Incremental Encoders output a pulse string according to the rotational displacement of an axis. The number of rotations can be detected by counting the number of pulses.
There are 7 products of Incremental.
            
            
               Incremental 25-mm-dia. Rotary Encoder
            
            
                E6A2-C
            
        
    Compact Encoder with External Diameter of 25 mm
            
            
               Incremental 40-mm-dia. Rotary Encoder
            
            
                E6B2-C
            
        
    General-purpose Encoder with External Diameter of 40 mm
            
            
               Slim Incremental 50-mm-dia. Rotary Encoder
            
            
                E6C2-C
            
        
    General-purpose Encoder with External Diameter of 50 mm
            
            
               Rugged Incremental 50-mm-dia. Rotary Encoder
            
            
                E6C3-C
            
        
    Rugged Rotary Encoder
            
            
               High-resolution Encoder with Diameter of 55 mm
            
            
                E6D-C
            
        
    High-resolution Encoder
            
            
               Incremental 60-mm-dia. Rotary Encoder
            
            
                E6F-C
            
        
    Rugged Rotary Encoder
            
            
               Hollow-shaft Encoder with Diameter of 40 mm
            
            
                E6H-C
            
        
    Hollow-shaft Encoder