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Hazardous location installation
October 2023
6
Hazardous location installation
Version 1.7
6.1
General installation requirements
The AMS EZ 1000 Converter and the safety-related variant of the converter labeled with
EZ1000-SIS are designed for the type of protection Ex ia as an intrinsically safe equipment
(according to IEC / EN 60079-11) and for the type of protection Ex ec as an increased
safety equipment (according to IEC / EN IEC 60079-7).
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 AMS EZ 1000 Converter.
Note
When operating the AMS EZ 1000 Converter in hazardous areas, observe the following
points for installation for type of protection ia and ec:
•
Operation is only permitted if the AMS EZ 1000 Converter 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 IEC / EN IEC 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
interface.
•
For the maximum environmental temperature of the EZ1xxx and PR 642x sensors
approved for temperature classes T2, T4, and T6 see
•
Install the AMS EZ 1000 Converter according to the control drawing CDG 5800-00182.
•
For the maximum environmental temperature of the AMS EZ 1000 Converter approved
for temperature classes T2, T4, and T6 see
•
The influence of power dissipation of other devices placed beside the AMS EZ 1000
Converter has to be taken into account with regard to temperature rise of the ambient
temperature of the AMS EZ 1000 Converter.
•
The AMS EZ 1000 Converter has to be installed and used in such a way that
electrostatic charging from operation, maintenance, or cleaning is excluded.
42
= 30 V is required for connection to the USB
m
Table
Table 6-1
to
Table
Operating Manual
MHM-97884
6-5.
6-3.
MHM-97884, Rev. 1.8
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