5
1. Introduction
Introduction:
Metering Pumps “VMS MF” Series are the ideal solution for low / middle dosing of chemicals. All control and setup parameters
are available through a digital keyboard and they are displayed on a LCD backlit display. Pump has “Level” input ,
Pump’s capacity
Flow rate is determined by the stroke speed (frequency) adjustment.
However dosing accuracy is guarantee within an adjustment range from 30% to 100%.
Working modes:
Pump can work in differents ways. See related chapters for extended description of each single mode.
CONSTANT mode.
Pump doses at a constant rate set in “SPH” (strokes for hour), “SPM” (strokes for
minute) or “LPH” (litres per hour) parameters set during program session.
DIVIDE mode.
External pulses from a water meter are divided by a value set during program
session. The pump doses with a rate determined by this parameter.
MULTIPLY mode.
External pulses from a water meter are multiplied by a value set during program
session. The pump doses with a rate determined by this parameter.
PPM mode.
Dosing rate is determined by pulses from a water meter on the base of set PPM,
chemical product concentration (%) and quantity for each single stroke set during
program session.
PERC mode
Dosing rate is determined by pulses from a water meter on the base of set PERC
(%), chemical product concentration (%) and quantity for each single stroke set
during program session.
MLQ mode
Dosing rate is determined by pulses from a water meter on the base of set MLQ
(milliliters per quintal), chemical product concentration (%) and quantity for each
single stroke set during program session.
BATCH mode.
Signal from an external contact starts the pump to dose the set quantity.
VOLT mode.
Voltage from an external device drives the pump that doses proportionally using a minimum and
maximum of strokes for minute set during program session
(0 ÷ 10 VDC)
.
mA mode.
Current from an external device drives the pump that doses proportionally using
a minimum and maximum of strokes for minute set during program session