QT-1060 open circuit vorticity related measurement system

Product Details

Eddy related systems, also known as vorticity covariance systems, are a micrometeorological measurement method. It uses the principle of vorticity and uses fast-response sensors to measure the exchange of matter and energy on the underlying surface of the atmosphere. The eddy covariance system can measure sensible heat flux, latent heat flux, momentum flux, frictional wind speed, and other material fluxes (such as CO2, etc.).

The eddy covariance system can be applied in many fields such as boundary layer theory research, atmospheric diffusion, energy budget research, water and other material budget research. Depending on the configuration of the instrument, the vortex covariance system can be divided into an open circuit vortex covariance system and a closed circuit vortex covariance system.

QT-1060 open circuit eddy related measurement system

The above pictures are for reference only and are subject to change without notice.

Technical Parameters:

LI-7500 A Open Circuit CO2 / H2O Analyzer

CO2 analyzer

H2O analyzer

Calibration range

0 ~ 3000 ppm

0 ~ 60 mmol / mol

Accuracy

＜ 1% of reading

Zero drift (° C-1)

typical

± 0.01 ppm ± 0.03 mmol / mol

maximum

± 0.03 ppm

± 0.05 mmol / mol

RMS noise

(370 ppm CO2 and 10 mmol / mol H2O)

5 Hz

0.08 ppm 0.0034 mmol / mol

10 Hz

0.11 ppm

0.0047 mmol / mol

20 Hz

0.16 ppm

0.0067 mmol / mol

At 370 ppm,

CO2 gain drift (℃ -1)

typical

± 0.02%

maximum

± 0.1%

At 20 mmol / mol,

H2O gain drift (℃ -1)

typical

± 0.15%

maximum

± 0.30%

Sensitivity to H2O

(Mol CO2 / mol H2O)

typical

± 0.00002

maximum

± 0.00004

CO2 sensitivity

(Mol H2O / mol CO2)

typical

± 0.02

maximum

± 0.05

Optical path length

12.5 cm

Operating temperature

-25 ~ 50 ℃

data storage

Pluggable industrial-grade USB flash memory device

Data communication

Ethernet, SDM, RS-232, 6 DACs

Enter

Ethernet, 4 analog input channels

power supply

10.5 ~ 30 V DC; power consumption 12W (including LI-7550)

size

head

6.5 cm in diameter and 30 cm in length

LI-7550

35 L × 30 W × 15 H cm (external)

weight

head

0.75 kg

LI-7550

4.4 kg

GILL R3-50 three-dimensional ultrasonic wind sensor

Ultrasound output frequency

50Hz

Output parameters

UVW, speed of sound

Wind speed measurement range

0 ~ 45m / s

Wind speed measurement resolution

0.01 m / s

Wind speed measurement accuracy

＜ ± 1% RMS

Wind direction measurement range

0 ~ 359 °

Wind direction measurement resolution

1 °

Wind direction measurement accuracy

＜ ± 1 °

Sound speed measurement range

300 ~ 370 m / s

Sound speed measurement resolution

0.01 m / s

Sound speed measurement accuracy

＜ ± 0.5% @ 20 ℃

Digital output communication

RS422 full duplex, 8 data bits, 1 stop bit, no parity

Baud rate

2400 ~ 115200

Output frequency

0.4 ~ 50Hz

Analog update frequency

0.4 ~ 50Hz

Number of analog outputs

7 (U, V, W, SOS, PRT, 2 analog inputs), requires PCIA unit

Analog output range

± 2.5V

Analog output resolution

14-bit

Analog output accuracy

＜ 0.1% FSR

Number of analog inputs

6 differential inputs requiring SIU

Analog input sampling

50Hz

Analog input range

± 5V

Analog input resolution

14-bit

Analog input accuracy

＜ 0.1% FSR

PRT input

Requires SIU and does not include PRT100

PRT input resolution

0.01 ℃

PRT input accuracy

＜ 0.01 ℃ ， 0 ~ 50 ℃

＜ 0.15 ℃ ， -40 ~ 60 ℃

power supply

Anemometer, 9 ~ 30 VDC

＜ 150mA @ 24 VDC or 300mA @ 12 VDC

Working temperature

-40 ~ 60 ℃

Protection level

IP65

Withstands rainfall intensity

300 mm / h

EMC

BS EN 50081-1: 1992

BS EN 50082-1: 1997

Housing material

Aluminum, carbon fiber

Adapt to the environment

Suitable for use in open marine environments

size

750㎜ × 240㎜

weight

1 kg

Additional observation sensors can be added as needed, please contact the channel company if necessary

Origin: United States