DVE Vortex Flowmeter

Brand: KOBOLD Instruments, Inc.

The KOBOLD Vortex Flowmeter DVE utilizes three primary sensing elements: a Vortex Shedding Velocity Sensor a RTD Temperature Sensor and a Solid-State Pressure Transducer to measure the mass flow rate of gases, liquids and steam.

Systems that use external process measurements may not provide adequate compensation for the fact that process conditions can change radically between the point of velocity measurement and the point where upstream or downstream pressure and temperature measurements are being made.

Because the DVE multivariable flow meter measures all of these parameters in a single location, it delivers a more accurate process measurement.

Integrating multivariable output capability with a single line penetration also simplifies system complexity and helps reduce initial equipment cost, installation cost and maintenance costs.

Specifications

Accuracy

  • ± 0.3 % of Full Scale - Gas/Steam (Pressure)
  • ± 0.3 % of Reading - Liquids (Density)
  • ± 0.5 % of Reading - Gas/Steam (Density)
  • ± 1.2 % of Reading - Liquids (Volumetric Flow Rate)
  • ± 1.5 % of Reading - Gases & Steam (Volumetric Flow Rate), Liquids (Mass Flow Rate)
  • ± 1° C (± 2° F) - Liquids, Gas/Steam
  • ± 2 % of Reading - Gas/Steam (Mass Flow Rate)
  • ± 3 % of Full Scale - Pressure

Alarm

  • Solid State Relay 40 Vdc

Ambient Temperature Range

  • -20° to 60° C (-4° to 140° F)

Approvals & Certifications

  • ATEX
  • IEC Ex

Configuration

  • HART Protocols
  • Modbus

Display

  • Alphanumeric LCD (2-Line 16-Characters), Rotatable in 90° Steps

Environmental Protection

  • IP66

Flange Size - 2" (DN 50)

  • 2" (DN 50) - ANSI Class 150
  • 2" (DN 50) - ANSI Class 300
  • 2" (DN 50) - ANSI Class 600
  • 2" (DN 50) - PN 16
  • 2" (DN 50) - PN 40
  • 2" (DN 50) - PN 64

Flow Rate

  • 5.2-157 to 284-85,371 m³/hour to Liquids
  • 81-938 to 22,435-1,324,739 kg/hour to Saturated Steam
  • 89-1,463 to 26,915-2,467,081 Nm³/hour to Air

Maximum System Pressure

  • psi: 1,450 (kPa: 10,000, bar: 100)

NPT Connection

  • 2" NPT Male

Operating Pressure - Sensor

  • psia: 30 to 1,500 (kPa: 200 to 10,000, bar: 2 to 100)

Output

  • 4-20 mA Loop Powered for Volumetric meters - Analog
  • 4-20 mA / HART
  • 50 ms 40 Vdc - Totalizer Pulse

Overpressure & Static Pressure Limits

  • psia: 60 to 2,500 (kPa: 400 to 17,500, bar: 4 to 175) - Overload Pressure

Power Requirement

  • 12-36 Vdc, 300 mA - Maximum
  • 12-36 Vdc, Loop Powered
  • 85-240 Vac, 50/60 Hz, 5 W

Pressure Type

  • Absolute

Process Fitting Details

  • Compression Fitting

Programming

  • Six Push Buttons

Repeatability

  • ± 0.1 % of Rate - Volumetric Flow Rate
  • ± 0.1° C (± 0.2° F)
  • ± 0.2 % of Rate - Mass Flow Rate

Storage Temperature

  • -40° to 65° C (-40° to 150° F)

Temperature Range

  • -40° to 260° C (-40° to 500° F)
  • Maximum

Wetted Materials

  • 316L Stainless Steel, 1.4404
  • Dupont Teflon
  • Graphite-based Packing

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