MX-ELEKTRONIK MINILUX User manual

Operating
InstructionsforMINILUX
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 ! !
Note: In the nost sensitive ränge (0,00Q....1-,999 lx), the
displ-ayed illuninance vafue can vary about sone digits, because
the photocurrent-anpl ifier works at his physical linit
(l- nlx = 2 pA !!)
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 L00. 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 JF- /n
-/{x
-MX-ELEKTRONIK
Please
visit my home-page
for moreinformationProf.-Dr.-Ing. Peter
Marx
AmKleinenWannsee
12J
D-14109Berlin
(Germany)
www.mx-electronic.com

*4-@ze no
. Potentiometerfor
Lux-calibration.
Pleasedonotrotate
Minilux Blockdiagraml l3v
,'w.3
'1
\Caution
!
I+
of

TestReport
RelativeSpedral Response
550 750
r/nm ür ) tr/nm S(r) lrÄis S(Ä) try'nrn
S(Ä
) lÄtum S(r)
-S€rialst {.Vtlarnbda)
0-0017i 375 0,ffif0
0-0016
| ,100 0.001?I ,+05 0-0015
0"$058 I 430 0.0083| 435 0_0119
0.0459 I ,160 0-0615| 465 0,ü795
0.t981
| 49n 0:451 I ,+95 03001
0.s897| 5?0 0"6657 I 52s 0,740,1
o.9s77
| 554
0-8
0.6
0.4
0950
850
650
350 450
Example
i./nm S(Ä)
Speetra(nm)
360 0.00t9
380
4ltl
444
470
500
530
560
590
624
650
680
710
74{J
7?A
800
830
860
890
9?0
950
0.0016
0.0019
0.0I71
0-1015
0.3645
0.8083
I_0000
0.768/.
0.3s88
0.1073
0.Q229
0-0036
0"0003
0.0ffi0
0.0000
0-0000
0.00s0
0.0000
0.0s00
0.0000
385
4t5
M5
{t3
50J
535
565
595
6?5
655
685
715
745
Tt5
805
835
865
89J
925
0_001?
0-0030
0_0240
4i273
a"$43
fi"8667
0-9885
4,7027
0_3014
t).0842
0_0166
0.0026
o0003
$,G000
0.0000
0.0000
0_0000
0.0000
t)-$000
365
395
425
455
4*5
515
545
575
605
635
665
695
725
755
785
815
845
875
905
935
0-s3?l
4.4237
0_t369
0.t13{x
0,0049
0.0006
s_0ffiü
0.00m
$.000s
s-0sü0
0-sü0s
0.G000
0,s00s
390 0.00t6
420 0.004t
450 0.0336
480 0.1587
510 0.51I0
540 0.918,*
574 0.9631
600 0.6312
630 0.24y2
660 0.0653
690 0-01?2
720 0.0020
7s0 0.00{r?
780 0.00{n
810 0.00ffi
840 0_000s
874 0.000s
900 0.0000
930 0.00s0
0.9284I 580 0.8830| 585
0-5616| 6t0 0_490E
| 615
0,2058
I 64S 0-t685I 645
0-0508
| 670 0.0392I 6?5
0-0091| ?ü0 0-m6?| ?0s
0.0014I 730 0.0008| 735
0.0{00 | 7ö0 0.00{p | 765
0.{m00| 790 0-000ü| ?95
0-0000| 820 0-0000
| 8?s
0.0000
| 8s0 s.0000I 8s5
0.0000
I 880 0.0000| 885
0.01000| 910 $.0000 I 915
4
/tt
t
t
\
\
t
t
T\
f1 < 6%
0.0000
| 940 0.0008| 94s

