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Home / Instruments & Automation / Flow Meters / Variable-Area Flow Meter / KROHNE DK46/47/48/800 Variable Area Flowmeter
KROHNE DK46/47/48/800 Variable Area Flowmeter
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Pioneer Dalian Automation Instrument Co.,Ltd
Liaoning, China
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The DK46/47/48/800 is a variable area (VA) flowmeter designed for monitoring and modifying extremely small liquid and gas flow rates (from 0.04 l/h or 0.1 GPH) and gases (from 5 Nl/h or 0.22 SCFH). It is thus especially useful for monitoring sample flow in analyzer systems and gas chromatographs, as well as measuring liquids and gases in laboratories and pilot plants. Panel mounting blinds and supports are provided for purging panels and other related applications. The flowmeters can be transformed into a desktop unit by using a lab support.

Type Flowmeter
Measured media Liquids, Gases
Family name DK
Positioning For low flow gas or liquid applications and sample flow monitoring
Measurement principle Variable area float
Process pressure max. 10 barg/ 145 psig
Process temperature 0…+100°C/ -40…+392°F
Measuring tube Material Borosilicate glass
Gaskets Material Ethylene propylene diene monomer (EPDM), Polytetrafluoroethylene (PTFE), Perfluoroelastomer rubber (FFKM), Fluoroelastomer rubber (FPM)
Process connection Material Austenitic stainless steel (1.4404/316L), Polyvinylidene fluoride (PVDF), Nickel-plated brass
Flange connections EN (1092-1): DN15…25 ASME (B 16.5): ½…1"
Thread connections Female: G¼ ¼ NPT
Other connections Swagelok;Serto, Ermeto; Hose; Gyrolok
Certificates/Approvals Nuclear Nuclear qualification on request (e.g. acc. to ASME III, RCC-M/E, etc.)
Certificates/Approvals Safety SIL 2
Certificates/Approvals Ex ATEX, NEPSI, PESO, UKEX
Discrete outputs Limit switches

 The Variable Area Flowmeter characteristics and options:  

  1. Low-cost measurement principle without auxiliary power.
  2. Small purge meter at a low cost. 
  3. Fine metering of tiny amounts of liquids and gases. 
  4. High-quality needle valve integrated in the foot or headpiece. 
  5. Stainless steel, brass, or PVDF fittings.
  6. Suitable for use in SIL 2 Safety Instrumented Systems, in redundant design (1oo2), and SIL 3 applications (type A device).
  7. There are no wearable pieces.

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