© PSI (Photon Systems Instruments), spol. s r. o.
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7.4 MULTIP LE M E ASUREME N T
In addition to a single measurement with each of the available protocols, it is possible to perform multiple
measurements of the same protocol over a period of time. The FluorPen may be setup to make multiple measurements
by selecting in the Settings > Multi, appropriate parameter/protocol (see Menu tree, page 28)
Multi type – choose your required parameter - Ft, QY, OJIP....
Multi interval – set the time interval between measurements
Multi repeats – set the number of repeated measurements
Use averaging – serves to confirm Repeat and Interval Options for each measurement within Multi Option – select YES or
NO.
• Prepare the sample as for a single measurement.
• Select in the menu: Measurement > Multi.
• Press SET to confirm and start the measurements.
• Values appear on display after each repeat of measurement and are automatically stored to the device
memory. If protocol (OJIP, NPQ, LC) was used, no data will be visible on the display. Data will need to be
download from the device to a PC first to visualize it (page 45).
Modes of Multiple measurement:
1. FluorPen is connected via USB to computer
The device performs preset number of repeated measurements and does not switch off between measurements.
Progress of the measurement is displayed in percentage on the computer.
2. FluorPen is not connected to the computer
The device measures continuously according to predefined protocol and interval. The multiple measurement is
interrupted only by manual switching „MENU“ of the device. The device turns off between measurements.
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