PR electronics 7501 Manuel De Produit page 53

LERBAKKEN 10, 8410 RØNDE DENMARK.
Ex d, tb installation
The transmitter is intended, either to be connected via a cable, or to be mounted directly onto a temperature
sensing probe.
Only IECEx equipment certified sensors, suitable for the application and correctly installed, may be mounted
directly onto the Transmitter without additional certification of the combination.
If the transmitter is physically connected to a possible source of heating or cooling, e.g. by mounting to a
process pipe or a temperature sensor, the temperature at the point of connection shall be within the ambient
temperature range as given in the certificate. The sensor shall be suitable for use as entry device on an Ex d
enclosure and shall not add volume to the 7501 enclosure. The thread of the sensor must be in compliance
with IEC60079-1/IEC60079-31
Unused cable entries must be sealed by the blanking elements 8550-xxx and 8551-xxx supplied with the
7501 or other Ex d and/or Ex tb certified blanking elements suitable for the application.
Only Ex d and/or Ex tb certified cable and cable glands shall be used that are suitable for the application and
correctly installed.
Protection degree of IP 54 according to IEC 60529 is achieved if Ex d certified cable glands or conduit entry
devices are used that are suitable for the application and correctly installed.
Protection degree of IP 68 according to IEC 60529 is only achieved if Ex d certified cable glands or conduit
entry devices are used that are suitable for the application and correctly installed with sealing washers or
Loctite sealant added to the threads of the sensor, blanking elements and cable glands.
The display cover must be screwed all the way in and the safety catch must be fastened before putting into
service. Do not open display cover until 30 minutes after disconnecting power to the equipment allowing
internal capacitors to discharge, or do not open display cover unless area is known to be safe
For an ambient temperature exceeding 70 °C, heat resistant cables and cable glands suitable for at least
90°C shall be used.
The enclosure must be connected to the potential matching line.
When the process temperature range exceeds the service temperature range it shall be verified by on-site
temperature measurements, taking the worst case conditions into account, that the service temperature does
not exceed the range of the module.
For group III (dust), electrostatic charging of the paint layer shall be avoided
No modification to the enclosure is allowed by the customer except as mentioned in the manual or
installation drawing.
Revision date:
2015-09-16
Version Revision
V2R0
7501V108-FR
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7501QI01
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