Barcon LHC/PPC (HART)
Commissioning
D
a
te of Is
s
u
e
2
5.10.2001
25
4
Commissioning
Contents
This section contains the following information:
•
On-site commissioning using keys on the electronic insert
•
Commissioning and operation using remote communication (Universal
HART Communicator handheld terminal or PACTware)
•
Locking and unlocking the measuring point
•
Information on the measuring point
4.1
On-site commissioning
Preparatory work
•
Wire up the Barcon (see chapter 2.5 "Electrical connection")
•
Connect a multimeter (4 mA … 20 mA) to the connection terminals
provided.
•
Ensure that a pressure can be generated within the required measuring
range.
Damping
The damping
t
affects the speed with which the output signal and the digital display
react to changes in pressure.
A switch on the electronic insert is used for calibrating the damping:
•
Switch position
off
: Damping 0 s
•
Switch position
on
: Damping 2 s
Fig. 4.1: Position of the damping switch
Fig. 4.2: Position of keys for calibrating zero point and measuring span
Zero point adjustment
Zero point calibration is carried out using the key for zero point adjustment (Zero).
Carry out the measuring span adjustment as follows:
•
Enter exactly the pressure for the lower range value.
•
Press the Zero key twice.
The acting pressure is adopted as the zero point.
By pressing the Zero key once the value can be called up if a digital display
is connected.
Adjusting the
measuring span
The measuring span is adjusted using the key for calibrating the measuring span
(Span). Carry out the measuring span adjustment as follows:
•
Enter exactly the pressure for the upper range value.
•
Press the Span key twice.
The acting pressure for the measuring span is adopted.
By pressing the Span key once the value can be called up if a digital display
is connected.
1
2
3
Zero
Damping
on
off
Span
Damping switch
1
2
3
Zero
Damping
on
off
Span
Key for calibrating
the zero point
Key for calibrating
the measuring span
