DK46/47/48/800
Variable area flowmeter for low flow gas or liquid applications and sample flow monitoring
- Glass tube with analogue scale, valve and switches
- For low flows from ≥0.04 l/h or ≥0.1 GPH
- G and NPT threads; others on request
- -5…+100°C / +23…+212°F; max. 10 barg / 145 psig
DK46 – Glass cone with 90 mm / 3.55"installation length
The DK46/47/48/800 is a variable area (VA) flowmeter for monitoring and adjusting extremely small flow rates of liquids (from ≥0.04 l/h or ≥0.1 GPH) and gases (from ≥5 Nl/h or 0.22 SCFH). It is thus particularly useful for sample flow monitoring in analyser systems and gas chromatographs or measuring liquids and gases in laboratories and pilot installations. Blinds and supports are available for panel mounting to purge panels or similar applications. By using a lab support, the flowmeters can be converted into a desktop unit.
The purgemeter operates without auxiliary power supply and is available with different glass tube and installation lengths from 90 to 325 mm / 3.55 to 12.8". The medium is visible and the flow value can be read directly off the scale at the height of the float. The glass flowmeter can be provided with max. two limit switches (NAMUR) or a 3-wire digital output. For precise setting of the flow value, the VA meter features a needle valve. The DK 46/47/48/800 is also available with a differential pressure/flow regulator to provide constant flow rates in case of varying inlet or outlet pressures. The device has approvals for use in hazardous areas.
Product highlights
- Cost-effective small purgemeter
- Low-cost measuring principle without auxiliary power
- Maximum measuring error: ±1 / ±2.5 / ±4% (acc. to VDI/VDE 3513-2) or ±1 / ±2 / ±3% of full scale
- 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
- Suitable for use in Safety Instrumented Systems with SIL 2, in redundant design (1oo2) also in SIL 3 applications (type A device)
- No wearing parts
Typical applications
Various industries
- Process or carrier gases
- Purge fluids for measuring systems
- Air or water
- Nitrogen, CO2 or other inert gases
- Sample flow monitoring in gas analysers etc.
- Gas sparging in liquids
Conventional and nuclear power industry
- Air, gases (nitrogen, hydrogen, methane etc.)
- Water
Product variants
DK46
Variable area flowmeter with glass cone and 90 mm / 3.55" 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: ±4% (acc. to VDI/VDE 3513, sheet 2)
- Optional limit switches, flow regulator, panel mount
DK47
Variable area flowmeter with glass cone and 175 mm / 6.89" installation length
- For flows ≥5 l/h or 1.3 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
DK48
Variable area flowmeter with glass cone 325 mm / 12.8"
- For flows ≥0.4 l/h or 0.1 GPH
- MIN/MAX flow monitoring (SIL 2 conform acc. to IEC 61508-2)
- Integrated needle valve
- Measuring uncertainty: ±1%
- Optional limit switches, flow regulator, panel mount
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
Applications
Links
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DK46/47/48/800
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