Siemens SITRANS LR560 Operating Instructions Manual page 43

Commissioning
6.2 Activating the radar device
Hazardous contact voltage
Risk of injury through hazardous contact voltage when the device is open or not completely
closed.
The degree of protection specified on the nameplate or in Approvals data (Page 165) is no
longer guaranteed if the device is open or not properly closed.
• Make sure that the device is securely closed.
Toxic gases and liquids
Danger of poisoning when venting the device: if toxic process media are measured, toxic
gases and liquids can be released.
• Before venting ensure that there are no toxic gases or liquids in the device, or take the
appropriate safety measures.
Loss of explosion protection
Risk of explosion in hazardous areas if the device is open or not properly closed.
• Close the device as described in Installing/mounting (Page 23).
Hazardous gases in the enclosure
Risk of explosion.
Hazardous gases are gases that can explode and have a gas concentration of more than
25% of the lower explosion limit (LEL). Under normal ambient conditions the LEL is the risk
threshold when handling these gases. However, special operating conditions can lower the
potential risk from these gases under the LEL. A value of 25% of the LEL is regarded as
definitely safe.
• Do not introduce combustible or hazardous gases into a restricted breathing enclosure
(type of protection Ex nR).
42
WARNING
DANGER
WARNING
WARNING
SITRANS LR560 (mA/HART)
Operating Instructions, 06/2017, A5E34647946-AD