Hazardous location installation
[27]
6 Hazardous location installation
Topics covered in this chapter:
•
General installation requirements
•
Installation requirements – intrinsic safe
•
Installation requirements – non-sparking
•
Installation of the sensors
•
CSA – Special conditions of safe use
•
Technical data, explosion protection
•
Control drawings
•
Revision history
Version 1.3
6.1 General installation requirements
The EZ 1000 converter is designed for the type of protection Ex ia as an intrinsically safe
equipment (according to EN 60079-11) and for the type of protection Ex nA as a non-
sparking equipment (according to EN 600079-15).
The conditions of use are different, depending on the respective application. Observe the
points, listed in this section, for both types of protection.
Sensor and converter are allowed to be mounted within potentially explosive
atmospheres. The sensor is connected through a connector to the converter. The
converter must be mounted into a field housing.
Third party sensors can be connected, provided that it is permitted by the safety related
data of these sensors, and the safety related data of the EZ 1000 converter.
Note
When operating the EZ 1000 converter in hazardous areas, observe the following points for
installation for type of protection i and nA:
• Operation is only permitted if the EZ 1000 is mounted in appropriate field housings that
ensure that the converter and housing are not exposed to strokes or shocks and that friction
at the housing is avoided.
• The transition resistance of the field housing to the protective earth must not exceed 1
MOhm.
• If using a non-metallic field housing, the surface resistance of that housing must be in
accordance to EN 60079-0 7.4.
• Configuration of the converter through the USB interface is only permitted if no potentially
explosive atmosphere is present, and the environmental temperature is below 60°C.
• A battery powered device with U
m
<30 V is required for connection to the USB interface.
To Next Page
Loading...