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Beijing Ligotai Technology Co., Ltd

E-mail
marketing@ecotek.com.cn
Phone
18710042796
Address
22F, Block A, Chengming Building, No. 2 Xizhimen South Street, Xicheng District, Beijing

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LI-710 evapotranspiration measuring instrument

NegotiableUpdate on 12/21

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The LI-710 evapotranspiration meter adopts the principle of vorticity covariance measurement and can directly measure the evapotranspiration ET data of the sample plot.

Product Details

LI-710 蒸散测量仪

LI-710 evapotranspiration measuring instrumentBy using the principle of vorticity covariance measurement, the evapotranspiration ET data of the sample plot can be directly measured.

Due to the complexity of measurement methods, direct measurement of evapotranspiration ET has not been widely used. The indirect measurement method relies on estimates based on crop coefficients and reference/potential evapotranspiration ETo, which can lead to deviations in the quantification of evapotranspiration ET.

LI-710 evapotranspiration measuring instrumentIt can directly measure the actual evapotranspiration ET of the sample plot without the need for crop coefficients. It is suitable for any relatively flat artificial or natural ecosystem with a uniform underlying surface.

Main Features

Based on the principle of vorticity covariance flux measurement, the measurement results are reliable

● By using direct measurement instead of indirect estimation, the ET number has been increased

Accuracy of data

● The connection, operation, and maintenance are very simple

● Research grade data accuracy

Application field

● Precision irrigation management

● Regional water resources assessment/management

● Monitoring of ecosystem drought

● Ground validation of remote sensing data

● Quantitative analysis of ecological hydrological processes

● Meteorological data supplement

Research grade precision

LI-710、 Traditional Vorticity Covariance System and Penman MonteithCompare the estimated ET. The evapotranspiration ET measured by LI-710 is highly consistent with the measurement results of the traditional vorticity covariance system.

LI-710 蒸散测量仪

LI-710 applies the vorticity covariance method to measure wind speed and water vapor concentration in the vertical direction at a frequency of 10Hz, and provides processed ET data every 30 minutes.

LI-710 蒸散测量仪

instrument parameters

Working environment: 5-50 ℃, relative humidity 85%

Communication: SDI-12

Input voltage range: 8-33V

Power: ≤ 1.5W

Weight: 1.4Kg

Size: 58 × 17.5 × 7.6cm

Installation: 1 'pole, compatible with NuRail and other installation hardware.

measurement parameters

H2O mole fraction range: 0-60mmol/mol

Import flow rate: 0.3lpm (typical value)

System Requirements

Distance ultrasound: ≥ 2 meters

Installation height: ≥ 2 meters

waterproof rating

Tested according to IEC IP54 standard

output parameters

parameter	description	unit
ET	actual evapotranspiration	mm
LE	Latent heat flux	W/m2
H	Sensible heat flux	W/m2
VPD	Vapor pressure difference	KPa
Pa	atmospheric pressure	KPa
Ta	air temperature	℃
RH	Relative humidity of the environment	%
AH	Absolute humidity of the environment	g/m3
SVP	Saturated vapor pressure of the environment	KPa
Td	dew point	℃

Manufacturer and place of origin: United StatesLI-CORcompany