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LM 79 Testing Laboratories – ITC India LED Test Laboratories

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LM 79 Testing Lab, LM 79 Test Labs, LM 79 Test Laboratories, LM 79 Testing

Get introduced with the best place which is ITC India for LM-79 Testing Labs where you can have the best result for LM-79 Testing. Call on 0826440109108196980555 for LM-79 Testing laboratories

LM 79 Testing

As the development of LED technology continues to grow and diversify, the need for consistent and standardized testing procedures for LED has become more prevalent than ever. ITC India is a NABL and BIS Accredited testing for LM-79

ITC India has made strides to stay current with the new testing standard LM 79 set forth by the Illuminating Engineering Society of North America. In addition, ITC India testing is now a priority when testing our LED light systems for more reliable results.

LM 79 Testing Laboratories

LM-79 is a method approved for taking electrical and photometric measurements of SSL products. So ITC India Pvt Ltd. is providing you accurate LM-79 testing by experts in the very short period of time. LM-79 covers total flux, light output, electrical power, efficacy, chromaticity, and intensity distribution. The five required metrics on the LED Lighting Facts label come from LM-79 testing Laboratories results.

IES LM-79 Electrical and Photometric Measurements of Solid-State Lighting Products

An approved method describing procedures and precautions in performing reproducible measurements of LEDs:

  • Total luminous flux
  • Electrical powers
  • Luminous Intensity distribution
  • Efficacy (lm/watt)
  • Chromaticity

What Is LM-79 Testing?

Everyone knows about it, in 2008, the Illuminating Engineering Society published LM 79, Approved Method for the Electrical and Photometric Measurements of SSL Products. LM-79 testing lab capture performance nature of products that feature SSL, including light emitting diodes LEDs.

 LM 79 Testing Scope

Applies to LED-based products incorporating control electronics and heat sinks, that is, those devices that require only AC mains power or a DC voltage power supply to operate.

Who can perform testing?

LM 79 testing should be performed by ITC India Laboratory for the category of the product tested. Only reports from recognized laboratories are relevant. This standard is used for the Department Of Energy ENERGY STAR program qualification and lighting facts advocate program. All ITCIndia product testing is performed according to LM 79  in a NABL and BIS recognized laboratory and reports are available upon request.

Why We Use LM-79 Testing Lab?

The LM-79 testing lab provides a snapshot of performance under specified operating conditions at some point in the life of a product, usually, at the beginning of the operation, these are referred to as initial measurements. It never addresses permanent ratings, changing performance over time lumen maintenance, or LED case temperature.

The LM 79 methods are really applicable to integrated LED products, such as luminaries and replacement lamps. It is not applicable to LED packages, modules, or arrays

  • LM 79 is the method for testing electrical and photometric measurements of SSL lighting products.
  • LM 79 contains procedures for performing reproducible measurements of LED properties, including total flux, electrical power, efficacy, and chromaticity.
  • The scope of LM 79 Testing Laboratories applied to LED products that incorporate control electronics and heat sinks. This covers complete LED luminaries and integrated LED sources. It does not include bare LED chips or LED-based products without a light source.

Absolute Photometry Basis

  • LM 79 requires complete luminaire testing
  • Traditionally, photometric evaluation of lighting products is based on separate tests for lamps and luminaires relative
  • For solid-state lighting products, LED lamps typically cannot be separated from their luminaire because of heat effects absolute

What Is Important Aspect Of LM-79 Testing?

LM 79 testing requires complete luminaries testing on an absolute photometric basis. Typically lighting products are evaluated on a relative photometric basis, where separate tests are done for lamps luminaries. However, for SSL products the LED lamps typically cannot be separated from their luminaries. The absolute photometric testing required measures the light distribution and light intensity of the complete luminaries.

In recent times, the term LM 79 Testing laboratories have become part of our lighting lexicon and have been treated in some cases as lighting program all its own. While many lighting programs such as DLC and Energy Star reference LM 79 procedures, it is not in and of itself a lighting program with specified requirements and pass/ fails criteria.

