| Gases Measured | Methane and Nonmethane Hydrocarbons | | Description | Direct Methane and Non-Methane Hydrocarbon Analyzer | | Flow Rate | 0.5 L/min. | | Height (English) | 8.62 in. | | Height (Metric) | 219 mm | | Hertz | 50/60 Hz | | Depth (English) | 23 in. | | Depth (Metric) | 584 mm | | Linearity | ±.2.0% of span (at concentrations of 10% to 100% of span) | | Lower Detectable Limit | 0.050 ppm CH4 - 0.050 NMHC as propane (300 second averaging time) | | Precision | 2.0% of reading or 50 ppb (whichever is larger) | | Accuracy | ±1% of range | | Approvals and Certifications | ETL, CSA, UL, CE, UKCA | | Inputs | 16 digital inputs, user select programmable, TTL level, pulled high | | Item Description | Model 55i Direct Methane Non-Methane Hydrocarbon Analyzer | | Mounting Options | Bench, EIA rack, Retrofit rack | | Outputs | Analog outputs: 6 voltage outputs; 0 to 100mV, 1, 5, 10V (user selectable), 5% of full-scale over/under range (user selectable), 12 bit resolution, measurement output user selectable per channelDigital outputs: 1 power fail relay Form C, 10 relays Form A, user-selectable alarm output, relay logic, 100mA at 200VDCDigital inputs: 16 digital inputs, user select programmable, TTL level, pulled high | | Preset Measurement Ranges | 0 to 5, 50, 500 ppm, or 0 to 10, 100, 1000 ppm, or 0 to 20, 200, 2000 ppm , or 0 to 50, 500, 5000 ppm (Group selectable at time of order) | | Response Time | 70 sec. | | Span Drift | <2% span value (without auto calibration) | | Voltage | 100/115/220/240 V | | Weight (English) | 60 lb. | | Weight (Metric) | 17.7 kg | | Width (English) | 16.75 in. | | Width (Metric) | 425 mm | | Zero Noise | 0.025 ppm RMS | | Unit Size | Each |
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