MIB Flowmax 44i User manual

Flowmax44i
Ultrasonic flow
metering / dosing
device
Operating manual
BA 012E/FM44i/04.17
Valid starting from
Hardware V 2.1
Software V 1.29

Flowmax44i General safety instructions
M I B 2
General safety instructions
Please always observe the following safety instructions!
Please pay attention to the safety instructions with the following pictograms and
signal words in these operating instructions:
IMPORTANT! indicates situations or cases
which, if not avoided, could result in
damage or failure of the Flowmax 44i
equipment.
WARNING! indicates general hazardous
situations or cases which, if not avoided,
could result in serious injury or death.
NOTICE! is used to lead users to helpful
information not related to personal injury.
Intended use
The flowmeter Flowmax 44i may only be used for measuring the flow of
pure, homogeneous liquids.
The Flowmax 44i is not intended for use in medical applications.
The volume flowmeter Flowmax 44i is built operationally safe in
accordance with the latest state of the art technologized developments and
industry standard EN 61010 regulations (corresponds to VDE 0411 “Safety
specifications for electrical measurement, control and laboratory devices”).
The manufacturer is not liable for any injury, damage or harm due to
inappropriate or unintended use or modifications of the flowmeter.
Conversions and/or changes to the flowmeter may only be made, if they are
expressly performed in accordance with the operating instructions in this
operating manual.
Personnel for installation, commissioning and operation
Assembly, electrical installation, commissioning and maintenance of
the flowmeter must be carried out by qualified, trained personnel. The
qualified personnel must have read and understood the operating
instructions in this operating manual and must follow the operating
instructions in this manual.
The installer has to ensure that the flow meter is correctly connected
according to the electrical connection diagrams in this operating
manual.
Serious injury or death from electric shock may occur if wiring,
installation, disassembly or remove of wires is performed while
electrical power is energized
Technological progress
The manufacturer reserves the right to revise, alter, or modify the flowmeter to
the most current technology without special prior notice. Further information
about the latest updates and potential additions to these operating instructions
are available from the manufacturer.
IMPORTANT!
WARNING!
NOTICE!
WARNING!

Flowmax44i Tablet of contents
M I B 3
Tablet of contents
ULTRASONIC FLOW METERING/ DOSING DEVICE 1
General safety instructions 2
1. Planning information 4
1.1 Areas of application 4
1.2 Measuring principle 4
1.3 Operational safety 5
2 Assembly and installation 5
2.1 Installation instructions 5
2.2 Assembly of the flowmeter 6
2.3 Electrical wiring 9
3. Commissioning 13
3.1 Operation 13
3.2 Functionalities of flowmeter and default settings 16
3.2.1 Language 16
3.2.2 Dosing 16
3.2.3 Media 16
3.2.4 General Adjustment 19
3.2.5 Display 22
3.2.6 Analog Output QA 23
3.2.7 Digital Outputs Q1 and Q2 27
3.2.8 Digital Input I1 29
3.2.9 Diagnostic 29
3.3 Overview of default settings 30
3.4 General Information 30
4. Exchange of flowmeter 31
5. Technical specifications 32
5.1 Dimensions and weight 32
5.2 Technical specifications 34
6. Accessories 35
7. Shipment 35
Appendix Examples of operation 36
Table of figures
Fig. 1: Presentation of the principle of ultrasonic flow measuring 4
Fig. 2: Installation position of Flowmax 44i 5
Fig. 3: Mounting examples for Flowmax 44i 6
Fig. 4: Mounting possibilitis 7
Fig. 5: Fixing Flowmax 44i 7
Fig. 6: Flowmax 44i with hot media 8
Fig. 7: Pin code: Connection plug / socket for 5-pin version 9
Fig. 8: Pin code: Connection plug / socket for 8-pin version 11
Fig. 9: Pin code: Connection plug / socket for 8-pin version 12
Fig. 10: Operating with the key pad 14
Fig. 11: Menu strukture Flowmax 44i 15
Fig. 12: Function of creeping suppression illustrated with 0.6 l/min 17
Fig. 13: Function Lag Creeping Flow 18
Fig. 14: Function Hysteresis at limit 19
Fig. 15: The current output is aktive 23
Fig. 16: Characteristic curve 0 to 20mA 24
Fig. 17: Characteristic curve 4 to 20mA 24
Fig. 18: Function Filter of analog output 25
Fig. 19: Step response time of temperature measurement 26
Fig. 20: Connecting Digital Output to relay 28
Fig. 21: Connecting Digital Output to counter 28

