KROHNE OPTIBAR PC 5060 C EN - Manual (Page 44)

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START-UP
44
OPTIBAR PC 5060 C
www.krohne.com 04/2014 - 4003437201 - MA OPTIBAR PC 5060 C R01 en
Sensor
mounting
correction
The mounting position of the device has a great impact on the measured value (offset), especially with
small measuring ranges and isolating systems. The position correction compensates for this offset.
The position correction can automatically take on the current measured value as correction value
(auto correct). Alternatively, this correction value can also be entered manually using the "Edit"
function. Once the position has been corrected, the measured value is corrected to 0. Position
correction can compensate for a maximum of 20% of the nominal measuring range.
Offset Input in adjustment unit, automatic transfer
of the current measured value
Adjustment Adjustment refers to setting the zero point (zero) and maximum measured value (span). These values
correspond to the values of 4 and 20 mA. If the adjustment ranges are exceeded, the message
"Outside parameter limits" is displayed.
Min.-adjustment / Zero Process pressure Process pressure Process pressure Process pressure
Zero in %, pressure
Level (standard 0%) Level (standard 0%) Level (standard 0%) Level (standard 0%)
Min. in X %, pressure or filling height
Max.-adjustment / Span Process pressure Process pressure Process pressure Process pressure
Span in %, pressure
Level (standard 100%) Level (standard 100%) Level (standard 100%) Level (standard 100%)
Min. in X %, pressure or filling height
Damping For the damping of process-dependent measured value fluctuations, you can choose a suitable
integration time. The values which can be entered are from 0 … 999 seconds with an increment of 0.1
seconds.
Integration time In 0.1 second increments
Linearization A linearization is necessary for all vessels in which the vessel volume does not increase linearly with
the level, e.g. in a horizontal cylindrical or spherical tank, and the indication or output of the volume is
required. Corresponding linearization curves are preprogrammed for these vessels. They represent
the correlation between the level percentage and vessel volume. By activating the appropriate curve,
the volume percentage of the vessel is displayed correctly. Enter the desired parameters using the
function buttons and save the entries. Note the following if the pressure transmitter with
corresponding approval is used as part of an overfill protection system according to WHG (Water
Resources Act): If a linearization curve is selected, the measuring signal is no longer linearly
proportional to the level. This must be taken into consideration by the user, particularly when setting
the switching point on the limit signal indicator.
Type of linearization Level Level Level Level
Linear, Horiz.cylinder, Sphere and User
programmable
Current output In the current output menu, the saturation region for above or below a threshold is set. Under
"Current output min./max." these limit values can be set. The factory setting is 3.8 mA and 20.5 mA.
This corresponds to the NAMUR recommendation NE 43.
Mode Output characteristic 0...100% = 4...20 mA or
0...100% = 20...4 mA
Failure mode ≤ 3.6 mA, ≥ 21 mA, last valid measured value
Min. and
Max.
Min. current 3.8 mA, 4 mA
Max. current 20.5 mA, 20 mA
Lock
adjustment /
Unlock
adjustment
In this menu item, a 4-digit PIN can be activated, which protects against undesirable or unintended
changes of the settings. With a PIN active, remote access via software or other systems is also no
longer possible.
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.book Page 44 Friday, May 2, 2014 12:49 PM