KES Mass Flowmeter

Brand: KOBOLD Instruments, Inc.

The KOBOLD KES type series thermal mass flow meters measure the flow of gases, independent of variations in process pressure and temperature.

The flow meters are available in different versions for pipe nominal sizes from 1/4" to DN 200, pressures up to 16 bar and gas temperatures up to 175° C.

The KES probe consists of 2 sensors: a temperature sensor for sensing gas temperature, and a sensor for measuring flow velocity. This sensor element is heated by the control electronics to a constant temperature difference with respect to the medium temperature.

Specifications

Accuracy

  • +0.5 % of Reading, at (0° to 50° C [32° to 122° F] & bar: 0.3 to 2)
  • ± 1 % of Full Scale

Ambient Temperature Range

  • 0° to 50° C (32° to 122° F)

Approvals & Certifications

  • ANSI

Communication

  • RS-232 with Modbus Communication Protocol

Enclosure, Body Material

  • Powder-Coated Aluminum

Environmental Protection

  • IP65

Flange Size - 1" (DN 25)

  • 1" (DN 25) - 150# ANSI
  • 1" (DN 25) - PN 16

Flange Size - 1/2" (DN 15)

  • 1/2" (DN 15) - 150# ANSI

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

  • 1-1/2" (DN 40) - 150# ANSI
  • 1-1/2" (DN 40) - PN 16

Flange Size - 2" (DN 50)

  • 2" (DN 50) - 150# ANSI
  • 2" (DN 50) - PN 16

Flange Size - 3" (DN 80)

  • 3" (DN 80) - 150# ANSI
  • 3" (DN 80) - PN 16

Flange Size - 3/4" (DN 20)

  • 3/4" (DN 20) - 150# ANSI

Flange Size - 4" (DN 100)

  • 4" (DN 100) - 150# ANSI
  • 4" (DN 100) - PN 16

Flange Size - 6" (DN 150)

  • 6" (DN 150) - 150# ANSI
  • 6" (DN 150) - PN 16

Flange Size - 8" (DN 200)

  • 8" (DN 200) - 150# ANSI
  • 8" (DN 200) - PN 16

Function

  • Counter - 7 to 8-Digit, with Reset

Indication

  • LCD Display - 2 × 12-Digit LCD, Backlight

Insertion 'U' Length

  • 152 to 914 mm - Industrial Version
  • 95 to 330 mm - Standard Version

Maximum System Pressure

  • psi: 116 (kPa: 800, bar: 8)

Media

  • All Typicals of Non-Aggressive Gases

Nominal Pressure

  • psi: 232.1 (bar: 16, kPa: 1,600)

NPT Connection

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

Output

  • 0-5 Vdc, 1,000 ohms Minimum
  • 4-20 mA, 700 ohms, Maximum

Output Format

  • Relay Output

Pipe Connection

  • 1" Pipe (DN 25)
  • 1/2" Pipe (DN 15)
  • 1/4" Pipe (DN 8)
  • 1-1/2" Pipe (DN 40)
  • 2" Pipe (DN 50)
  • 3" Pipe (DN 80)
  • 3/4" Pipe (DN 20)
  • 4" Pipe (DN 100)
  • 6" Pipe (DN 150)
  • 8" Pipe (DN 200)

Power Requirement

  • 18-30 Vdc
  • 625 mA - Maximum

Pressure Type

  • Relative

Process Temperature

  • -10° to 175° C (14° to 347° F) - Industrial Version
  • -10° to 80° C (14° to 176° F) - Standard Version

Relay Output

  • 140 mA
  • Maximum

Repeatability

  • ± 0.2 % of Full Scale

Response Time

  • 1 second (Up to Indication of 63 % of the Real Flow Rate)
  • 200 milliseconds - up to Indication of 63 % of the Real Flow Rate

Sensor / Probe Material

  • 316L Stainless Steel - Wetted Material

Supply Pressure Effect

  • 0.3 % / bar for Air

Temperature Effect

  • ± 0.04 % of Reading/°C within ± 25° C of Calibration Value
  • ± 0.06 % of Reading/°C between ± 25° to ± 50° C of Calibration Value

Temperature Range

  • Maximum

Wetted Materials

  • 316L Stainless Steel, 1.4435

Documentation

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