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LI-6400XT
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LI-6400XT Specifications

For Specifications on the 6400-40 Leaf Chamber Fluorometer, click here.

CO₂ Analyzer

Type: Absolute, open path, non-dispersive infrared gas analyzer.
Range: 0-3000 µmol mol^-1.
Bandwidth: 10 Hz.
Signal Noise: Typically 0.3 µmol mol^-1 peak-to-peak at 350 µmol mol^-1 with 1 second signal averaging; 0.8 µmol mol ^-1 maximum. With 4 second signal averaging, signal noise is typically 0.2 µmol mol-1 peak-to-peak.
Accuracy: Maximum deviation: ± 5 µmol mol^-1 from 0 to 1500 µmol mol^-1 ± 10 µmol mol^-1 from 1500 to 3000 µmol mol^-1.
Sensor: Solid state. Minimal sensitivity to motion.
Orientation Sensitivity: ± 1 µmol mol^-1 at 350 µmol mol^-1 from any orientation.

H₂O Analyzer

Type: Absolute, open path, non-dispersive infrared gas analyzer.
Range: 0-75 mmol mol^-1, or 40°C dew point.
Bandwidth: 10 Hz.
Signal Noise: Typically 0.04 mmol mol^-1 peak-to-peak at 20 mmol mol-1 with 1 second signal averaging; 0.06 mmol mol-1 maximum. With 4 second signal averaging, signal noise is typically 0.03 mmol mol^-1 peak-to-peak.
Accuracy: Maximum deviation: ± 1.0 mmol mol ^-1 from 0-75 mmol mol^-1.

Temperature

Operating Temperature Range: 0°C to 50°C.
Optical Housing Block and Air Temperature:
Sensor Type: 3-wire thermistor.
Range: -10 to 50°C.
Accuracy: Maximum error < ± 0.5°C.
Typical Error: < ± 0.25°C.
Temperature Control: Leaf chamber can be heated or cooled ± 6°C from ambient.
Control Range: 0 to 50.0°C.
Set point Resolution: 0.2°C.
Leaf Temperature Thermocouple:
Type: E.
Range: ± 50°C of reference.
Reference: Optical housing block thermistor.
Accuracy: ± 10% of T difference between sample and reference junctions with amplifier zeroed; typically < 0.2°C.

Output

RS-232: Hardwired DTE.
Expansion Slot : Supports either Compact Flash or Ethernet card adapter.
Compact Flash Card: Industrial Grade (included)
Ethernet Card Adapter: Type 1 CF Ethernet card, 10/100 Mbps (included)

Air Flow

Flow rate: 0 to 700 µmol s^-1 with 6400-01 CO₂ injector and 150 to 1000 µmol s^-1 without CO₂ injector.

Pressure

Pressure Range: 65 to 110 kPa absolute.
Accuracy: ± 0.1% of full scale.
Resolution: 0.002 kPa.
Signal Noise (peak-to-peak): 0.002 kPa typical.

System Console

Processor: 400MHz Intel XScale
Memory: 128 MB RAM for operation; 64 MB flash memory for data storage.
Display: Adjustable contrast, backlit, 8 line x 40 character (240 x 64 dot) LCD graphic display.
Keyboard: Full ASCII keypad, sealed from dust and moisture with membrane overlay.
Power Requirement: 10.5 to 15 VDC; 4A maximum (current draw dependent upon system operation). < 10A momentary peak.

6400-01 CO₂ Injector

CO₂ Mixing Range: < 50 µmol mol^-1 to > 2000 µmol mol^-1.
Operating Temperature Range: 0-50°C.
CO₂ Source Assembly:
Type: 12g pure liquid CO₂ cylinder.
Lifetime: 8 hours after activation regardless of use.
CO₂ Tank Connector Block:
Minimum Pressure: 1250 kPa (180 psig).
Maximum Pressure: 1500 kPa (220 psig).
Usage Rate: constant at ~10 sccm.

Light Measurement

PAR Internal and External Chamber Sensors:
Range: 0 to > 3000 µmol mol^-1.
Resolution: < 1 µmol mol^-1.
Calibration Accuracy: ± 5% of reading, traceable to NIST.

6400-02B LED Light Source

Output Range: 0 to 2000 µmol m^-2 s-1 at 30°C.
Minimum Fraction Blue: 5% (photon basis).
Typical Fraction Blue: 100 µmol m^-2 s^-1, 13%, 1000 µmol m^-2s^-1, 10%, 2000 µmol m^-2 s^-1, 7%.
Red Peak Wavelength: 665 nm ±10 nm at 25°C.
Blue Peak Wavelength: 470 nm ±10 nm at 25°C.
Power Consumption at 2000 µmol m^-2 s^-1: 8W.
Operating Temperature Range: 0-50°C.
Size: 5.2H x 5.6W x 7.3D cm (2.0 x 2.2 x 2.9 in.).
Weight: 0.2 kg (0.44 lb.).