Flowmax44i 1. Planning information
M I B 4
1. Planning information
1.1 Areas of application
The flow measurement device Flowmax 44i is designed to measure dynamic
flow in pipes and tubes. This flowmeter is suitable for liquids only. The Flowmax
44i is used in
Chemicals supply for controlling, logistics, monitoring
Cooling systems, logistics, monitoring
Process equipment for control and monitoring of formulas
Valve control for continuous release of liquid volumes
Supply with de-ionized water
Very dynamic liquid processes with dosing times of below 1 second
Flowmax 44i has the following features and benefits:
No movable parts, therefore no wear
High repeatability
Easy to clean
Safe operation
Compact design
Integrated detection of empty conduits
Integrated dosing function with pre-set and adjustable amounts
Chemical resistant
1.2 Measuring principle
It usually takes more energy to swim against the flow than with the flow. The
ultrasonic flow measurement is based on the phase-difference approach:
Two ultrasonic-sensors located opposite from each other alternatively
transmitting and receiving ultrasonic signals. If there is no liquid flow both
sensors receive the transmitted ultrasonic signals in the same phase, i.e.
without phase difference. If liquid is flowing there is a phase shift. It differs when
measured in direction of the flow than when measured against the direction of
the flow. This phase difference is directly proportional to the flow rate.
Fig. 1: Presentation of the principle of ultrasonic flow measuring

Flowmax44i 1. Planning information
M I B 5
1.3 Operational safety
Comprehensive self-tests ensure highest possible safety.
Faults (process or system errors) are output on a digital output or displayed on
the display menu.
The protection class is IP 67.
Flowmax 44i meets the general EMC immunity requirements according to CE,
EN 61000-6-3, EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5,
EN 61000-4-6.
Flowmax 44i meets the safety requirements concerning the Protective Extra
Low Voltage directive according to EN 50178, SELV, PELV.
2. Assembly and installation
2.1 Installation instructions
The housing of Flowmax 44i is labeled with an arrow symbolizing the direction
of the flow measurement. The flow meter has to be installed in a way so that the
flow-through is in the same direction as the arrow symbol.
TOP -> outlet
DOWN -> inlet
Fig. 2: Installation position of Flowmax 44i
For fastest possible bubble detection it is important to keep the pipe distance
from tank to Flowmax 44i as short as possible. Accurate measurement can only
be assured, if the pipe is completely filled and the liquid does not outgas.
Notwithstanding it may be advantageous for dosing applications to install the
Flowmax 44i as close as possible to the dosing valve, since soft pipes
increases the cross-section depending on the system pressure. This may lead
to repeatable differences.
Insure that no cavitations dissolve from the measured liquid. Depending on the
measured liquid it can be helpful to have enough back pressure on the outlet of
Flowmax 44i to avoid cavitations. Insure all mechanical connections are tight.
Absolutely do not use Teflon tape for sealing!
NOTICE!
NOTICE!

Flowmax44i 2. Assembly and installation
M I B 6
Particles present in the flow stream may result in measuring errors.
When using pumps, Flowmax 44i must be installed in flow direction on the
pressure side, on order to ensure sufficient pressure.
Do not exceed the maximum pressure allowance for of the Flowmax 44i
(see section 5.2 Technical specifications). Exceed the maximum pressure
or the maximum torque can lead to destruction or rupture of the Flowmax
44i.
For correct volume flow measurements straight and unobstructed inflow and
outflow distances have to be observed. Starting from the connection thread
these straight and unobstructed flow zones must be:
Nominal diameter
DN10
3/8”
DN15
1/2”
DN20
3/4”
DN25
1”
Inflow distance
10cm
3,94”
30cm
11,81”
40cm
15,75”
40cm
15,75”
Outflow distance
0cm
0”
5cm
1,97”
10cm
3,94”
20cm
7,87”
Always make sure that the maximum torque of the nuts for the hydraulic
connections is not exceeded. Use the delivered seals and the maximum torque
depending on the diameter:
Nominal diameter
DN10
3/8”
DN15
1/2"
DN20
3/4"
DN25
1”
Inch thread, torque:
2Nm
1.5 ft-lbs
3Nm
2.2 ft-lbs
4Nm
3.0 ft-lbs
6Nm
4.4 ft-lbs
2.2 Assembly of the flowmeter
The flowmeter is mounted into a pipe system by using the mechanical
connection. Flowmax 44i should be mounted vertically into the pipe for the best
measuring performance. Do not install the flowmeter after a dosing valve where
the flowmeter can run empty. Placing the flowmeter after a dosing valve and
allowing it to run empty will cause a measuring deviation at the next
measurement. To avoid bubbles in the liquid, Flowmax 44i should be installed
on the pressure side of the pump.
Fig. 3: Mounting examples for Flowmax 44i
NOTICE!
IMPORTANT!
WARNING!

