Material Case material: Housing: aluminum alloy (ADC 12) Front cover: aluminum alloy (ADC 12) Terminal cover: aluminum alloy (ADC 12) Window: reinforced glass Cover O-ring: NBR rubber Wet parts materials: Manifold: 304 stainless steel Adapter: 304 stainless steel μTCD sensor: platinum, glass, gold, Kovar, silicon O-ring: Fluoro rubber Process gas specifications Temperature: .10 to +50 °C Pressure: 110 kPa (abs) max. (at GasCVD process connection port inlet) Flow rate: 50 ±10 ml/min Dust: Less than 1 μm in diameter, 1 mg/m3 max. Mist: none at .20 °C Moisture: dew-point temperature .20 °C max. Table1. Acceptable limits of components /Unit: mol % Natural gas LNG Code A Natural Gas Code F OIML R140 Code G LNG CH4(C1) Methane 80 to 100 80 to 100 85 to 100 C2H6(C2) Ethane 0 to 11 0 to 11 0 to 14 C3H8(C3) Propane 0 to 5 0 to 5 0 to 4 C4+(C4+) * Butane+higher alkanes 0 to 2 0 to 1.2 0 to 2 N2 Nitrogen 0 to 7 0 to 7 0 to 1 CO2 Carbon Dioxide 0 to 2 0 to 2 0 Condition C1>C2.C3.C4+ 0.4*C2.C3 0.6*C3.C4+ CO2.1→C4+.0.3 C4+-CO2.0.6 (Except in case 1C2.C3.C4+ 0.4*C2.C3 0.6*C3.C4+ CO2.1→C4+.0.4 CO2.3→C4+.0.35 C1>C2.C3.C4+ C1.95→N2: 0 to 1 C1<95→N2: 0 to 0.2 *Butane must be higher than pentane+higher alkanes, C4>(C5+C6） Calibration conditions Calibration: Automatic/Manual Calibration gas: Pure methane (99.995 purity min.) Installation conditions Ambient temperature: .10 to +50 °C Ambient humidity: 95 % RH max. Mass: 2.5 kg Table2. Performance/Unit: %RD(%reading) Natural gas LNG Code A Natural Gas Code F OIML R140 Code G LNG Accuracy *1 ±1.5 % RD ±1 % RD ±1 % RD Repeatability *2 ±0.2 % RD ±0.2 % RD ±0.2 % RD Variations *2 Ambient temp. *3 ±0.4 % RD ±0.4 % RD ±0.2 % RD Atmospheric press. *4 ±0.2 % RD ±0.2 % RD ±0.2 % RD Sample gas flow *5 ±0.2 % RD ±0.2 % RD ±0.2 % RD *1: Accuracy=(Trueness)+(Repeatability) .... ...................................................................................................................................... .... .............................................................................................................................................................. *2: Repeatability=σ*2√2. σ:Standard deviations of the measurement value. *3:Ambient temperature effect per 30 °C change. Range from -10 to +50 °C. *4: Static pressure effect per 30 hPa change. Range from 983 to 1043 hPa. *5: Sampling gas flow rate effect per 10 ml/min change. Range from 40 to 60 mL/min. Table3. Output range (LRV-URV)/Unit: MJ/m3 Natural gas LNG Code A Natural Gas Code F OIML R140 Code G LNG 1 4 6 15 °C/15 °C 20 °C/20 °C 25 °C/20 °C 1 SCV 35-45 35-45 37-47 4 WI_Hs 46-56 48-58 7 ICV 31-41 33-43 A WI_Hi 41-51 43-53 2 3 5 0 °C/0 °C 25 °C/0 °C 15 °C/0 °C 1 SCV 37-47 39-49 4 WI_Hs 48-58 50-60 7 ICV 33-43 35-45 A WI_Hi 43-53 45-55 SCV: Superior Calorific Value: MJ/m3 ................................................................................................3 ICV: Inferior Calorific Value: MJ/m3 ..................................................................................................3 2