| Sampling Method & Range | 
            Diffusion, 0-25% O2, 0-50,000ppm CO2 | 
        
        
            | Accuracy | 
            ±1% of full scale – O2 
            ±300 ppm, ± 3% of measured value – CO2 | 
        
        
            | Operating Temperature | 
            -0 to + 55 C | 
        
        
            | Display | 
            ¾” backlit LCD digital display | 
        
        
            | Sensor Type | 
            Long-life zirconium oxide sensor for O2 and NDIR for CO2 | 
        
        
            | Alarm indicators | 
            Built-in Audible 90dB horn, Orange LED alarm indicator for CO2, Red LED alarm indicator for O2 | 
        
        
            | Signal Outputs | 
            One user-adjustable Alarm relay for Oxygen, One user-adjustable Alarm relay for CO2. Relays are rated 2 amp 24VDC / 24VAC | 
        
        
            | Analog Output | 
            Analog 4-20mA output (Active), selectable for either Oxygen or CO2. Optional 0-5 VDC output for CO2. | 
        
        
            | Power Requirements | 
            24VDC 350mA | 
        
        
            | Dimensions | 
            6.5 (W) x 4.5 (H) x 3.25 (D) inches; (165.1 mm x 114.3 mm x 82.5 mm) | 
        
        
            | Weight | 
            1.6 lbs. (.8 kg) | 
        
        
            | Enclosure | 
            Polycarbonate | 
        
        
            | Calibration | 
            Calibration is not required for Oxygen. None for CO2 when Auto Cal function is activated. Periodic span adjustment as needed for Oxygen. | 
        
        
            | Country of Origin | 
            USA | 
        
        
            | Harmonized Tariff Code | 
            8531.10.0045 |