Handheld Photosynthesis System (CI-340)
The CI-340 Handheld Photosynthesis System features a new design concept and compact solid-state structure. The entire system: the display, key pad, computer, data memory, CO2 / H2O gas analyzers, flow control system and battery are contained in a single, hand-held chassis. Everything required to measure photosynthesis, transpiration, stomatal conductance, PAR and internal CO2 is conveniently included in one easy to operate instrument. Because the chamber is connected directly to the CO2 / H2O differential gas analyzers, there is virtually no delay when measuring CO2 / H2O in the chamber. These features make the CI-340 not only the smallest, but the fastest and most accurate Handheld Photosynthesis System available for field applications.
- World’s lightest and most portable complete Photosynthesis System
- Measures photosynthesis, transpiration, stomatal conductance, and internal CO2 concentration in open or closed environments
- Control heat, light, water and gas exchange for precise data
- 9 custom chambers suiting any application, including conifer needles
- Soil Respiration Chamber available
- An entire photosynthesis system in one handheld case
- Lightweight and truly portable
- Stable analyzer for accurate CO2 and H2O measurements
- Open and closed system measurements
- 9 interchangeable chambers for different types of leaves
- Soil respiration chamber and plant canopy attachment available
- Modular attachments include light, temperature control, CO2 / H2O supply and chlorophyll fluorescence measurement
- Automatically controls light, temperature, and CO2 / H2O concentrations in the leaf chamber
- Infrared non-contact leaf temperature measurement
- Measures chlorophyll fluorescence and photosynthesis simultaneously
- Features
- Theory Of Operation
- Specifications
- How To Use It
- How It Works
- What's In The Box
Photosynthesis is the formation of carbohydrates from CO2
and a source of hydrogen (as water) in the chlorophyll-containing
tissues of plants exposed to light. The rate at which photosynthesis
occurs is determined by measuring the rate at which a known leaf
area assimilates the CO2 concentration in a given time.
See
the calculation.
It is known that transpiration is the primary determinant of leaf
energy balance and plant water status. The rate of transpiration
is determined by the accumulation of water vapor flux per one-sided
leaf area in a given time.
See
the calculation.
Stomatal conductance is the water loss of a leaf’s conductance
considered in parallel or series. It can be obtained by measuring
the transpiration and leaf surface temperature (°C), and applying
the calculation.
See the calculation.
The CI-340 is designed so that measurements can incorporate both
absolute and differential readings, simultaneously. This instrument
can also be configured to operate both open and closed systems.
See
the calculation.
CI-340 measures CO2 gas concentration in the Absolute
Mode from a single CO2 source. The CI-340 acquires absolute
measurement both from chamber environment and inlet to the instrument.
This concept adapts to both the open and closed system chamber environments
unlike any other Handheld Photosynthesis System available in the
market today.
See the calculation.
- Features
- Theory Of Operation
- Specifications
- How To Use It
- How It Works
- What's In The Box
| Main System | |
| Main Unit: | On board IRGA for CO2 / H2O Analysis, Flow Control, Display and Key Board, Leaf Chamber attachment facility and Battery. |
| Display: | LCD 40 x 6 characters or 320 x 60 pixel |
| Data Storage: | 4 MB Internal FLASH RAM |
| Data output: | USB or RS232C PC Link Cable |
| Flow Rate: | 100 ~ 1000 cm2 min-1 (1 lpm) |
| Power supply: | 7.2 VDC, 3.2 mAh for 5 hours continuous use, extended hours of use with additional batteries. AC Adapter / Battery Charger supplied. |
| Weight: | 1.5 Kg (3 Lbs) with Battery |
| Dimension: | 450 mm x 53 mm x 48 mm |
| CO2 Analyzer | |
| Sensor: | Low power Non-Dispersive Infrared
Gas Analyzer No sensitivity to motion, Stable analyzer for accurate CO2 measurements |
| Chopping frequency: | 1Hz |
| Sensors response time: | 35 seconds |
| Source life: | 5000 hours |
| Measuring Range: | 0 to 2000 ppm (Standard) - 0 to 3000 ppm (Optional) |
| Resolution: | 0.1 ppm |
| Repeatability: | ±0.1 ppm (short term) |
| Accuracy: | < ± 2% up to 3000 ppm |
| Sample cell: | 100 mm x 10.2 mm (3.94” L x 0.40” Dia) |
| Warm- up time: | Approximately 3 minutes |
| H2O Analyzer | |
| Sensor Type: | Humidity Sensitive Capacitor Stable Analyzer for accurate H2O measurements |
| Measuring Range: | 0 to 100% |
| Resolution: | 0.1% |
| Accuracy: | ±2% at 10% RH, ±3.5% at 95% RH |
| Response time: | <15 sec |
| PAR Measurement | |
| Sensor Type: | Filtered GaAsP - Photodiode |
| Measuring Range: | 0 ~ 2500 µmol m-2s-1 |
| Accuracy: | ±5 µmol m-2s-1 |
| Response time: | 400 ~ 700nm |
| Chamber Temperature Measurement | |
| Sensor Type: | Thermocouple |
| Measuring Range: | - 15 ~ 50oC |
| Accuracy: | ±0.1oC |
| Leaf Temperature Measurement | |
| Sensor Type: | Infrared Sensor |
| Measuring Range: | - 10 ~ 50oC |
| Accuracy: | ±0.3oC |
Specifications are subject to change.
- Features
- Theory Of Operation
- Specifications
- How To Use It
- How It Works
- What's In The Box
This self-contained system does the work of instruments many times its size. The CI-340 measures various aspects of photosynthetic activity within a completely controlled environment—while in the field. The CI-340 creates its own environment to study plant activity, employing varied control factors including CO2 levels, luminescence, and temperature all in solid-state instrument you can carry in one hand. To measure photosynthetic activity, simply secure a leaf within the CI-340 chamber and choose “ambient” or “closed” system measurement. In moments leaf function data is available as the CI-340 analyzes photosynthesis according to your research parameters.
Also available for the CI-340: Soil Respiration attachment for measuring changes in carbon levels in the soil.
The entire CI-340 Photosynthesis System - Display, keypad, computer, data memory, CO2/H2O gas analyzers, flow control system, and battery - is contained in a single hand-held case. It has everything you need to measure Photosynthesis, Transpiration, Stomatal Conductance, and internal CO2 concentration, as well as many other factors. Such as: Soil Respiration, Photosynthetic Active Radiation, Barometric Pressure, Air Temperature, and Leaf Temperature. Because the chamber is connected directly to the CO2/H2O differential gas analyzer, there is virtually no time delay when measuring CO2/H2O in the chamber. With CID's carbonate injection CO2/H2O generator module, the CI-340 can precisely control CO2 and H2O concentrations in the leaf chamber.
The CI-340 can also control temperature and light intensity with the optional temperature and light control modules. Furthermore, a chlorophyll fluorescence module can be attached to the CI-340 to simultaneously measure photosynthesis and chlorophyll fluorescence.
Available Modules:
- Temperature Control
- CO2
- Luminescence
- Chlorophyll Fluorescence
- Soil Respiration
- Features
- Theory Of Operation
- Specifications
- How To Use It
- How It Works
- What's In The Box
- Includes infrared gas analyzer
- PAR sensor
- Air temperature sensor
- Choice of one leaf chamber
- An infrared non-contact leaf temperature sensor
- Soda Lime tube
- Silica Gel tube
- Spare parts kit
- Rechargeable battery
- Battery charger
- USB communication cable
- Communication software
- Operation manual
- Hard-shell instrument carrying case
