CAUTION
Increased sound pressure level
Changes to the sound absorber of the positioner or the mounting of pneumatic components
or pneumatic options on the positioner can cause a sound pressure with a level of 80 dBA to
be exceeded.
● Wear suitable hearing protection to protect yourself against hearing damage.
When operating the positioner with natural gas, you must follow and adhere to the following
safety notes:
WARNING
Operation with natural gas
1. Only positioners and option modules which are connected to power supplies with type of
protection "Intrinsic safety, protection level [ia]" may be operated with natural gas.
2. Do not operate the positioner with natural gas in closed spaces.
3. Natural gas is continuously blown off, depending on the model. Special care must therefore
be taken during maintenance activities near the positioner. Always ensure that the
immediate surroundings of the positioner are adequately ventilated.
The maximum values for ventilation are listed in section "Technical data for natural gas as
actuator medium (Page 289)".
4. If you operate the positioner with natural gas, it is not permitted to use Mechanic Limit
Switches (MLS).
5. Depressurize the devices operated with natural gas adequately during maintenance
activities. Open the cover in an explosion-free atmosphere and depressurize the device for
at least two minutes.
Note
Quality of natural gas
Only use natural gas which is clean, dry and free from additives.
7.2 Overview
Note
● During the initialization process, the operating pressure must be at least one bar more than
that required to close or open the valve. However, the operating pressure should not be
greater than the maximum permissible operating pressure for the actuator.
Commissioning
7.2 Overview
SIPART PS2 with PROFIBUS PA
Operating Instructions, 05/2019, A5E00127926-AC 109
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