VA40 Variable Area Flow Meter
VA40 Variable Area Flow Meter
The VA40 is a variable area flow meter (VA meter), or rotameter, for flow measurement in basic municipal water and wastewater applications up to a maximum of 10 barg (145 psig) operating pressure and 212˚F (100˚C) operating temperature. The VA40, from KROHNE, is suitable for measuring liquids and gases with flow rates from 1 to several thousand gallons per hour.
- MIN/MAX switches and 4-20 mA
- with glass tube for visual product check (e.g. free from bubbles, color)
- low pressure loss for gas applications
- local indicator without auxiliary power
- -4 to 212˚F (-20 to 100˚C); maximum 10 barg (145 psig)
Description
The VA40 is a glass tube variable area flow meter (VA meter), or rotameter, for flow measurement of liquids and gases. This all-purpose flow meter is suitable for all basic municipal water and wastewater applications up to 212˚F (100˚C) as well as a maximum of 10 bar (145 psi). Typical applications include flow measurement of flushing, purging, or inert gases in addition to heating and cooling water.
- simple flow indicator that does not require a power supply
- allows visual product check such as color, free from bubbles, etc.
- suitable for use with either liquids and gases
- analog measuring signal for recording and control purposes
- flange options: DN15 to DN50 (0.5 to 2″)
- NPT, G, hygienic connections, etc.
The VA40 variable area flow meter, from KROHNE, operates without auxiliary power supply. Furthermore, the measuring cone, protected by a metal sleeve with a viewing glass, makes it easy to directly read the flow and observe the medium. Moreover, this VA meter can also be equipped with two optional limit switches (MIN/MAX) or analog output (4-20 mA). The VA40 comes with multiple process connections options and is suitable for use in hazardous areas.
Features of the VA40 Variable Area Flow Meter
- simple and also low-cost flow measuring principle without auxiliary power
- for direct reading of flow and observation of the medium
- optional MIN/MAX flow switches (SIL 2 conformity according to IEC 61508-2) as well as 4-20 mA for recording and control
- full scale value for liquids: 0.1 to 2,650 GPH (0.4 to 10,000 l/h)
- full scale value for gases: 0.25 to 11,000 SCFH (7 to 310,000 l/h)
- maximum measuring error: ±1% (according to VDI/VDE 3513-2) or ±1% of full scale
- turndown ratio 10:1
- ATEX approval for use in hazardous areas
- suitable for use in Safety Instrumented Systems with SIL 2, in redundant design (1oo2), also in SIL 3 applications (type A device)
- available with FDA compliant materials for potable and drinking water
Common Uses of the VA40 VA Meter
- heating water in addition to cooling water
- gas flow measurement
- demineralized as well as ultra-pure water
- water monitoring in auxiliary circuits
- purge and rinse processes
