Manual

FoamLogix, Model 2.1A and 1.7AHP Class “A”
Electronic Foam Proportioning Systems
39
2. The downstream piping length is not as
critical, but there must be a short length
of straight pipe with no ttings or valves
immediately after the ow sensor paddle
wheel. Two to three times the pipe diam eter
is recommended.
     37
   

  
       
        
      
     
       
  
       
      
    

  
       
   
      
       
        
        
       
       
       
     
     
        
        
      
   
    
  
  
   
  
 
 

  
 
   
 
 
 
 
  

 

       
    
 
 

    
     
   

   
 
 
   
    
     37
   

  
       
        
      
     
       
  
       
      
    

  
       
   
      
       
        
        
       
       
       
     
     
        
        
      
   
    
  
  
   
  
 
 

  
 
   
 
 
 
 
  

 

       
    
 
 
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    
     
   
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   
 
 
   
    
Figure 14: Typical Reduced Size Sensor Piping Arrangement
Figure 15: Flow Sensor Placement
3. Do not mount a ow sensor directly after
an elbow or valve. Valves create severe
turbulence when they are “Gated”.
Saddle Clamp Installation
See Figure 16: Flow Sensor/Saddle Clamp
Installation“ on page 40.
Installation of the Paddle Wheel Flow Sensor
using a saddle clamp requires a 1.385“/ 1.390“
(35/35.3mm) bored hole in the pipe.
A minimum of six times the pipe diameter of straight
run pipe without any ttings is neces sary prior to
the position of this hole.
The ow sensor requires a spacer and eight
stainless steel internal hex head screws. These
are supplied with the sensor.
Four 6-32 x 1/2“ screws attach the spacer to the
saddle clamp mount, and four 6-32 x 3/4“ screws
with lock washers attach the paddle wheel to the
spacer.