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The WKF microwave flow sensor is using non-contact flow sensing technology with 24GHz frequency. The sensor is sosensitive that it can even detect a grain.
Features
- Super-sensitive
Our unique circuit technology makes it possible to detect a grain.
- Non-invasive
Our 24GHz technology has made it possible to sense through an intermediate barrier such as glass or synthetic resin.
- Fouling
It may not be affected by smudges on the sensing surface or scale adhesion due to our 24GHz technology.
- Versatility
It can detect flow in both small and large quantity if its sensitivity is adjusted.
Principle Of Operation
It is a non-contact flow sensor which emits the microwaves of 24GHz from the tip of its sensor. Reflected from the surface of powders and solids traveling in a pipeline, the microwaves get modulated in their frequency on the Doppler-effect principle. The sensor detects the frequency difference between transmitted and reflected microwaves and then output a contact signal. It can reliably detect a little flow or motion of the powder or the grain in chutes or pneumatic conveying lines, which has so far been considered to be very difficult.
WKF-1(Flow sensor)
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Model
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WKF-1
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Power Source
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105/210VAC ±10% 50/60Hz
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Supply Voltage
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5VA
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Sensing Distance
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Max. 1.5m (depend on object)
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Frequency
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24.2GHz
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Power Output
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5.5mW
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Output Contact
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1 x SPDT 250VAC 5A Fault Alarm(Option) -activates for 6 seconds after detecting a weak
oscillation or operation stop
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ON Delay
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variable 10 sec at the max.
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OFF Delay
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variable 10 sec at the max.
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Acceptable Temp.
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-10 ~ +55°C
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IP Rating
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IP66
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Weight
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about 1.5kg
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Allowable Pressure
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490kPa
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WKF-2(Flow switch)
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Model
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WKF-2
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Power
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105VAC/210VAC ±10% 50/60Hz
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Output Contact
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SPDT 250VAC 5A
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Allowable Temp.
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Amplifiter-20 ~ +55˚C
Electrode -20 ~ +80˚C (Option : High Temp.)
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Display
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LED(RED)
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ON delay
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variable 10 sec at the max.
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OFF delay
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variable 10 sec at the max.
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Mouting
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Method R1 or JIS5K25A
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WKF-3 This model outputs 4-20mADC
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Model
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WKF-3
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Supply Voltage
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105/210VAC ±10% 50/60Hz
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Signal Output
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4-20mA DC
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Acceptable Temp.
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-10 ~ +55°C
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Allowable Pressure
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490KPa
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Load Resistance
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Less than 300Ω
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Resource & Download
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