Solutions for LM-79
Why Do We Need to LM 79 Test?
Why Do We Need to LM 79 Test?
LED is becoming so popular that it has replaced all other lightning sources like candescent lamp, CFL. Manufacturer have shifted to produce LED and making profits by selling low quality products in the market. This can deteriorate the LED business. LM 79 helps to access the LED by giving the photometric parameters and electrical parameters.
LM 79 focus on the absolute photometry, so it directly measures the total lumen of the complete lightning system including fixture, driver etc. LM 79 test report gives electrical and photometric parameter.
Photometric parameter: Luminous flux (lm), efficacy (lm/w), Luminous intensity distribution (candela), chromaticity coordinates, correlated color temperature (CCT), color rendering index (CRI)
Electrical parameter: voltage, current, frequency, power, power factor.
LM 79 Data enable objective product comparison and allows for evaluation relative to performance requirement.
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!
Mr. Puneet Sharma | Call: 08196980555 | E-mail: [email protected]
Get Instant Quotations, Fill the Enquiry form:
What is LM 79 Test methodology?
What is LM 79 Test methodology?
LM 79 is an approved method that describes the procedure to be followed and precautions to be observed in performing reproducible measurements of total Luminous flux, electrical power, luminous intensity distribution, chromaticity of Solid-State lighting products for illumination purposes under standard conditions.
LM 79 covers- LED based SSL products with control electronics and heat sinks. Luminaries (fixtures incorporating light source) as well integrated LED lamps.
LM 79 doesn’t cover– fixtures without a light source, SSL products that require external operating.
LM 79
Test method for total luminous flux Measurements:
The total luminous flux of SSL product shall be measured with an Integrating Sphere or Goniophotometer. The method may be chosen depending upon what other measurements quantities (color, intensity distribution) need to be measured., the size of SSL products, and other requirements.
The integrating sphere is suited for total luminous flux and color measurements of integrated LED lamps and relative small size LED luminaries. Advantage of using integrating sphere is that it does not requires the “ Dark Room”., and also it is less time consuming.
The Goniophotometer provides measurements of Luminous Intensity Distribution as well as total luminous flux. It can take measurements of larger size luminaries as well as small size luminaries. It has to be installed in Dark Room. Measurements in goniophotometer are time consuming.
| Integrating Sphere | Goniophotometer | |
| Conditions | No Dark room | Dark Room |
| Size of SSL | Small Size luminaries | Large size as well as small size Luminaries |
| Measurements | Total Luminous Flux | Light Intensity Distribution , Total Luminous Flux |
| Duration of Test | Fast Measurements | Time consuming as compared to Sphere photometer. |
If you’re Buyers Demanding for Luminaries 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!
Mr. Puneet Sharma | Call: 08196980555 | E-mail: [email protected]
Get Instant Quotations, Fill the Enquiry form:
LM 79 testing on led products
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..
Puneet Sharma | 08196980555 | [email protected]
