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Kobold Electronic Flowmeter, KFF/KFG

KFF/KFG Electronic Low Volume Flowmeter

Brand: KOBOLD Instruments, Inc
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Kobold Electronic Flowmeter, KFF/KFG
KOBOLD KFF/KFG flow meters are used for measuring low and smaller, volumetric flow rates of gases (KFG) and liquids (KFF). The media must be transmissive for infrared light. 

Series KFF/KFG 1000 flow meters are available in Ryton, brass and PTFE materials; therefore suitable for many applications in industry, in laboratories, and so forth. 

The new PTFE sensor of the 1000 series is delivered as standard with (0 to 5 Vdc) Analog output and frequency output. The frequency output is optional on other models. 

Series KFF/KFG 3000 flow meters are available in Ryton® and in brass. The flow meter is based on the Pelton Principle, that is, the flowing medium causes a vane to rotate. 

The rotary motion is converted to electrical impulses by means of photodiodes. The flow rate is output as a frequency signal or a linear Analog (0 to 5 Vdc).

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Specifications

Brand

Accuracy

  • ± 3 % of Full Scale

Applications

  • Flow
  • Industrial Service
  • Laboratories
  • Liquid Service

Bearing Material

  • 316 Stainless Steel - Bearing Shell
  • PTFE - Bearing Shell
  • Sapphire

Connection Material

  • Acetal
  • Brass
  • PFA

Consumption

  • 50 mA (Typically) - Current Consumption

Enclosure, Body Material

  • Brass
  • Glass 40 %
  • PTFE
  • Ryton 60 %

Flow Rate

  • Air: 211.89 to 1,059.44 scfh (100 to 500 L/minute)
  • Liquid: 2.12 to 1,059.44 scfh (1 to 500 L/minute)
  • Water: 2.12 to 21.19 scfh (1 to 10 L/minute)

Frequency

  • Maximum

Gasket Material

  • FPM
  • Kalrez

Linearization

  • ± 3 % of Full Scale

Materials of Construction

  • Glass 40 % - Turbine
  • PTFE - Turbine
  • Ryton 60 % - Turbine

Maximum System Pressure

  • psi: 508 (kPa: 3,500, bar: 35)

Mounting Position

  • Horizontal

Output

  • 0 to 5 Vdc & Frequency Output - PTFE Version (KFF-1 Only)
  • 0 to 5 Vdc & Frequency Output - PTFE Version (KFF-1, KFF-3)
  • 0-5 Vdc

Repeatability

  • ± 0.2 % of Full Scale - KFF
  • ± 1 % of Full Scale - KFG

Supply Voltage

  • 12.5 Vdc ± 1 Vdc - PTFE Version
  • 12.5 Vdc ± 2 Vdc

Temperature Range

  • 0° to 50° C (32° to 120° F)

Thermal Drift

  • 0.2 %/°C

Tube Connection

  • 1/4” Compression Fitting
  • 1/8” Compression Fitting
  • 3/8” Compression Fitting

Documentation

Data Sheets

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