MX-ELEKTRONIK MINILUX Operating Instructions

Operating Instructions for MINILUX
1
=
Si I icon-photosensor with
V(i)- and cosi"ne-correction, class
B in accordance to DIN 5032, part
7. Photosensitivity
H 2 nA/Ix
2
=
Trin-Potentioneter for
zero-adjust.
Put the black cap on the
photosensor and then
adjust the digital display rdith a snall-
screwdriver to zero in every
range.
The red
trin-potentioneter
is only for lux-calibration. Don,t
adjust it ! !
N o t e : I n t h e n o s t s e n s i t i v e
r ä n g e ( 0 , 0 0 Q . . . . 1 - , 9 9 9 l x ) ,
t h e
displ-ayed illuninance vafue can vary about sone digits, because
the
photocurrent-anpl
ifier
works
at
his
physical
linit
( l - n l x = 2 p A ! ! )
3 =
Rotary
switch
for
6 Lux-ranges
4 =
The battery-case
is on the backside.
5 =
Power on/ off
stritch
(on the
l-eft side of the aevicej
Luminance-l{easureuents
Put the luninance-tube
on the
photocell as deep as possible
and
hold
the tube
in the directlon in which
you $rant to neasure the
luninance
of a surface.
Read the lux-value from the display and
nultiply tf,.e l-ux-val-ue hrith the constant f actor L 00 . This result
is tbe luninance in cd7n,
Reflexion-ueaFurements
of a diffuge surface
1,. Measure the illuninance on the surface. 2. Measure the
lunrinance of the surface. 3. caldulate th€ ref l.exion-value
Idith
the following formula:
T, L/#,
p -
Datei: hol,099
J
F- /n
-/{x
-MX-ELEKTRONIK
Please visit my home-page for more informationProf.-Dr.-Ing. Peter Marx
Am Kleinen Wannsee 12J
D-14109 Berlin (Germany)
www.mx-electronic.com