
DK800
Variable area flowmeter with glass cone and 125 mm / 4.92" installation length
- For flows ≥2.5 l/h or 0.65 GPH
- MIN/MAX flow monitoring (SIL 2 conform acc. to IEC 61508-2)
- Integrated needle valve
- Measuring uncertainty: ±2.5% (acc. to VDI/VDE 3513, sheet 2)
- Optional limit switches, flow regulator, panel mount

Overview
The DK48 is a variable area (VA) flow meter for monitoring or dosing of extremely small flow volumes of liquids (≥2.5 l/h or 0.65 GPH) and gases (≥5 Nl/h or 0.22 SCFH). It is thus particularly useful for sample flow monitoring in analyser systems and containers as well as on purge panel solutions or in similar applications. Due to its robust glass construction, the VA meter is highly suitable for aggressive products.
The DK47 operates without auxiliary power supply. The purgemeter consists of a glass tube (14.5 cm / 5.7"). The medium is therefore visible and the flow value of the medium can be read directly off the scale at the height of the float. The VA meter can be provided with max. two limit switches (NAMUR) or a 3-wire open collector. For precise setting of the flow value, the DK47 features an adjustable needle valve. It is also available with a differential pressure regulator to provide constant flow rates in case of varying inlet or outlet pressures. The device has approvals for use in hazardous areas.
Features & Options
Product features and options depend on device configuration: Contact us to make sure that your preferred functionality can be combined in one device.
- Cost-effective small purgemeter
- Low-cost measuring principle without auxiliary power
- Accuracy: ±2.5% error of measured value acc. VDI/VDE 3513-2
- Fine metering of very small volumes of liquids and gases
- Integrated high quality needle valve in foot or head piece
- Stainless steel, brass or PVDF fittings
- No wearing parts