1. True historical heritage

30year，Passing on the torch from generation to generation!

30Year by year, truly achieving historical inheritance!

30Year, four generations of instruments, ten years to sharpen a sword, a scientific research sword worth choosing!

1992Year, first generationCIRASThe birth of the photosynthesis analyzer truly opened the era of differential determination of photosynthesis!

1999Year, second generationCIRASThe emergence of photosynthetic apparatus marks the beginning of the era of large screen intelligent machines, achieving simultaneous measurement of photosynthetic fluorescence data!

2012Year, Third GenerationCIRASThe emergence of the photosynthetic apparatus inherits the excellent lineage of the previous two generations, achieving a leap from light intensity research to light quality research. It adopts ergonomic design, is ultra lightweight and portable, and simplifies the operation steps,reflectPutting people first!

Today, 2022, the fourth generation CIRAS photosynthesis instrument has emerged, simulating sunlight and willThe control of environmental factors has reached a new level!

From black and white screens to true color large screens, from manual to automatic, from halogen lamps toLEDFrom photosynthesis to photosynthetic fluorescence, from light intensity to light quality, fromCIRAS-1arriveCIRAS-4We have been working hard and making progress!

2 Powerful Core Technologies

2.1 The Heart and Soul of Photosynthesis Instrument

The core component of any blade gas exchange system isCO₂/H₂Oinfraredgas analysisinstrument.CIRAS-4It is a true differential determination infrared analyzer with four independent non dispersive infrared gas analyzers（IRGA）Can ensure the accuracy ofCO₂andH₂OPerform accurate and reliable measurements and controls. For high-level research, this is a key requirement and the main advantage of open circuit pneumatic systems. In order to improve safety and reliability, the infrared analyzer is designed to be placed inside the host, with automatic temperature and pressure compensation, and can be used to measure the temperature and pressure under constantly changing environmental conditionsCO₂andH₂OPerform precise measurements.

2.2 Automatic zeroing technology

Return to factory calibration、The various costs of zeroing are extremely high,CIRAS-4Accurate and stable operation without the need to return to the factoryCO₂/H₂OCalibrate and zero.PP SystemsThe automatic zeroing technology developed by the company already exists35Over the years, this technology has ensured the stability and reliability of the instrument's zero point, and has been fully recognized in the industry. It allows for very short preheating times, quick adaptation to constantly changing environmental conditions, and excellent sustained operational stability. Automatic zeroing can also reduce the impact of standard gas sensitivity, infrared light source aging, detector sensitivity, and electronic device changes.

3 brand new environmental control capabilities

Environmental factors that affect plant growth: light, temperature, water, airpHValue, etc.

The environmental factors that affect photosynthetic rate that we often refer to are meteorological environmental factors: light intensity, temperature, humidity, andCO₂Concentration. Accurate determination of photosynthetic rate requires instruments to have precise control over light intensity (including light quality), temperature, humidity, and other factorsCO₂The ability of concentration.

3.1 Control of Light Intensity (Light Quality)

CIRAS-4ofLEDThe light source is composed of red, green, blue, and whiteLEDAnd far red lightLEDComposition, where the control range of far red light can reachPARThe intensity of light30%In addition to controlling the light intensity, users can also set different colors of light in any proportion according to experimental needs.

3.2 CO₂Control of concentration

CIRAS-4The carbon dioxide gas supply system can be set up through the host software in its basic configuration,achieveAuto-Control.PP SystemsAs early as1992Year by year（CIRAS-1）Be the first to use microCO₂Steel cylinder controlCO₂Our proprietary gas mixing technology andCO₂Regulators can provide accurate, stable, and continuousCO₂ Traffic. eachCO₂Steel cylinders can be used continuously for at least12Hour, ourCO₂The controller and cylinder sleeve do not require maintenance.

