Specifications:
General
- Dimensions: 38.5 cm L × 52 cm W × 18.5 cm H
- Weight: 7.7 kg
- Weatherproof Rating: Tested to IEC IP55 standard
- Operating Range:
- Temperature: –20 to 45 °C
- Humidity: 0 to 95% RH, non-condensing
- User Data Storage: 8 GB total non-volatile
- GPS: Accuracy 2.5 m CEP
- Coverage Area:
- Maximum radius from LI-8250 to chambers: 15.0 m with one extension tube.
- Maximum diameter of measurement circle: 30.0 m with one extension tube on each chamber.
- Plumbing:
- Flow rate to/from chambers: ~2 to 3 lpm
- Pump type: Diaphragm (pumps in the analyzers subsample air stream in the LI-8250)
- Barometric Pressure Sensor:
- Measurement Range: 20 to 110 kPa
- Sensor Accuracy: ±0.4 kPa from 50 to 110 kPa
- Resolution: 0.006 kPa
Communication
- Seven LED Indicators: Power, Ready, Ethernet activity (3), USB activity (2)
- Connectivity: Three Ethernet Ports, Wi-Fi (not available in some countries)
- Wi-Fi Compatibility: 2.4 GHz, 802.11 a/b/g/n/ac
- Connectivity Ports:
- USB-A: One sealed and strain-relieved for connection to LI-870 CO2/H2O Analyzer
- USB-A: Two standard, internal for mass storage (file transfer) or a country specific Wi-Fi adapter.
- RJ-45 Ethernet: Three sealed and strain-relieved for connection to LI-COR Trace Gas Analyzers, site Ethernet network, or cellular modem. Connectors also accept standard, non-sealed RJ-45 Ethernet cables for lab use.
- Output Port Connector: RS-422 communication plus 24 VDC power, full duplex, 115,200 baud. +24 VDC output power is current limited to ~1.8 A per output port.
Power
- Power Requirements: 10 to 30 VDC (120 VAC and 240 VAC with optional power supply). The LI-8250 powers the LI-870 when connected. Other analyzers are powered separately. See Table 1 for total system power requirements.
Table 1. Total system power requirements.
| Typical Power Consumption (W) | |||
|---|---|---|---|
| Instrument | Idle | Sampling/ Moving | Max/ Warm-up |
| LI-8250 | 4.8 | 15.6 | 18.2 |
| 8200-104 (each) | 0.36 | 4.8 | N/A |
| LI-870 | 5.0 | 5.0 | 14.0 |
Note: The max listed for the LI-8250 is a typical maximum, there is no additional warm-up power. Chamber power reaches 4.8 W only when opening or closing, not the entire time of sampling.
AC to DC Power Supply (8250-770)
- Dimensions: 15 cm L × 12.5 cm W × 8.5 cm H
- Weight: 1.3 kg
- Weatherproof Rating: Tested to IEC IP55 standard
- Environmental Operating Conditions: Tested to IP55 for dust and water ingress
- Operating Temperature Range: –20 to 50 °C
- Power Requirements: 100 to 240 VAC, 50/60 Hz, 120 VA
- Output Voltage: 12 VDC, 6.67 A
Catalogue: PDF
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