Flowmax44i 2. Assembly and installation
M I B 7
If it is not possible to mount the flowmeter vertically, then mount the instrument
in a location where the pipe will be filled at all times. The best measuring result
is achieved if bubbles do not pass through Flowmax 44i.
Fig. 4: Mounting possibilities
For applications with a “clean design“ for which it is necessary to completely
drain the pipe system, we recommend mounting the flowmeter in the vertical
position. Residual liquid may remain inside the device if flowmeter is mounted
horizontally.
Vibrations or mechanical forces may decrease measuring accuracy.
Mounting the flowmeter using two clamps will reduce vibrations or movements.
Use the clamps as seen in the figure below at the inlet and outlet connections of
Flowmax 44i.
Fig. 5: Fixing Flowmax 44i
Important!
Flowmax 44i must be installed without mechanical tensions on the
existing pipe system. The flowmeter may be damaged if there is tension
on the existing pipe system. Set the axial channel offset to 5mm when
mounting the flowmeter (For details see section 5.1 Dimensions and
weight).
Warning!
Non-compliance of the installation instructions may result in tearing of the
housing, liquid may leak out.
WARNING!

Flowmax44i 2. Assembly and installation
M I B 8
Applications with hot liquids:
If Flowmax 44i is used in applications with liquid temperatures hotter than 60°C
and mounted horizontally then the flow meter should be mounted with the
electronic housing on the underside to reduce exposure to rising heat. If
Flowmax 44i is mounted vertically, heat damage is not an issue.
Fig. 6: Flowmax 44i with hot liquids
Warning!
Installation in metallic pipes in combination with high medium
temperatures
Note that the metal tube and the plastic housing of the measuring device have a
different expansion behavior! The resultant force acting on the meter forces can
cause the plastic housing of Flowmax 44i warps and the process connection
breaks off.
To ensure the mechanical stress-free mounting of Flowmax 44i, is on site to
ensure by appropriate measures that no forces can act on the plastic housing,
for example, a flexible metal hose or a strain curve.
IMPORTANT!
WARNING!

Flowmax44i 2. Assembly and installation
M I B 9
2.3 Electrical wiring
Serious injury or death from electric shock may occur if wiring,
installation, disassembly or remove of wires is performed while
electrical power is energized.
Always shut off or disconnect electrical power at service panel and
lock switch or breaker and tag to prevent energizing electrical power
during work or while Flowmax 44i is not assembled and installed.
Wiring installation, disassembly and removal must be performed by
qualified persons experienced and knowledgeable about electrical
work.
Fig. 7: Pin code: Connection plug / socket for 5-pin version
Connector cable pin configuration defined by manufacturer.
The outlets may be re-programmed for specific applications.
5-pin plug with 1-wire communication:
Pin
Function
Description
1
24 VDC
Voltage supply: 18...30 VDC
2
Pulse output Q1
alternative:
1. Empty-pipe output
2. Dosing output
3. Upper or Lower Limit-
output
4. Negative flow
Digital Output Q1
Freely adjustable ranging from 0.1 to 3000 ml/pulse
in 0.1 ml/pulse steps, npn-or pnp-transistor, max.
load 100mA.
Max. voltage must be less than the supply voltage
Configurable output of 0V or 24V when pipe is
empty.
Configurable output of 0V or 24V
Configurable output of 0V or 24V when reaching
upper or lower limit
Configurable output of 0V or 24V when liquid flows in
negative direction
3
GND
Ground: 0 V
4
Communication
Communication interface
5
Analog output QA
4....20mA; 0....20mA
Example: 0l/min => 4mA
36l/min => 20mA (depending on
diameter)
Empty pipe Alert => 3.5mA
WARNING!

