Rabu, 27 April 2022

Kobold DRB Turbine Wheel Flowmeter

Kobold DRB Turbine Wheel Flowmeter is used for measuring and monitoring liquids. The device works according the well-known blade wheel principle. The four vane blade wheel is retained radially in a high quality sapphire bearing. The sensor is supplied ready-to-install with pipe fittings or with weld-on sleeves.
Kobold DRB Turbine Wheel Flowmeter

The blade wheel is set in motion by the flowing medium. Magnets are embedded hermetically sealed in the ends of the blade wheels. The magnets generate electrical pulses in a Halleffect sensor mounted outside the flow area. Various electronics units can be used to display and monitor the volumetric flow.
Kobold DRB Turbine Wheel Flowmeter 
Pulse / Analogue Output DRB-..F, DRB-..L

Kobold DRB Fields of Application

  • cooling water monitoring
  • general mechanical engineering
  • waste water treatment
  • heavy goods industry
  • chemical industry

Materials

  • Housing:
    • brass
    • stainless steel 1.4581
    • stainless steel 1.3955 (DRB...W)
  • Seals:
    • brass version: NBR
    • stainless steel version: FPM
  • Turbine wheel: PVDF
  • Axle: hard metal (DRB-11... and DRB-12..) ceramic (DRB-1300..)
  • Bearing: ceramic (DRB-11... and DRB-12..) ceramic/PEEK (DRB-1300..)
Kobold DRB Turbine Wheel Flowmeter 
Compact Electronic DRB-..C3

 

Kobold DRB Turbine Wheel Flowmeter 
Digital Display DRB with ADI

 

Kobold DRB Turbine Wheel Flowmeter 
Dosing Electronic DRB with ZED

Technical Details

  • Measuring accuracy: ±3% of full scale
  • Process temperature: max. 80°C
  • Ambient temperature: max. 80°C
  • Max. operatingpressure: PN 16 / 20°C
  • Max. pressure loss:
    • DRB-...05: 0.05 bar
    • DRB-...10, DRB-..15: 0.03 bar
    • DRB-...20: 0.04 bar
    • DRB-...25: 0.02 bar
    • DRB-...30: 0.01 bar
  • Protection: IP65

Electronics

Frequency output (..F300)

  • Power supply: 12 - 28 VDC
  • Power consumption: 10 mA
  • Pulse output: PNP, open collector, max. 25 mA
  • Electrical connection: plug connector M12x1

Frequency output with frequency divider

  • Power supply: 24 VDC ±20%
  • Power consumption: 15 mA
  • Pulse output: PNP, open collector, max. 25 mA
  • Electrical connection: plug connector M12x1
  • Division ratio: 1...1/128, factory set

Analogue output (plug-on display option)

  • Power supply: 24 VDC ±20%
  • Output: 0-20 mA or 4-20 mA, 2- or 3-wire
  • Max. load: 500 Ω
  • Electrical connection: plug connector M12x1 or DIN 43 650
  • Option: plug-on display (with plug connec. DIN 43 650, 2-wire)

Compact electronics

  • Display: 3-segment LED
  • Analogue output: (0)4...20 mA adjustable, max. 500 W
  • Switching outputs: 1 (2) semiconductor PNP or NPN, factory set
  • Contact operation: N/C/N/O contact programmable
  • Setting: with 2 buttons
  • Supply: 24 VDC ±20%, 3-wire technology, approx. 100 mA
  • Electrical connection: plug connector M12x1

ADI electronics

  • Display: bargraph, 5-digit digital display
  • Analogue output: (0)4...20 mA, 0-10 VDC 2 switching outputs: relay /changeover contact,max. 250 VAC/5A resistive load, max. 30 VDC / 5A
  • Setting: with 4 buttons
  • Power supply: 100...240VAC ±10% or18...30VAC /10...40VDC
  • Electrical connection: pluggable terminal block viacable gland

DRB-...Exxx (Counter electronic)

  • Display: LCD, 2 x 8 digit, illuminated total, part and flow quantities units selectable
  • Analogue output: 0(4)...20 mA adjustable
  • Load: max. 500 Ω
  • Switching output: 2 relays, max. 250V/5A/1000 VA
  • Settings: via 4 buttons
  • Functions: reset, Min./Max. memory, flow monitor, monitoring for part and total quantity, language
  • Power supply: 24 VDC ±20%, 3-wire
  • Power consumption: approx. 170 mA
  • Electrical connection: pluggable terminal block via cable gland

DRB-...Gxxx (Dosing electronic)

  • Display: LCD, 2 x 8 digit, illuminated total, part and flow quantities units selectable
  • Analogue output: 0(4)...20 mA adjustable
  • Load: max. 500 Ω
  • Switching output: 2 relays, max. 250V/5A/1000 VA
  • Settings: via 4 buttons
  • Functions: dosing (relay S2), start, stop, reset, fine dosing, correction amount, flow switch, total quantity, language
  • Power supply: 24 VDC ±20%, 3-wire
  • Power consumption: approx. 170 mA
  • Electrical connection: pluggable terminal block via able gland

Download Datasheet: Kobold DRB Turbine Wheel Flowmeter

Reference : kobold.com

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