Industrial Flow Measurement Krohne DK46 DK47 DK48 DK800 Variable Area Flowmeter Metal Tube Rotameter

KROHNE DK46/47/48/800 series are all-metal variable area flowmeters (rotameters) designed for low to medium flow rates of liquids and gases. They use a float in a tapered tube to provide visual or electronic flow indication. These models are rugged, reliable and widely used where simple, maintenance-free flow measurement is needed in industrial processes.

• All-metal construction (stainless steel or Hastelloy)
• No moving parts except the float – very low maintenance
• Local mechanical indicator or optional 4–20 mA output
• Limit switches available for alarms
• High pressure and temperature capability
• Horizontal or vertical installation
• DK46/47/48 for small flows, DK800 for higher flows

• Measuring Principle: Variable area (rotameter)
• Sizes: DK46/47/48: DN15–DN50; DK800: DN15–DN150
• Flow Range: DK46/47/48: 0.002–0.8 m³/h (water), 0.02–25 m³/h (air); DK800: up to 180 m³/h (water)
• Accuracy: ±1.6% to ±4% of full scale (depending on size and calibration)
• Max Pressure: Up to 100 bar (DK46/47/48), up to 40 bar (DK800)
• Max Temperature: Up to +200 °C (standard)
• Materials: 1.4404/316L stainless steel, Hastelloy C-22
• Connections: Flanged, threaded, sandwich
• Output: Optional 4–20 mA HART, limit switches

• Low-flow measurement of liquids and gases
• Chemical injection lines
• Gas purging and blanketing
• Cooling water monitoring
• Laboratory and pilot plants

Q: Is it suitable for gases?

A: Yes – calibrated for air or other gases.

Q: Can it have output signal?

A: Yes – optional 4–20 mA transmitter available.

Email: edwardzhao@gbsxj.com

Phone/WeChat/WhatsApp: +8615000725058

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