However, the term LM 79 Testing Lab has come to generally be recognized as two distinct tests a candela distribution test with an IES file, and an integrating sphere test for a standard color CCT, CRI, Duv, chromaticity coordinates. Nevertheless, any time LM 79 is mentioned in reference to the desired testing, our staff will verify exactly what the customer requires since many measurement options are discussed in the official document.

Relative vs. Absolute Photometry

Relative testing  Lamps of interest and luminaire with reference lamp are measured separately. Then the actual light distribution and intensity of the complete luminaire of interest is derived by normalization of the test data

Absolute testing The actual light distribution and intensity of the luminaire of interest are measured directly from the complete luminaire.

Why choose ITC?

We, ITC India providing service to the client from the last 8 years with 100 % satisfied clients. Being NABL accredited, it is equipped with highly accurate machines, experienced and competent engineers. Customer satisfaction is the quality policy of the company. So, we are here to serve the clients in their testing requirements.

  1. Reasonable Price: Very competitive price, being one of the best on the market. Moreover, this price has no hidden fees.
  1. The quality of our support is unmatched: We take to support one step further by tailoring our replies to suit your knowledge, expectations, and personality.
  1. We’re passionate about what we do: What sets us apart from the competition is that we’re passionate about the services we provide and quality of support.
  1. Proven track record: We’ve gained a reputation as a reliable and honest company in the last 7 years with most of our customers coming from reference.

If Your Buyers Demanding for Street Light Testing – Contact Now!

Kindly send us the following Details, So that we can provide you with a quotation for the same:

  1. Product Name, Technical Specifications, and Brochure
  2. Product Images
  3. Total Number of Samples Required: 2

Wish this blog post will help. If you have any other questions, please feel free to contact us. ITCIndia team looking forward to working with you and get better together!

Mr. Puneet Sharma | Call: 08196980555 E-mail: ITCIndiaOne@Gmail.Com

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What are the limitations of LM-79?

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What are the limitations of LM-79?

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!

Mr. Puneet Sharma | Call: 08196980555 | E-mail: ITCIndiaOne@Gmail.Com

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What are LM 79 Test Outcomes?

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What are LM 79 Test Outcomes?

LM-79 is approved test method for electrical and photometric measurements of Solid State Lighting Products. It describes the procedure in measuring total luminous flux, electrical power, luminous intensity distribution, chromaticity under standard conditions. It covers LED based SSL products with control electronics and heat sink incorporated with AC or DC power supply. This does not include LED chips, LED package or LED module but luminaries (fixtures incorporating light source) as well as integrated LED lamps.

The equipment used in LM-79 is integrated sphere and goniophotometer.

Integrating Sphere                          Goniophotometer

The test report shall list all significant data for each SSL product tested together with performance data. The outcomes of the LM-79 test are:

  • Correction factor applied ( e.g. spectral mismatch, self absorption , intensity distribution etc.)
  • Measured total luminous flux( lumen(lm)), input voltage(v), current(a), power(w), Luminous intensity distribution(cd), efficacy(lm/w)
  • Color quantities( chromaticity coordinates, CCT, CRI )
  • Spectral power distribution
  • Bandwidth of spectoradiometer, if spectral distribution and/or color quantities are reported.
  • Statement of uncertainties (if required)
  • Deviation from standard operating procedures, if any.

Here is the link of a test report issued by our prestigious company. LM 79 Test Outcomes

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: ITCIndiaOne@Gmail.Com

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What is LM 79 Test methodology?

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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: ITCIndiaOne@Gmail.Com

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What is the LM-79 Testing of LED Lights?

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What is the LM-79 Testing of LED Lights?

LM-79 Testing for LED Lights

LM-79 is an approved method for taking electrical and photometric measurements of SSL products. It covers total flux (light output), electrical power, efficacy, chromaticity, and intensity distribution. The five required metrics on the LED Lighting Facts label come from LM-79 testing results.

ITCIndia Offering you a complete choice of services which include LM 79 Testing, Safety Testing, Electrical Testing, IEC/EN/IS/BS/ISO Testing, IP testing as per IEC 60529 and Cable Gland Testing.

