ProMinent ProMix C, Руководство по эксплуатации

Страница: 29 / 59

Pr o Minent ProMix
‘S & C’ Polymer Feeder
ProMix Series S&C User Manual
2.11 Calibrate 4-20mA Output
Press ENTER & DOWN @ Polymer Pump
to calibrate the 4-20mA current loop output
that controls the pump feed rate
The present Polymer Pump control is 38.0%
But the on-pump display is @ 39.5%
Press ENTER to calibrate.
Key RIGHT to move the cursor &
UP or DOWN to change the digit.
Key EXIT to abandon or ENTER to execute.
The ProMix S reduces the pump 4-20mA current
So that the on-pump display will measure 38.0%.
Press EXIT to return to main menu.
Any adjustment takes effect immediately and modifies both
the 4-20mA output.
Sidebar:
‘Calibrate Iout’
matches the % display on the polymer feeder with the
polymer feed pump’s % display ( not all pump types display %, some display mA )
Note: 50% will not display 12mA after calibration. It will display the mA required for the pump
to display 50% which could be 11mA to 13mA Refer to 4.3 for 4-20mA reset.
Correction >10% bloc
ked, displays “
Advice >10% Adj.Error
”. Press
EXIT to clear.
Modifying Zero, <4%
At less than 4% the 4-20mA zero is modified to correct loop offset.
Example: Pump shows 0% and the ProMix S displays 1.5%.
Modifying Span, >6%
At more than 6% the 4-20mA span is modified to correct loop gain.
Example: Pump shows 52% and the ProMix S displays 50%