7ML19985JB02 SITRANS Probe LU (PROFIBUS PA) – INSTRUCTION MANUAL Page 79
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H: Parameters
2.3.3. Temperature Source
1
Determines the source of the temperature reading used for calculating speed of
sound. There are two options:
2.3.4. Fixed Temperature
1
(default 20
o
C)
Defines the fixed temperature (in degrees C) used for calculating speed of sound
(see above).
2.3.5. PROFIBUS Current Consumption
Allows you to select the PROFIBUS device current. Higher values allow faster
update rates.
2
Go to Input > Standard Setup > PROFIBUS Current Consumption, and enter the
value corresponding to the desired device current.
1.
This parameter cannot be reset to factory default settings.
Hand
programmer
values
Fixed Temperature (user-defined value: see below)
*
Automatic default value (recorded by sensor inside the trans-
ducer)
Values
Range, Degrees C
Warning: This parameter should be modified only once at installation, to match
the design criteria of the network.
Values Loop current
Update Time
2
0*
12 mA
6.0 s (typical), maximum 16.0 s
1
13 mA
5.0 s (typical), maximum 14.0 s
2
15 mA
3.7 s (typical), maximum 8.0 s
3
20 mA
2.4 s (typical), maximum 4.0 s
2.
Temperature dependent: typical values at +20 °C (+68 °F); maximum values at +80 ° C
(+176 °F).
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