The Instrument Choice Team of Scientists regularly reviews new and popular products, so when searching for the perfect scientific instrument for your application, you can make more informed decisions.
This edition reviews the Extech LT45 Colour LED Light Meter, a practical and powerful LED light meter brimming with user-friendly features.
About Extech
Extech Instruments manufactures and supplies innovative and high-quality handheld test, measurement and inspection tools for use by tradespersons, professionals and DIY’ers all over the world. Instrument Choice stocks and thoroughly recommend its extensive catalogue of high-quality equipment.
Introducing the LT45 Colour LED Light Meter
LED lighting is increasing in popularity – it’s less expensive, brighter and more energy-efficient than standard incandescent lighting. However, not all standard light meters are capable of measuring LED light. Enter the LT45 Colour LED light meter; a meter is specially built to measure LED light – both white and coloured - and standard lighting. This capability makes the LT45 ideal for monitoring and optimising environmental lighting levels in many workplaces.
Key Features of the LT45 Colour LED Light Meter
- Colour light meter: The LT45 measures white, red, yellow, green, blue, and purple LED and standard lighting in lux or foot-candle units.
- Manually log data: Users can manually store and recall up to 99 light level readings.
- Enhanced accuracy: Measurements are cosine and colour corrected, and the spectral response filter nears CIE luminous spectral efficiency ratings.
- User-friendly functions: A range of useful functions ensure measurements and data collections are a breeze. Functions include; Min/Max/Average/Data hold and auto power off.
- Complete kit: The LT45 comes with everything required to begin taking LED light measurements, including; the light sensor with a protective cover and coiled cable expandable to 1.5m, the digital handheld display, a 9V battery, and a hard carrying case.
- Overload indication: The LCD screen will show “OL” at the upper left-hand corner when maximum light levels are exceeded.
- Sampling and display update rate: Measurements are taken, and the display updates 2.5 times per second.
- Zero adjustment calibration: Users can perform easy zero adjustment calibration with the cap over the sensor.
- Luminous intensity calculation: The LT45 can also calculate luminous intensity (CD) using a distance-to-the-light value programmed by the user.
- Automatic range: Automatic range adjustment optimises accuracy and resolution.
LT45 Colour LED Light Meter Specifications
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LT45 Specifications |
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Range (Resolution) |
400 (0.1), 4000 (1), 40000 (10), 400000 (100) lux |
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Basic Accuracy |
±3% |
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Range |
The meter automatically ranges the display |
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Sampling Rate |
2.5 times per second |
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Display |
6-digit LCD with battery icon, measurement overload, and other function indicators |
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Sensor |
Silicon photodiode with spectral response filter and cosine correction |
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Angle deviation from cosine characteristics (Cosine Angular corrected per JIS C 1609:1993 and CNS 5119 general A-class) |
30° (±2%) |
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LED types |
The meter measures white, red, yellow, green, and blue LED light |
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Auto-Off |
Meter powers down after 5 minutes of inactivity. Auto-off can be deactivated. |
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Operating Conditions |
Temperature: 5 to 40°C; Humidity: < 80% RH |
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Power Supply |
9V battery |
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Dimensions |
Metre: 38 x 55 x 130mm |
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Weight |
250g with battery installed |
LT45 Colour LED Light Meter Applications
Government regulations set guidelines to ensure workplace lighting is adequate for assigned tasks. The LT45 is an ideal tool for measuring LED lighting in working environments such as:
- Office buildings
- Manufacturing plants and warehouses
- University campuses
- Schools; and
- Hospitals.
Conclusion
What do our scientists conclude about the LT45 Colour LED Light Meter?
“Features of the Extech LT45 ensure easy, quick and, perhaps most importantly, accurate lighting measurements! Without hesitation, we recommend this tool for monitoring, investigating and optimising LED lighting levels within the workplace.”
After more information on the? Speak with an Instrument Choice Scientist! Call 1300 737 871 or email customer-service@instrumentchoice.com.au.
