FMC Technologies Proline Promass 83 E - Function Description

Issue/Rev. 0.2 (12/12) MN0M023 • Page 67
Device Functions Proline Promass 83 7 Block OUTPUTS
VALUE 20 mA
(4003)
Use this function to assign the 20 mA current a value.
The value can be higher or lower than the value assigned to 0/4 (function VALUE 0_4
mA (4002), see page 65). Positive and negative values are permissible, depending on the
measured variable in question (e.g. mass flow).
Example:
4 mA assigned value = 250 kg/h
20 mA assigned value = +750 kg/h
Calculated current value = 8 mA (at zero flow)
! Note!
Note that 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 RANGE EXCEEDED” appears.
User input:
5-digit floating-point number, with sign
Factory setting:
Depends on nominal diameter [kg/h] or 2 [kg/l] or 200 [°C]
! Note!
• The appropriate unit is taken from the following functions:
– UNIT MASS FLOW(0400)
– UNIT VOLUME FLOW(0402)
– UNIT CORRECTED VOLUME FLOW(0404)
– UNIT DENSITY(0420)
– UNIT REFERENCE DENSITY(0421)
– UNIT TEMPERATURE(0422)
(see page 17 till page 21).
• If the option BATCH UPWARDS or BATCH DOWNWARDS, (only possible with the
optional software package BATCHING) is selected in the function ASSIGN CURRENT
OUTPUT (4000), the value 20 mA is automatically specified in this function and
cannot be edited.
• The appropriate unit is taken from the function UNIT MASS FLOW (0400)
(see page 17).
• A description of the selection STANDARD in the function MEASURING MODE is
given on page 68.
" Caution!
It is very important to read and comply with the information in the function
VALUE 0_4 mA (under “A Caution”; Examples of parameter settings) on page 65.
Function description
OUTPUTS o CURRENT OUTPUT (1...3) o CONFIGURATION