Flowmax44i 2. Assembly and installation
M I B 10
5-pin plug with RS485 communication and current output:
Pin
Function
Description
1
24 VDC
Voltage Supply: 18...30 VDC
2
Communication
RS 485 B
3
GND
Ground: 0 V
4
Communication
RS 485 A
5
Analog output QA
4....20mA; 0....20mA
Example: 0l/min => 4mA
36l/min => 20mA (depending on
diameter)
Empty pipe Alert => 3.5mA
5-pin plug with RS 485 –communication and digital output Q1:
Pin
Function
Description
1
24 VDC
Voltage supply: 18...30 VDC
2
Pulse output Q1
alternative:
1. Empty-pipe output
2. Dosing output
3. Upper or Lower Limit-
output
4. Negative flow
Digital output Q1
Freely adjustable ranging from 0.1 to 3000 ml/pulse
in 0.1 ml/pulse steps, npn-or pnp-transistor, max.
load 100mA.
Max. voltage must be less than the supply voltage
Configurable output of 0V or 24V when pipe is
empty.
Configurable output of 0V or 24V
Configurable output of 0V or 24V when reaching
upper or lower limit
Configurable output of 0V or 24V when liquid flows
in negative direction.
3
GND
Ground: 0 V
4
Communication
RS 485 A
5
Communication
RS 485 B

Flowmax44i 2. Assembly and installation
M I B 11
8-pin plug with 1-wire communication:
Fig. 8: Pin code: Connection plug / socket for 8-pin version
Connector cable pin configuration defined by manufacturer.
The outlets may be re-programmed for specific applications.
Pin
Function
Description
1
24 VDC
Voltage supply: 18...30 VDC
2
Digital output Q1
Functions
1. Pulse output
2. Empty pipe output
3. Dosing output
4. Upper or Lower Limit
output
5. Negative flow
Digital output Q1
Configurable npn-or pnp transistor, max. load
100mA*.
Max. voltage must be less than the supply voltage
Freely adjustable ranging from 0.1 to 3000
ml/pulse in 0.1 ml/pulse steps,
Configurable output of 0V or 24V when pipe is
empty.
Configurable output of 0V or 24V
Configurable output of 0V or 24V when reaching
upper or lower limit
Configurable output of 0V or 24V when liquid flows
in negative direction.
3
GND
Ground: 0 V
4
Digital output Q2
Functions:
1. Empty pipe output
2. Dosing output
3. Pulse output
4. Upper or Lower Limit
output
5. Negative flow
Digital output Q2
Configurable npn- or pnp-transistor, max. load
100mA*.
Max. voltage must be less than the supply voltage
Configurable output of 0V or 24V when pipe is
empty.
Configurable output of 0V or 24V
Freely adjustable ranging from 0.1 to 3000
ml/pulse in 0.1 ml/pulse steps.
Configurable output of 0V or 24V when flow
reaches upper or lower limit.
Configurable output of 0V or 24V when liquid flows
in negative direction.
5
Analog output QA
4....20mA; 0....20mA
Example: 0l/min => 4mA
36l/min => 20mA (depending on
diameter
Empty pipe Alert => 3.5mA
6
Communication
Communication interface
7
Digital input I1
1. Dosing output
2. Set offset
3. Reset counter
4. Creeping flow off
Digital input I1
Starts the dosage by a rising edge of 24V.
The Offset is set by a rising edge of 24V.
Reset of the counter by a rising edge of 24V.
Creeping suppression is deactivated as long as
there are 24V at the input.
8
Shielding
EMC safety
*it applies: for Q1 + Q2 ≤ 100mA

