Sekonic ILLUMINOMETER User manual

Specifications

 Measuring Range of Illuminance:
 Low:      0 -1000 Lx (Red scale)
 Ordinary:  0-5000 Lx (Black scale)
 High:      0-50000 Lx (by using the Slide of x10 multiplier)
 Accuracy : ± 10% (tested by a standard parallel-light tungsten lamp of color
                          temperature 2854°K) without including the resolution for
                           the meter (the value deserves minimal scale 1/2)in this
                           accuracy.
Angle Allowance : 30'---Iess than -3% 60°---less than -10%
Correction of                                                 sight sensitivity
           0-1000 Lx (No correction-light source factor used
           0-5000 Lx (Correction used)
 Power Source : No battery used
Condition of Use : Temperature: 5 - 35° C Humidity: 45 -85
Accessories :                       Lumidisc for low measurement
           Lumidisc for ordinary measurement
             Slide ( x10 multiplier)
 Dimensions : 112X58X27mm         Weight : 135g
 Characteristics :    Compact, light weight, handy to carry, and most easy -to-use
                       swivel-head system



Name of
Parts





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How to operate the Illuminometer
 1. Getting ready for measurement
 All you do for preparation is just to insert the LUMIDISC into position. To insert  it,
 match the white dot (or the red dot for low measurement) on the lumidisc to the white
 dot on the swivel-head of the meter. Turn the lumidisc clockwise lightly to about 45°
 until it tightly fits.



 2. Ordinary measurement: 0--5000 Lx
 To measure the range of 0--5000 Lx, use the lumidisc for ordinary measurement (with
 a white dot at the outer ring of the disc and a green filter attached at the back).
 Insert it into position as mentioned in 1. "Getting ready". Then place the meter at the
 surface to be measured so that the lumidisc is parallel to the surface. Read the BLACK
 figure on the scale. The figure the pointer indicates is the correct lux to use.



3. Measurement of High range: 0 --50000 Lx
 To measure the range of 0--50000 Lx, use the lumidisc for ordinary measurement (see
 2. above). Insert  it into position in the same procedure as in 2. Then INSERT THE
 SLIDE (x10 multiplier) into the slit located at the top of the swivel-head. Measure in
 the same way as mentioned in 2. "Ordinary measurement". Read the BLACK figure the
 pointer indicates, then MULTIPLY the figure by 10 to get the correct lux.



4. Measurement of Low range: 0--1000 Lx
 To measure the range of 0-1000 Lx, use the lumidisc for low measurement (with a red
 dot at the outer ring of the disc and no filter at the back). Insert  it into position and
 measure in the same way as in 2. Read the RED figure on the scale. Then MULTIPLY
 the figure by the correction factor of each light source shown in the table below.





Correction factor                Example
Mercury arc lamp...............................1.1       In case the pointer indicates 600 Lx
Fluorescent lamp ...............................1.0       under mercury arc lamp, the correct
Incandescent light..............................1.0        lux is, 600 Lx X 1.1-=660 Lx
Day light..........................................0.8


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5. Swivel-Head
The swivel-head is one of the most advantageous features of this meter. Swivel the
head of the meter to the right or left when the measurement is difficult due to the
position of the surface to be measured.


6. Zero setting adjustment
When the light receptor  is completely covered by hand (a condition where no light
enters into the light receptor), the pointer should be at zero. If  it isn't, turn the zero
adjusting screw on the back until the pointer comes to the zero position.


 7. General Precautions
     1) Be  careful  not  to  give  any shadow  on  the  light  receptor  at  every
        measurement.
     2)  Position the meter (more exactly the surface of Lumidisc) in parallel to the
         surface to be measured.
     3)  Avoid to leave the meter for long hours in a place of high temperature and
         humidity.
     4)   Store it in the case and keep in a dry place when not in use.





SEKONIC CO., LTD.
7-24-14, Oizumigakuen-cho, Nerima-ku, Tokyo, Japan


                                                                                                Printed in Japan
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