DVZ Compact Vortex Flowmeter

Brand: KOBOLD Instruments, Inc.

The compact KOBOLD Vortex flow meter Model DVZ is used for measuring and monitoring smaller and medium-sized flow of low viscosity, water-like liquids in pipes.

The device works using the vortex principle, making it virtually maintenance-free. This involves the installation of a sharp-edged object (the vortex generator) in the flow duct. Vortices are created behind the object whose frequency is proportional to the velocity of flow of the liquid.

The flow volume can be determined with a very great degree of accuracy by measuring the vortex frequency. This achieves a very high linearity over the whole measuring range.

The device can be fitted with switching, frequency or analogue outputs. There is also an optional compact electronics package that includes a digital display, and both a switching and Analog output. Dosing and metering electronics are currently being developed.

Specifications

Accuracy

  • ± 2.5 % of Full Scale

Ambient Temperature Range

  • -10° to 60° C (14° to 140° F)

Applications

  • Measuring of Aggressive, High-purity or Salty Solutions
  • Monitoring the Flow of Low Viscosity Liquids
  • Unsuitable for Abrasive Media or Media Contaning A Large Proportion of Fibres

Approvals & Certifications

  • CE

BSP Connection

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

Configuration

  • 0(4)-20 mA Analog Output Adjustable - Compact Electroics

Connection Material

  • 316 Stainless Steel - Wetted Materials
  • Brass, up to 32 L/minute - Wetted Materials
  • Nickel-Plated Brass, from 40 L/minute - Wetted Materials

Consumption

  • 100 mA - Compact Electronics
  • 25 mA
  • 5 mA
  • Approximately 150 mA - Counter, Dosing Electronics

Display

  • 2 × 8-Digit LCD Display - Counter, Dosing Electronics
  • 3-Digit LED Display
  • Dual LED for Switching Condition & when Range Limit is Exceeded

Electrical Connectors

  • DIN 43650
  • M12 Plug - Counter Electronics
  • M12 × 1
  • M12, 5-Pole - Compact Electronics
  • Plug M12×1.5-Pole

Electrical Contacts

  • N/C or N/O Programmable - Compact Electronics

Enclosure, Body Material

  • Fiberglss Reinforced
  • Oxide Ceramic (Non-Wear Version)
  • PPS

Environmental Protection

  • IP65

Flow Rate

  • 0.5 - 4.5 to 10 - 100 L/minute

Frequency

  • 50 to 1,000 Hz
  • 500 Hz

Function

  • Correction Amount
  • Dosing
  • Fine Dosing
  • Flow Switch
  • Language
  • Minimum/Maximum
  • Monitoring for Part
  • Reset
  • Start
  • Stop
  • Total Quantity

Load Impedance

  • 500 ohms

Maximum System Pressure

  • psi: 145 to 290 (kPa: 1,000 to 2,000, bar: 10 to 20)

Mounting Position

  • Any, Flow in Direction of Arrow

NPT Connection

  • 1" NPT Male
  • 1/2" NPT Male
  • 1/4" NPT Male
  • 3/4" NPT Male
  • 3/8" NPT Male

Output

  • 0-20 mA
  • 1 A at 30 Vdc
  • 1 or 2 Open Collector - Compact Electronics
  • 24 Vdc
  • 30 Vac/Vdc / 2 A / 60 VA - Counter, Dosing Electronics
  • 4-20 mA, 3-Wire
  • Maximum
  • PNP Pulse

Output Format

  • Relay Change Over

Output Function

  • Normally Closed
  • Normally Open

Process Temperature

  • 0° to 80° C (32° to 176° F)

Programming

  • 4 Button
  • Via 2 Buttons

Relay Output

  • 2 Relays - Counter, Dosing Electronics

Repeatability

  • ± 1 % of Full Scale

Response Time

  • 1 second (At Flow Changes > 10 % of Full Scale)

Seat / Seal Material

  • EPDM - Wetted Materials
  • FPM - Wetted Materials
  • NBR - Wetted Materials

Sensor / Probe Material

  • PVDF - Wetted Materials

Supply Voltage

  • 24 Vdc ± 20 %

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