Siemens SITRANS P DS III, Руководство по обслуживанию

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Connecting
4.1 Basic safety instructions
SITRANS P DS III
Service Manual, 06/2014, A5E34219855-01
25
WARNING
Incorrect selection of type of protection
Danger of explosion in areas subject to explosion hazard.
This device is approved for several types of protection.
1.
Decide in favor of one type of protection.
2. Connect the device in accordance with the selected type of protection.
3. In order to avoid incorrect use at a later point, make the types of protection that are not
used permanently unrecognizable on the nameplate.
NOTICE
Ambient temperature too high
Damage to cable sheath.
• At an ambient temperature ≥ 60 °C (140 °F), use heat-resistant cables suitable for an
ambient temperature at least 20 °C (68 °F) higher.
NOTICE
Incorrect measured values with incorrect grounding
The device must not be grounded via the "+" connection. It may otherwise malfunction and
be permanently damaged.
• If necessary, ground the device using the "-" connection.
Note
Electromagnetic compatibility (EMC)
You can use this device in industrial environments, households and small businesses.
For metal housings there is an increased electromagnetic compatibility compared to high-
frequency radiation. This protection can be increased by grounding the housing, see Chapter
"Connecting the device (Page 26)".