LI-7500A Specifications
- Data Storage: Removable industrial grade USB flash storage device (4 GB provided, addressable capacity > 16 GB).
- Data Communication: Ethernet, Synchronous Devices for Measurement (SDM; >50 Hz), RS-232 (115,200 baud; 20 records per second max), 6 DACs (0-5 V; 300 Hz).
- Inputs: Ethernet, 4 analog input channels.
- Operating Temperature Range: -25 to 50°C (-40 to 50 °C verification test available on request).
- Power Requirements: 10.5 to 30 volts DC.
| CO2 | H2O | |
|---|---|---|
| Calibration range | 0-3000 µmol mol-1 | 0 - 60 mmol mol-1 |
| Accuracy | Within 1% of reading | Within 2% of reading |
| Zero drift (per °C) | ±0.1 ppm typical ±0.3 ppm max. |
±0.03 ppt typical ±0.05 ppt max. |
| 5 Hz 10 Hz 20 HzRMS noise: (typical @ 370 ppm CO2 and 10 mmol mol-1 H2O) |
0.08 ppm 0.11 ppm 0.16 ppm |
0.0034 ppt 0.0047 ppt 0.0067 ppt |
| Gain drift (% of reading per °C) |
±0.02% typical ±0.1% max. @ 370 ppm |
±0.15% typical ±0.30% max. @ 20 ppt |
| Direct sensitivity to H2O (mol CO2/mol H2O) |
±2.00E-05 typical ±4.00E-05 max. |
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| Direct sensitivity to CO2 (mol H2O/mol CO2) |
--- --- |
±0.02 typical ±0.05 max. |
- Power Consumption: 12 W nominal
(up to 30 W during startup). - Type: Absolute, non-dispersive infrared gas analyzer.
- Detector Thermoelectrically cooled lead selenide.
- Bandwidth: 5, 10, or 20 Hz, user-selectable.
- User Interface: Windows® based.
- LI-7550 Analyzer Interface Unit Dimensions:
- Size: 35 cm x 30 cm x 15 cm (13.8” x 12” x 6”) external dimensions.
- Weight: 4.4 kg (10 lbs).
- LI-7500A Open Path CO2/H2O Analyzer Dimensions:
- Size: 6.5 cm (2.6” diameter, 30 cm (12”) length.
- Weight: 0.75 kg (1.65 lbs.).
- Cable length: 5 meters (data and IRGA cables).
- 7550-101 Auxiliary Sensor Interface:
- Inputs: 4 general purpose ±5 V.
- Size: 11.5 cm x 6.5 cm x 4.2 cm (4.5” x 2.6” x 1.7”).
- Weight: 0.39 kg (0.85 lbs) including mounting bracket
Specifications subject to change without notice.