Specifications

CO₂ Measurements

Calibration Range: 0 to 3000 µmol mol⁻¹

Accuracy: Within 1% of reading

Zero Drift (per °C):

±0.1 ppm typical

±0.3 ppm maximum

RMS Noise (typical @ 370 ppm CO₂):

@5 Hz: 0.08 ppm

@10 Hz: 0.11 ppm

@20 Hz: 0.16 ppm

Gain Drift (% of reading per °C @ 370 ppm):

±0.02% typical

±0.1% maximum

Direct Sensitivity to H₂O (mol CO₂ mol⁻¹ H₂O):

±2.00E−05 typical

±4.00E−05 maximum

H₂O Measurements

Calibration Range: 0 to 60 mmol mol⁻¹

Accuracy: Within 1% of reading

Zero Drift (per °C):

±0.03 mmol mol⁻¹ typical

±0.05 mmol mol⁻¹ maximum

RMS Noise (typical @ 10 mmol mol⁻¹ H₂O):

@5 Hz: 0.0034 mmol mol⁻¹

@10 Hz: 0.0047 mmol mol⁻¹

@20 Hz: 0.0067 mmol mol⁻¹

Gain Drift (% of reading per °C @ 20 mmol mol⁻¹):

±0.15% typical

±0.30% maximum

Direct Sensitivity to CO₂ (mol H₂O mol⁻¹ CO₂):

±0.02 typical

±0.05 maximum

General

Fundamental Gas Sampling Rate: 150 Hz

Bandwidth: 5, 10, or 20 Hz; software selectable

Type: Absolute, open-path, non-dispersive spectroscopy

Detector: Thermoelectrically cooled lead selenide

Path Length: 12.5 cm (4.92")

Air Temperature Thermistor: 10k ohm @ 25 °C

Range: −40 to 70 °C

Accuracy: ±0.25 °C from −20 to 70 °C

Resolution: 0.003 °C @ 25 °C

Pressure Sensor:

Measurement Range: 20 to 110 kPa

Sensor Accuracy: ±0.4 kPa from 50 to 110 kPa

Resolution: 0.006 kPa

Outputs: Ethernet

Operating Temperature Range: −25 to 50 °C (−40 to 50 °C verification on request)

Relative Humidity Range: 0 to 95% (non-condensing)

Weatherproof Rating: Tested to IEC IP65 standard

Power Consumption:

4 W steady state @ 25 °C

8 W maximum over operating temperature range

15 W maximum during warm-up (up to 4 minutes)

Input Voltage: 9 to 33 VDC; reverse voltage protected

Head:

Size: Diameter 6.5 cm, Length 30 cm.

Weight: 0.67 kg; 1.3 kg with mounting post.

Head Cable Length: 200 cm

DSI Box:

Size: 13.24 × 14.64 × 6.24 cm (H × W × D)

Weight: 0.93 kg

Gas analyzer head dimensions

DSI box dimensions

SmartFlux 3 System

Data Inputs: Three RS-232/422/485 serial ports

Network Communication: Ethernet (TCP/IP)

Data Storage: USB port for 16 GB industrial grade flash drive

Operating Temperature Range: -25 to 50 °C (-40 to 50 °C verification on request)

GPS Antenna Operating Temperature Range: -30 °C to 80 °C

Relative Humidity Range: 0 to 95% (non-condensing)

Input Voltage: 10 to 30 VDC

Power Consumption: 1.5 watts typical (3.5 watts maximum; excluding pass-through power)

Max Current Passed Through to the Anemometer: 2 A

Dimensions with DIN Clip: 149 x 100 x 37 mm (L×W×H)

Weight with GPS Antenna: 1.32 lb. (0.59 kg)

GPS Antenna Diameter: 61 mm (2.4 in.)

GPS Cable Length: 5 m

GPS Accuracy:

GPS Standard Positioning Service: <15 m; 95% typical

WAAS: <3 m; 95% typical

Specifications are subject to change without notice.