© PSI (Photon Systems Instruments), spol. s r. o.
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This chapter provides instructions on an initial set-up operation of the PolyPen RP400 device as well as detailed,
step-by-step description of a measurement procedure.
To switch the PolyPen ON, press the POWER BUTTON until the device logo shows up. Follow next steps to
perform the measurements. In case the device battery is not charged, connect the PolyPen with USB cable via
USB port to the PC and charge the batteries.
8.1
CALIBRATION
Calibration pf the PolyPen device MUST be done prior measurement after the turning on of the device. The
calibration of the white reflectance standard is an indispensable part of a correct calculation of reflectance
spectrum. The calibration scan must be performed always after the device switched ON or it should be
periodically repeated upon certain time period of the device operation. The calibration is not needed for
a simple measurement of spectra of external light sources.
For calibration of device use special reflectance standard
Spectralon®*
(Fig. 3). Calibration is required every time
the device is turned ON.
* Spectralon® is a registered trademark of Labsphere.
Please follow the instructions below for device calibration:
In the main window go to >
Calibrate >press OK
(Fig. 4).
Use the
Spectralon®
standard (Fig. 3) for white calibration. For dark calibration close the leaf clip only
(“standard” is on bottom part of the leafclip).
Close leaf clip.
Press OK and wait until the calibration step is completed.
Calibration is automatically stored into the device memory.
After the calibration step is performed, Main window icon
Calibrate
(Fig. 4) will change into
Get
reflectance
(Fig. 5). Get Reflectance – shows up after successful calibration, measures and stores
reflectance spectrum.
Spectralon®
standard is spectrally flat over UV-VIS-NIR spectrum and optically flat to +/- 1 % over the
photopic region of the spectrum.
The device is now ready to measure other samples.
Fig. 3 Reflectance standard Spectralon®
8
OPERATION INSTRUCTIONS
