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5 Influencing variables of spectral sensitivity
As for the photo sensor: the photodiode with filters used almost reaches the C.I.E.
(International Commission on Illumination) standard of spectral sensitivity test
characteristics. The photo-optical curve V (
) is shown in the table below:
6 Steps to commissioning
1. on/off button: The on/off button is used to switch the light meter on/off.
2. selection of the Lux/FC scale: Press this key to select the desired light metering
unit.
The photo sensor cover must first be removed and the photo sensor is then held
against the light source in a horizontal position.
The nominal illuminance value can now be read off the LCD display.
5. measuring range exceeded: If the unit only shows a "1" on the display, the input
signal was too strong and a higher range must be selected.
6. data HOLD mode: The HOLD key is pressed to enter the HOLD mode. The
luxmeter stops all further measurements. If this key is pressed again, this command is
cancelled and the instrument returns to normal operation.
7. data PEAK mode: Press the PEAK key to select the peak mode. Once this selection
is made, all subsequent measurements are paused. If the PEAK key is pressed again,
the PEAK-HOLD mode is cancelled and the instrument returns to normal operation.
After all measurements have been completed, replace the protective cap of the photo
sensor and press the off button.
7 Check and replace batteries
As soon as an adequate power supply is not ensured, the symbol appears on the LCD
display
and a battery change with a 9V block battery is necessary.
2. switch off the unit to do this. The battery cover is pressed down and at the same
time pushed down in the direction of the arrow to open the battery compartment.
3. the battery is removed from the housing and replaced by a new 9V block battery
4. replace the battery cover.
8 Maintenance
SO-BA-e-2020
SO-BA-e-20205
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