Cosine-Correction
ofSilicon-Photocell
a COSa E+ E=I{E+)+,(E-)}2
lfda)[ sin(za)
%fda)'Sin(2t)
%
00 1.000
50 0.996
100 0.985
150 0.967
200 0.940
250 0.906
300 0.866
350 0.819
4oo 0.766
450 0.707
500 0.643
5500.574
600 o.5oo
650 0.423
7oo 0.342
750 0.259
800 0.174
850 0.087
1.000 1.000
0.966 0.998
0.985 0.989
0.968 0.970
0.944 0.945
0.91I 0.911
0.872 0.872
0.825 0.823
0.772 0;168
0.714 0.708
0.650 a.644
0.582 0.576
0.507 0.503
0.429 0.46
0.349 0.346
0.274 0.264
0.179 0.177
0.097 0.094
0.000 0.000
0.174 0.017
0.342 0.068
0.500 0.100
0.643 0.322
0.766 0.460
0.866 0.606
0.940 0.564
0.985 0.493
1.000 0.600
0.985 0.591
0.940 0.846
0.866 0.087
0.766 0.919
0.643 1.157
0.500 1.950
0342 0.787
0.174 r.792
1.000
0.997
0.987
0.969
0.945
0.911
0.8'72
0.824
0.770
0.711
o.647
0.579
0.505
0.428
0.348
0.269
0.178
0.096
0.0
0.I
0.2
0.2
u_)
0.6
0.7
0.6
0.5
0.6
0.6
0.9
0.1
1.2
1.8
3.9
2.3
10.3
t5
T
0fr(a
). Sid2s):11.359
o/o
Äs =50= 0.0873
1501x:1800/n,
x:0.0873)
r':! fxrllsin(2e)aa - rt,3leo/o
x 0.0873
:9ss2-%
x 1o/o
o
IL Y
(t)
(t) :-1
YG=o\'cD
t

Fehlergrenzen
füreinzeltle
Merkmaleund Gesanrtfehbrgrenzen
lür Boleuchtungsstärk€me0getäle
der
Klassen
L,A, B und c
Merkmal Bezeichnung
nach
DIN5032leil6
Fehlergrenzen
fÜrMeßgeräte
derKlass€
.l^E>@c|
c
V(,llAnpassung lt 1,5
qo 3 o/o ,6 0/o 9qo
UV-Empriir
dlich
keit uo,2
t/o 1 o/o 2% 49o
IR-Empf
indlichkeit fO,2Vo 190 24o 4 olo
cos-getreue
Bewertung lz 1,5
%3 olo 69o
Bewertung
fürIi, lz,o 10 % 15 9o 20 olo
Bewertung lür ,j'z 5Vo 10% 15 qo
Bewertung
lÜ.
[zt' Iz,,t 5% 10 qo 15 qo
Linearltätslehler o,2% 1 olo 20h 5%
Fehler
desAnzeigegerätes o,210 3% 4,5olo 7
,5 olo
Ermüdung 0,1
9o 0,5
%1 olo 2 alo
Temperaturkoelf
izient .ro, (l25 O,l ololK O,2
o/olK l VolK 2 ololK
moduliertes
Licht 0,10/o o,20/o 0,50/o 19o
Abgleichfehler Itt 0,10/o 0,5 0,6 1qo 2 olo
Gesamttehler
?) 3 .Yo
3) 5%9 10 qo9 20 %.)'
untere
Grenzfrequenz 40 Hz 40 Hz 40 Hz 40 Hz
ober€
Grenzfrequenz '|
05 Hz l05 Hz 1oa Hz 103Hz
r)
r) Falls
mitGeräten
der
KIasseLbeinicht
senkrechtern
Lichtein
fall
g€m€ssen
wird,
gelten
die
Fehlergrenzen
derKlass€
A'
Beim
cesamtfehler
istdie
Unsicherheit
desbeim
Kalibrieren
verwendetsn
Normals
(nach
PrÜfschein)
eingeschlossen
(si€,iho
auch Kalibrlerbedingungl:n
nach DIN
5032leil 6).
3)
SummederWerte11,u,r,fu,!a,a'2K,ls,l7'Illzzgl
Kalibrierunslcherlreit
desNormals
.) Summ€derWertel1,u,r,[2,l3,la,a 1OK'l5,l7,l11zzg'
lGlibrierunslcherheit
des
Normals'