CID - Model CI-710s - Miniature Leaf Spectrometer
From Leaf Spectroscopy
Powerful, Handheld Leaf Spectroscopy
Equipped with a powerful new spectrometer, SpectraVue provides the cutting- edge analytical range needed by professionals in the field.
Easily perform on-board data management & analysis with the full color, 7” IPS touchscreen display.
Get real-time insight into your data with SpectraVue’s full suite of spectral analysis software & 40+ built-in indices
Track measurement locations using built-in GPS tagging for consistent, traceable data collection over time.
SpectraVue’s ergonomic design allows for easy capture of leaf spectral data in any location.
Collect varied spectral data instantly by measuring absorbance, transmittance & reflectance, all in a single scan.
Theory of Operation
Three spectroscopic measurements can be performed by SPECTRAVUE:
Transmittance (T) is the fraction of the incident light passing through a sample, such as a leaf. When the intensity of the incident light is Io, and the intensity of light passing through the sample is It, the transmittance, T, is then expressed as T = It / Io. The CI-710s software suite can automatically calculate and plot the transmission spectrum with the reference spectrum (the intensity profile of the light source) stored.
Absorbance (A) is related to the transmittance as A = – log T = -log(It / Io). Absorbance is commonly denoted in optical density (OD) as it is linearly proportional to the amount of light absorbing sample in the light path length (Beer-Lambert law). For example, in a standard 1-cm cuvette, a sample with an OD of 2 is twice as concentrated as a sample with an OD of 1. But note that the intensity of light transmitted from a sample with an OD of 2 is only 1/10 of that from a sample with an OD of 1. Transmission and absorption spectrum measurements are the most common applications of spectrometers. The spectrum can be used for the quantification of chemical concentrations, color analysis, the study of photochemical reactions such as photosynthesis, and the quantification of physical or optical properties such as film thickness, index of refraction, and extinction coefficient.
Reflectivity (R) is the fraction of incident light that is reflected from a sample. Depending on the purposes of the study, reflectivity can be measured for reflection at a specific angle from the sample, or the entire reflected hemisphere. The leaf probe attachment of CI-710s is not designed to measure the directional reflectivity. Nonetheless, it can be used to measure the absorption spectrum of surface substance of reflective or opaque samples.
Specifications
- Dimension: 220 mm x 150 mm x 30 mm
- Weight: 952 g
- Operating Environment: -30° to 70° C storage, -10° to 50° C Operation,
- 0% – 90% noncondensing humidity
- Minimum Leaf Size: 20 mm x 20 mm
- Display: 7” 1024 x 600 IPS Display
- Languages: English, Spanish
- Measure modes: Reflectance, Transmittance and Absorbance
Detector Specifications
Detector: CMOS Linear Array
Wavelength Range: 360 – 1100 nm
Pixels: 2048 pixels
Pixel Size: 14 μm x 200 μm
Pixel Well Depth: 100,000 electrons
Signal-To-Noise Ratio: 330:1 (at full signal)
A/D Resolution: 16 bit
Dark Noise: 16 counts
Corrected Linearity: >99.8%
Sensitivity: 337.500
Wavelength Data Increment: 0.55 – 0.7 nm
Spectroscopic
Grating: 300 lines/mm, Slit = 55 μm
Optical Resolution: 2.4 FWHM in nm
Integration Time: 30 μs – 60 seconds
Dynamic Range: 3300:1
Stray Light: 0.2 – 1.0%
Electronics
Power Supply: Two 18650 batteries and USB-C
Battery life: 3 – 4 hours
Trigger Modes: Automatic & Manual
Built-in Indices
Abbrev: Index
ARI1: Anthocyanin Reflectance Index 1
ARI2: Anthocyanin Reflectance Index 2
CRI1: Carotenoid Reflectance Index 1
CRI2: Carotenoid Reflectance Index 2
SIPI: Structure Intensive Pigmane Index
FRI: Flavonols Reflectance Index
CNDVI: Chlorophyll Normalized Difference
Vegetation Index
Ctr1: Carter Index 1
Ctr2: Carter Index 2
G: Greeness Index
GM1: Gitelson and Merzlyak Index 1
GM2: Gitelson and Merzlyak Index 2
Lic1: Lichtenthaler Index 1
Lic2: Lichtenthaler Index 2
MCARI1: Modified Chlorophyll Absorption Ratio Index 1
MCARI 2
Modified Chlorophyll Absorption Ratio Index 2
NDVI: Normalized Difference Vegetation Index
NPCI: Normalized Pigment Chlorophyll Index
NPQI: Normalized Phaeophytinization Index
Abbrev: Index
SRPI: Simple Ratio Pigment Index
TCARI: Transformed CAR Index
TVI: Triangular Vegetation Index
ZMI: Zarco-Tejada & Miller Index
MDATT: Modified DATT Index
CCI: Chlorophylll Content Index
IAD: Absorbance Difference Index
CPHLA: Chlorophyll A (ug/cm^3)
CPHLB: Chlorophyll B (ug/cm^3)
CPHLT: Chlorophyll Total (ug/cm^3)
SPAD: Soil-Plant Analysis Development
MRESRI: Modified Red Edge Simple Ratio Index
RENDVI: Red Edge Normalized Difference Vegetation Index
VREI1: Vogelmann Red Edge Index 1
VREI2: Vogelmann Red Edge Index 2
VREI3: Vogelmann Red Edge Index 3
PRI: Photochemical Reflection Index
PSRI: Plant Senescence Reflectance Index
WBI: Water Band Index
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