ITCIndia Laboratory has been awarded accreditation by the NABL under the Energy Efficient Lighting Products Program. This includes LM-79 accreditation for Solid State Lighting Luminaires – Total Flux Measurements (Luminous Efficacy) and Solid State Lighting Luminaires –Luminous Intensity Measurements.

Our accreditation also includes IES LM-80:2008 for Solid State Lighting Luminaires-Lumen Maintenance (SSL Life Tests).

ITCIndia laboratory is also on the LED Lighting Facts Approved Labs List.

ITCIndia can do safety testing against below international standard like

  •    IEC 61010-1 : lab instruments
  •    IEC 60204-1 : COntrol panel
  •    IEC 60595 : LED luminary
  •    IEC 61347 : Lamp control gear
  •    IEC 60950 : Information technology equipments
  •    IEC 60601 : Electromedical equipmets
  •    IEC 60065 : Audio video & similar product
  •    IEC 61439 : Low voltage switchgear & control gear assemblies
  •    IEC 60034 : rotating electrical machine and more contact us for more information…

LM-79 Definition and Scope

IES LM-79 is an approved method for testing electrical and photometric measurements of solid-state lighting products. LM-79 contains procedures for performing reproducible measurements of LEDs properties, including: total flux, electrical power, efficacy and chromaticity.

The scope of LM-79 applies to LED products that incorporate control electronics and heat sinks. This covers complete LED luminaires and integrated LED sources. It does not include bare LED chips or LED based products without a light source.

LM-79 testing requires complete luminaire testing on an absolute photometric basis. Typically lighting products are evaluated on a relative photometric basis, where separate tests are done for lamps an luminaires. However, for solid state lighting products the LED lamps typically cannot be separated from their luminaires. The absolute photometric testing required measures the light distribution and light intensity of the complete luminaire.

LM-79 Procedures and Conditions

  • Ambient Conditions
  • Maintain temperature at 25 degrees C +/-1 degree C (within 1M)
  • Mounting – limit thermal transfer
  • Limited air flow
  • Power Supply
  • AC waveshape limit to harmonic RMS of 3%
  • Voltage regulation to +/- 2%
  • Seasoning and Stabilization
  • Testing Orientation
  • Electrical Settings
  • Instrumentation

LM-79 Testing Methods

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.

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.

LM-79 Test Outputs and Calculations

  • Total Luminous Flux
  • Luminous Intensity Distribution
  • Electrical Power
  • Luminous Efficacy
  • Chromaticity
  • CCT
  • CRI

For your better understanding, we are going to show you the LM-79 test report of latest LED in the following:

Learn more about this Lm-79 test >

If you’re Buyers Demanding for LM-79 Testing for LED Lights– 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: ITCIndiaOne@Gmail.Com

Get Instant Quotations, Fill the Enquiry form:

 

Lm-79 Testing | Lm 79 test report | Lm 79 test procedure India

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LM-79 Testing, Lm 79 Test report, LM 79 Test procedure, India

ITC India is a NABL accredited laboratory in discipline of Electrical (T-1811), Electronics (T-3509) and photometry (T-3510), serving its satisfied customers for last 5 years. Laboratory is fully equipped with the highly accurate Machines to test LM 79. It owns a Integrating sphere as well as the Goniophotometer.  Qualified and experienced engineer are appointed to perform the desired tests.

Gone are those days when we use incandescence (tungsten filament) or fluorescent (mercury atoms) bulb. They are replaced by LED’s Now; this is an era of SSL (LED) as ……There is innumerable reason for the rise in LED’s which cannot be counted on finger tips. It is beneficial to both USERS as well as to the nation. Its superior features make it so promising that one cannot deny using LED’s.  The features of LED’s are, its low power consumption, digitally controllable,   Low maintenance, Ultra long source life, no UV or IR radiations, No mercury content. SSL uses semiconductors material to convert Electricity into light.  LED’s are non carbon materials.

Efficacy is the quality parameter for LED: it is measure in Lumen per watt. Higher efficacy means high energy efficient. Another quality factor is lifetime and last but not the least is Color rendering Index (CRI). CRI measures the ability of light source to reproduce the color of various objects in comparison with natural light source.

