WESS-Microwave Flow Sensor (Model:WKF-Series)

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.

Model	WKF-1
Power Source	105/210VAC ±10% 50/60Hz
Supply Voltage	5VA
Sensing Distance	Max. 1.5m (depend on object)
Frequency	24.2GHz
Power Output	5.5mW
Output Contact	1 x SPDT 250VAC 5A Fault Alarm(Option) -activates for 6 seconds after detecting a weak oscillation or operation stop
ON Delay	variable 10 sec at the max.
OFF Delay	variable 10 sec at the max.
Acceptable Temp.	-10 ~ +55°C
IP Rating	IP66
Weight	about 1.5kg
Allowable Pressure	490kPa

Model	WKF-2
Power	105VAC/210VAC ±10% 50/60Hz
Output Contact	SPDT 250VAC 5A
Allowable Temp.	Amplifiter-20 ~ +55˚C Electrode -20 ~ +80˚C (Option : High Temp.)
Display	LED(RED)
ON delay	variable 10 sec at the max.
OFF delay	variable 10 sec at the max.
Mouting	Method R1 or JIS5K25A

Model	WKF-3
Supply Voltage	105/210VAC ±10% 50/60Hz
Signal Output	4-20mA DC
Acceptable Temp.	-10 ~ +55°C
Allowable Pressure	490KPa
Load Resistance	Less than 300Ω