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 analysers, 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 analysers, 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.
CI-340 Handheld Photosynthesis System Features
|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|
|Sensor:||Low power Non-Dispersive Infrared Gas Analyser. No sensitivity to motion, Stable analyser for accurate CO2 measurements|
|Sensors response time:||35 seconds|
|Source life:||5000 hours|
|Measuring Range:||0 to 2000 ppm (Standard) – 0 to 3000 ppm (Optional)|
|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|
|Sensor Type:||Humidity Sensitive Capacitor.
Stable Analyser for accurate H2O measurements
|Measuring Range:||0 to 100%|
|Accuracy:||±2% at 10% RH, ±3.5% at 95% RH|
|Response time:||<15 sec|
|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
|Measuring Range:||– 15 ~ 50°C|
Leaf Temperature Measurement
|Sensor Type:||Infrared Sensor|
|Measuring Range:||– 10 ~ 50°C|
Specifications are subject to change.
The CI-340 is a highly technologically advanced photosynthesis system. It contains a pump along with a mass airflow sensor. A built-in microprocessor regulates the airflow rate, which is set by the user. The measurement process begins with an air/gas sample passing a solid-state CO2 analyser. The output of the analyser is amplified, sampled by an analogue-to-digital (A-D) converter, and sent to the microprocessor. The processor averages these readings and corrects them for any non-linearity present in the analyser. A relative value of CO2 concentration is continually updated by the microprocessor. Each reading reflects sampling taken every second during a specified time period. This can be determined by setting the time interval. The rate at which samples are saved in memory is determined by the “sampling rate” or the time interval input at the beginning of each measurement session.