How LM-79 testing can help assess LED luminaries quality and performance?

AS LM79 report provides you with the Photometric as well as electrical parameters with a spectrum Test report. The photometric parameters are luminous flux, Efficacy and Radiant Power, CIE colorimetric Parameters (coordinates Color rendering Index (CRI), color coordinate Temperature (CCT) Duv Value, and light Intensity Distribution .Current, Voltage, Power factor, Power and frequency are the electrical parameters. It Focus on the efficiency and CRI, which are the quality parameter. Efficiency measures how much electrical energy is converting into light energy. Power factor is another electrical metric for LED driver performance and often a key parameter for street lighting due to the large number of these luminaries connected to the power grid.  As far as for lifetime, LM 80 covers that part.

What is the LM-79 test methodology?

 LM 79 is approved method to test Photometric and electrical measurements of Solid state lightning. It describes the procedure and precaution to be observed during measurements. This approved method covers LED based SSL products with control electronics and heat sinks incorporated, that is , those devices that require only AC main power or a DC voltage power supply to operate. This document does not covers SSL products that require external operating circuits, or external heat sink. LM 79 covers SSL product in a form of luminaries (fixture incorporating light source) as well as integrated LED lamps.

Why do we need it?

We need it to access the quality and other parameters due to increasing competition in the market. It provides the efficiency and power factor.   

How is LM-79 different from other test methods used for conventional lighting products?

This approved method is a guide developed for the measurements of SSL products. While many other standards for photometric measurements of light sources and luminaries are available, these standards are separated for measurements of lamps and luminaries. Since the current SSL products are in the form of luminaries or lamps, and LED light source in luminaries are not easily separated as replaceable lamps, these existing standard cannot be applied directly to SSL products. This necessitates the use of absolute photometry. This test method uses absolute photometry where as other standard uses relative photometry in short.

Now lets us clear about relative and absolute photometry.

S.NO Absolute Photometry Relative Photometry
1 Total lumen output of a luminary (bulb with fixture) Total Lumen output of a bare lamp is measured.
2 Method used to measure LED performance. Method used to measure Bare bulb and system performance.
3 Output is relative to an easy measured condition.

 

Output is measured in calibrated units under specific operating and environment conditions, ambient temperature, input voltage and orientation.
4 Specific lamp performance does not matter,

 

Lamps and system performance matters.

 

5 Use for SSL products For NON SSL products

What are the LM-79 test outcomes?

The outcome of the LM 79 is the REPORT providing all the required parameters as per LM 79.

They are ……

  1. CIE colorimetric parameters
  2. Chromaticity coordinate (x)
  3. Chromaticity coordinate (y)
  4. Chromaticity coordinate (u’)
  5. Chromaticity coordinate (v)
  6. Chromaticity coordinate (v’)
  7. Correlated color temperature(Tc)
  8. Duv Value
  9. Color Rendering Index(Ra)
  10. Photometric Parameters
  11. Luminous Flux( Lumen)
  12. Luminous Efficacy( Lm/W)
  13. Radiant Power
  14. Electric Parameters
  15. Input Voltage(V)
  16. Current(A)
  17. Power(W)
  18. Power Factor
  19. Frequency(Hz)
  20. Test information

Ambient Temperature, Stabilization Time, Total Operating Time, Sphere Dia, Photometric method or instrument used Wavelength range in nm of spectroradiometer.

Along with this a SPECTRUM TEST REPORT is also issued.

What are the limitations of LM-79?

  • Chips, Packages, or Modules requiring external heat sinks or operating circuits are not covered
  • Does not state the sampling size.

Is there a future scope for improvement in the LM-79 test?

Yes of course, there is always a scope for improvement in all areas.

Range/criteria of acceptance of CCT, CRI & Lumens may be defining to establish a harmonization of parameters globally.

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If you’re Buyers Demanding for LM-79 Testing– Contact Now!

ITC India has around 5000 clients from LED lighting division from All over India.

Get LM 79 Test Report, You can Please feel free to Ask for Quotation.

Mr. Puneet Sharma | Call: 08196980555 | E-mail: ITCIndiaOne@Gmail.Com

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