CI-340 Handheld Photosynthesis System

Portable gas exchange measurement for ecology, agronomy & horticulture

Endless measurement possibilities

With 10 available chamber options designed to accommodate any leaf size, including conifer needles and cacti, the CI-340 can be applied effectively in virtually any photosynthesis study.


CI-340

Lightweight, rugged construction

Designed for field studies, the Handheld Photosynthesis System’s portability and durability make it ideal for in situ research.

Infrared leaf temperature sensor

The non-contact temperature sensor allows for non-destructive measurement and ensures standardized measurement conditions.

Modular design

With 10 customized leaf chamber options and 4 control modules, the CI-340’s modular design means you only pay for the parts you need.

Open or closed system measurements

Capable of running open or closed system analysis depending on your study needs.

External battery pack

Achieve virtually unlimited battery life in the field with external, rechargeable 4400mAh batteries or use the AC adapter for continuous operation in a lab setting.

DSC_1454

1

Lightweight, rugged construction

Designed for field studies, the Handheld Photosynthesis System’s portability and durability make it ideal for in situ research.

2

Infrared leaf temperature sensor

The non-contact temperature sensor allows for non-destructive measurement and ensures standardized measurement conditions.

3

Modular design

With 10 customized leaf chamber options and 4 control modules, the CI-340’s modular design means you only pay for the parts you need.

4

Open or closed system measurements

Capable of running open or closed system analysis depending on your study needs.

5

External battery pack

Achieve virtually unlimited battery life in the field with external, rechargeable 4400mAh batteries or use the AC adapter for continuous operation in a lab setting.

More than 300+ published
research papers

on photosynthesis monitoring

Download the papers here

Request a live demonstration

Precise, in situ photosynthesis measurement

Measure multiple factors
simultaneously

Simultaneously measuring CO2 & H2O, light, leaf temperature, & chlorophyll fluorescence, the CI-340 can quickly do the work of multiple single-purpose devices.

Accommodate any
leaf

Only pay for the parts you need with 10 customized leaf chamber options for varying leaf, needle & cactus sizes.

Control your
experiment

Optional control modules allow adjustment of light intensity, H2O & CO2 concentrations, temperature & chlorophyll fluorescence measurement.

Designed for the
field

The Handheld Photosynthesis System’s lightweight, but rugged construction make it ideal for in situ research.

Virtually unlimited battery life

Quickly swap out external, rechargeable 4400mAh batteries for extended in- field use, or use the AC adapter for continuous operation in a lab setting.

Specially designed leaf temperature sensor

The infrared, non-contact temperature sensor allows for non-destructive measurement and ensures standardized measurement conditions.

  • Does this product come with a warranty?

  • All CID instruments come with a 12-month warranty from the point of sale. The warranty covers repairing and replacing defective parts of the instrument that were manufactured directly by CID Bio-Science. The warranty does not cover wear and tear, neglect, misuse, accident, or excessive deterioration. Further, repair and alteration by an unauthorized party voids the warranty. More information can be found in the operation manual of your instrument.

  • Is the CI-340 waterproof?

  • The CI-340 is not designed to be waterproof and should not be used underwater. The CI-340 is designed to be water-resistant. Use in light rain is fine, however, there are electronics that can be damaged from water entering the instrument, so it is not recommended to use the CI-340 during heavy rainfall.

  • What are the operating conditions of this product?

  • The operating conditions of the CI-340 are 0-45° Celsius and 0%-90% noncondensing humidity.

  • What different types of researchers use the Handheld Photosynthesis System?

  • Crop, forestry, environmental, plant, climate, hydrology, and soil researchers all benefit enormously from the metrics that the Handheld Photosynthesis System provides.

  • How much does the device weigh?

  • The Handheld Photosynthesis System weighs 1.5kg (3lb) with battery.

Have additional questions?

Click the link below to speak with one of our staff scientists about your specific application.

Specifications

Lens On board IRGA for CO2 Analysis, H2O Analysis with humidity sensor capacitor, Flow Control, Pump, Display and Key Board, Leaf Chamber attachment ports and Battery.
Display LCD 40 x 6 characters or 320 x 64 pixel
Data Storage 4 MB Internal FLASH RAM
Data Output USB
Flow Rate 100~1000 cm3/min
Operating Temperature 0-45 °C
Operating RH 0-90% non-condensing

Power Supply 7.2 VDC, 4400 mAh for 5 hours continuous use, extended hours of use with additional batteries. AC Adapter / Battery Charger supplied.
Imaging Probe and Arm Weight 1.5 kg
Weight 1.5 Kg (3 Lbs) with Battery
Dimensions 44 cm x 5.5 cm x 5 cm

CO2 Analyzer

Sensor Low power Non-Dispersive Infrared Gas Analyzer
Chopping Frequency 1 Hz
Sensors Response Time 35 seconds
Source Life 5,000 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 2000 ppm
Sample Cell 100 mm x 10.2 mm (3.94” L x 0.40” Dia)

H2O Analyzer

Sensor Type Humidity Sensitive Capacitor
Stability Stable Analyzer for accurate H20 measurements
Measuring Range 0 to 100%
Resolution 0.1%
Accuracy ±2% at 10% RH, ±3.5% at 95% RH

PAR Measurement

Sensor Type Filtered GaAsP-Photodiode
Measuring Range 0~2500 µmol m-2s-1
Accuracy ±5 µmol 0-2500 µmol/m2/sec

Chamber Temperature Measurement

Sensor Type Thermocouple
Display LCD 40×6 characters 320×64 pixel
Measuring Range -15~50°C
Accuracy ±0.1°C

Leaf Temperature Measurement

Sensor Type Infrared Sensor
Measuring Range -10 ~ 50°C

Accuracy ±0.3˚C

Theory of operation

Photosynthesis

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. Photosynthetic rate is determined by measuring CO2 before and after it enters the leaf chamber to calculate the rate of CO2 assimilation by a known leaf area. See the calculation.

Transpiration

Transpiration is the movement of water vapor from leaf tissue into the atmosphere. Transpiration rate is determined by measuring water vapor before and after it enters the leaf chamber to calculate the rate of water vapor flux per one-sided leaf area. See the calculation.

Stomatal Conductance

Stomatal conductance refers to the openness of the leaf stomata determines the rate of CO2 assimilation into the leaf and water vapor exits the leaf through the stomata. Stomatal conductance is calculated by measuring transpiration rate as a function of leaf temperature. See the calculation.

Open or Closed System

The CI-340 is easily operable as either an open and closed system. In open system measurement, the incoming gas is drawn from the ambient, or control-module altered, air and the exhaust returns to the external atmosphere. During closed system measurements, the air is recirculated from the exhaust back into the chamber. See the calculation.

Absolute and Differential Readings

The CI-340 is designed to measure both absolute and differential readings. In Absolute Mode, the CI-340 measures gas concentrations from a single source. For differential measurements, the concentration of gases from both the inlet of the chamber and the chamber exhaust are measured.

Glossary of Abbreviations

Get to know the CI-340 Handheld Photosynthesis System

The CI-340 Handheld Photosynthesis System is a portable, single-handed tool that measures photosynthesis, respiration, transpiration, stomatal conductance, PAR and internal CO­2. Direct chamber connection to the CO2/H2O gas analyzer reduces measurement delay and enables rapid measurement of gas exchange.

Accurate and portable gas exchange on the go

Compact and durable, this single-handed tool measures photosynthesis, respiration, transpiration, stomatal conductance, PAR and internal CO2, all in one easy to carry unit.