Siemens SITRANS P DS III Operating Instructions Manual page 18

Safety information
2.4 Use in hazardous areas
Loss of safety of device with type of protection "Intrinsic safety Ex i"
If the device has already been operated in non-intrinsically safe circuits or the electrical
specifications have not been observed, the safety of the device is no longer ensured for use
in hazardous areas. There is a danger of explosion.
• Connect the device with type of protection "Intrinsic safety" solely to an intrinsically safe
• Observe the specifications for the electrical data on the certificate and in Chapter
Use of incorrect device parts in potentially explosive environments
Devices and their associated device parts are either approved for different types of
protection or they do not have explosion protection. There is a danger of explosion if device
parts (such as covers) are used for devices with explosion protection that are not expressly
suited for this type of protection. If you do not adhere to these guidelines, the test
certificates and the manufacturer warranty will become null and void.
• Use only device parts that have been approved for the respective type of protection in
• Do not swap device parts unless the manufacturer specifically ensures compatibility of
Risk of explosion due to electrostatic charge
To prevent the build-up of an electrostatic charge in a hazardous area, the key cover must
be closed during operation and the screws tightened.
The key cover may be opened temporarily at any time for the purposes of operating the
transmitter, even during plant operation; the screws should then be tightened again.
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WARNING
circuit.
"Technical data (Page 191)".
WARNING
the potentially explosive environment. Covers that are not suited for the "explosion-
proof" type of protection are identified as such by a notice label attached to the inside of
the cover with "Not Ex d Not SIL".
these parts.
WARNING
SITRANS P DS III with PROFIBUS PA
Operating Instructions, 06/2013, A5E00053276-07