DPT Torsion Paddle Flowmeter/Monitor

Brand: KOBOLD Instruments, Inc.

The patented KOBOLD torsional paddle flow meter type DPT operates according to the diaphragm plate principle. For the first time, a flat torsion spring simultaneously acts as a mount for the paddle and as an elastic force.

The device thus operates with almost no wear. The paddle comprises a diaphragm plate and a lever arm. When the diaphragm plate is moved by the flow in the flow direction, the lever arm is deflected by the force of the leaf spring.

This angular motion is transferred non-contacting through the casing wall by a magnet to a Hall-effect sensor with no losses. Different measuring ranges and instrument sizes are realized with the geometry of the lever arm, the diameter and shape of the diaphragm plate as well as the height and thickness of the leaf spring.

Calibration nozzles can also be press-fitted to adapt the measuring ranges. The signal from the Hall-effect sensor is displayed by different electronic means and serves to monitor the volume flow.

Specifications

Accuracy

  • ± 3 % of Full Scale

Ambient Temperature Range

  • Maximum

Applications

  • Chemical & Pharmaceutical
  • Drinks & Semi-Luxury Food Industry
  • Heavy Goods Industry
  • Mechanical Engineering & Capital Equipment

BSP Connection

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

Display

  • 3-Segment LED
  • 5-Digits

Electrical Connectors

  • M12 × 1 Plug Connector

Electrical Contacts

  • 2 Normally Closed Contacts
  • 2 Normally Open Contacts

Enclosure, Body Material

  • 316Nb Stainless Steel

Environmental Protection

  • IP65

Flow Rate

  • 5 to 30 LPM to Water
  • 850 to 1900 LPM to Water

Materials of Construction

  • Calibration Nozzles: 316Ti Stainless Steel

Mounting Position

  • Horizontal

Nominal Pressure

  • psi: 40 (kPa: 276, bar: 2.76)

NPT Connection

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

Output

  • 0-10 Vdc
  • 30 Vdc / 5 A
  • 4-20 mA
  • 5 A Resistive Load
  • 500 ohms Minimum
  • Maximum

Output Format

  • PNP or NPN Semiconductor
  • Relay/Changeover Contact

Power

  • Power Supply: 24 Vdc

Process Temperature

  • 80° C (176° F)

Seat / Seal Material

  • Brass Version: NBR
  • Stainless Steel Version: FPM

Spring Material

  • Paddle, Spring Strip: 316Ti Stainless Steel

Supply Voltage

  • 100-240 Vac ± 10 %
  • 10-40 Vdc
  • 18-30 Vac
  • 24 Vdc ± 20 %
  • 3-Wire Technology, Approximately 100 mA

Temperature Range

  • Maximum

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