Californai Analytical FID analyzers rely on the Flame Ionization Detection principle to measure the total concentration of hydrocarbons in a gas sample. The gas sample becomes ionized in the flame and the electrostatic field causes the charged particles to migrate, creating a small current that is measured by the amplifier. The current is directly proportional to the amount of hydrocarbon in the sample. The 600 MHFID model measures Total Hydrocarbon and provides a means of differentiating between Methane and non-Methane hydrocarbons.
The Methane/Non-Methane option allows measurement of both methane and non-methane hydrocarbons. A solenoid value diverts the sample through a “cutter” assembly that contains a heated catalyst that removes (cuts) the non-methane hydrocarbons, leaving the methane-only concentration. The removal efficiency is 98 for Ethane and heavier hydrocarbons, with less than a 10% loss of methane. The subtraction of the methane-only number from the total hydrocarbon number provides the concentration of non-methane hydrocarbons in the sample.
FEATURES • Measures low ppm up to percent levels • Heated version for maximum stability and “hot/wet” sampling • Temperature-stabilized detector • Electronic fl ow control • Automatic fuel/air shutoff • Automatic calibration and ranging • Fast response time • Output options: voltage, current, RS-232 using AKProtocol and TCP/IP, Modbus • CE Mark and ETL listed – conform to UL STD 61010-1, Certified to CAN/CSA C22.2 STD 61010.1 • 1065-compliant configurations
CAI FID analyzers can measure THC or CH4 in ppm or percent levels. They are ideal for applications such as:
VOC abatement/scrubber efficiency Combustion engine testing EPA Method 25A compliance monitoring Continuous emission monitoring (CEMs) Vehicle emissions Fermentation monitoring Carbon bed breakthrough detection Process gas analysis
Detector: Flame Ionization Detection THC Ranges: Four user-defi nable ranges from 0-30 to 0-30,000 ppm as methane (contact CAI for ranges lower than 30 ppm) Response Time: 90% Full Scale in 1.5 seconds Resolution Detection Limit – 10 ppb carbon Accuracy: Better than 2% of reading at or above 2.0 ppm Precision: Better than 1% of Full Scale Linearity: Better than 1% of Full Scale Noise: Less than 1% of Full Scale Zero and Span Drift: Less than 1% of Full Scale per 24 hours O2 Effect: Less than 3% with H2/He fuel CH4 Effect: Less than 1.15 propane Flow Control: Electronic proportional pressure controller Sample Flow Rate: Typically 2.0 LPM Fuel Requirements: 40% H2/60% He (120cc/min)or 100% H2(60cc/min) Fuel Inlet Pressure: 25 psig Air Requirements: Less than 1 ppm carbon purified or synthetic air (220cc/min for H2/He; 300cc/min for H2) Air Inlet Pressure: 25 psig Fuel and Air Control: Electronic proportional pressure controller Readout: As ppm CH4 or C3H8 Outputs: Voltage or current, RS-232, TCP/IP and Modbus Diagnostics: Oven Temperature, Burner Temperature, Cutter Temperature, Sample/Fuel/Air Pressures, Flow Rates and EPC Control Voltages Special Features: Calculated NMHC, auto ranging Ignition: Local, remote or automatic Sample Temperature: Up to 191°C, non-condensing HFID); 50°C, non-condensing (FID) Oven Temperature: 200°C HFID Ambient Temperature: 5 to 40°C Ambient Humidity: Less than 90% RH (non-condensing) Warm-up Time: 1 hour (typical) Fittings: ¼-inch tube Power Requirements: 115/230 VAC, 50/60 Hz, 750 Watts max. Dimensions: 5¼” H x 19” W x 23” D Weight: 50 lbs.
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