CID Inc. (USA)
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| Brand | CID Inc. (USA) |
|---|---|
| Origin | USA |
| Model | CI-340 |
| CO₂ Range | 0–2000 ppm (standard), 0–3000 ppm (optional) |
| PAR Range | 0–2500 µmol·m⁻²·s⁻¹ |
| Flow Rate | 100–1000 mL/min |
| Operating Temp | 0–45 °C |
| Operating RH | 5–95% RH (non-condensing) |
| Battery Life | 4–6 h (standard operation), up to 10 h with low-power configuration |
| Weight | 1.5 kg (with leaf chamber & Li-ion battery) |
| Data Storage | 4 MB flash memory (~1.6 million data points) |
| Display | 40×6-character LCD (320×64 pixels) |
| Interface | USB |
| CO₂ Sensor | NDIR, 1 Hz chopper frequency, <2% accuracy, 0.1 ppm resolution |
| Humidity Sensor | Capacitive, 0–2100% RH, ±2% RH @10% RH, ±3.5% RH @90% RH |
| PAR Sensor | GaAsP photodiode with cosine correction, 400–700 nm, ±5 µmol·m⁻²·s⁻¹ accuracy |
| Air Temp Sensor | Thermocouple, –15–50 °C, ±0.1 °C |
| Leaf Temp Sensor | Non-contact infrared, –10–50 °C, ±0.3 °C |