American Sensor Optical Barrier CWB3000W User Manual

							557 Long Road 
Pittsburgh, PA  15235, USA 
Email: 
[email protected] 
www.americansensors.com 
Tel: 412-242-5903   fax: 412-242-5908
 
 
2015  CWB-3000-W Microwave Detector  1 
 
CWB-3000-W 
MICROWAVE DETECTOR 
 
NON-CONTACT, NON-INVASIVE  
CONTINUOUS AND RELIABLE MEASUREMENT 
EVEN IN DUST, STEAM, VAPORS, NOISE, and HIGH 
TEMPERATURES 
   
 
   
FEATURES
: 
 High  Penetration   -  penetrates accumulated ash buildup due to incr eased 
operating range, which is approximately 300% greate r than that of the 
conventional model.  
  Unaffected  by  Adverse  Environments   
 Simple  Beam  Alignment   
 Selectable  Detection  Mode    
 Small  Sensing  Head   -- approximately 100m range with 027mm antenna 
 
 
APPLICATIONS: 
  Microwave barrier 
 Hot metal edge detection 
 Hot strip detection    
						

							557 Long Road 
Pittsburgh, PA  15235, USA 
Email: 
[email protected] 
www.americansensors.com 
Tel: 412-242-5903   fax: 412-242-5908
 
 
2015  CWB-3000-W Microwave Detector  2 
 
DESCRIPTION: 
The  CWB-3000  microwave  sensor  is  a  level  switch,  which  consists  of  a  transmitter  and  a  receiver, 
installed face to face.   The transmitter transmits  microwaves toward the receiver and an output relay  
in  the  receiver  is  released  when  the  beam  is  obstru cted.  Harsh  environments  may  result  in  a  buildup 
of  contaminants  on  the  sensing  surfaces.    However,  the  sensor  easily  penetrates  this  buildup,  due  to 
the high penetrability of microwaves.   
 
PRINCIPLE  of  OPERATION : 
When  microwaves  transmitted  through  the  air  encount er  an  object,  some  microwaves  will  be 
reflected,  some  will  be  absorbed  and  the  remainder  will  pass  through  the  object.      The  amount  of 
microwaves passing through the object depends on it s composition.   Generally speaking, microwaves 
cannot  penetrate  metals  and  are  reflected;  water  ab sorbs  the  most  microwaves.    Microwaves  can 
easily pass through plastics, glass, ceramic, paper  etc.  
  
All  substances  other  than  metals  can  be  penetrated  when  attached  to  the  sensing  surface.   
Penetrability  depends  on  the  thickness  and  composit ion  of  the  attached  material,  the  quantity  of 
metallic substances and the amount of water contain ed in said material.  
  
By  providing  detecting  windows  on  both  side  of  a  ta nk  through  which  the  microwaves  can  pass,  the 
unit  may  be  protected  from  high  temperatures,  hazar dous  materials,  vibration  and  shock.      The 
microwave  sensors  should  be  installed    away  from  su ch  surroundings.    These  windows  should  be 
made  of  ceramic, Teflon  or  polypropylene  materials  having  no  water  content, through  which  there is 
minimum loss of microwaves.    
The detecting windows should be at least 60 mm in d iameter as microwaves pass more easily through 
larger  apertures.      The  distance  between  the  window   and  the  unit  should  be  less  than  200  mm, 
however, for larger windows this distance may be gr eater. 
   
            
forward  
rotation 
reversed   
rotation 
transmitter 
receiver   
						

							557 Long Road 
Pittsburgh, PA  15235, USA 
Email: 
[email protected] 
www.americansensors.com 
Tel: 412-242-5903   fax: 412-242-5908
 
 
2015  CWB-3000-W Microwave Detector  3 
 
SPECIFICATIONS:  
Power Supply 100V AC or 200V AC ± 10%, 50/60 Hz. 
Operating Range 
Without wave guide 
With wave guide 
 
80m or less 
10m or less (may be increased or decreased according to wave 
guide transmission loss) 
Frequency &  
Transmission Power 
Approx. 24 GHz 
Less than 10Mw 
Output Contacts 1C relay contacts 
250V ac, 3A (cos Ø = 1) 
Response Time Less than 20msec. 
Delay Function Off delay 20 ~ 500msec. 
Delay Time from Power On to Function Transmitter Controller:  Approx. 50 msec. 
Receiver Controller:  Approx. 50 msec. 
Power Consumption Transmitter Controller:  2VA 
Receiver Controller:  2VA 
Noise Immunity 
Square wave noise from noise simulator 
Rising time:  1 nanosecond,    
Width:  1 microsecond;  
± 1.5KV (normal and common modes) 
Ambient Operating Temperature 
Antenna 
Controller 
  
-50°C to +600°C 
-10°C to +55°C 
Housing Cast aluminium housing rating IP66 (NEMA4)  
Construction Antenna:  SUS 304;    Controller:  Aluminium die cast 
Total Weight                    Transmitter 
Receiver 
13 kg / 28 lbs.  
13 kg / 29 lbs  
 
* The operating distance may vary from sensor to se nsor and according to installation. 
 
DIMENSIONS: 
             
ORDERING INFORMATION:
 
 
Model  Input Voltage  Waveguide 
CWB-3000-W  includes: 
CWB-3000-WT Transmitter with Antenna and  
CWB-3000-WR Receiver  100-240 VAC 
  24VDC  Straight 
  60° Bent 
  90° Bent 
 
Transmitter 
& Receiver 
Antenna 
Antenna Cap 
 


 75mm 
/ 3” 
95mm /  3-3/4” 
324mm 
12-3/4” 
 
95mm 
/ 3-3/4” 
306.25mm / 12-1/4” 
75mm/  3” 
324mm 
12-3/4”