ExEC
The role of CIMFR
CIMFR is a testing authority. It subjects a design to explosion, ingress and thermal tests defined by relevant standards.
The role of PESO
PESO approval requirements depend on the installation and the authority's jurisdiction. Review the current published procedure and the approval scope for the particular equipment and location.
What buyers should verify
Check the actual certificate, any required statutory approval, covered type numbers, complete Ex marking, validity and special conditions. A test report and an approval are distinct documents and do not establish suitability for every installation.