| Sampling Method & Range | 
            Diffusion, 0-25% O2 | 
        
        
            | Accuracy | 
            ± 1% of full scale | 
        
        
            | Operating Temperature | 
            -40 to + 55 C | 
        
        
            | Display | 
            ¾” backlit LCD digital display | 
        
        
            | Sensor Type | 
            Long-life zirconium oxide sensor cell. | 
        
        
            | Sensor Life | 
            10+ years under normal conditions | 
        
        
            | Signal Outputs | 
            4-20 mA analog output (Active) 
            Dual User Selectable Relays (2amp 30VDC / 240VAC), Audible horn 
            Please contact PureAire for the available RS-485 option | 
        
        
            | Power Requirements | 
            24VDC 250mA | 
        
        
            | Dimensions | 
            6.5 (W) x 4.5 (H) x 3.25 (D) inches; (165.1 x 114.3 x 82.5 mm) | 
        
        
            | Weight | 
            1.6 lbs.(.8 kg) | 
        
        
            | Enclosure | 
            Polycarbonate | 
        
        
            | Approvals | 
            Ce approval & factory calibrated against a NIST traceable reference standard | 
        
        
            | Calibration | 
            Calibration is not required. Periodic span adjustment as needed. | 
        
        
            | Country of Origin | 
            USA | 
        
        
            | Harmonized Tariff Code | 
            8531.10.0045 |