6
7
7. SPECTRAL SENSITIVITY CHARACTERISTIC
To the detector, the applied photo diode with filters makes the spectral sensitivity
characteristic almost meet C.I.E.(INTERNATIONAL COMMISSION ON ILLUMINATION) Photo
curve V (
λ
) as the following chart described.
Light meter with USB / English
Light meter with USB / English
8. MAINTENANCE
1. The white plastic disc on the top of the detector should be cleaned with a damp cloth
when necessary.
2. Do not store the instrument where temperature or humidity is excessively high.
3. The reference level, as marker on the face plate, is the tip of the photo detector globe.
4. The calibration interval for the photo detector will vary according to operational
conditions, but generally the sensitivity decreases in direct proportion to the product of
luminous intensity by the operational time. In order to maintain the basic accuracy of the
instrument, periodic calibration is recommended.
LOCATIONS
Lux
FC
OFFICE
Conference, Reception room
200~750
18~70
Clerical work
700~1,500
65~140
Typing drafting
1,000~2,000
93~186
FACTORY
Visual work at production line
300~750
28~70
Inspection work
750~1,500
70~140
Electronic parts assembly line
1,500~3,000
140~279
Packing work, Entrance passage
150~300
14~28
HOTEL
Public room, Cloakroom
100~200
9~18
Reception
200~500
18~47
Cashier
750~1,000
70~93
STORE
Indoors Stairs Corridor
150~200
14~18
Show window, Packing table
750~1,500
70~140
Forefront of show window
1,500~3,000
140~279
HOSPITAL
Sickroom, Warehouse
100~200
9~18
Medical Examination Room
300~750
28~70
Operating room, emergency treatment
750~1,500
70~140
SCHOOL
Auditorium, Indoor Gymnasium
100~300
9~28
Class room
200~750
18~70
Laboratory, Library, Drafting, room
500~1,500
47~140
RECOMMENDED ILLUMINATION
1FC=10.76Lux
Connecting to pc
System requirements:
Windows 98, Windows 2000, Windows XP, Windows vista, Windows 7, Windows10
Minimum hardware requirements Pc or notebook, 90MHz Pentium of faster, 32Mb Ram, At
least 5Mb free hard disk space screen resolution 800×600.