Safety devices required for the safe functioning of equipment with respect to explosion risks algolia-ignore NOTE 2 Arrows indicate load

NOTE 2 Arrows indicate load direction

The procedure and apparatus for the test carried out for the air cleanliness classes by particle concentration and for macroparticles are provided in BS EN ISO 14644-1 and specifications for monitoring air cleanliness by nanoscale particle concentrations are provided in BS EN ISO 14644-12

cost-effective solutions for the safety of those who work at height

test and reference arrangements and measurements for connectors according to IEC 60603‑7 – Tests 26a to 26g** -26-100 none 27a/g** Signal integrity tests up to 500 MHz -27-1 to 27-7* none 27-100 Signal integrity tests up to 500 MHz on IEC 60603‑7 series connectors – Tests 27a to 27g** -27-100* none 28-100 Signal integrity tests up to 1000 MHz on 60603-7 and 61076-3 series connectors – Tests 28a to 28g** -28-100* none 29-100 Signal integrity tests up to 500 MHz on M12 style connectors - Tests 29a to 29g**

as defined in IEC 61291-1:

Safety devices required for the safe functioning of equipment with respect to explosion risks algolia-ignore NOTE 2 Arrows indicate load1 Scope This European Standard specifies the requirements of electrical safety devices, which are used to avoid potential ignition sources of equipment in explosive atmospheres. This also includes safety devices, which are operated outside areas with explosive atmospheres, to guarantee the safe function of equipment with respect to explosion hazards. NOTE 1 This European Standard can also be used to design and assess safety devices for protective