PerfectPrime LM531 LED Light Meter Instruction Manual
- June 16, 2024
- PerfectPrime
Table of Contents
PerfectPrime LM531 LED Light Meter
Product Information
Specifications
- Compliance: EMC
- Replacement parts: Use only specified replacement parts for servicing
Introduction
The LED Light Meter LM531 is a device used for measuring illumination
values. It features a LCD display and various buttons for easy operation.
Precautions On Handling
When handling the meter, it is important to avoid dropping it or hitting it
with a hard object. Additionally, it should not be used in dirty, dusty, or
corrosive environments. If dirt or dust accumulates on the surface of the
detecting light, it can affect the accuracy of the measurements. To clean the
surface, gently wipe it with a soft and dry cloth.
Maintenance
For maintenance, it is recommended to periodically wipe the case of the
meter with a dry cloth. Avoid using abrasives or solvents as they may damage
the instrument.
Product Usage Instructions
LCD Display
- Auto power off indicator
- Battery capacity indicator
- Light source correction value choice indicator
- Range indicator
- Minimum value indicator
- Maximum value indicator
- Value hold indicator
- Set light source mode indicator
- Illumination value
- Illumination Unit indicator
Name of Parts & Position
The LED Light Meter LM531 has the following parts:
- Sensor Cap: This is used to protect the photo lance from scratching and create a complete dark environment for the meter to perform dark current calibration. During the 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.
Safety Information
Read the following safety information carefully before attempting to operate or service the meter. Use the meter only as specified 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 specified replacement parts.
Introduction
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 certified. This meter has the following characteristic.
- Easy to use
- Automatic zero
- Automatic ranging
- MAX/MIN function
- Large backlight LCD display
Precautions on handling
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.
Maintenance
Attention!
Repairs or servicing not covered in this manual should only be performed by
qualified personal.
Cleaning
Periodically wipe the case with a dry cloth. Do not use abrasives or solvents
on this instrument.
Symbol Definition & Button Location
LCD Display:
- Auto power off indicator
- Battery capacity indicator
- Light source correction value choice indicator
- Range indicator
- Minimum value indicator
- Maximum value indicator
- Value hold indicator
- Set light source mode indicator
- Illumination value
- Illumination Unit indicator
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 confirming the “0.0” display, remove the cap to start measuring.
- After the measurement has been completed, press the power button again to turn off the power, and cover the light-detecting surface with the cap for protecting against stray light.
Notes
If “ERR1” appears, check the cap to make sure it is on properly.
Sensor Cap:
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.
Light Sensing Probe:
This probe can be fixed on the meter parallel or perpendicular to the LCD
surface. Or it may be detached from the unit to fit the measuring requirement.
LCD Display:
6 1/2″ large size back light LCD display.
Power button:
Push this button to turn on the meter. Push and hold this button for 3 seconds
to turn it off. The unit will automatically turn itself off after 30 minutes
if no key operation. To disable the automatic power off function, turn the
meter off, push and keep holding “ ” button, then push power button to turn
on. The “ ” will disappear from the LCD to confirm this operation
Backlight ( Power ) button :
Push this button to turn on and off the LCD backlight. The backlight will
be automatically off after 30 seconds to save battery power.
HOLD button:
The user may hold the present reading and keep it on the LCD display by
pressing the button. To release the data held operation, usermay press the
button again.
Max Min button:
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.
Range selector button
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
Fc/lx selector button:
To switch the measuring unit between Foot Candle and Lux.
Battery cabinet cover:
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.
Set button:
Press button, and use and to select a preset correction setting fromL0 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() ” < 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 (2700K)
- L7 : Cold White Fluorescent Lamp (6500K)
- L8 : user setup mode
Note : 1fc =10.76lx
Characteristics Of Sensor Spectrum Response
Specifications
Measuring Level Range
| 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
---|---
Resolution| 0.1 lx, 0.01 fc
Accuracy| ±3% rdg ±5 dgts (Standard A light source) 8% other visible
light source
Angle Deviation From Cosine Characteristics| 10°± 1% 30° ± 2%
60° ± 5% 80° ± 20%
Temperature Characteristics:| ±0.1% / °C(25°C)
Response Time| 0.5 sec
Light Detector| SI Photodiode
Over Range| “-OL-” display
Power Supply| 1.5V type AA battery x2
Power Life| Approx. 80 hours
Operation Temperature|
0°C ~ 40°C(32°F ~ 104°F)
Operation Humidity| 0~80% RH
Storage Temperature| -10 to 50°C (14 to 122°F)
Storage Humidity:| 0 to 70% RH
---|---
Dimension / Weight| 169(L)×63(W)×37(H)mm (6.7”×2.5”×1.5”)
Weight| Approx. 210g
Accessories| Battery, instruction manual, carrying case.
CUSTOMER SERVICE INQUIRIES
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within 24 hours. In exceptional cases, we may require more time to respond.
Thank you for your understanding;
For more information about our products and services, please send us an email:
cs@perfectprime.com
For B2B or project-based application, please send an email:
sales@perfectprime.com
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Retailer : Tyche Smart Limited
Email : cs@perfectprime.com
Address : 2nd Floor, 107 Charterhouse Street, EC1M 6HW, London, England
UNITED KINGDOM
Telephone : +44 203 7695377
Frequently Asked Questions
Can I use the LED Light Meter LM531 in a dirty or corrosive environment?
No, it is recommended to avoid using the meter in dirty, dusty, or salt-air areas, or where there are corrosive gases. These conditions can affect the accuracy of the measurements.
How should I clean the surface of the detecting light?
To clean the surface, gently wipe it with a soft and dry cloth. Avoid using abrasive materials or solvents as they may damage the instrument.
What are the available preset correction settings?
The available preset correction settings are L0 to L8. These settings correspond to different light sources and can be selected using the Set button. Additionally, if you have a high precision light meter with V() < 3%, you can set your own correction factor in the user setup mode (L8).
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