Main functions
Ultra-light handheld design (including leaf chamber and battery 1.5Kg) facilitates field measurement of photosynthesis related parameters of plants
Two measurement methods can be selected: open circuit and closed circuit; the photosynthesis of single leaves and populations can be measured.
Cooperate with environmental control to control light, temperature, water and CO in the leaf chamber₂Conduct control and study the relationship between relevant environmental factors and photosynthetic and respiration
Synchronous measurement of photosynthetic and fluorescence parameters in natural environment
Measurement parameters: measure the net photosynthetic rate or respiration rate, transpiration rate, stomatal conductivity, intercellular CO of a single leaf or population₂Concentration and air CO in and out of the leaf chamber₂Concentration, relative humidity, air temperature, leaf temperature, photosynthetic effective radiation (PAR), etc.
The environmental control module can automatically or manually control the CO in the leaf chamber₂and H₂O concentration, light, temperature
With unique fast continuous photosynthetic measurement function (one set of data is measured in 1 second)
Measurement parameters
Direct measurement of PAR and CO₂, temperature, humidity, stable flow rate parameters, atmospheric pressure and other parameters
Net photosynthetic rate, transpiration rate, stomatal conductivity, intercellular CO₂concentration
Used in conjunction with fluorescent accessories to measure fluorescence parameters
Connecting with the soil respiratory chamber to measure soil respiration

Application areas
The handheld photosynthesis measurement system CI-340 is widely used in plant-related disciplines such as plant physiology, ecology, agronomy, forestry, and horticulture, and is particularly suitable for rapid measurement in harsh environments (such as forest canopy, mountain environment, etc.);Research fields of CO2 changes related to storage and processing fruits, seed breathing, microbial breathing, insect breathing lamp can also be used.

Main technical parameters
Host parameters
Host: Includes infrared CO₂Analyzers, humidity sensors, air pumps, electronic flowmeters, monitors and keyboards
Monitor: LCD 40×6 characters (320×64 pixels)
Data storage: 4MB of memory, storing about 1.6 million data
Data transfer: USB
Flow rate: 100-1000mL/min
Working temperature: 0~45℃
Working humidity: 5~95%RH (water vapor is not condensed)
Power supply: 7.2V4400mA lithium battery, can be used continuously for 4-6 hours
Weight: 1.5kg (including leaf chamber and lithium battery)
Volume: 44.0×5.5×5cm
co₂Sensor technical parameters
Analyzer: Low-power non-diffusion infrared analyzer
Chopping frequency: 1Hz
Response time: 1 second
Service life: 5000 hours
Measurement range: 0～2000ppm (standard), 0～3000ppm (optional)
Resolution: 0.1ppm
Repeatability: 0.1ppm (short term)
Accuracy: <2%
Analyzer chamber size: 100mm×10.5mm (diameter)
Humidity sensor technical parameters
Type: Wet sensitivity capacitor
Stability: Accurate and stable measurement
Measurement range: 0~2100%
Resolution: 0.1%
Accuracy: at 10%RH, the accuracy is ±2%; at 90% the accuracy is ±3.5%
PAR sensor technical parameters
Type: GaAsP photocell with Yuxuan correction filter
Measurement range: 0～2500μmol/m-2/s-1
Response spectrum: 400~700nm
Accuracy: ±5μmol/m-2/s-1 (within the full range)
Technical parameters of temperature sensor
Type: Thermocouple
Measuring range: -15~50℃
Accuracy: ±0.1℃
Leaf temperature sensor technical parameters
Type: Infrared contactless
Measuring range: -10~50℃
Accuracy: ±0.3℃

Purchase Guide
Basic configuration
Host, leaf chamber, PAR probe, infrared leaf thermometer, alkali lime tube, silicone tube, rechargeable lithium battery, battery charger, USB data cable, manual, portable instrument box

Optional accessories

	Chlorophyll fluorescent component Junior-PAM It can be configured with a 1.5mm micro optical fiber, connected to a CI-340 photosynthesis machine, and can synchronize fluorescence parameters and gas exchange indicators under natural light. Meterable light response curve and fast light curve Micro-optic fiber is suitable for photosynthesis research of ultra-small samples	Technical parameters Measurement parameters: Fo, Fm, Fv/Fm, Fm’, Fo’, ΔF/Fm’, qP, qL, qN, NPQ, Y(NPQ) and rETR, etc. Equipped with various light sources of measurement, actinization, saturation pulse light, far infrared Weight: 150 g Power supply: Powered by the data terminal
	Light intensity control module CI-301LA With manual and automatic control Control the intensity of light received by the leaves indoors Measure photosynthesis at different light intensities Measure the response curve of photosynthesis with light intensity	Technical parameters Type: Red and blue LED light source Red light peak: 660 nm at 25℃  10 nm Blue light peak: 470 nm at 25℃  10 nm Light intensity range: 0～2500 mol m-2yes-1 Irradiation area: 80 x 40 mm Dimensions: 64 x 100 x 160 mm
	co2/H2OSupply modulesCI-301AD With manual and automatic control Control the CO2 concentration and H2O concentration at different levels Measurement of photosynthesis at different CO2 concentrations and different H2O concentrations Measurement of the response curve of photosynthesis with CO2 concentration	Technical parameters co2Supply: CO2generator co2Range: 0~2000 ppm H2O Supply: Water vapor generator H2O range: 0～100% RH Size: 60 x 100 x 160 mm
	Temperature control module CI-510CS With manual and automatic control Different temperatures can be set to adjust the indoor air temperature of the leaf Measurement of the effect of different temperatures on plant photosynthesis Measure the response curve of photosynthesis with temperature change	Technical parameters Type: Thermal and electric cooler Range: Ambient temperature 25℃ Refrigeration head size: 55 x 43 x14 mm Dimensions: 64 x 100 x 160 mm
	Fluorescence control module CI-510CF Used in conjunction with CI-340 photosynthetic device It can measure fluorescence parameters under dark adaptation and light Synchronous measurement of photosynthetic-fluorescence parameters Relevant fluorescence parameters can be measured separately	Technical parameters Measured light: 0.25 m Saturated light: 3000 m Frequency: 8-80Hz Optical fiber: optical fiber Dimensions: 64 x 100 x 160 mm
	The above three accessories can be integrated together. As shown in the picture CI-301LA for light intensity control module CO2/H2O control module CI-301AD Temperature control module CI-510CS power supply	Technical parameters Battery Pack: CI-340BP Battery: 7.2V rechargeable lithium battery Battery weight: 215g Power supply time: 4-10h (depend on the module) CI-340BP size: 200×128×160mm

Leaf room type

Origin: United StatesCid

References

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