Hazardous Area Zone 1 & Zone 2 ATEX | Remote Control Units & Emergency Shutdown Stations

Product Overview

Remote Control Units

EXHEAT remote control units and emergency shutdown stations are designed to offer a local interface for equipment in the field, controlled by a remote source. These units can be manufactured for use in both hazardous and non-hazardous areas, having the control facility for on and emergency stop, with indications for on and fault status.

All products are supplied with full wiring schematics and hazardous area certification as required. Suitable cable gland kits can also be provided to ensure a one-stop cost effective solution. All units are provided with our standard warranty and are built and tested in our ISO 9001 certified UK factory, ensuring that EXHEAT’s unrivalled high standards are incorporated throughout all of our products.

Hazardous Area Classification

• ATEX / IECEx / GOST: Zone 1, 2, 21, 22
• NEC 505 Class 1: Zone 1, 2
• NEC 500: Class I Div 2; Class II Div 1, 2; Class III Div 1, 2

Ex d & Ex de flameproof concepts

Ex d – “Flameproof Enclosure” Protection EN 50018 where the potentially explosive or incendive components are contained within an enclosure into which the flammable atmosphere can enter but which will contain any resultant explosion and prevent its transmission outside the enclosure into the hazardous area. Ex de solutions combine the benefits of both the increased safety Ex e and flameproof Ex d types of protection.

hazardous area equipment protection levels

• G=gas, D=dust, M=mining
• *in presence of explosive atmospheres

hazardous areas & T CLASSes

Temperature class is defined by ignition temperature – the lowest temperature at which a vapour will be ignited.

Flashpoint is the lowest temperature at which a liquid generates sufficient vapour to support ignition – this vapour could be ignited by temperature or energy (i.e. a spark).

• there is no connection between ignition energy and ignition temperature

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