Endress+Hauser Proline Prosonic Flow 93T Portable Operating Instructions Manual page 91

Proline Prosonic Flow 93T Portable
Endress+Hauser
Function group OPERATION
VALUE 20 mA
(4003)
Functional description
TOTALIZER TOTALIZER  OPERATION
Use this function to assign the 20 mA current a value. The value can be greater or less
than the value assigned to 0/4 mA, (function VALUE 0_4 mA (4002)). Positive and
negative values are permissible, depending on the measured variable in question
(e.g.).
The assignment applies for both flow directions for measuring mode SYMMETRY (see
Page 53) and only for the selected flow direction for measuring mode STANDARD.
Example:
4 mA assigned value = – 250 l/h
20 mA assigned value = +750 l/h
Calculated current value = 8 mA (at zero flow)
!
Note!
Values with different signs cannot be entered for 0/4 mA (function 4002) and 20 mA
if SYMMETRY is the setting selected in the function MEASURING MODE (4004). In
this case the message "INPUT AREA EXCEEDED" appears.
User input:
5-digit floating-point number, with sign
Factory setting
depends on the setting in the function ASSIGN CURRENT OUTPUT (4000):
volume flow: 20 l/s
sound velocity: 1800 m/s
flow velocity: 10 m/s
corresponds to the factory setting for the final value.
!
Note!
• The appropriate unit is taken from the function UNIT VOLUME FLOW (0402)
(see Page 13).
• For an example for STANDARD measuring mode see Page 50.
• If a channel is not visible, it does not appear in the options. Channels can be
displayed or hidden by means of the function MEASUREMENT (6880).
"
Caution!
It is very important to read and comply with the information in the function VALUE
0_4 mA (under "Caution"; Examples of parameterization) on  ä 100.
Description of Device Functions
91