Extensive Connection Options: Fits diverse piping systems with Flange (EN DN15…50 / ASME ½…2″), Thread female (G½-G2 / ½-2″ NPT), Hose, and Hygienic connections (Tri-Clamp, DIN/ISO clamp, threaded ferrule).
- Material Versatility: Available with process connection fittings in 316L stainless steel, PVDF, or chromised steel, alongside EPDM, FFKM, FPM, or NBR gasket seals.
- Signal Output Options: Equipped with optional MIN/MAX limit switches or a 4…20 mA analogue output for recording and process control.
- Safety & Hazardous Certifications: Approved for hazardous environments (ATEX, UKEX) and compliant with SIL 2 safety instrumented systems (acc. to IEC 61508-2), expandable to SIL 3 in a 1oo2 redundant design.
VA40 – VA45