| Model | FG150B | FG200B | FG250B | FG300B | 
        
            | Diameters | 150mm | 200mm | 250mm | 300mm | 
        
            | Flow rate range (m3/h)
 | Maximum flow rate Qmax | 200 | 350 | 550 | 800 | 
        
            | Maximum non-full water flow rate Qw *1 | 50 | 100 | 150 | 300 | 
        
            | Minimum flow rate Qmin | 0.2 | 0.35 | 0.55 | 2.00 | 
        
            | Accumulated accuracy | Up to ± 2% (Maximum flow rate)Achieves high accuracy within the reading scale (RS) tolerance in most of the extensive ranges of flow rates. | 
        
            | Mounting conditions | Hydraulic conditions | Mount in the piping of smooth and natural flow rates.Mount in the location without the impact of backwater from downstream. *2 | 
        
            | Mounting on discharge ends | Length of straight pipes | Please provide straight piping of 10D or greater in upstream with the same inner diameter as the detector. *2 | 
        
            | Mounting in the middle of piping | Please provide straight piping of 10D or greater in upstream and 5D or greater in downstream with the same inner diameter as the detector. *2 | 
        
            | Pipeline slopes *3 | Horizontal mounting model | 0% *4 | 
        
            | Inclined mounting model | 1 – 10% *4 | 
        
            | Environmental conditions | Measurable fluid temperature | 0 to +45℃ | 
        
            | Ambient temperature | -10 to +55℃ (No freezing) | 
        
            | Liquid pressure | 0.3 MPa or less (when full) | 
        
            | Conductivity | 0.1 – 4.0mS/cm | 
        
            | Structure | IPX 8 (10 days in a year in water of 10-meter depth, or 30 days in a year in water of 3-meter depth) | 
        
            | Materials Other conditions
 | Body | Unplasticized polyvinyl chloride | 
        
            | Electrodes and grounding ring | SUS316L・SUS304 | 
        
            | Cable | One dedicated cable, 12 mm, double-line and shieldedStandard cable length is 10 meters (It can be extended up to 100 meters using optional relay boxes.)
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