DWD Buffle Plate Flow Transmitter

Brand: KOBOLD Instruments, Inc.

The new KOBOLD measuring instrument type DWD is a flow rate transmitter with digital indication of the actual flow rate, analog output and two adjustable all-or-nothing relays indicating the switching point for monitoring limit values.

An RS232C serial interface is available as an option. The combination of the proven displacement-deflection measuring technique with the new patented pendulum system and electronic analyzer with programmable EEPROM produces a reliable and economical flow transmitter.

Due to its modern technology and features this device is also ideally suited for applications where much more expensive methods of measurement have been used up until now. The flow transmitter type DWD uses the reliable displacement-deflection technique together with new patented technology.

The flowing medium presses against a baffle plate that is fastened to a pendulum – thus causing the displacement.

The pendulum that is retained by a progressive spring system changes its position without friction and depending on the flow. The position of a magnet attached to the pendulum is sensed by a Hall-effect sensor fixed outside the medium.

This signal is processed and evaluated by microchip-based electronics with EEPROM memory. The devices are calibrated and supplied according to your specifications.

Costly adjustments and programming are not required. The DWD is ready for immediate operation. The devices can be re-programmed if necessary. The case can also be adapted easily for the desired mounting position. Numerous connections and materials allow a wide range of applications.

Large line cross-sections can also be measured reliably and economically.
Features
  • Ready for Operation Immediately
  • No Bearings, No Friction
  • Only a Slightly Moving Part
  • Negligible Sensitivity to Dirt
  • Wider Flow Range
  • Small Pressure Loss
  • Any Measuring Ranges Programmable
  • Linear Signal

Specifications

Accuracy

  • ± 1.5 % of Full Scale

Applications

  • Beverage & Food Industry
  • Capital Equipment
  • Chemical Industry
  • Cooling Circuits
  • Heavy Goods Industry
  • Intrauterine Monitoring
  • Mechanical Engineering
  • Monitoring Lubricant Circuits
  • Pharmaceuticals
  • Rolling Mills & Mill Trains

Approvals & Certifications

  • ANSI

BSP Connection

  • G 1" Female
  • G 1/2" Female
  • G 1-1/2" Female
  • G 1-1/4" Female
  • G 2" Female
  • G 3/4" Female
  • G 3/8" Female

Connection Material

  • Brass - Thread
  • PVC - Thread
  • Stainless Steel - Thread

Consumption

  • Maximum

Display

  • LCD DOT-Matrix Module, 2 × 8 Positions

Electrical Rating

  • 2 × 230 V, 1 A, Maximum

Enclosure, Body Material

  • Aluminum Coated PA 66
  • Brass - Pendulum
  • Stainless Steel - Pendulum

Environmental Protection

  • IP65

Flange Material

  • 316 Stainless Steel
  • PVC
  • Zinc-Plated Steel

Flange Size - 1" (DN 25)

  • 1" (DN 25) - PN 25

Flange Size - 1/2" (DN 15)

  • 1/2" (DN 15) - PN 25

Flange Size - 1-1/2" (DN 40)

  • 1-1/2" (DN 40) - PN 25

Flange Size - 1-1/4" (DN 32)

  • 1-1/4" (DN 32) - PN 25

Flange Size - 2" (DN 50)

  • 2" (DN 50) - PN 25

Flange Size - 3/4" (DN 20)

  • 3/4" (DN 20) - PN 25

Flange Size - 3/8" (DN 10)

  • 3/8" (DN 10) - PN 25

Flow Rate

  • 1-10 LPM to 360-3,600 m³/hour to Water

Materials of Construction

  • 316 Stainless Steel - T-Piece
  • Brass - T-Piece
  • PVC - T-Piece

Mounting Position

  • Universal

Nominal Pressure

  • psi: 362.6 (kPa: 2,500, bar: 25)

NPT Connection

  • 1" NPT Female
  • 1/2" NPT Female
  • 1-1/2" NPT Female
  • 1-1/4" NPT Female
  • 2" NPT Female
  • 3/4" NPT Female
  • 3/8" NPT Female

Output

  • 0-10 V - Analog
  • 4-20 mA - Analog

Power Requirement

  • 24 Vdc ± 10 %

Process Temperature

  • -20° to 120° C (-4° to 248° F)

Ratio

  • 1:10 - Standard Flow Range
  • 1:25 - Maximum

Seat / Seal Material

  • FPM

Welded Connection

  • DN 100 Weld End
  • DN 125 Weld End
  • DN 150 Weld End
  • DN 200 Weld End
  • DN 250 Weld End
  • DN 300 Weld End
  • DN 350 Weld End
  • DN 40 Weld End
  • DN 400 Weld End
  • DN 50 Weld End
  • DN 500 Weld End
  • DN 65 Weld End
  • DN 80 Weld End

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