Siemens SITRANS P500, Руководство по эксплуатации, Страница: 18 / 238

Safety information
2.4 Use in hazardous areas
SITRANS P500 with HART
18
Operating Instructions, 12/2014, A5E02344528-09
WARNING
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
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".
•
Do not swap device parts unless the manufacturer specifically ensures compatibility of
these parts.
WARNING
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
pressure transmitter, even during plant operation; the screws should then be tightened
again.
NOTICE
Electrostatic-sensitive devices
The device contains electrostatic-sensitive devices (ESD). ESD can be destroyed by
voltages far too low to be detected by humans. These voltages can occur if you simply
touch a component part or the electrical connections of a module without being
electrostatically discharged. The damage to a module caused by overvoltage cannot
normally be detected immediately; it only becomes apparent after a longer period of
operating time has elapsed.
Protective measures against the discharge of static electricity:
• Make sure that no power is applied.
•
Before working with modules, make sure that you discharge static from your body, for
example by touching a grounded object.
• Devices and tools used must be free of static charge.
•
Hold modules only by their edges.
• Do not touch connector pins or conductor tracks on a module with the ESD notice.