Requirements For Special Applications; Use In Hazardous Areas - Siemens SITRANS LR250 Compact Operating Instructions

Safety information

2.3 Requirements for special applications

2.3 Requirements for special applications
Due to the large number of possible applications, each detail of the described device versions
for each possible scenario during commissioning, operation, maintenance or operation in
systems cannot be considered in the instructions. If you need additional information not
covered by these instructions, contact your local Siemens office or company representative.
Note
Operation under special ambient conditions
We highly recommend that you contact your Siemens representative or our application
department before you operate the device under special ambient conditions as can be
encountered in nuclear power plants or when the device is used for research and
development purposes.
2.4

Use in hazardous areas

Qualified personnel for hazardous area applications
Persons who install, connect, commission, operate, and service the device in a hazardous
area must have the following specific qualifications:
• They are authorized, trained or instructed in operating and maintaining devices and
systems according to the safety regulations for electrical circuits, high pressures,
aggressive, and hazardous media.
• They are authorized, trained, or instructed in carrying out work on electrical circuits for
hazardous systems.
• They are trained or instructed in maintenance and use of appropriate safety equipment
according to the pertinent safety regulations.
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.
14
WARNING
circuit.
SITRANS LR250 with FOUNDATION FIELDBUS
Compact Operating Instructions, 09/2021, A5E48453221-AB