Patron LED tri-proof light

DLG-APPROVED "Resistance to ammonia"

Download print version

Test report 7079

The approval

A test mark „DLG-APPROVED for individual criteria“ is awarded for agricultural products which have successfully fulfilled a scope-reduced usability testing conducted by DLG according to independent and recognized evaluation criteria. The test is intended to highlight particular innovations and key criteria of the test object. The test may contain criteria from the DLG test scope for overall tests, or focus on other valuedetermining characteristics and properties of the test subject. The minimum requirements, test conditions and procedures as well as the evaluation bases of the test results will be specified in consultation with an expert group of DLG. They correspond to the recognized rules of technology, as well as scientific and agricultural knowledge and requirements. The successful testing is concluded with the publication of a test report, as well as the awarding of the test mark which is valid for five years from the date of awarding.

The ammonia resistance test was performed as a laboratory test according to the patented DLG test standard. This test is intended to determine the suitability of equipment for animal living areas to withstand the impacts of animal environments. The cleaning distance test assesses the suitability for cleaning animal living areas. Other criteria were not tested. As of 2017 the luminaires will be operated in the test chamber both passively (without power supply) as well as actively according to a determined test program.

Assessment – brief summary

The LED light “Patron LED tri-proof light” has successfully com­pleted the DLG test for ammonia resistance. According to this result, it can be assumed that these luminaires are resistant to the typical environmental conditions of animal living areas and that no accelerated reduction of the product lifetime will occur. In addition, the LED light “Patron LED tri-proof light” was operated actively in the chamber for the entirety of the test. No product damage was observed here.

Table 1: Overview of results

Test resultEvaluation*
Resistance to ammonia of the luminaire housing 
resistant+

Evaluation scheme

Test resultEvaluation*
Resistance to ammonia 
resistant+
partly resistantO
non-resistant

* Evaluation range: ++ / + / ◯ / – (◯ = standard, n.a. = not evaluated)

The product

Description and Technical Data

The LED light “Patron LED tri-proof light” tested here is suitable for use in animal living areas. The material of the housing consists of PMMA.

 

Table 2: Technical data (according to manufacturer)

 Patron LED tri-proof light
Technical data (according to manufacturer) 
Electrical connection 
Voltage100-277 V
Frequency50/60 Hz
Performance35 W (130 lm/W)
Dimension and weight 
Length1,200 mm
Diameter70 mm
Weight1.68 kg
Additional technical data 
Number of LED modules1 pcs light module with 260 pcs LED
Housing materialDiffuser: PMMA, End cap: PA66, Inner housing: Aluminium
Colour temperature5000 K
Dimmableno
Light angle120°
Light yieldtotal lumens output: 4550 lm ± 5 %
Designed lifetime50000H@L70

The method

Resistance to ammonia

The ammonia resistance of the LED light “Patron LED tri-proof light” was determined by a laboratory test with one luminaire according to the patented DLG test standard for agricultural use. The laboratory test is designed to replicate the conditions of a usage period of about 10 years exposure to animal living areas.

The test was carried out in a climate chamber under the following climate conditions:

Test duration1500h
Air temperature70°C
Relative humidity70 %
Ammonia concentration750ppm

For assessing the ammonia resistance, each luminaire was examined visually, gravimetrically and the plastic parts additionally through measurement of the hardness (Shore D) before and after the climate testing. Since 2017, luminaires have additionally been following a cycle of operation predefined by DLG (3 hours on, 1 hour off) in order to eveluate any thermal impacts caused by switch-on and -off procedures during ammonia fumigation.

In order to avoid overheating (> 70 °C), the luminaires could be operated at a reduced power level during the testing period.

Table 3: Test conditions cleaning distance

Line pressure~150 bar
Watercold, approx. 1,000 l/h, no detergents
Nozzle typeFlat spray nozzle, 25°
Exposition time1 minute
Distance250 mm, 200 mm, 150 mm, 100 mm, 50 mm
Ambient temperature10°C

For all test procedures, the LED light “Patron LED tri-proof light, 1.2 m long” has been used. After the tests, the luminaires underwent visual examination to a reference sample that was identical in construction.

The test results in detail

Resistance to ammonia

Visual test

The comparative visual examination after the ammonia exposure has shown minor discolorations at the luminaire housing.

During the test, the tube light appeared to be sufficiently gas-tight. Nevertheless it cannot be ruled out, that a limited ammount of ammonium compounds could enter the luminaire housing. Again, no negative impact on the luminaire performance needs to be expected.

The defects are rated as insignificant. The examination of the manufacturer’s mounting parts didn’t also show any defects.

Gravimetric test

Weight comparisions before and after the ammonia fumigation have not shown any measurable increases or decreases in weight.

Hardness test

During the hardness test (Shore D) no measurable changes were observed. All determined changes were within the measurement incertainty.

Functional test

No defects were observed. All luminaires worked after the conducted tests.

Cleaning distance

Even at a cleaning distance of only 100 mm, no damages to the luminaire could be observed. At no time a water ingress into the luminaires was noticed. In order to avoid damage to the luminaires during cleaning reliably, according to the manufacturer’s specifications a minimum cleaning distance of 10 cm should always be ensured.

Based on the results of these tested parameters, the luminaire is evaluated as resistant to ammonia.

Summary

The results show that the LED light “Patron LED tri-proof light” fulfills the testing requirements for ammonia resistance (evaluation “¡” or better) and thus receives the test mark DLG-APPROVED. It can be expected that the luminaire is resistant to ammoniacal air in barns and stables and that no accelerated reduction of the product lifetime occurs.

The LED light “Patron tri-proof light” was operated both passively and actively during the ammonia fumigation in the test chamber and passed both tests successfully.

Other critera have not been assessed.

Applicant and test implementation

Manufacturer and applicant

DOTLUX GmbH
Richard-Stücklen-Straße 7
91781 Weißenburg
Deutschland

Contact

Phone +49 (0)9141 4051-202
Telefax +49 (0)9141 4051-999
info@dotlux.de
www.dotlux.de
http://www.rzb.de

Test implementation

DLG TestService GmbH, Gross-Umstadt location
The tests are conducted on behalf of DLG e.V.

DLG test framework
DLG-Approved Test “Ammonia resistance”
(current as of 07/2018)

Department
Agriculture

Head of Department
Dr. Ulrich Rubenschuh

Test engineer(s)
Dipl-Ing (FH) Tommy Pfeifer *

*    Author

Contact us

DLG TestService GmbH - Groß-Umstadt location • Max-Eyth-Weg 1 • 64823 Groß-Umstadt • Tel: +49 69 24 788-600 • tech@DLG.org