Siemens sitrans tr200, Operating Instructions Manual

Page: 10 / 78

General safety notes
2.4 Measures
SITRANS TR200/TR300
10
Operating Instructions, 04/2007, A5E01071992-01
2.4 Measures
For the sake of safety, the following precautions must be observed:
WARNING
"Intrinsically safe" protection type
"Intrinsically-safe" devices lose their certification as soon as they are operated on circuits
which do not correspond with the test certification valid in their country. The device's
protection level "ia" is reduced to "ib" when intrinsically safe electrical circuits with
protection level "ib" are connected.
Protection type "limited energy" nL (zone 2)
Devices with "limited energy" may be connected and disconnected while in operation.
Protection type "non-sparking" nA (zone 2)
Devices with "non-sparking" protection may only be connected and disconnected when off
circuit.
CAUTION
Electrostatic Sensitive Devices (ESD)
This device contains electrostatic sensitive devices. Electrostatic sensitive devices may be
destroyed by voltages that are undetectable to a human. Voltages of this kind occur as
soon as a component or an assembly is touched by a person who is not grounded against
static electricity. The damage to a module as a result of overvoltage cannot usually be
detected immediately. It may only become apparent after a long period of operation.
2.5 Laws and directives
The regulations of the test certification valid in your country are to be observed.
Electrical connection in hazardous zones with explosive atmospheres
The national directives and laws for hazardous areas valid in your country must be observed
for electrical connection. For example, in Germany these are:
●
Operational safety regulations
● Directive for the installation of electrical systems in hazardous areas DIN EN 60079-14
(previously VDE 0165, T1)