BS EN 60079-25. Explosive atmospheres - Part 25. Intrinsically safe electrical systems

duct-air heaters of a rated heat input not more than 70kW

The object of this standard is to investigate the effect of high humidity at constant temperature without condensation on a specimen over a prescribed period

motors and the functioning of mechanical components (i

operating temperature 175 °C (or 125 °C) continuous

9 bar (vacuum) to 10 bar (see Table 1)

Who is BS EN 4136 - Bi-hexagonal head bolts for

) are not detected by the method under ISO 5834-4

NOTE This is the first of a planned multi-part series of International Standards for rope access

and helps users with theory and calculations

NOTE 2 For test piece geometries other than those shown in 7

It does not cover burners intended for use in heating appliances

This basic safety publication is intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and ISO/IEC Guide 51