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California Analytics 600 Series Analyzer

California Analytics 600 Series Analyzer California Analytical Instruments Get Quote
 
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METHOD OF OPERATION

The approach utilizes CAI's standard 600 series analyzer with dual NDIR detectors.  One detector is calibrated with methane and has a proprietary optical filter inserted into its light path which isolates a narrow portion of a methane IR spectrum peak which is away from absorption peaks of all other non-methane hydrocarbons.  This provides a true methane only measurement.  The other detector is also calibrated with methane to read total hydrocarbons (THC).  Propane is measured on the THC channel and a C3H8 response factor is determined.  As sample is introduced, it is split and methane and THC results are measured.  Externally, methane is subtracted from the THC results and then multiplied by the propane response factor to determine the non-methane hydrocarbons relative to propane per Part 60, Method 25B.

Technical Specifications

CH4 Ranges: 0 - 1,000 ppm up to 100%
THC Ranges: 0 - 1,000 ppm up to 100%
Response Time (IR) - 90% of Full Scale in < 3 seconds, depending on cell length, flow rate and time constant
IR Sample Cell Stainless steel w/replaceable gold cell liner
Resolution Typically 0.1% of Full Scale
Repeatability Better than 1.0% of Full Scale
Linearity Better than 1.0% of Full Scale of calibrated ranges
Noise Less than 1% of Full Scale of factory calibrated ranges
Zero and Span Drift Less than 1% of Full Scale
Sample Flow Rate 0.5 to 2.0 LPM
Outputs Available Voltage, current, TCP/IP, RS-232, Modbus
Display 3\" x 5\" backlit LCD Thru Panel Window
Sample Temperature Up to 50 degrees C, non-condensing
Ambient Temperature 0 to 115 degrees F
Ambient Humidity Less than 90% RH (non-condensing)
Fittings 1/4-inch tube
Power Requirements 115/230 (+-10) VAC; 50/60Hz