Gather data faster in the field or lab
Durable and self-contained, the CI-202 Portable Laser Leaf Area Meter measures virtually any type of leaf, needle, or seed.
Plant physiology
Analyzing precise leaf area measurements to track and relate changes in shape characteristics to physiological function.Forestry & environmental applications
Taking measurements non-destructively, the CI-202 allows forestry and climate researchers to collect essential data without disturbing the environments they study.Crop research & agronomy
Agronomists optimize crop production using leaf area measurements to track crop health in response to environmental and nutrition changes.
Exploring the Boreal Forest: How The Ridges Sanctuary Uses the CI-110 Plant Canopy Imager for Critical Ecological Research
In the heart of Door County, Wisconsin, The Ridges Sanctuary stands as a vital steward of one of the most biodiverse regions in the Midwest. This sanctuary, the first and oldest private land trust in Wisconsin, has been preserving its land since 1937. Under its care are 1,700 acres of boreal forest, a unique paleo… Continue reading…
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The CI-710s Leaf Spectrometer: A Researcher’s Perspective
In a recent discussion with Scott Trimble, Vice President of Marketing for Felix Instruments, researchers Saroj Burlakoti and Anju Chaudhary from Utah State University shared their experiences using the CI-710s Leaf Spectrometer. The conversation highlighted the instrument’s critical role in their research, focusing on ornamental plants, water conservation, and fertilizer reduction. This article summarizes the… Continue reading…
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Comparing the Usability Between CID Bio-Science’s CI-600 Root Imager and an Inexpensive Endoscope
In the evolving field of agriculture, our tools can significantly influence the outcomes of our research and farming practices. Recently, a comparative study was undertaken to analyze the usability of the CID Bio-Science’s CI-600 Root Imager against a more budget-friendly option, the Depstech ds450 endoscope. Here, we delve into the findings presented in a poster… Continue reading…
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Challenges of Cold Stress in Rice: the Impact of Technology
A team of dedicated scientists led by Árpád Székely, Tímea Szalóki, Mihály Jancsó, János Pauk, and Csaba Lantos set out to understand the effects of cold stress on rice seedlings. The challenge was significant. Cold stress is a major factor affecting the growth and productivity of rice, a staple food for more than half of… Continue reading…
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Teaching with plant science tools
Kim Collins and her team at Northport High School have been utilizing the CI-710s SpectraVue Leaf Spectrometer to lend a modern, data-driven approach to students’ research projects. In this interview, we dive into how this technology-forward curriculum is empowering the next generation of plant science researchers and explore two unique student-led projects using Spectravue.
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Exploring root growth and development in HLB-affected citrus trees
Fifteen years of citrus greening disease (HLB) has had a devastating effect on Florida’s citrus industry, but the work of Dr. Lorenzo Rossi and his team is aiming to turn that around and making great strides using the CI-602 Narrow Gauge Root Imager.
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Bringing new crops to light by looking below ground
The CI-600 In-Situ Root Imager allows Dr. Shinsuke Agehara and his team at University of Florida to develop a holistic understanding of established and emerging crops in Florida—from the ground, up.
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Peering into plant pigmentation
Using the CI-710s SpectraVue Leaf Spectrometer, Dr. Catherine Simpson and her research team at Texas Tech University are gaining a deeper understanding of the nutritional and physiological qualities of various edible flowers and leafy vegetables over time.
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Data-driven assessment of plant response
Using the CI-340 as an integral part of their robust testing platform, Stephanie Wedryk and her team at Rx Green Technologies are able to develop groundbreaking cultivations solutions for the commercial cannabis industry.
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Modeling ecosystem functioning with precise plant data
In conjunction with LECA, PhyloAlps Project and Swiss Federal Research Institute, Amélie Saillard and her team use the CI-202 Portable Laser Leaf Area Meter to measure functional traits throughout the Alps, gathering vital information on each of the nearly 3500 alpine vegetal species.
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Designing complex orchard systems with user-focused technology
As a Senior Agronomy Scientist at Mars inc., Rany Agustina Susanti and her team extensively used the CI-110 Plant Canopy Imager in their work to improve efficiency of high productivity cacao farms using orchard intensive cropping systems.
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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.
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.
More than 670+ published
research papers
using leaf area measurement
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.
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How does the Portable Laser Leaf Area Meter work?
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- 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.
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Is the CI-202 waterproof?
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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.
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Does this product come with a warranty?
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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.
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What different types of researchers use the Portable Laser Leaf Area Meter?
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Plant physiology, forestry, environmental, and crop researchers all benefit enormously from the metrics that the Portable Laser Leaf Area Meter provides.
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What are the acceptable operating temperatures of this product?
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The CI-202 can be reliably operated in temperatures from 0 to 50° C. For temperatures outside this range, please consult with our application science team.
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 | 127 mm/second |
| Battery | 7.2 volt rechargeable NiMH |
| Battery Capacity | 200-250 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
Durable and field-ready
Store more than 8000 data points on the device and export for further statistical analysis.