CO₂Measurement range:0-10000ppm（μmol/mol）

CO₂Control range:0-2000ppm（μmol/mol）

3.3 Temperature control

CIRAS-4Featuring excellent temperature control range and fast speed、Reliable temperature control module. The overall automatic temperature control of each leaf chamber is very accurate、stable. Equipped with a radiator and fanPeltierThe cooler is installed at the head of the blade chamber and can be precisely controlled over a wide temperature range.CIRAS-4The temperature of the blades, the temperature of the blade chamber, or the blade temperature can be controlled according to the environmental temperature through programming. Temperature control can also be turned off.

3.4 Humidity control

PP SystemsThe company has automatic controlH₂OThe method. The moisture control moduleCIRAS-4In the basic configuration. Desiccant is used for controlH₂O.CIRAS-4Based on the percentage of the environmentVPD(Saturated vapor pressure difference) or specificH₂OControl concentrationH₂O.

CIRAS-4Easy programming to set higher and lower than the environmentH₂OControl, the host can also be used separately for the environmentH₂OMeasurement.

5. Powerful software features/user-friendly interface/programmable

high-precisionCIRAS-4Portable photosynthesis measurement system, runs smoothly, responds quickly, and hasupperExcellent portability and lightning fast human-computer interaction speed will bring youcomfortThe user experience.

The advanced software interface is intuitive, friendly, customizable, and responsive. All operations are performed through a touch screen, making it easy to get started.

6 Fast A/Ci Curve

For many years, users have been using usdevelopThe mixed air system performs storage differential balancing（SDB）Greatly shortened without sacrificing accuracyA/CicurvilinearMeasure time.

Fully automatic and editable fastA/CiThe measurement program is built into the software, created based on the upward and downward gradients of carbon dioxide concentration, with a user-friendly interface and simple settings.

runCO₂The gradient program with gradually increasing concentration allows you to eliminate the dependence on apparent assimilation rateCO₂Stop increasing instead of waitingCO₂The concentration has reached the maximum value set for the current gradient，Each gradient saves a lot of time.

7 ultra lightweight and fast response

7.1 Size/Weight

The portability of the photosynthetic apparatus is very important, especially when it is located very far from the experimental site. Having a lightweight and small footprint system can reduce on-site interference, make it easier to access hard to reach places, and reduce fatigue.CIRAS-4The main console (including two lithium-ion battery packs) weighs only4.8Kilograms,Leaf chamberOnly heavy0.7Kilograms, on-site measurement has become a completely new research experience.

7.2 Plug and unplug battery pack

Advanced system power supply, combined with three powerful and efficient lithium battery packs,ensureContinuous operation of the system16Hours or longer. No need to interrupt battery replacementConduct long-term data measurement.

7.3 Low maintenance and operation costs

CIRAS-4The maintenance cost is very low! Don't worryCIRAS-4Daily service or maintenance of any electrical or mechanical components on the console, including the main control platform. Just maintain easy-to-use desiccants and filters, and regularly clean the inside of the blade chamber and gaskets.

8 Rich Expanded Application Functions

The plug and play optional probe enriches the functionality of the instrument.CIRAS-4All optional probes are lightweight and compact, and can be directly connected to the host for practical use. The instrument data is more abundant, and the application fields are more diversified.

8.1 Soil respiration chamber

popularSRC-2Soil respiration chamber is the preferred method for quickly and accurately measuring soil carbon dioxide emissions. The lightweight chamber is made of sturdyPVCMade with a handle that is easy to place on the soil surface. Stainless steel rings have good sealing properties on soil surfaces. The built-in temperature sensor measures the air temperature near the soil surface.

8.2 Group assimilation room

CPY-5The group assimilation chamber is very suitable for measuring low vegetation or fruitsCO₂Flux, the upper transparent reaction chamber is made of sturdy polycarbonate and includes an adjustablePARA sensor for photosynthetically active radiation and an air temperature sensor located near the soil surface. The bottom aluminum ring can be embedded in soil or a ring knife,ensureGood airtightness.

8.3 Insect Respiratory Chamber

Insect respiration chamber can be used to measure carbon dioxide respiration of small insects