LI-8100A Specifications
Sort Specifications by Configuration:All Specifications
Single Chamber Survey Configuration
Single Chamber Long-Term Configuration
Multiplexed Long-term Configuration
Ground Level CO2 Concentration Configuration
Net Carbon Exchange Configuration
Analyzer Control Unit
- Power Requirements:
- 10.5-28 VDC
- 3A @ 12V (36W) maximum during warm-up with heaters on
- 1A @ 12V (12W) average after warm-up with heaters on
- Operating Range:
- Temperature: -20 °C to 45 °C
- Relative Humidity: 0 to 95% RH, Non-Condensing
- Weatherproof Rating: Tested to IEC IP55 standard
- Dimensions: 29 cm L x 38.1 cm W x 16.5 cm H (11.4" x 15" x 6.5")
- Weight: 5.3 kg (11.8 lb.) without battery; 6.7 kg (14.8 lb.) with battery
- Battery Weight: 1.4 kg (3.0 lb.)
- Memory: 18 MB on-board flash memory for data collection (32 MB total)
- Compact Flash: Type I industrial grade, 1 GB with adapter sleeve included, will accept Type II with appropriate adapter sleeve.
- Wireless PC Card: Fixed wireless networking Type II PC Card. Cisco Systems Aironet® 350 Series 11 Mbps DSSS for Wi-Fi (802.11b) networking
- RS-232
- Signal output rate: 1 Hz
- Baud rate: 57,600 bps
- Hand-held Device Requirements:
- Apple iOS 4.0 or greater
- Pressure Sensor:
- Measurement Range: 15-115 kPA
- Accuracy: 1.5% over 0 to 85 °C
- Maximum Gas Flow Rate: ~2.0 lpm
Infrared Gas Analyzer
- Measurement Principle: Non-Dispersive Infrared
- Traceability: Traceable to WMO standards for CO2. NIST traceable LI-610 Portable Dew Point Generator for H2O
CO2
- Measurement Range: 0-20,000 ppm
- Accuracy: 1.5% of reading
- Calibration Drift:
- Drift at 0 ppm: < 0.15 ppm/°C
- Span Drift1: < 0.03 %/°C
- Total Drift at 370 ppm: < 0.4 ppm/°C
- RMS Noise at 370 ppm with 1 sec signal averaging: < 1 ppm
- Sensitivity to water vapor: < 0.1 ppm CO2/mmol/mol H2O
H2O
- Measurement Range: 0-60 ppt
- Accuracy: 1.5% of reading
- Calibration Drift:
- Drift at 0 ppt: < 0.003 mmol/mol/°C
- Span Drift1: < 0.03 %/°C
- Total Drift at 10 ppt: < 0.009 mmol/mol/°C
- RMS Noise at 10 ppt with 1 sec signal averaging: <0.01 mmol/mol
- Sensitivity to CO2: < 0.0001 mmol/mol H2O/ppm CO2
1 Residual error after zero correction
Auxiliary Sensor Interface
- Dimensions: 10.2 cm L x 3.8 cm W x 6.4 cm H (4" x 1.5" x 2.5")
- Inputs:
- 4 Thermocouple channels:(Type E, J, or T)
- 4 General input channels: (0-5 VDC)
- Power Out: 0-5 VDC
- Power In: 10.5-28 VDC
- Connections: Terminal strip with screw posts
Accessories:
- Soil Temperature Probe: (Type E): 6.4 mm (0.25") dia., 250 mm (10") immersion length
- Soil Temperature Thermistor:
- 6 foot cable accuracy: ± 1.0 °C from -20 to 50 °C
- Soil Moisture Probe: (ECH2O Model EC-5): 5 cm (2") length
- Soil Moisture Probe: (Theta Probe Model ML2)
8100-405 GPS Accessory
- Physical Characteristics
- Size 61 mm (2.4" ) diameter, and 19.5 mm (0.77" ) tall
- Weight GPS 18x PC: 6.3 oz (180 g)
- Case Material Polycarbonate thermoplastic
- Waterproof rating: tested to IEC 60529 IPX7 standard
- Cable Length 2 meters
- Electrical Characteristics
- Input Voltage
- GPS 18x PC: 8-30 VDC
- CMOS Serial Output Levels
- GPS 18x PC: 0 VDC to 5 VDC (Asynchronous Serial, TIA-232-F (RS-232) Compatible Polarity)
- GPS Receiver Sensitivity -185 dBW minimum
- Input Voltage
- Environmental Characteristics
- Operating Temperature: -30°C to +80°C (-22°F to +176°F)
- Storage Temperature: -40°C to +90°C (-40°F to +194°F)
- GPS Performance
- Receiver WAAS Enabled® GPS receiver
- Acquisition Times
- Reacquisition: Less than 2 seconds
- Hot: Approx. 1 second (all data known)
- Warm: Approx. 38 seconds (initial position, time, and almanac known; ephemeris unknown)
- Cold: Approx. 45 seconds
- Update Rate GPS 18x PC: 1 record per second
- Accuracy GPS Standard Positioning Service (SPS)
- Position: <15 meters, 95% typical
- Velocity:
- WAAS
- Position: <3 meters, 95% typical
- Velocity: 0.1 knot RMS steady state
- Measurement Pulse Output Time: ±1 microsecond at rising edge of the pulse
- Dynamics: 999 knots velocity (only limited at altitude greater than 60,000 feet), 2g dynamics
LI-8150 Multiplexer
- Dimensions: 40.6 cm L x 57.2 cm W x 21.1 cm H (16" x 22.5" x 8.3")
- Weatherproof Rating: Tested to IEC IP55 standard
- Weight:
- 8 port version: 9.4 kg (20.7 lb)
- 16 port version: 11.2 kg (24.8 lb)
- Operating Range:
- Temperature: -20 to 45 °C
- Humidity: 0 to 95% RH, non-condensing
- Coverage Area:
- Max. radius from LI-8150 to chambers: 15.0 m (49.2 ft.)
