LI-6400XT Specifications

CO2 Analyzer

Type: Absolute, open-path, non-dispersive infrared gas analyzer.
Range: 0-3100 µmol mol-1.
Bandwidth: 10 Hz.
Signal Noise: (Precision)
Within 0.2 μmol mol-1 RMS at 1 Hz with 4 second averaging at 400 μmol mol-1
1 second signal averaging at 350 µmol mol-1 RMS: 0.07 µmol mol-1 Peak to Peak: 0.3 µmol mol-1/0.8 µmol mol-1 maximum 4 second signal averaging RMS: 0.04 µmol mol-1 Peak to Peak: 0.2 µmol mol-1 1 second signal averaging at 350 µmol mol-1
RMS: 0.07 µmol mol-1
Peak to Peak: 0.3 µmol mol-1/0.8 µmol mol-1 maximum
4 second signal averaging
RMS: 0.04 µmol mol-1
Peak to Peak: 0.2 µmol mol-1
Accuracy: Maximum deviation: ± 5 µmol mol-1 from 0 to 1500 µmol mol-1 ± 10 µmol mol-1 from 1500 to 3100 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: (Precision)
1 second signal averaging at 20 mmol mol-1
RMS: 0.009 mmol mol-1
Peak to Peak: 0.04 mmol mol-1/0.06 mmol mol-1 maximum
4 second signal averaging RMS: 0.007 mmol mol-1
Peak to Peak: 0.03 mmol mol-1
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 Temperature 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 115 kPa absolute.
Accuracy: ± 0.1% of full scale.
Resolution: 0.002 kPa.
Signal Noise (peak-to-peak): 0.002 kPa typical.

System Console

Processor: 400 MHz 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; 4 A maximum (current draw dependent upon system operation). < 10 A 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
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-2 s-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: 8 W.
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.).

6400-40 Leaf Chamber Fluorometer

Measuring (Modulated) Light: Red LEDs, 630 nm, software controlled intensity, software selectable modulation frequencies of 0.25, 1, 10, and 20 kHz
Actinic Light: Blue and Red LEDs, 470 and 630 nm, respectively, independent software control of blue and red intensity, 0 to 200 µmol m-2 s -1 PAR for the blue LEDs, 0 to 3000 µmol m-2 s-1 PAR for the red LEDs
Saturation Light:Red LEDs, 630 nm, software controlled intensity, 0 to 7000 µmol m-2 s -1 PAR
Far-Red Light : Far-Red LED, 740 nm, software controlled intensity
Fluorescence Signal Temperature Dependence: < 1% drift with 10 °C change in temperature
User Interface: LI-6400XT console and remote Windows® interface
F Data Output (Analog): ±5V analog output for external data acquisition
Power Consumption:< 6W during saturation pulse
Leaf Area: 2.0 cm2
Operating Temperature Range: 0 - 50 °C
Dimensions: 6H x 6W x 8D cm
Weight: 0.4 kg

Specifications subject to change without notice.


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