Switch with ?CCC Ex? for the Chinese market

CCC ? without proof China Compulsory Certification, many industrial goods are denied access to the ?Middle Kingdom?. Since Proven , this compulsory marking has also extended to products with explosion protection. Therefore, all WIKA instruments that are categorized as the provisions have the corresponding certificate ? ?CCC Ex?. This also includes switches such as for example mechanical pressure and temperature switches.
China Compulsory Certification has been in force since 2002. The introduction of CCC was aimed at developing a uniform certification standard for selected goods pertaining to individuals?s Republic of China. It was also designed to ensure equal treatment of domestic and foreign companies and their goods relative to WTO rules.
Certification applies for domestic and foreign companies
Initially, 132 product groups were covered by CCC. Since then, the merchandise listed therein may neither be sold or found in China nor imported into the country with out a CCC certificate. Accordingly, the certification requirement applies equally to domestic and foreign companies.
Types of instruments with CCC Ex certificate: model PCA compact pressure switch (left), model TXS miniature temperature switch (right) and model MA1 pressure switch with diaphragm element
?CCC Ex? marking
Initially, WIKA?s measuring instruments weren’t affected by the regulation. This changed when China also included explosion-protected products in the product group catalogue. Since then, these products should be marked with ?CCC Ex?. The required certification is carried out in a three-stage process. This consists of:
type testing (assessment and certification of the Ex product)
the factory inspection (initial certification of the respective manufacturing site)
the annual monitoring audits after certification
Five-year validity
Like every CCC certificate, ?CCC Ex? can be valid for five years after successful testing, provided the manufacturer carries out the annual monitoring audits.
All WIKA Ex products that correspond to the listed goods of the CCC now have a ?CCC Ex? marking. They are able to therefore be used for the Chinese market without any problems. The instruments include mechanical pressure and temperature switches, electrical thermometers (resistance thermometers and thermocouples) together with float and tuning fork switches for level monitoring.
?CCC Ex? ? Two switch series
The mechanical pressure and temperature switches contain two series:
Instruments with flameproof enclosure (Ex d) for measuring gauge pressure (PXA, PCA, MA, MAG, MAB, MAH, BAX, BA), differential pressure (DE, DA), absolute pressure (APA) and temperature (TXA, TCA, TAG)
Intrinsically safe instruments (Ex i) for measuring gauge pressure (PXS, PCS, MW, BWX), differential pressure (DC, DW), absolute pressure (APW) and temperature (TXS, TCS, TWG).
Note
More info on our pressure switches and temperature switches are available on the WIKA website. Do you want to buy pressure switches? Inside our WIKA online-shop you will find a few of our standard designs. For those who have any questions, your contact will gladly assist you to.
See also our article
CCC for electrical thermometers

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