Chauvin Arnoux C.A 811 Notice De Fonctionnement page 9

‘ 3-way switch:
- OFF : Switches the instrument off
- lux : Lighting measurement unit
- fc : Anglo-Saxon lighting measurement unit
(footcandles)
3.1 Procedure
1. Place the sensor flat on the surface where you wish to
measure the lighting. Move away from the measurement area
to avoid influencing the measurement (possibility of shade).
2. To switch the instrument on: select one of the 2 measurement
units with , the measurement appears on the display; wait
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until the displayed value is stabilised and, with
the appropriate measurement range.
3. Configure the instrument according to the type of
measurement to be taken using special function keys
(see § 3.2).
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4. Record the measured value once the display has stabilized.
The instrument is switched off by returning the cursor of
the OFF position.
Note: If the lighting to be measured is not within the
measurement range, the instrument will display OL; in this case,
press briefly on a few times to choose the appropriate
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measurement range.
3.2 Special functions
See § 2. Description
HOLD: when you press on this key, the instrument freezes on
the last value measured, this function is deactivated
when the instrument is switched off
MAX: the instrument (C.A 811) displays the maximum value
measured; this function is useful when the lighting varies,
it is deactivated when the instrument is switched off or
the key is pressed again.
PEAK: the instrument (C.A 813) displays the peak value
measured; this function is useful when the lighting varies
very rapidly, it is deactivated when the instrument is
switched off or the key is pressed again.
3. USE
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or
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to
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