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KFF/KFG Electronic Low Volume Flowmeter
Brand: KOBOLD Instruments, Inc
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).
Specifications
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