Flowmax44i 2. Assembly and installation
M I B 12
8-pin plug with RS 485 communication:
Fig. 9: Pin code: Connection plug / socket for 8-pin version
Connector cable pin configuration defined by manufacturer.
The outlets may be re-programmed for specific applications.
Pin
Function
Description
1
24 VDC
Voltage supply: 18...30 VDC
2
Digital output Q1
Functions
1. Pulse output
2. Empty pipe output
3. Dosing output
4. Upper or Lower Limit
output
5. Negative flow
Digital output Q1
Configurable npn-or pnp transistor, max. load
100mA.
Max. voltage must be less than the supply voltage
Freely adjustable ranging from 0.1 to 3000
ml/pulse in 0.1 ml/pulse steps,
Configurable output of 0V or 24V when pipe is
empty.
Configurable output of 0V or 24V
Configurable output of 0V or 24V when reaching
upper or lower limit
Configurable output of 0V or 24V when liquid flows
in negative direction.
3
GND
Ground: 0 V
4
Digital input I1
1. Dosing output
2. Set offset
3. Reset counter
4. Creeping flow off
Digital input I1
Starts the dosage by a rising edge of 24V.
The Offset is set by a rising edge of 24V.
Reset of the counter by a rising edge of 24V.
Creeping suppression is deactivated as long as
there are 24V at the input.
5
Analog output QA
4....20mA; 0....20mA
Example: 0l/min => 4mA
36l/min => 20mA (depending on
diameter
Empty pipe Alert => 3.5mA
6
Communication
RS 485 A
7
Communication
RS 485 B
8
Shielding
EMC safety
Attention:
Only operate the flowmeter Flowmax44i within the operating limits
stipulated on the product label and the operating manual / data sheet.
Use of the Flowmax 44i outside these conditions will lead to overloads
which cause permanent damage.
IMPORTANT!

Flowmax44i 3. Commissioning
M I B 13
3. Commissioning
NOTE:
If Flowmax 44i is used for a fluid other than water the "basic trim" has to be
carried out during commissioning. Therefore the device has absolutely be filled
with medium.
The basic trim can be done on the device display (alternatively FlowCon).
During the adjustment the medium may not flow as it affects the function.
3.1 Operation
If Flowmax 44i is used as a volume flowmeter for water or water-like liquids it
will not require on-site calibration. Parameters for water are calibrated at the
factory. The Flowmax 44i may also be ordered with customized settings, but
customized settings must be requested when Flowmax 44i is ordered.
If necessary, e.g. if viscosity and/or speed of sound deviate significantly from
water, the pre-set parameters can be adjusted via the display or FlowCon. It is
always necessary to adjust the manufacturer pre-set parameters when using
the Flowmax 44i as a dosing device. Adjusting the manufacturer pre-set
parameters requires a display or FlowCon.
The following parameters may be changed to settings suitable for the
individual conditions: for 5-pin version
-Digital output Q1, function and behavior
-Analog output QA, function and behavior
-Flow range, for which shall apply 4...20 mA
-Pulse value
-Creeping suppression
-Optimization of measurement curve with up to 8 interpolation values
(medium matrix)
The following parameters may be changed to settings suitable for the
individual conditions: for 8-pin version
-Digital output Q1, function and behavior
-Digital output Q2, function and behavior
-Digital input I1, function and behavior
-Analog output QA, function and behavior
-Flow range, for which shall apply 4...20 mA
-Pulse value
-Creeping suppression
-Optimization of measurement curve with up to 8 interpolation values
(medium matrix)

Flowmax44i 3. Commissioning
M I B
14
Display and user menu
Flowmax 44i is equipped with a display to visualize actual measurement values
and to change parameters of the flowmeter. Menu navigation and parameter
changes are controlled by the four keys on the keypad.
Fig. 10: Operating with the key pad
Press the “Set” key to display the main menu. Different menu options can be
selected by using the two arrow keys.
To enter e.g. analog limits “Analog output – Upper limit” use the arrow keys to
change values and press “Set” to confirm. To switch back to the last menu level
press the “Esc” key. As soon as the operator tries to change values the user will
be prompted to enter a password. Password protection is used to ensure
changes to values or configurations are done by authorized personnel. The
default password for Flowmax 44i is 41414. The user level will remain active for
30 minutes after the last press on any button. 200 seconds after the last key
press, the device skips the menu and returns to the display mode, which does
not apply to the menu items diagnostic and dosing.
Operating examples see appendix.
The Password should only be shared with personnel authorized to make
changes to setting.
Note:
Always the actual set-activated menu parameters are shown in the display. The
activated parameter is displayed inverted.
Note:
In the menu all the possible functions of the instrument are visible
The functions of Digital Output Q2 and Digital Input I1 are only available on the
Flowmax version with 8-pin plug.
In the menu Analog Output there are displayed the output value functions PID -
Controller and Speed of Sound. They are provided only with functionality, if they
were considered in the order (optional).
Flowmax 44i without display has the same features as the display version, but
you can change parameters only via the display or programming unit FlowCon.
IMPORTANT!
NOTICE!
NOTICE!

