Flowmax
44i 1. Planning information
M I B 5
1.3 Dosing function
Dosing can basically be realized in different ways:
1. Flowmax 44i as dosing device (dosing control via Flowmax 44i, for 8-Pin
option)
Flowmax 44i does the entire dosing control. The dosing quantity (e.g. 400
ml) is pre-set in the Flowmax 44i via the digital interface (RS485) with the
operating software. Dosing starts, as soon as line start of dosing is wired to
24 V, e.g. via a pushbutton. Flowmax 44i will now open the dosing valve via
the output configured for it. When the pre-set dosing quantity is reached,
the dosing valve is closed via the above output. The 2nd output can be
used independently for signalling of empty pipe detection, limit control or
flow direction.
2. Flowmax 44i as dosing device (dosing control via FlowSoft )
Flowmax 44i does the entire dosing control. The dosing quantity (e.g. 400
ml) is pre-set in the Flowmax 44i via the digital interface (RS485) with the
operating software. Dosing starts via the dosing-menu in the operating
software. Flowmax 44i will now open the dosing valve via the output
configured for it. When the pre-set dosing quantity is reached, the dosing
valve is closed via the above output.
3. Flowmax 44i as flow meter (dosing control via dosing equipment)
The dosing equipment is responsible for the entire dosing control.
Therefore, the dosing quantity is fixed in the dosing equipment control
during commissioning by pre-selecting the meter pulses. Dosing starts,
when the relevant pushbutton of the dosing equipment is pushed. The
control will now open the dosing valve. From now on Flowmax 44i will send
a voltage pulse to the control for each volume unit that has flown through
(e.g. per 1ml). When the pre-selected pulse quantity is reached, the control
closes the dosing valve. In this case, output 1 is used to send out pulses.
1.4 Operational safety
Comprehensive self-tests ensure highest possible operational safety.
The protection class is IP 67.
Flowmax 44i meets the general EMC immunity requirements according to CE,
EN 50081-2, and EN 50082-2.
Concerning the low voltage directive Flowmax 44i meets the safety
requirements according to EN 60601-1.
