The DK 46, DK 47, DK 48 and DK 800 variable area flowmeters feature glass cones of varying lengths for different accuracy requirements. The medium is visible and the flow value of the gas or liquid can be read directly off the scale at the height of the float.
It is easy to change the measuring glass, which is protected by a plastic cover, without disassembling the fitting.
For precise setting of the flow value, all devices are equipped with a metering valve.

Highlights
Simple, low-cost measuring principle without auxiliary power
Stainless steel, brass or PVDF fittings
Needle valve in foot or head piece
Process temperatures: -5degC to +100degC
Operating pressure up to 10 bar
Upper limit of measurement for liquids: 0.4 to 160 l/h (water: 20degC)
Upper limit of measurement for gases: 5 to 5,000 l/h (air: 20degC, 1.013 bar)
2 limit switches (ring initiators)
Accuracy 1.0 % - 4.0% of measured value acc. VDI/VDE 3513-2 (qG=50%) (depending on length of cone)
Use in hazardous areas (ATEX)
Many different process connections

The devices are especially well suited to measuring carrier gases in gas chromatography, for display, monitoring and dosing of gases in production processes as well as measuring liquids and gases in laboratories and pilot installations.

Blinds and supports are available for panel mounting. By using a lab foot, the flowmeters can be converted into standard devices. KROHNE also supplies fully assembled, customer-specific dosing panels.