Flowmax44i 3. Commissioning
M I B
15
Fig. 11: Menu structure Flowmax 44i

Flowmax44i 3. Commissioning
M I B
16
3.2 Functionalities of flowmeter and default settings
3.2.1 Language
The language of the display can be changed. Available languages are English,
Spanish, French and German.
3.2.2 Dosing
The Flowmax 44i can be configured for manually dosing by choosing the dosing
function via the user display. The Volume “Dosing Quantity“ and the “Dosing
Time“ are freely adjustable. The dosing time is intended as a safeguard against
unintentional overspill. When “Dosing Time“ is set to zero, the timer control is
inactive. A dosage can be started and stopped with the menu function keys
“Start“ and “Stop“.
Setting range “Dosing Quantity”: 0 –3500 Liters, in steps of 0.001 L
Default setting “Dosing Quantity”: 0 Liters
Setting range “Dosing Time” 0 –30000 Seconds, in steps of 0.1 sec,
having an accuracy of +0/-1
Default setting “Dosing Time”: 3 Seconds
Important!
If Dosing Time =0 the time switch-off is inactive.
Example:
Dosing time = 3 seconds. That is Flowmax is sending the closing signal after
2.1 to 3.0 sec to the valve. The dosing time is designed as a security feature.
An exact dosage purely on the dosing time is not useful.
Warning!
The customer has to provide a technical solution for overfill protection
and an emergency stop switch. Both functions must run for safety to
valve closure.
3.2.3 Media
Set Offset
In the sub menu “Set Offset” it is possible to set the actual offset of the
flowmeter. Use this function only when Flowmax 44i is completely filled with
liquid, and there is no flow. If the offset is set while flow is present or when the
pipe is empty it will cause an offset drift what results in a faulty measurement.
Example of operation see appendix.
A small offset change, e.g. caused by variable temperatures, is automatically
done by the flowmeter. It is also possible to set the offset via the configurable
digital inputs.
1-Pt-Correction
Setting range: -50.0...50.0 % in steps of 0.1%
Default setting: 0 %
Example of operation see appendix.
IMPORTANT!
WARNING!

Flowmax44i 3. Commissioning
M I B
17
Creeping suppression
The creeping suppression excludes flow measurements that result from
convection in a narrow band around zero, even with a closed valve. At the
factory, the creeping suppression is set at a standard value in relation to the
cross-section of the flowmeter. Changes to a smaller value of the parameter may
cause an offset drift what results in a faulty measurement.
There are higher tolerances below the standard default settings, see also section
5.2 measurement errors!
Creeping suppression works with a hysteresis of - 25%.
Fig. 12: Function of creeping suppression illustrated with 0.6 l/min
Example: Creeping suppression = 0.6 l/min
If the flow rate is lower than 0.45 l/min the pulse output/analog
output becomes inactive. If the flow rate exceeds 0.6 l/min a pulse is
output again and added to the totalizer. Similarly, a value is
transmitted to the analog output again.
Setting range: 0.0...20 l/min, in 0.006 l/min steps
Default settings: 0.3 l/min for DN10
0.9 l/min for DN15
3.5 l/min for DN20
5.0 l/min for DN25

Flowmax44i 3. Commissioning
M I B
18
Lag Creeping Flow
The activation of the creeping suppression can be delayed. The value is
adjustable via menu.
Fig. 13: Function Lag Creeping Flow
Setting range: 0...99.9 s in steps of 0.1 s
Default settings: 0.5s
Basic Trim
The “Basic Trim” function insures that the flowmeter is conforming to the media
specific characteristics. To execute this function, Flowmax 44i runs a self-
diagnostic function which optimizes all important parameters. This process lasts
approximately 1 minute.
Important!
To make sure the basic trim is correctly done, the flowmeter has to be filled with
liquid without a flow.
When there is an error detected while performing the basic trim function, the
display shows “Error”. After successfully finishing the basic trim function, the
display will show “Done”.
Water
In this menu item, the correction values of the media matrix, previously
entered with FlowSoft are written back to the water value.
0
5
10
15
20
25
30
35
40
45
0 1 2 3 4 5 6 7 8 9 10 11 12
Flow [ml/s]
Time [s]
Function Lag Creeping Flow
Example 2 Seconds Schleichmenge
Schleichmenge x 0,75
Fluss ohne Schleichmenge
Fluss ohne
Schleichmengeverzögerung
Fluss mit Schleichmenge 2s
Verzögerung
Creeping Suppression
Creeping Suppression
x 0.75
Flow without
Creeping Suppression
Flow without
Lag Creeping Flow
Flow with 2 sec
Lag Creeping Flow
NOTICE!
IMPORTANT!

