ProMinent ProMix C, Operating Instructions Manual

Page: 26 / 59

Pr o Minent ProMix
‘S & C’ Polymer Feeder
ProMix Series S&C User Manual
2.9 Scale the 4-20mA Input
Press ENTER @ 4-20 mA Input
to navigate the input current loop sub-menu
See the previous page for calibrating the 4-20 mA input loop
Press DOWN to view the present 4 mA pump feed
percentage.
The factory default is as displayed. When the 4-20 mA input
is at 4.0 mA the pump will be OFF.
Press DOWN to view the present 20 mA pump feed
percentage.
The factory default is as displayed. When the 4-20 mA input
is at 20.0 mA the pump will be 100%.
Press DOWN to view the response when the input current
loop is less than 4.0 mA.
The factory default is as displayed. When the 4-20 mA input
is less than 4.0 mA the pump will be OFF.
Press ENTER at any of the four sub-menu displays to
modify the present setting.
Press EXIT to leave unchanged.
Sidebar:
Calibration of the 4-20 mA input ensures that the measured value of the 4-20 mA Input is
displayed as the correct mA level.
Scaling the 4-20 mA input is required when you do not want 4-20 mA to correspond to a 0-
100% polymer feed rate.
Selecting a different response than Pump OFF on loss of the 4-20 mA input allows for a wider
range of site operational configurations & control loop reliability.