Environmental Ratings: Third-Party Certification vs. Self-Certification

Did you know that NEMA does not require independent testing of monitor enclosures to assure compliance? Because of this, many industrial monitor manufacturers actually “self-certify” their products as being NEMA-rated or IP-sealed, leaving the customer at the mercy of whatever testing methods the manufacturer has decided to use.

At Hope Industrial Systems, we take a different approach. Although our in-house testing laboratory and our relationships with NEMA experts allow us to test to NEMA standards effectively, we go one step further and submit most of our products to qualified Underwriters Laboratories (UL) evaluators for independent testing.  Since, NEMA roughly ratings correspond to international IP ratings for environmental exposure – these tests also certify worthiness for IP 65/66 environments.

This of course involves considerable expense and effort on our part, but we as a company have made the choice to do this to assure our customers of our products’ ability to withstand the environmental challenges of a host of different industrial environments. Our products are installed in steel mills, tire plants, a variety of food and beverage plants, and many, many other extremely harsh environments.

For more information on our ratings:

NEMA Ratings Overview

UL Certifications Overview

UL Awards Type 4/4X/12 Certification to Hope Industrial Monitors and Touch Screens

 

2 Responses to “Environmental Ratings: Third-Party Certification vs. Self-Certification”

  1. Andrew August 7, 2011 at 1:11 pm #

    Thanks for the info — i always wondered about NEMA compliance. Is it the same for IP ratings?

    • Daniel J. McGraw August 8, 2011 at 9:20 am #

      Yes, IP ratings do work the same way. The International Electrotechnical Commission (IEC) publishes the IP rating standard, and any company can design to this standard and claim compliance without any 3rd party verification.

      IP ratings roughly correspond to NEMA ratings: NEMA standard 250-2003 contains a chart showing correlations between the two standards. So by testing to NEMA, we also get 3rd party confirmation of the IP equivalent.

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