PSI PolyPen RP400 Instruction Guide

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2 GENERAL DESCRIPTION
PolyPen RP400 & RP410 (in further text - PolyPen) is a portable, handheld spectro-radiometer. The PolyPen features a complete system
primarily designed for a measurement of spectral reflectance of leaves or other planar samples. The system is convenient for both, indoor
as well as field applications.
The PolyPen is a self-contained instrument powered by a Lithium-ion battery which is rechargeable via a PC and a USB cable. However,
it does not require a PC for operation. Reflectance spectra and calculated reflectance indices are instantly displayed on the PolyPen touch
screen and all stored in the device internal memory. Integrated USB communication allows data transfer to a PC at a later time. Measured
spectra and calculated indices are stored as full spectrum and individual values (respectively).
The PolyPen device integrates an internal light source (Xenon incandescent lamp) with radiation range 380 – 1050 nm. Two versions of
detectors are available for UV/VIS and NIR spectral regions.
The built-in GPS module and splash-proof case are ideal for field use of the PolyPen and make this device well suited for wide scope of
environmental, agricultural and ecological applications such as monitoring of artificial lighting used in horticulture industry or light source
testing.
PolyPen versions:
PolyPen RP 410 UVIS
Spectral response range: 380 to 790 nm.
PolyPen RP 410 NIR
Spectral response range: 640 to 1050 nm.
PolyPen measures:
Transmittance – calculated using the following formula
T= I/I
0
Where: I
0
is reference light intensity
I is measured light intensity
Absorbance – calculated using the following formula
A=log (I
0
/I)
Where: I
0
is reference light intensity
I is measured light intensity
The PolyPen device incorporates formulas of commonly used reflectance indices (e.g. NDVI, NDGI, PRI etc.) directly in its software and
displays values of the selected indices instantly. The PolyPen allow calculation of the following pre-defined vegetation indices:
Normalized Difference Vegetation Index (NDVI)▪
Reference: Rouse et al. (1974)
Equation: NDVI = (R
NIR
- R
RED
) / (R
NIR
+ R
RED
)
Simple Ratio Index (SR)▪
Reference: Jordan (1969); Rouse et al. (1974)
Equation: SR = R
NIR
/ R
RED
Modified Chlorophyll Absorption in Reflectance Index (MCARI1)
Reference: Haboudane et al. (2004)
Equation: MCARI1 = 1.2 * [2.5 * (R
790
- R
670
) - 1.3 * (R
790
- R
550
)]
Optimized Soil-Adjusted Vegetation Index (OSAVI)▪
Reference: Rondeaux et al. (1996) )
Equation: OSAVI = (1 + 0.16) * (R
790
- R
670
) / (R
790
- R
670
+ 0.16)
Greenness Index (G)
Equation: G = R
554
/ R
677
Modified Chlorophyll Absorption in Reflectance Index (MCARI)
Reference: Daughtry et al. (2000)
Equation: MCARI = [(R
700
- R
670
) - 0.2 * (R
700
- R
550
)] * (R
700
/ R
670
)
Transformed CAR Index (TCARI)
Reference: Haboudane et al. (2002)

PSI PolyPen RP400 Specifications

General

Brand	PSI
Model	PolyPen RP400
Category	Measuring Instruments
Language	English