Watson-Marlow qdos H-FLO Reference Manual page 112

14.4.4.2 Control settings 4 – 20 mA output (Universal+ model
only)
The universal+ model only has a 4-20 mA output which can be configured. There are two
options
Scale
Full scale
Match input scale
1. Use +/- keys to highlight
2.
SELECT .
3. Use +/- keys to highlight required option.
Tick symbol
4. SELECT .
Explanation
4-20 mA output is based on pumps full speed range.
0 rpm
4 mA
4-20 mA output will scale to same range as 4-20 mA input.
Example: If the 4-20 mA input has been scaled to provide 4 mA=0
rpm and 20 mA=20 rpm then an input of 12 mA will result in a set
speed of 10 rpm and an output of 12 mA. This function will match
both the mA and the rpm scales.
4-20 mA
option
indicates current setting.
Maximum rpm
20 mA
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