7MF4232
Operating Instructions
26
C79000-B5676-C92-01
Function
Mode
Key function
1)
Indicator explanations
Chapter
Function
Mode
1)
and
2)
Indicator, explanations
Chapter
Measured value
Output current in mA or % or input
pressure in engineering units
4.3.3.8
Error display
if transmitter is disturbed
4.3.3.6
Start of range
2
increase decrease
set to 4 mA
3)
Output current in mA
4.3.3.1
Full scale
3
increase decrease set to 20 mA
3)
Output current in mA
4.3.3.1
Electrical
damping
4
increase decrease
Time constant T
63
in s
Parameter range: 0 to 100.0
4.3.3.4
Start of scale
”blind calibration”
5
increase decrease
set to start of
scale 0
3)
Start of scale in the selected enginee-
ring units
4.3.3.2
Full scale
”blind calibration”
6
increase decrease
set to upper
measuring limit
0
3)
Full scale in the selected engineering
units
4.3.3.2
Set zero point at
vacuum
4)
”position
correction”
7
--
--
execute
Evacuation (< 1
0
/
00
of the span)
(start of scale remains unaffected)
measured value in engineering units
4.3.3.5
Loop check
function
8
increase decrease
initiate
Constant output current in mA
3.6 4.0 12.0 20.0 or 22.8
switch off by
--key
M
4.3.3.5
Output current
in error situation
9
toggles
between the
two values
Selected output current
possible: 22.8 or 3.6 mA
4.3.3.6
Disable pusbuttons
and/or functions
10
change
between the four
functions
= none
= all locked
= all locked except
start of range
= all locked except
Start of scale and full scale
4.3.3.7
--
11
--
Omitted (only differential pressure)
--
--
12
--
Omitted (only differential pressure)
--
Measured value
display
13
change
Engineering unit (input value) or out-
put current in mA or %
4.3.3.8
Engineering units
14
change
Engineering unit
4.3.3.9
1)
If a
appears in the Indicator, the transmitter parameters are protected against overwriting (see chapter 4.4, page 32) and the
keys are locked.
If a appears in the indicator the transmitter is in current transmitter mode or multidrop operation when operating with a PC/laptop
or HART
R
-Communicator.
The output current is independent of the applied pressure. The keys are locked.
2)
and
-keys pressed simultaneously for about 2 s, displayed value disappears, current value appears after about 2 s.
3)
If the character
appears at the left hand side of the display the range limits are exceeded.
4)
ATTENTION: The start of scale is at vacuum at absolute pressure transmitters. The zero adjustment in ventilated transmitters
leads to misadjustments!
Table 4.1
Functions of the SITRANS P transmitter
