Table 6-1 Operating Functions; Table 6-4 Operating Functions Via Keys - Siemens SITRANS P300 Operating Instructions Manual

Operation
6.5 Local operation
Operating functions
Notice
Zero point calibration
For absolute pressure transmitters, the zero point is at vacuum.
A zero point calibration with transmitters which do not measure absolute pressure leads to
faulty settings.
Table 6-4 Operating functions via keys
Function
Measured value
Zero point (only with
"Pressure"
measurement type)
Limit point (only with
"Pressure"
measurement type)
Electrical damping
Zero point in so-called
blind adjustment
Limit point in so-called
blind adjustment
Zero point calibration
(position correction)
Current sensor
Output current in case
of fault
6-10
Mode Key function
<MODE> <UP> <DOWN> <UP> and
The
modes
are
selected
here.
2 Current Current
higher lower
3 Current Current
higher lower
4 Damping Damping
higher lower
5 Pressure Pressure
higher lower
6 Pressure Pressure
higher lower
7 Correctio Correctio
n value n value
higher lower
8 Current Current
higher lower
9 Switching between
lower fault current
and upper fault
current.
Display, explanations
<DOWN>
The current measured value is displayed as
you have adjusted it in the "Measured value
display, mode 13" function.
Set to 4 mA Output current in mA
Set to 20 mA Output current in mA
Set to 0 Time constant T63 in seconds
Adjustment range: 0.0 s to 100.0 s
Setting zero Zero point in the selected pressure unit
point to 0
Setting limit Limit point in the selected pressure unit
point to upper
measuring
limit
Performing Pressurizing transmitter for gauge pressure
or level
Evacuating transmitter for absolute pressure
(< 0.1% of the span).
(Zero point remains unaffected)
Measured value in pressure unit
Switching on constant output current in mA
"3.6"; "4", "12", "20" or "22.8"
Switch off with the <MODE> key.
lower fault selected output current possible: Fault
current current limits adjusted by user
Operating Instructions, 06/2005, A5E00359579-02
SITRANS P300 with HART communication