Multi functional plant measuring instrument

1、 Instrument Introduction

Multi functional plant measuring instrumentCombining various functions such as handheld fluorescence meter, chlorophyll meter, and spectrometer, it is a cost-effective, field portable plant multi parameter measuring instrument that can bring laboratory measurement quality to field measurements. It can measure photosynthetic phenotype, identify biotic or abiotic stress of plants or algae, and can be autonomously calibrated through CaliQ. It is easy to operate and can be operated through a smartphone app. The data can even be transmitted in real-time to a cloud platform for analysis and operation.

2、 Featured advantages

l 5500mABuilt in battery, can be used normally for a whole day

l Fast measurement, a typical measurement only requires16second

l The exterior design conforms to ergonomics and can be held with both hands

l Measurement of leaves or algae without gaps

l All measurement results automatically add time and location information

l Measurable blade angle and blade orientation

l passAPPWaiting for software to automatically update instrument firmware

l Optimize power management and reduce overall energy consumption

l Data can be stored and uploaded to the cloud after networking. It can be easily viewed and analyzed in a browser and can be usedRorPythonAdvanced Analysis Library in China

l Flexible and open-source, capable of creating customized operational processes for oneself

l CaliQCan calibrate multiple unitsMultispecQEnsure feasibility comparison between multiple instruments and allow users to customize calibration procedures

3、 Instrument composition

MultispecQMulti functional plant measuring instrument hostMicroUSBCableCaliQTheSPADCalibration filmUSBLine and operation manual

4、 Parameter indicators

u eight kindsLEDlight source--- 448nmThe530nmThe590nmThe655nmThe730nmThe810nmThe880nmThe950nm

u Spectral detector, covering400~700nmand700~1150nmTwo bands

u Accuracy of environmental temperature measurement+/-0.5℃

u Accuracy of non-contact blade temperature measurement+/-0.1℃

u Relative humidity measurement accuracy+/-3%

u Atmospheric pressure measurement accuracy+/-0.25%

u Measure the fluorescence parameters of plants and algae, including:FoTheFmTheFsTheFo’TheFm’TheFv/FmTheΦIITheΦNPQTheΦNOTheNPQTheqE,TheqITheqLTheqPTheLEF（rETR）TheRFdwait

u Measure the absorbance parameters of plants and algae, including:VH+ThegH+TheECStwait

u Measure and record non biological factors, including environmental temperature, relative humidity, air pressure, and altitude, as well as non-contact leaf temperature, leaf angle and orientation, and leaf thickness

u Measure the relative content of chlorophyllSPAD

u Reserve additional sensor interfaces（USB 3.0）

5、 Parameter Introduction

u ※ Non biological parameters: environmental temperature, relative humidity, atmospheric pressure, leaf temperaturePAR

u ※ Fluorescence parameters:ΦII, ΦNPQ, ΦNO, LEF, NPQt（ΦIt will also be writtenPhi）

u ※ Absorption parameter:SPAD(Relative chlorophyll content)ECSt, vH⁺, gH⁺PAR---Photosynthetically active radiation, unitμmol.s-1.m-2

u R/G/BRed, green, and blue light intensity

u Ambient HumidityRelative humidity, unit% Ambient Pressure---Atmospheric pressure,mbar Ambient Temp: Temperature,℃

u Contactless-temp: Leaf surface temperature,℃

u Leaf Temperature DifferentialThe value obtained by subtracting the ambient temperature from the blade temperature. Negative values indicate that the leaves are colder than the surrounding environment.

u ThicknessBlade thickness, unitμmHall effect sensor measurement

u angle_direction, compass_directionLocation, such asNW - North West

u campassDirection, compass, starting from north

u Leaf Angle: Blade angle,0~90degree

u RollThe angle between the instrument and the long leaf axis

u Pitch: Angle between instrument and short blade axis

u PAMChlorophyll fluorescence. Perform fluorescence quenching analysis using modulated fluorescence. The intensity of photochemical light is250μmol.s-1.m-2

u Maximum photon efficiency:textFv/textFm=FmFm-F0

u Photon yieldYieldThat is, it isPhiII=Fm’Fm’-Fs

u Linear electron transfer(Electron transfer rate)：textLEF---=PhiII*PAR*0.4Unrestricted energy dissipation:PhiNO =FmFs

u not light transform learn quench extinguish ：textNPQ =Fm’Fm-Fm’；PhiNPQ=1-phiII-phiNO；

u textNPQt=（F0’Fm’-14.88）-1

u Energy quenching:textqE=Fm’Fm’-Fm’

u qEVolmer coefficient（Stern-Volmer-coefficients）=Fm′Fm−Fm′′FmLight suppression quenching:textqI=Fm′′Fm−1

u Optical systemIIRedox state:1）puddlepattern---textqP=Fm′−F0′Fm′−Fs 2）Lakepattern

u textqL=qP×FsF0′

u ESC(Electronic Energy Conversion): Used to evaluateATPActive, usingDIRKThe law.

u ESCtElectron energy conversion amplitude:ECSt×(1−eT−1)

u gH+Proton conductivityT1

u vH+Steady state proton flux---gH+×ECSt

u SPADRelative chlorophyll content,650 and940nmAbsorption ratio.

Place of OriginUnited States