- Max. diameter of measurement circle: 30.0 m (98.4 ft.)
- Flow:
- Flow rate to/from chambers: ~3.0 lpm (non-adjustable)
- Flow rate between LI-8100A and LI-8150: ~2.0 lpm
- LI-8150 Pump Type: Diaphragm
- Display:
- Four LED Indicators: Power, Check Error Log, Manual Chamber Activation Indicator, Active Chamber Error
- Five 7-segment LED Displays: Active Chamber, Active Valve, three voltage channel indicators
- Power Requirements:
- 10.5-14.5 VDC (120 VAC and 240 VAC with optional power supply)
- Power supplied through the LI-8150; LI-8150 powers the LI-8100 when connected
See table below for total system power requirements
| LI-8100 + LI-8150 + (n) Chambers | Sampling: No Chamber Movement | Sampling: Two chambers move at one time | Warm-up: Up to four chambers move at one time | |||
|---|---|---|---|---|---|---|
| (n) | Amps @ 12.5VDC | Watts | Amps @ 12.5VDC* | Watts | Amps @ 12.5 VDC* | Watts |
| 1 | 1.0 | 12.5 | 3.0 | 37.5 | 3.0 | 37.5 |
| 2 | 2.0 | 25.0 | 3.8 | 47.5 | 3.8 | 47.5 |
| 4 | 2.1 | 26.3 | 3.8 | 47.5 | 4.8 | 60 |
| 8 | 2.1 | 26.3 | 3.8 | 47.5 | 4.8 | 60 |
| 16 | 2.3 | 28.8 | 3.8 | 47.5 | 4.8 | 60 |
8150-770 AC Power Supply
- Power Requirements: 115-120VAC or 230-240VAC, 50/60 Hz, 230W. Input voltage range is switch-selectable and must be configured before applying power. Fuses located inside box cover.
- Weatherproof Rating:Tested to IEC IP55 standard
- Output Voltage: 12VDC
- Operating Temperature Range:-20 to 50 °C (—4 to 122 °F)
- Environmental Operating Conditions: Tested to IP55 for dust and water ingress.
- Dimensions: 18.1 cm D x 28 cm L x 10.2 cm H (7.125" x 11" x 4")
- Weight: 3.1 kg (14.05 lbs.)
Accessories for the LI-8150
- Soil temperature thermistor:
- 6 foot cable accuracy: ± 1.0 °C from -20 to 50 °C
- Cable/hose extension assembly:
- Length: 15 m
- Connections:
- Electrical cables: Turck weatherproof connectors
- Air hoses: Quick-connect fittings
Chamber Sensor Interface
(For use with each 8100-101 long-term chamber in a multiplexed system)
- Dimensions: 10.2 cm L x 3.8 cm W x 6.4 cm H (4" x 1.5" x 2.5")
- Inputs: 3 general input channels (0-5 VDC)
- Power supply (external or from LI-8150): 3 general input channels (0-5 VDC)
- Constant or switched: 0-5 VDC
- Unregulated: 12 VDC (12-13.5 VDC typically)
- Connections: Weatherproof connectors
8100-102 Survey Chamber (10 cm)
- System Volume: 854.2 cm3
- Soil Area Exposed: 83.7 cm2 (13 in.2)
- Dimensions: 15.2 cm L x 15.2 cm W x 25.4 cm H (6" x 6 " x 10")
- Air temperature thermistor:
- Operating Range: -20 to 45 °C
- Accuracy: ± 0.5 °C over 0-70 °C
- Cable length: 1.01 m (40")
- Weight: 1.6 kg (3.5 lb.)
8100-103 Survey Chamber (20 cm)
- System Volume: 4843 cm3
- Soil Area Exposed: 317.8 cm2 (49.3 in.2)
- Dimensions: 28.7 cm L x 28.7 cm W x 29.2 cm H (11.3" x 11.3" x 11.5")
- Air temperature thermistor:
- Operating Range: -20 to 45 °C
- Accuracy: ± 0.5 °C over 0-70 °C
- Cable length: 1.01 m (40")
- Weight: 2.9 kg (6.4 lb.)
Long-Term Chamber — 8100-104
- Volume: 4076.1 cm3
- Soil Area Exposed: 317.8 cm2 (49.3 in2)
- Dimensions: 48.3 cm L x 38.1 cm W x 33.0 cm H (19" x 15" x 13")
- Weatherproof Rating: Tested to IEC IP55 standard
- Air temperature thermistor:
- Operating Range: -20 to 45 °C
- Accuracy: ± 0.5 °C over 0-70 °C
- Cable length: Purchased separately
- Weight: 5.9 kg (13 lb.)
Clear Long-Term Chamber — 8100-104C
- Volume: 4076.1 cm3
- Soil Area Exposed: 317.8 cm2 (49.3 in2)
- Dimensions: 48.3 cm L x 38.1 cm W x 33.0 cm H (19" x 15" x 13")
- Weatherproof Rating: Tested to IEC IP55 standard
- Air temperature thermistor:
- Operating Range: -20 to 45 °C
- Accuracy: ± 0.5 °C over 0-70 °C
- Cable length: Purchased separately
- Weight: 5.9 kg (13 lb.)