3.1.1.1 Analyzer must be meet the performance specification found in USEPA Reference Method 21. https://www.epa.gov/sites/default/files/2017- 08/documents/method_21.pdf 3.1.1.2 Analyzer must be equipped with both a flame ionization detector (FID) and photo ionization detector (PID). 3.1.1.3 FID fuel. 99.99% hydrogen with a hydrogen fuel tank refilling assembly. 3.1.1.4 Analyzer certifications. USA: Class I, Division 1, Groups A,B,C,D T3 Canada: Class I, Zone 1, Ex d ib IIC T3 Gb ATEX: CE0359 Ex II 2 G Ex d ib IIC T3 Gb IECEx: Ex d ib IIC T3 Gb 3.1.1.5 Detectable Concentration Ranges. FID: Minimum range of 0 ppm to 30,000 ppm as methane with a minimum detectable concentration 0.5 ppm. PID: Minimum range 0 to 2,000 ppm as isobutylene with a minimum detectable concentration 0.5 ppm. 3.1.1.6 Ambient temperature operating range. Minimum range of 14 to 113 degrees Fahrenheit.
