CI-202 Portable Laser Leaf Area Meter

Rapid, high-resolution leaf area measurements for plant research

Measure & communicate with ease

Precise laser scanner measurements, on-board data logger, and simple USB transfer make the CI-202 a must-have for researchers who want to work confidently and efficiently.


CI-202

Highly precise laser measurements

The handheld scan head is capable of measuring leaf area with a resolution of 0.01cm2.

Durable and field-ready

Highly durable, but lightweight aluminum alloy construction.

High-capacity measurement storage

Store up to 8000 measurements in-situ with the built-in data logger.

Ready to use

The CI-202 allows you to begin taking measurements right out of the box, no user calibration required.

6 measurements with one scan

Measures area, length, width, and perimeter & calculates shape factor and aspect ratio.

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1

Highly precise laser measurements

The handheld scan head is capable of measuring leaf area with a resolution of 0.01cm2.

2

Durable and field-ready

Highly durable, but lightweight aluminum alloy construction.

3

High-capacity measurement storage

Store up to 8000 measurements in-situ with the built-in data logger.

4

Ready to use

The CI-202 allows you to begin taking measurements right out of the box, no user calibration required.

5

6 measurements with one scan

Measures area, length, width, and perimeter & calculates shape factor and aspect ratio.

More than 670+ published
research papers

using leaf area measurement

Download the papers here

Request a live demonstration

High precision leaf area measurement in the field or lab

One scan,
6 measurements

The Leaf Area Meter measures leaf area, length, width, and perimeter &
calculates shape factor and aspect ratio.

No calibration
required

Ready to use right out of the box, the Leaf Area Meter allows you to begin
taking measurements immediately.

Easy data transfer &
charging

Transfer data and charge the device with a straightforward USB interface.

Accurate measurements of challenging leaf types

The built-in, transparent protective sheath allows for accurate measurements of
even curled leaves by carefully flattening them during the scanning process.

Painless to
pack

The handheld scan head and detachable pallet design allow for easy
transportation to any field location.

Instant measurement
verification

Verify measurements in real-time with the built-in, high-contrast LCD screen.

  • How does the Portable Laser Leaf Area Meter work?

    • The CI-202 is a laser scanner. While over the scan area, the laser light is reflected back to a photodiode which measures the light intensity. The light intensity is compared with the threshold voltage to generate a digital output that is ready to be processed by the micro controller unit.

  • What improvements were made with the latest product redesign?

  • Providing users with accurate measurements in an easy-to-use form factor are our primary goals. To achieve this objective, the Plant Canopy Imager went through a complete overhaul in 2018. Major improvements included the addition of an on-board touchscreen for easy measurement visualization and the combination of all device parts into one, easily hand-held device.

  • Is the CI-202 waterproof?

  • The CI-202 is not designed to be waterproof and should not be used underwater. The CI-202 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-202 during heavy rainfall.

  • 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.

  • What different types of researchers use the Portable Laser Leaf Area Meter?

  • Plant physiology, forestry, environmental, and crop researchers all benefit enormously from the metrics that the Portable Laser Leaf Area Meter provides.

Have additional questions?

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

Specifications

Measuring Thickness 1.5 cm maximum
Measuring Width 15 cm maximum
Measuring Length 36 cm
Scanner 670 nm laser
Resolution 0.01 cm2
Accuracy ±1% for samples >10 cm²
Interface USB 2.0
Memory Size 8,000 measurements
Dimensions 38.5L x 29W x 12.5H cm
Weight 1,500 g
Display 16 characters x 2 lines LCD
Scanning Speed 200 mm/second
Battery 7.2 volt rechargeable NiMH
Battery Capacity Over 250 scans per charge
Operating Temperature 0-50 °C

Theory of operation

The CI-202 measures length, width, area, and perimeter, and calculates ratio and shape factor once a measurement is completed.

Each time the control unit detects that the laser scanner has progressed 1 mm, the computer checks 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.

Aspect ratio is the ratio of the leaf length to its maximum width:

Shape factor is the ratio of the leaf area to the leaf perimeter, corrected so that the shape factor of a circle is equal to 1:

Get to know the CI-202 Portable Laser Leaf Area Meter

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).

Durable and field-ready

Store more than 8000 data points on the device and export for further statistical analysis.