Kyoritsu Electrical Instruments KEW5204 User manual

INSTRUCTIONMANUAL

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DIGITALLIGHTMETER

LIGHTMETERSERIES

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KEW5204

1. SAFETY WARNINGS

This inst r uc ti on m anu al c o nt ain s war ni ng s and s af et y r ul es w hic h m ust b e
obser ved by the user to ens ure safe operat ion of the instr ument and to
retain it in safe condition.

● Read through and understand instructions contained in this manual
before starting using the instrument.

● Save and keep th e man ual h and y to en abl e qui ck r efe ren c e whe neve r
necessary.

The symbol  indicated on the instrument means that the user must refer
to related p a rts of the manu a l f or safe operat i on of the instr ument. Be sure
to carefully read the instructions following each  symbol in this manual.

 DANGER ： is reserved for conditions and actions that are likely to
 WARNING： is re served for c onditions and ac tions that ca n cause
 CAUTION ： is reserved for conditions and actions that can cause

● Do not install substitute parts or make any modification to the
instrument. Return the instrument to Kyoritsu or your distributor for
repair or re-calibration.

● Do not expos e the i nstr ume nt to th e dire ct sun , ext reme t empe ratu res
or dew fall.

●

This instrument isn't dust & water proofed. Keep away from dust and water.

● Be sure to set t he Func t io n Se le c to r Sw it ch t o th e " OFF " p os it io n after
use. When the instrument will not be used for a long period of time,
place it in storage after removing the batteries.

● Use a damp cl oth and deterge nt for cleanin g the instrum ent. Do not
use abrasives or solvents.

● The instrument should be calibrated once a year or so for the accurate
measurement



cause serious or fatal injury.
serious or fatal injury.
minor injury or instrument damage.

This symbol is marked where the user must refer to the
instruction manual so as not to cause personal injury or
instrument damage.

This inst ru ment s at isf i es t he ma rk in g req uir eme nt def i ne d in th e
WEEE Directive. This symbol indicates separate collection for
electrical and electronic equipment.

 WARNING

 WARNING

 CAUTION

DISTRIBUTOR

Kyoritsu reserves the rights to change specifications or designs described
in this manual without notice and without obligations.

5. Measurement

5-1 Zero adjust

Please perform zero adjustment before measurement.
Press 0 ADJ button wit h the Lens Protec t ing Cover atta ched to the Light
Sensing Probe.

"CAP-" will auto-appear on the LCD display. After "CAL-" appears, the
meter enters the automatic zero adjustment. When automatic zero
adjustment is completed, "CAL-" disappears and "0.0"appears. After

confirming the "0.0" display, remove the cap to start measuring.
IfER R1appears, check the cap to make sure it is on properly.
After t he measurement ha s been complete d, press the power bu tton
again to tur n off the powe r, and cover t he light-det ecting sur face with
the cap for protecting against stray light.

5-2 Measurement

Place the l ight sensing prob e parallel to the me asuring objec t and
measure it . At this time , please be c areful that yo ur own shadow d oes
not hit the sensing probe.
The light sensing probe can be fixed on the meter parallel or
perpendicular to th e LCD Disp lay. Or it may be detached from th e unit to
fit the measuring requirement.

REF. LEVEL

2. Features

●Wide Range 0.1〜199900 lux

●MAX/MIN function

●Automatic Zero Adjust function

●Large LCD Display with Backlight

⑩Battery cabinet cover

When battery capacity segment is less
than one, the user should replace the
battery. The battery cabinet can be
opened w ith a screw drive r and two AA
type batteries should be installed.

3. Name of Parts and Position/Operation

①Lens Protecting Cover

This is used to protect the
photoc ell f rom sc ratc hin g and
create complete dark
environment for the meter to
perform dark current
calibration.
Light Sensing Probe/Photocell

②
③LCD Display
④Power button

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Push this button to turn on
the meter. Please push the
button again to turn it off. The
unit will automatically turn
itself off after 3 0 mi nu tes i f n o
key operation. To disable the
automatic p ower off func tion,
turn the meter off, push and
keep holding button, then push power button to turn on.

⑤Backlight button

Push this bu tt on to tu rn on a nd of f th e LCD bac kli ght. T he bac kl ight w ill
be automatically off after 30 seconds to save battery power.

⑥HOLD button

The user may hold the present and keep it on the LCD display by
pressing the button.

