6
Description and function
EN Rivo™ I Controller
30
W3T597263 Issue 01-0624 | Evoqua Water Technologies GmbH
6.3 Ratio control
The ratio control of the Rivo™ Controller I is used exclu-
sively for quantity-proportional activation of dosing
devices.
Fig. 4 Ratio control
The dosing rate of the connected device is controlled pro-
portional to the flow in dependency on a measuring signal
(external flow control signal) and an adjustable dosing fac-
tor. It is possible to compensate for the non-linearity of the
dosing device via a maximum of 11 calibration points. The
display of the dosing quantity is freely configurable for the
specific system, with adjustable display format and unit.
Module equipment:
The electronics module required no additional modules.
Optionally, a relay module or mA output module can be
used to provide additional outputs.
Input signals:
• Flow measurement (0/4 to 20mA), scalable measure-
ment range with unit
The following dosing outputs are possible:
• Dosing pump
•Pulse pump
• Positioner with feedback 1kOhm / 5kOhm /
0 bis 10 V / mA signal
• Analog mA output (only with optional use of the
Rivo™ Flex Mod 2AO-mA)
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