GDJS/GDJW High and Low Temperature Humidity Chamber is Designed According to IEC 60068-2-1 Environmental Testing Part 2-1: Tests-Test A: Cold

The full name of IEC 60068-2-1 is Environmental Testing Part 2-1: Tests-Test A: Cold. It is edited by the IEC technical committee in 2008.We will introduce the IEC 60068-2-1 Environmental Testing Part 2-1: Tests-Test A: Cold
The following is the original content of IEC 60068-2-1
IEC 60068-2-1 Environmental Testing Part 2-1: Tests-Test A: Cold
This part of IEC 60068 deal with cold tests applicalbe to both non heat-dissipating and heat-dissipating specimens. For non heat-dissipating specimens, Tests Ab do not deviate essentially from earlier issues. Test Ae has been added primarily for testing equipment that requires being operational throughout the test, including the conditioning periods.
The object of the cold test is limited to the determination of the ability of components, equioment or other articles to be used, transported or stored at low temperature.
Cold tests cover by this standard do not enable the ability of specimens to withstand or operate during the temperature variations to be assessed. In this case, it would be necessary to use IEC 60068-2-14.
The cold tests are subdivided as follows:
- Cold tests for non heat-dissipating specimens
. with gradual change of temperature, Ab;
- Cold test for heat-dissipating specimens
. with gradual change of temperature, Ad,
. with gradual change of temperature, specimen powered throughout, Ae.
The procedures given is this standard are normally intended for specimens that achieve temperature stability during the performance of the test procedure.
LISUN designed the GDJS/GDJW High and Low Temperature Humidity Chamber according to the IEC 60068-2-1 standard. It is used to test the CFL/LED which meets IES LM-80-08, electricity products, electronic components, material and so on. We will update the procedure and testing parameters according to the updating of the IEC 60068 standard.

The following is the picture GDJS/GDJW High and Low Temperature Humidity Chamber

The following is the video of GDJS/GDJW High and Low Temperature Humidity Chamber


Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Spectroradiometer, Integrating Sphere, LED Test Instruments, CFL Test Instruments, Photometer and Colorimeter, EMC & EMI Testing, Surge Generator, Electrical Safety Testing, Environmental Test Chamber, IP Waterproof Test Equipment, Dustproof Test Chamber, High and Low temperature Humidity Chamber, Plug and Switch Testing, AC and DC Power Supply.


Please feel free to contact us if you need any support.
Tech Dep: Service@Lisungroup.com, Cell/WhatsApp: +8615317907381
Sales Dep: Sales@Lisungroup.com, Cell/WhatsApp: +8618917996096

IK01-10 IK Level Tester is Designed According to IEC 60068-2-75: Tests- Test Eh: Hammer tests.

The full name of IEC 60068-2-75 is Environmental testing-Part 2-75: Tests- Test Eh: Hammer tests. It has been prepared by IEC technical committee 104:Environmental conditions, classification and methods of test. We will introduce the IEC 60068-2-75-1 Scope
The following is the original content of IEC 60068-2-75-1.
IEC 60068-2-75-1 Scope
This part of IEC 60068 provides three standardized and coordinated test methods for determining the ability of a specimen to withstand specified severities of impact. It is used, in particular, to demonstrate an acceptable level of electrotechnical items. It consists of the application to the specimen of a prescribed number of impacts defined by their impact energy and applied in the prescribed directions.
This part of IEC 60068 covers energy levels ranging from 0.14J (joules) to 50J(joules).
Three types of test apparatus are applicable to perform these tests. Annex C provides some guidance to this aspect.
Here is the IK level test (Impact Protection) rating table:

IK01	IK02	IK03	IK04	IK05	IK06	IK07	IK08	IK09	IK10
0.14J	0.2J	0.35J	0.5J	0.7J	1j	2j	5j	10j	20j

LISUN designed the Spring Impact Hammer IK Level Tester for IK01, IK02, IK03, IK04, IK05 and IK06 test. LISUN also designed the IK Level Tester for IK07, IK08, IK09 and IK10 test. All the equipment are designed according to the IEC standard. Because most of luminaires manufacturers are requested to do IK level test. We can also design other kinds of level tester according to the customers’ requires.
Degrees of protection against external mechanical impacts:
The following is the picture of IK01-10 IK Level Tester


The following is the video of IK01-10 IK Level Tester

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Spectroradiometer, Integrating Sphere, LED Test Instruments, CFL Test Instruments, Photometer and Colorimeter, EMC & EMI Testing, Surge Generator, Electrical Safety Testing, Environmental Test Chamber, IP Waterproof Test Equipment, Dustproof Test Chamber, High and Low temperature Humidity Chamber, Plug and Switch Testing, AC and DC Power Supply.


