The CI-202 Portable Laser Area Meter uses advanced laser technology to allow
researchers a precise and convenient way to measure leaf area (or the areas
of leaf-like objects). The high-resolution laser scanner, data logger, and display
are all enclosed in a single, hand-held palette unit weighing approximately
2 Kg. Researchers can perform non-destructive measurements on leaves of living
plants by simply sliding the scanner over the leaf, enabling collection of data
from the same plant, or even the same leaf, throughout its life span. Precise
leaf area measurement of even tender leaves is possible by employing a transparent
sheath for protection.
To measure a leaf, simply lift the transparent film, place the leaf on the
board, and slide the scanner over the board. The CI-202 yields instant results
for leaf area, length, width, perimeter, ratio, and shape factor measurements.
Non-destructive measurement may be performed while the leaf is still attached
to the plant. Over 8,000 data readings can be stored or transferred to a computer.
It is the most popular leaf area meter; it is precise and accurate; makes
fast, non-destructive measurements; it is durable and lightweight; is ideal
for field use; stores over 8000 data points and can download data to computer;
and measures area, length, width, and perimeter and calculates shape factor
and aspect ratio
Theory of Operation: The CI-202 directly measures length, width, area,
and perimeter thru calculating ratio and shap factor after the measurement is
completed. Each time the control unit detects that the scanner has progressed
1 mm, the computer will check to see if the width reading is non-zero. If the
width measurement is non-zero, the computer takes the following actions:
- The length measurement is increased by 1 mm.
- The width measurement is added to the area accumulator.
- If the width measurement is greater than the currently stored maximum width,
the maximum width is updated.
- Weight: 1.8Kg
- Measuring Thickness: 15mm max
- Measuring Width: 150mm max
- Measuring Length: 36cm
- Scanner: 675nm Laser Diode
- Resolution: 0.025mm²
- Accuracy: ±1% for samples >10cm²
- Interface: USB 2.0
- Memory Size: 8,000 measurements
- Display: 16 characters × 2 lines LCD
- Scanning Speed: 127mm/second
- Battery: 7.2 volt rechargeable NiMH
- Battery Capacity: 15 hours
- Operating Temperature: 0 -50°C
The CI-202 includes: Palette style scan board, laser scanner with built-in
control unit, internal batteries, battery charger, communication software, one
additional transparent film, operating manual, hard-shell instrument carrying
To see a video, click on the following picture: