Monitoring of Impurity in Hydrogen Gas for FCV
| Model | GA-370 | |
| Gases measured | CO, CO2, CH4 | |
| Bulk gases | N2, O2, He, Ar, H2, Air | |
| Number of measurement components | 1 component or 2 components (specify a measuring balance gas) | |
| Measuring principle | Cross-flow modulation non-dispersive infrared (NDIR) absorption method | |
| Measurement ranges | 0 to 1/2/5/10 ppm | |
| Lowest detection limit (2σ) | 10 ppb | |
| Repeatability | ≤ ± 2% of full scale | |
| Indication error | ≤ ± 2% of full scale | |
| Zero Drift | ≤ ± 0.02 ppm/day, ≤ ± 0.03 ppm/week | |
| Span Drift | ≤ ± 2% of full scale/day, ≤ ± 2% of full scale/week | |
| Response time (T90) | ≤ 180s | |
| Gas flow rate | Sample gas : approx. 3.5L/min, reference gas : approx. 3.5L/min, span gas: approx. 3.5L/min Note: A delivery pressure of 50-100kPa is recommended for both sample and reference gas. | |
| Analog output | Max. 2 channels isolated output (2 components) Select one from 0 to 1V, 0 to 10V, 0 to 16mA, 4 to 20mA or 0 to 20mA. Current output : Allowable load resistance 750Ω or less | |
| Installation conditions | Ambient temperature | 0 to 40°C |
| Ambient relative humidity | ≤85% | |
| Dust | Less than environmental standard | |
| Vibration | ≤ 0.29m/s², at ≤ 100Hz | |
| External dimensions, weight | 430(W) x 221(H) x 555(D) mm (excluding protrusions), approx. 18kg | |
| Power supply | 100 to 240V AC, ≤ ± 10% (max. voltage: 250V AC) | |
| Power consumption | Approx. 100VA |