Please feel free to contact us if you need any support.
Tech Dep: Service@Lisungroup.com, Cell/WhatsApp: +8615317907381
Sales Dep: Sales@Lisungroup.com, Cell/WhatsApp: +8618917996096

Standard for testing ultraviolet intensity of UV (ultraviolet) lamps used for disinfection

The principle of ultraviolet disinfection is to use ultraviolet radiation to cause photolysis and denaturation of bacteria proteins, and the amino acids, nucleic acids and enzymes of bacteria are destroyed and died. At the same time, when the ultraviolet rays pass through the air, the oxygen in the air is ionized to generate ozone, which strengthens the bactericidal effect. Ultraviolet is mostly used for disinfection of air and objects, with a wavelength of 253.7nm. For air disinfection, the effective distance does not exceed Zm, the irradiation time is 30 ~ 60min, for the disinfection of items, the effective distance is 25 ~ 60cm, the irradiation time is 20-30min, and the timer starts from 5-7min when the light is on. In order to ionize oxygen in the air to produce ozone).

When the ultraviolet lamp used for disinfection is at a voltage of 220V, an ambient relative humidity of 60%, and a temperature of 20 ° C, the radiation intensity of 253.7nm ultraviolet rays should not be less than 70μw / cm² Measurement, the special ultraviolet lamp is measured at the distance of use, the ultraviolet intensity meter used must be calibrated). The ultraviolet lamp's irradiation intensity gradually decreases during use, so the intensity of disinfecting ultraviolet rays should be measured frequently, once it drops below the required intensity; it should be replaced in time, so it is required to use an ultraviolet radiation meter to detect the intensity of ultraviolet radiation.

It is generally tested in accordance with the technical specifications of the UV lamp. The UV lamp manufacturer will provide the intensity description:

1.The center intensity at xx mm is as high as xxx μw / cm², and it is sufficient to measure it with an ultraviolet light meter according to this data.
2.There will be a minimum intensity, and the minimum intensity of the effective irradiation area will reach xxx μw / cm². According to this data, use an ultraviolet illuminance meter to measure.

Knowing the above UV intensity test standards for UV lamps that can be used for disinfection, we can know that the LPCE-2 (LMS-9000BUV) UV lamp test system of Shanghai Lishan meets the UV intensity test standards of UV lamps. LISUN LPCE-2(LMS-9000BUV) UV Lamp Test System is used to test the UV lamp (light source) Spectrum, Radiant, Efficiency, CRI, CCT, UVA, UVB, UVC radiant and electric parameters.Spectral Range Wavelength: 200-400nm(UV). The whole system includes the LMS-9000BUV High Precision UV Spectroradiometer,CFS-1.2M Silica Fiber,CASE-UV036 Dark Case for UV Test ,SLS-UV UV Standard Light Source with Calibrate Current (Optional).

Here is photo below shows the test system:

LMS 9000BUV

The following is the test report of this product for your reference:

LMS 9000BUV Test Report

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Spectroradiometer, Integrating Sphere, LED Test Instruments, CFL Test Instruments, Photometer and Colorimeter, EMC & EMI Testing, Surge Generator, Electrical Safety Testing, Environmental Test Chamber, IP Waterproof Test Equipment, Dustproof Test Chamber, High and Low temperature Humidity Chamber, Plug and Switch Testing, AC and DC Power Supply.


Please feel free to contact us if you need any support.
Tech Dep: Service@Lisungroup.com, Cell/WhatsApp: +8615317907381
Sales Dep: Sales@Lisungroup.com, Cell/WhatsApp: +8618917996096