As we all know about the strength of LM 79. Everything has its pros and cons. Let us have a look on the drawbacks of LM 79.
LM 79 depicts the parameters of the individual products. So the obtained Parameters cannot be used to access alike products.
Other limitation is the sample size. It does not state any sample size. So, the manufacturer provides only one sample instead of supplying more. This thus increases the vulnerability of lesser quality products.
This can be used only to determine complete luminary instead of LED used ( as based on absolute photometry) , which can produce different results due to quality of accessories used like glass, thermal effect, lenses etc.
If you’re Buyers Demanding for LM-79 Testing– Contact Now!
Wish this blog post will be help. If you have any other questions, please feel free to contact us. ITCIndia team looking forward work with you and get better together!
ITC India have NABL accreditation Testing laboratory under ELECTRICAL , ELECTRONICS and PHOTOMETRY testing with certificate no. T-3509 , T-3570 & T-1811. ITC India Testing Laboratory is fully equipped with high accuracy Measuring Instruments and trained personnel to provide testing and certification Services for Electrical and Electronic equipments. ITC India Laboratory is following the procedure as required by International Standard IEC 17025 and is already certified for ISO/IEC 17025. ITC India offering this LM 79 testing services in all over India like , Gujarat Ahmedabad, Mumbai, Pune, Delhi, New Delhi, Jaipur, Bangalore, Hyderabad, Chennai, Kolkata, Surat
ITC India Pvt Ltd. has recently installed the Goniophotometers LED/SSL at its Mohali laboratory. This is in addition to integrated sphere in the field of photometry testing of lamps & luminaires. With this additional testing facility, ITC India is able to perform complete photometry testing on all kinds of lamps and luminaires including LED lamps, LED Street Light, LED Downlights, outdoor lighting, LED floodlight, LED Tube lights, LED spotlight , led light strips, led light bars, led light fixtures, and luminaires.
ITC India Laboratory is totally equipped with high accuracy testing instruments like spectrometer , integrating sphere , Goniophotometer , power meter , LED driver tester , safety tester , environmental chamber , and many more to provide a total testing solution for LED based product
LM 79 Testing for Solid State lighting; It includes below parameters like total lumens , CCT , CRI , Lm/watt , Luminous intensity distribution & electrical parameter like voltage , current , power & power factor ….
ITC India have around 5000 clients from LED lighting division from All over India. if you are interested to Get LM 79 Test Report.If you’re Buyers Demanding for LM-79 Testing – Contact Now!
ITCIndia NABL Approved Electrical Safety Testing Laboratory, ITCIndia Laboratory is following the procedure as required by International Standard IEC 17025 and is already certified for ISO 17025 by NABL , has been awarded accreditation by the National Accreditation Board for Testing and Calibration Laboratories (NABL). Under the Energy Efficient Lighting Products Program. This includes LM-79 accreditation for Solid State Lighting Luminaires, Total Flux Measurements (Luminous Efficacy) & Solid State Lighting Luminaires, Luminous Intensity Measurements.
Definition of LM-79 Testing:
LM-79 is one approved method that describes procedures & precautions in performing measurement of LED products.
Scope of IES LM-79 testing:
LM-79 Testing is applied to solid-state lighting products that include the following requirements:
LED based products that are integrated control circuit and heat sinks
LED based products only requiring AC or DC power supply
And does not cover as bellow:
LED products requiring external operating circuits or heat sinks (bare LED chips, package and modules)
Fixtures designed for LED products but sold without a light source
Electrical Requirements:
SSL products work with AC power: voltage, electrical current, power, frequency, power factor
SSL products work with DC power: voltage, electrical current, power
Test Condition and Procedures/LM-79 Procedures and Conditions:
Ambient Conditions
Temperature–maintaining at 25℃±1℃ / Maintain temperature at 25 degrees C +/-1 degree C (within 1M)
Integrating Sphere: Integrating sphere systems are used to measure the total luminous flux and color for LM-79. This can be performed with a photometer (total luminous flux) or a spectral radiometer (spectral radiant flux). Utilizing a spectral radiometer and integrating sphere is the preferred method, which derives total luminous flux and color qualities form spectral radiant flux measurements. Click here to see (Video) how to do LM-79 Test with Integrating sphere systems
Flux (to derive total luminous flux and color qualities)
Goniophometer:Goniophotometer systems are also used for LM-79 testing to measure luminous intensity distribution. The Goniophotometer system tests derive total luminous flux and provide color characteristics including CCT and CRI.
For measuring luminous intensity distribution
Total luminous flux is derived
Provides color characteristics with spectral radiometer including CCT, CRI
Testing Data of IES LM-79/LM-79 Test Outputs and Calculations:
LM 79 Testing Service on led products in India, Mumbai, Chennai, Ahmedabad, Delhi, Pune
If you are looking for Lm-79 testing laboratory in your Area. ITC India Nabl Accredited Laboratory can do Test your led light for luminous flux , CCT , CRI , Efficacy , charomaticity diagram, voltage , current , power , power factor, etc..
