KROHNE OPTIBAR P 3050 C EN - Manual (Page 23)

OPERATION
5
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OPTIBAR P 3050 C
www.krohne.com 03/2012 - 4001953401 - MA OPTIBAR P3050C R02 en
Operation
5.1 Start-up
The pressure transmitter may only be started up after it has been completely installed and
checked by appropriately qualified personnel. Switch on the operating voltage for start-up. Prior
to applying the operating voltage, it is crucial to check the correctness of the process connection
and the electrical connection and ensure that the impulse line has been completely filled with
the process medium. Then proceed with start-up. If available, the shut-off fixtures are to be
activated in the following sequence (all valves are closed in the base setting):
• Open extraction shut-off valve, if any.
• Open shut-off valve, if any.
For shut-down reverse the order.
5.2 Factory settings and settings during reset
The pressure transmitter factory settings can be based on a measuring span specified by the
customer in the order. This and other information is located on the device nameplate. If the
customer has not specified any settings, the device always leaves the factory with the following
settings:
[*] only with optional LCD display
During a reset (which can be selected using the keyboard on the display), the pressure
transmitter is automatically started with the above factory settings.
For a factory reset without LCD display, push the push button on the converter electronics for
more than 30 seconds.
INFORMATION!
Please note that absolute pressure transmitters with measuring ranges ≤100 kPa abs. (1 bara)
were affected by the externally present atmospheric pressure during transport and storage. A
warm-up period of several hours following start-up is therefore required in order to reach the
specified accuracy.
Device parameter Factory pre-setting
Lower range limit (zero point) 4 mA
Upper range limit (URL) 20 mA
Alarm current High alarm 21 mA
Damping 0.1 s
Main display value [*] Pressure value in % URL
Sensor temperature [*] Indication in K
Write protection [*] No
Language [*] English
Contrast [*] 50%
Bargraph indication [*] Yes
.book Page 23 Thursday, March 8, 2012 9:29 AM