Greenspan EC-2500A Operational manual

2250
CONTENTS
1 Introduction ................................................................................................................................. 3
    
   
     
   
    
      
2 Sensor Overview .......................................................................................................................... 6
     
     
    
     
   
      
3 Applications ................................................................................................................................. 8
4 Instrument Details ....................................................................................................................... 9
    
   
    
     
5 Sensor Wiring & Connec�ons ..................................................................................................... 12
    
    
6 Installation and Deployment ConsideraGons ............................................................................. 14
        
      
    
     
      
       
   
7 EC250 Specifications ................................................................................................................. 17
8 Contact Us ..................................................................................................................................18

3250
1 Introduction
1.1 System Description
            
              
    
           
             
       
                 

                
               
 
            
            
  
1.2 CerGfication
             
             
         
•The instrument is visually inspected, marked and labelled.
•The complete sensor calibration record is archived for reference, and batch number
informa�on is kept on file for staDstical analysis.
•An individual Certificate of Conformance is issued to the customer.

4250
1.3 Unpacking and Inspection
              
                 
              
               
                
              
                
   
                    
               
                
            
               
             
1.4 Serial Number
     
              
               
MODEL EC250
RANGE 0 – xxxx μS NORM (S)
S/N 012345
                    
           
1.5 Warranty Policy
            12
months     
                
  
             
            
   
                
           

5250
             
             
   
              
               
       
               
 
            
     
1.6 Factory Service & Repair
             
            
                
            
             
            
                
              
               
            
             
            
             
               
            
                
   

6250
2 Sensor Overview
2.1 Theory of Measurement
                 
                
 
              
               
     
               
               
                
              
         
                
             
         
2.2 Toroidal Sensing Head
             
             
               
              
               
                
              

2.3 Temperature Sensor
           
               
2.4 Microprocessor Control Unit
             
              
                
                 
         

7250
2.5 Supply Voltage
                    
                
              
2.5.1 Calculating the Minimum Supply Voltage
               

Vs = 2 * (Sc * Cr * (Cl / 100)) + Vm

Sc =     
Cr       
Cl    
Vm     
      
Sc = ECfs + PTfs + Sqc

ECfs        
PTfs =       
Sqc     
                      
            
                      
 
Sc     
 
Vs          
   


8250
3 Applications
         
•    
•       
•   
•    
•  

9250
4 Instrument Details
4.1 Sensor Design
        
•    
• 
•      
• 
•    
•    
47mm OD 316 SS or Acetal sensor body
containing microprocessor controlled electronics
Power and Data Cable
Toroidal Sensing Head Double O-ring sealing
Temperature Sensor Moulded cable entry

10 250
4.1.1 Cable Details
             
            
                 
            
                 
               
            
              

4.1.2 Mechanical Specifications
•         
•     
•     
•       
•   
•     
•   
•    
•     
•            
 
                    
                 
           
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Cable Construction
1 –Vent Tube: Polyamide
(size ID x OD) 2.40 x 3.20 mm
2 – Aramid Fibre
3 - 12 x Conductors
7 x 0.20 mm Tinned Copper
SecĢon = 0.22mm2 AWG24
InsulaĢon: Polypropylene
(size) = 1.10 mm ± 0.05 mm
4 - Tape: Polyester
5 – Drain Wire: 7x0.20 TinCu
6- Tape: Polyester Aluminium
7 - Jacket: Polyurethane black,
(size OD) 8.05 mm ± 0.15
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