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| Brand | HORIBA |
|---|---|
| Origin | Japan |
| Model | GA-370 |
| Measurable Gases | CO, CO₂, CH₄ |
| Background Gases | N₂, O₂, He, Ar, H₂, Air |
| Measurement Principle | Dual-beam Non-Dispersive Infrared (NDIR) with Alternating Flow Modulation |
| Detection Limit (2σ) | 10 ppb |
| Range | 0–1/2/5/10 ppm |
| Repeatability | ≤ ±2% F.S. |
| Linearity | ≤ ±2% F.S. |
| Zero Drift | ≤ ±0.02 ppm/day, ≤ ±0.03 ppm/week |
| Span Drift | ≤ ±2% F.S./day, ≤ ±3% F.S./week |
| Response Time (T90) | ≤ 180 s |
| Sample & Reference Flow Rate | ~3.5 L/min each (at 50–100 kPa) |
| Analog Outputs | Up to two isolated outputs (0–1 V, 0–10 V, 0–16 mA, 4–20 mA, or 0–20 mA) |
| Operating Temperature | 0–40 °C |
| Humidity | ≤ 85% RH (non-condensing) |
| Vibration Tolerance | ≤ 0.29 m/s² at ≤ 100 Hz |
| Dimensions (W×H×D) | 430 × 221 × 555 mm (including protrusions) |
| Weight | ~18 kg |
| Power Supply | 100–240 V AC, ±10%, max. 250 V |
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