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| Brand | Dynamax |
|---|---|
| Origin | USA |
| Model | DEX |
| Measurement Principle | Resistive Strain-Bridge Displacement Sensing with Integrated Temperature Compensation |
| Operating Temperature Range | –10 to 50 °C |
| Accuracy | ±0.050 mm (for ΔT > 20 °C) |
| Temperature Stability | 0.0025 mm/°C |
| Output Signal | Analog ±5 mV or ±2.5 mV (model-dependent) |
| Sensitivity | 0.05–0.5 mV/mm |
| Linearity Error | ±0.004 to ±0.01 mV/mm |
| Electrical Noise | ±0.01 mV |
| Compatible Data Loggers | Supports up to 8 or 32 sensors per system |
| IP-Rated Enclosure | Sealed Electronics for Outdoor & Field Deployment |
| Brand | LI-COR |
|---|---|
| Origin | USA |
| Model | LI-6800 Advanced Photosynthesis & Fluorescence Measurement System with Multiple Leaf Chambers |
| CO₂ Analyzer Principle | Non-Dispersive Infrared (NDIR) |
| CO₂ Precision | ≤0.1 µmol/mol RMS @ 4 s average at 400 µmol/mol |
| CO₂ Range | 0–3100 µmol/mol |
| CO₂ Control Range | 0–2000 µmol/mol |
| Fluorescence Excitation | Pulsed-Amplitude Modulation (PAM) + Continuous Actinic Light |
| Saturating Pulse Intensity | 0–16,000 µmol m⁻² s⁻¹ |
| Actinic Light Range (Red/Blue) | 0–3000 µmol m⁻² s⁻¹ |
| Far-Red Light Range | 0–20 µmol m⁻² s⁻¹ |
| Red LED Peak | 625 nm |
| Blue LED Peak | 475 nm |
| Far-Red LED Peak | 735 nm |
| OJIP Kinetics Capability | Yes |
| ETR, ΦPSII, NPQ, Fᵥ/Fₘ, 1−qL Calculation | Integrated in Firmware |
| Leaf Chamber Options | 6800-01A (Fluorescence Chamber), 6800-02 (3×3 cm Red/Blue LED Source), 6800-03 (RGBW Large Area Source), 6800-09 (Soil CO₂/H₂O Flux Chamber), 6800-12A (3×3 cm Transparent Chamber), 6800-13 (36 cm² Large Leaf Chamber), 6800-17 (Whole-Plant Chamber for Arabidopsis & Turf), 6800-18 (Suspended Algal Culture Chamber), 6800-19 (Custom Chamber Adapter), 6800-24 (Bryophyte & Lichen Chamber), 6800-89 (Insect & Small Animal Respirometry Chamber) |
| Brand | LI-COR |
|---|---|
| Origin | USA |
| Model | LI-600 |
| Weight | 0.73 kg (with fluorometer) |
| Dimensions | 32.4 × 16.9 × 6.2 cm (L × W × H) |
| Operating Temperature | 0–50 °C |
| Atmospheric Pressure Range | 50–110 kPa |
| Relative Humidity Range | 0–85 %RH (non-condensing) |
| GPS Accuracy | 2.5 m CEP |
| Display | 6.8 cm diagonal, 400 × 240 pixels, sunlight-readable monochrome LCD |
| Battery | Rechargeable Li-ion, 5200 mAh, 8 h typical operation |
| Charging | Micro-USB with Qualcomm® Quick Charge™ 2.0/3.0 (full charge in ~3.5 h, fast charge in ~2 h) |
| Data Storage | 128 MB internal |
| USB Interface | Micro-USB for data transfer and charging |
| Bar Code Scanner | 1D/2D (Code 39, Code 128, PDF417, UPC, Data Matrix, QR) |
| PAR Sensor | Quantum sensor calibrated to ±10 % of reading (NIST-traceable), cosine-corrected to 60° incidence |
| Leaf Temperature Sensor | IR-based, ±0.5 °C accuracy |
| RH Sensor | ±2 %RH accuracy, auto-matching capability |
| Gaseous Flow Rates | Low: 75 µmol/s, Medium: 115 µmol/s, High: 150 µmol/s |
| Stomatal Conductance Measurement Time | 5–15 s (species- and condition-dependent) |
| Chlorophyll Fluorescence Measurement Time | 1 s |
| Measured Parameters | g<sub>sw</sub>, g<sub>bw</sub>, g<sub>tw</sub>, E, VPD<sub>leaf</sub>, VP<sub>cham</sub>, VP<sub>ref</sub>, VP<sub>leaf</sub>, H<sub>2</sub>O<sub>ref</sub>, H<sub>2</sub>O<sub>samp</sub>, H<sub>2</sub>O<sub>leaf</sub>, F<sub>o</sub>, F<sub>m</sub>, F<sub>v</sub>/F<sub>m</sub>, F, F<sub>s</sub>, F<sub>o</sub>′, F<sub>m</sub>′, φPSII, ETR, F<sub>v</sub>′/F<sub>m</sub>′, qP (F<sub>q</sub>′/F<sub>v</sub>′), NPQ, qN, qE, qI, qL |
| Compliance | IEC 62471:2006 (Exempt Group LED safety) |
| Brand | LI-COR |
|---|---|
| Origin | USA |
| Model | 6800-18 Aquatic Measurement Chamber |
| Chamber Working Volume | 0–20 mL (recommended 15 mL) |
| CO₂ Analyzer | NDIR, Range 0–3100 µmol/mol, Precision ≤0.1 µmol/mol RMS @ 4 s avg at 400 µmol/mol |
| CO₂ Control Range | 0–2000 µmol/mol |
| Actinic Light Sources | Red (625 nm), Blue (475 nm), Far-Red (735 nm) |
| Fluorescence Detection | PAM-modulated chlorophyll fluorescence |
| Chamber Wetted Materials | 316 stainless steel, float glass, Viton®, PTFE, silicone, acetal |
| Operating Temperature | 0–50 °C (non-condensing, no direct solar exposure) |
| Liquid Sample Temp Range | freezing point to 50 °C |
| Salinity Compatibility | 0–35 ppt |
| pH Interface | BNC-compatible passive glass electrode (12 mm OD, O-ring sealed), -59 mV/pH slope (user-calibrated) |
| Data Output | ASCII text & Excel (.xlsx) with embedded calculation formulas |
| Brand | LI-COR |
|---|---|
| Origin | USA |
| Model | LI-6800 |
| CO₂ Range | 0–>2000 µmol/mol (control resolution ≤1 µmol/mol) |
| H₂O Control | 0–90% RH |
| Flow Rate | 0–2000 cm³/min |
| Fluorescence Acquisition Rate | 250 kHz |
| Saturation Flash Intensity | up to 16,000 µmol·m⁻²·s⁻¹ |
| Light Sources | 6800-01A (0–3000 µmol·m⁻²·s⁻¹), 6800-02 (0–>2000 µmol·m⁻²·s⁻¹), 6800-03 (0–3000 µmol·m⁻²·s⁻¹) |
| Chamber Pressurization | 0–200 Pa |
| Temperature Control Range | ±10°C around ambient, resolution <0.1°C |
| RACiR™ Protocol Duration | ~5 min for full A-Ci curve |
| OJIP Kinetics | Supported via Multiphase Flash™ technology |
| Simultaneous Gas Exchange & Fluorescence | Yes |
| Leaf Area Estimation | Automated in situ calculation |
| Compliance | Designed for GLP-compliant workflows |
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