⑦Max/Min button

Push this button to set the meter working under MAX /MIN mode. By
pushing t h i s b utton, the user may swap the LCD readi n g among curren t ,
maximu m and minim um reading . Push and ho ld this key for 3 s econds

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to exit MAX/MIN mode.

⑧Range selector button.

The user may u se this button to se lect the prefer red measuring o r
automatically selected by the meter. The available ranges are: AUTO
200, 2000, 20000, 200000 lx

⑨０ ADJ button （Please refer to Measurement）

4. Specifications

MODEL KEW 5204
Light detector Silicon photo diode
Measuring Range 0.0〜199,900 lx
Range 199.9/1,999/19,990/199,900 lx
Resolution 0.1 lx
Accuracy ±4%rdg±5dgt（23℃±2℃）

Angle deviation from cosine
characteristics

Temperature characteristics
Relative spectral sensitivity
characteristics

Response time
Auto power off 30 min.

Dimensions 169(L)x63(W)x37(D)mm
Weight 210g approx..
Power source R6(AA)(1.5V) x 2
Operation Temperature/
Humidity
Storage Temperature/
Humidity
Continuous measuring time Approx. 80 hours

Applicable Standards

Accessories

10° ±1.5%
30° ±3%
60° ±10%
80° ±30%
±5 % (at 23℃ reference and a range of 0 to 40℃)
Deviation from spectral luminous
efficiency:9% or less
Auto range:5s or less
Manual range:2s or less

0℃〜40℃,80%RH or less（without
condensation）

-10℃〜60℃,70%RH or less（without
condensation）

JIS C 1609-1:2006
IEC61326
Carrying case
Instruction Manual
R6(AA)(1.5V)×２

ADEQUATE LIGHT LEVELS FOR YOUR WORKING OR AT YOUR WORK AREAS.

LUXES (lx)

OFFICE

FACTORY

SCHOOL

HOSPITAL

STORE

RESTAURANT

THEATRE

CONCERT HALL

INN, HOTEL

BEAUTY SALON

BARBAR SHOP

3,000 2,000 1,500 1,000 750 500 300 200 150 100 75 50 30 20 15 10 7

Entrance hall (day-time)
Director room

Design room
Drawing room

Drawing room

Operating room

Emergency room

Important part of display,
Register, Packaging stand

Sample case Register Stair

Front desk
Counter, Office

Hair dressing, Hair dyeing
Hair set, Make-up

Most important
part of display

Extra fine visual work

Inquiry office, Dining
room
Night-duty room

Council room
Electronic computer room
Reception room
Guard station

Classroom, Faculty room,
Dining room, Gymnasium
Night-duty room

Clothing classroom,
Electronic computer room
Experimental laboratory
Reading room
Healthcare room

Consultation room
Nurse station
Pharmacist office
Pharmacist's office
General examination room
Physiological examination
room, Radioisotope room
Funeral chapel

X-ray room
Physiotherapy room,
Exercise machine room
Night-duty room
Endoscopy room, X-ray
fluoroscopy room

Lift lobby, Escalator

Negotiation room Stair

Cookroom
Dining table
Counter

Ticket office

Stall, Green room
Monitoring room

Carriage porch
Dining room

Cuisine
Guest room desk

Hair cut, Shaving
Dressing
Shampooing, Register

Stair

Library, Tearoom
Dressing room
Toilet, lavatory

Control room,
Electric room
Air conditioning machine
room, lavatory, Toilet

Auditorium, Assembly
room
Locker room
lavatory, Toilet

Nursery room
Waiting room
Visiting room
Passage for outpatients
Changing room, lavatory
Hospital charts room
Toilet

Reception room
lavatory, Toilet

Waiting room
Guest room
lavatory, Toilet

Spectator seats, Lobby
Electric room
Mechanical room
lavatory, Toilet

Banqueting hall, Salle
Lobby, lavatory, Toilet

Toilet inside the shop Passage

Warehouse, Lift, Passage

Stair

Entrance
Passage Path
Warehouse

Stair

Passage

Ward Emergency staircase

Passage, Resting room

Porch, Passage
Entrance

Resting room
Projection room
Passage

Stair
Theatre basement work
room

Stair Important parts of garden

Game room, Guest room,
Entrance, Passage,
Bathroom
Undressing room

Stair

Indoor emergency
staircase

Indoor emergency
staircase

Ophthalmic dark room

Monitoring room
(during performance)

(JIS Z9110-2010)

Projection room
(during performance)