Measuring range:
15 - 100 ml/min ... 1 - 10 l/min water
25 - 100 ml/min ... 100 - 500 l/min air
Connection: G ⅛ ... G ½
Material: brass, Ryton®, PTFE
pmax: 35 bar
tmax: 50°C
Accuracy: ±3 % of full scale
Viscosity range: low viscosity
Pulse output, 0 - 5 VDC
Measuring range:
15 - 100 ml/min ... 1 - 10 l/min water
25 - 100 ml/min ... 100 - 500 l/min air
Connection: G ⅛ ... G ½
Material: PPS, brass, PTFE
pmax: 35 bar
tmax: 50°C
Accuracy: ±3 % of full scale
Viscosity range: low viscosity
Digital display, 0 - 5 VDC
KOBOLD KFF/KFG flowmeters 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 flowmeters 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 ... 5 VDC) analogue output and frequency output. The frequency output is optional on other models.
Series KFF/KFG 3000 flowmeters are available in Ryton® and in brass.
Function Principle
The flowmeter 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 analogue (0...5 VDC).
Specifications
Technical Data
- Accuracy: ± 3 % f. s.
- Linearity: ± 3 % f. s.
- Repeatability:
KFF: ± 0.2 % f. s.
KFG: ± 1% f. s. - Installation position: horizontal
- Temperature range: 0...50°C
- Temperature drift: 0.2%/ °C
- Max. pressure:
KFF:
Ryton®: 7 bar
Brass: 35 bar
PTFE: 4 bar
KFG: 2.5 bar - Supply voltage: 12.5 VDC ± 2 VDC
PTFE version: 12.5 VDC ± 1 VDC - Current consumption: 50 mA (typically)
- Output:
KFF-1../KFG-1..:
Standard: 0...5 VDC
Option T
(KFF-1.. only): 0...5 VDC and frequency output
PTFE version: 0...5 VDC and frequency output - Max. frequency: 500 Hz
- KFF-3../KFG-3..: 0...5 VDC
Material
Version | Ryton® | Brass | PTFE |
Housing | 60% Ryton®/ 40% glass | Brass/grass | PTFE |
Turbine | 60% Ryton®/ 40% glass | 60% Ryton®/ 40% glass | PTFE |
Bearings | Sapphire | Sapphire | Sapphire |
Bearing Shell | St. steel (316) | St.steel (316) | PTFE |
Gasket | FPM | FPM | Kalrez® |
Connection | Acetal | Brass | PFA |
Download Datasheet: Kobold Rotating Vane-Low Volume
Reference : kobold.com
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