Perfect Prime 531 User manual

LIGHT METER
531
Instruction Manual

CONTENTS
P. 1
................................................................ 2
......................................................................... 3
....................................................... 4
......................................................................... 4
....................................................................... 5
...................................................................... 6
.............................................. 7 - 11
........................ 12
1. Safety Information
2. Introduction
3. Precautions On Handling
4. Maintenance
5. Specifications
6. Symbol Definition And Button Location
6.1 LCD Display
6.2 Name Of Parts & Position
7. Characteristics Of Sensor Spectrum Response

1. SAFETY INFORMATION
P. 2
Read the following safety information carefully before attempting to
operate or service the meter.
Use the meter only as specied in this manual ; otherwise, the protection
provided by the meter may be impaired.
ENVIRONMENT CONDITIONS:
•Altitude up to 2000 meters
•Relatively humidity 90% max.
•Operation Ambient 0 ~ 40°C
EXPLANATION OF SYMBOLS:
Comply with EMC.
When servicing, use only specied replacement parts.

Thank you for using our LED Light Meter. To ensure that you can get the
most from it, we recommend that you read and follow the manual
carefully before use. The Light Meter has been designed, manufactured,
and delivered under strict quality control criteria by a factory certied.
This meter has the following characteristic.
• Easy to use
• Automatic zero
• Automatic ranging
• MAX/MIN function
build in
• Large backlight LCD
display
2. INTRODUCTION
P. 3

Operating carefully, and do not drop the meter or hit it with a hard object.
Avoid using the meter in a dirty, dusty, or salt-air area or where there are
corrosive gases. If dirt or dust adhered to the surface of the detecting
light, will decrease accuracy of the measuring value to clean the surface
by wiping with a soft and dry cloth.
3. PRECAUTIONS ON HANDLING
4. MAINTENANCE
3. PRECAUTIONS ON HANDLINGE
4. MAINTENANCE
ATTENTION!
Repairs or servicing not covered in this manual should only be
performed by qualied personal.
CLEANING
Periodically wipe the case with a dry cloth. Do not use abrasives or
solvents on this instrument.
Note:
If it is not used for a long time, please store the meter in
chamber under 60%RH.
P. 4

5. SPECIFICATIONS
P. 5
Measuring range:
Resolution:
Accuracy:
Angle deviation from
cosine characteristics:
Temperature characteristics:
Response time:
Light detector:
Over range:
Power supply:
Power life:
Operation temperature:
Operation humidity
Storage Temperature:
Storage Humidity:
Dimension / Weight:
Weight:
Accessories:
0.0 to 199.9/1999/19990/199900 lx
0.00 to 19.99/199.9/1999/19990 fc
Automatic or manual selection of range
0.1 lx, 0.01 fc
±3% rdg ±5 dgts (Standard A light source)
8% other visible light source
10° ± 1% 30° ± 2%
60° ± 5% 80° ± 20%
±0.1% / °C(25°C)
0.5 sec
SI Photodiode
“-OL-” display
1.5V type AA battery x2
Approx. 80 hours
0°C ~ 40°C(32°F ~ 104°F)
0~80% RH
-10 to 50°C (14 to 122°F)
0 to 60% RH
169(L)×63(W)×37(H)mm (6.7”×2.5”×1.5”)
Approx. 210g
Battery, instruction manual, carrying case.

6. SYMBOL DEFINITION AND
BUTTON LOCATION
P. 6
6.1 LCD Display:
Minimum value
indicator
Maximum value
indicator
Value hold
indicator
Set light source
mode indicator
Illumination
value
Illumination
Unit
indicator
Range indicator
Autopower
o indicator
Battery
capacity
indicator
Light source
correction value
choice indicator

6. SYMBOL DEFINITION AND
BUTTON LOCATION
P. 7
6.2 Name of Parts & Position
* Operation:
Press the power button to turn on the power. Notice that covering the
light-detecting surface with the cap.“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 conrming the “0.0” display, remove
the cap to start measuring.
After the measurement has been completed, press the power button
again to turn o the power, and cover the light-detecting surface with
the cap for protecting against stray light.

6. SYMBOL DEFINITION AND
BUTTON LOCATION
P. 8
Note:
If “ERR1” appears, check the cap to make sure it is on properly.
1Lens Protecting Cover :
This is used to protect the
photo lance from scratching
and create complete dark
environment for the meter
to perform dark current
calibration. During power
on process, this cover
should be set properly in
front of the sensor lens,
otherwise an error message
will be shown on the LCD.
2Light Sensing Probe:
•This probe can be xed on the meter parallel or perpendicular to the
LCD surface.

6. SYMBOL DEFINITION AND
BUTTON LOCATION
P. 9
•Or it may be detached from the
unit to t the measuring
requirement.
6 1/2" large size back light
LCD display.
LCD display:3
Push this button to turn on the meter. Push and hold this button for 3
seconds to turn it o. The unit will automatically turn itself o after 30
minutes if no key operation. To disable the automatic power o
function, turn the meter o, push and keep holding“ ” button, then
push power button to turn on. The“ ” will disappear from the LCD to
conrm this operation.
Power button:4
Push this button to turn on and o the LCD backlight. The backlight will
be automatically o after 30 seconds to save battery power.
Backlight ( Power ) button:5

6. SYMBOL DEFINITION AND
BUTTON LOCATION
P.10
The user may hold the present reading and keep it on the LCD display
by pressing the button. To release the data held operation, user
may press the button again.
HOLD button:6
Push this button to set the meter working under MAX/MIN mode. By
pushing this button, the user may swap the LCD reading among
maximum, minimum and current reading. Push and hold this key for 3
seconds to exit MAX/MIN mode.
Max Min button:7
The user may use this button to select the preferred measuring or
automatically selected by the meter. The available ranges are:
AUTO, 200, 2000, 20000, 200000 lx / AUTO, 20, 200, 2000, 20000 fc
Range selector button:8
To switch the measuring unit between Foot Candle and Lux.
Fc/lx selector button:9
When battery capacity segment is
less than one, the user should
replace the battery. The battery
cabinet cover can be opened with a
Philips screw driver and two AA type
batteries should be installed.
Battery cabinet cover:10

P.11
6. SYMBOL DEFINITION AND
BUTTON LOCATION
Press button, and use ▲and ▼to select a preset correction
setting from L0 to L8. According to the lighting source, the user should
set the appropriate preset correction for the accurate measuring result.
The user can set his correction factor if a high precision light meter
with “ V(λ) ”< 3% is available. The available setting are list bellow:
L0: Standard incandescent light source
L1: LED white daylight (5000K)
L2: LED AMBER (YELLOW) light (3000K)
L3: LED GREEN light
L4: LED RED light
L5: LED BLUE light
L6: Warm White Fluorescent Lamp (4000K)
L7: Cold White Fluorescent Lamp (6500K)
L8: user setup mode
Set button:11
Note: 1fc =10.76lxi

P.12
7. CHARACTERISTICS OF SENSOR
SPECTRUM RESPONSE

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EC1M 6HW, London,
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