Introduction To Commissioning - Siemens SITRANS DS III Series Compact Operating Instructions

5 Commissioning
5.1 Basic safety instructions
DANGER
Toxic gases and liquids
Danger of poisoning when the device is vented.
If toxic process media are measured, toxic gases and liquids can be released when the device is vented.
● Before venting ensure that there are no toxic gases and liquids in the device. Take the appropriate safety measures.
WARNING
Improper commissioning in hazardous areas
Device failure or danger of explosion in hazardous areas.
● Do not commission the device until it has been mounted completely and connected in accordance with the information
in Chapter "Technical specifications (Page 36)".
● Before commissioning take the effect on other devices in the system into account.
WARNING
Opening device in energized state
Danger of explosion in areas subject to explosion hazard.
● Only open the device in a de-energized state.
● Check prior to commissioning that the cover, cover locks, and cable inlets are assembled in accordance with the
directives.
Exception: Devices having the type of protection "Intrinsic safety Ex i" may also be opened in energized state in hazardous
areas.
Note
Hot surfaces
Hot process medium and high ambient temperatures lead to hot surfaces which can cause burns.
● Take corresponding protective measures, for example wear protective gloves.
5.2

Introduction to commissioning

Following commissioning, the transmitter is immediately ready for use.
To obtain stable measured values, the transmitter needs to be allowed to warm up for five minutes or so after the power
supply is switched on.
The operating data must correspond to the values specified on the nameplate. If you switch on the auxiliary power, the
transmitter will operate.
The following commissioning cases are typical examples. Configurations different from those listed here may be meaningful
depending on the system configuration.
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SITRANS P, DS III series (7MF4.33.. 7MF4.34.. 7MF4.35..)
A5E03434656-02, 12/2012