Flowmax44i 3. Commissioning
M I B
19
3.2.4 General Adjustment
Reset Counter
The volume counter of Flowmax 44i can be reset.
Example of operation see appendix.
Important!
Once reset, counter values cannot be restored. After a reset the counter works
normally.
Hysteresis
The limit values can be provided with a hysteresis. This is to avoid frequent
switching of the outputs when the flow moved to a limit around.
Fig. 14: Function Hysteresis at limit
Setting range: 0 to 8000ml/s in steps of 0.01 ml/s.
Default settings: 0
Lower Limit
Here, the lower limit for the digital output is set.
Setting range: 0 to 8000ml/s in steps of 0.01 ml/s.
Default settings: 0
0
50
100
150
200
0 1 2 3 4 5 6 7 8 9 10 11
Flow [ml/s]
Time [s]
Upper Limit=110ml/s Hysteresis=20 ml/s Filter=Off Obergrenze
110 [ml/s]
Obergrenze -
Hysteresis
90 [ml/s]
Obergrenze +
Hysteresis
130 [ml/s]
Fluss Filter
[ml/s]
0
50
100
150
200
0 1 2 3 4 5 6 7 8 9 10 11
Flow [ml/s]
Time [s]
Upper Limit=110 ml/s Hysteresis=20 ml/s Filter=medium (3s) Obergrenze
110 [ml/s]
Obergrenze -
Hysteresis
90 [ml/s]
Obergrenze +
Hysteresis
130 [ml/s]
Fluss Filter [ml/s]
Digital Ausgang =
Obergrenze
24V schliesser
0
20
40
60
80
100
0 1 2 3 4 5 6 7 8 9 10 11
Flow [ml/s]
Time [s]
Lower Limit=60ml/s Hysteresis=15 ml/s Filter=Off Untergrenze
60 [ml/s]
Untergrenze -
Hysteresis
45 [ml/s]
Untergrenze +
Hysteresis
75 [ml/s]
Fluss Filter [ml/s]
Digital Ausgang =
Untergrenze
24V schliesser
IMPORTANT!
Upperlimit –
Hysteresis
90 [ml/s]
Upperlimit
110 [ml/s]
Upperlimit –
Hysteresis
90 [ml/s]
Lowerlimit –
Hysteresis
45 [ml/s]
Upperlimit
110 [ml/s]
Lowerlimit
60 [ml/s]
Upperlimit +
Hysteresis
130 [ml/s]
Flow filter
[ml/s]
Upperlimit +
Hysteresis
130 [ml/s]
Flow filter
[ml/s]
Digital Output =
Upperlimit
24V normal open
Lowerlimit +
Hysteresis
75 [ml/s]
Flow filter
[ml/s]
Digital Output =
Lowerlimit
24V normal open

Flowmax44i 3. Commissioning
M I B
20
Upper Limit
Here, the lower limit for the digital output is set.
Setting range: 0 to 8000ml/s in steps of 0.01 ml/s.
Default settings: max. Flow of the flowmeter (depending on the diameter)
DN10 = 350 ml/s
DN15 = 600 ml/s
DN20 = 1000 ml/s
DN25 = 4000 ml/s
Pulse value
The pulse value determines the flow volumes for which an output pulse will be
emitted.
Choose a configuration which will neither exceed the maximum output
frequency of the Flowmax 44i (10kHz) nor the maximum input frequency of the
control. If the maximum frequency is exceeded the Flowmax 44i will not output
pulses correctly.
Example: 2.0 ml/Pulse
This means: a pulse is emitted every 2.0 ml.
Setting range: 0.1...3000.0 ml/Pulse, in steps of 0.1 ml/Pulse
Default setting: 1.0 ml/Pulse
Flow
Pulse value
Frequency
Period
Duration of the pulse
ml/s
ml/Pulse
Hz
s
s
ms
1
1
1
1
0,5
500
100
1
100
0,01
0,005
5
1000
0,1
10000
0,0001
0,00005
0,05
100
10
10
0,1
0,05
50
0,5
10
0,05
20
1
1000
In the last case every 20 seconds, a pulse of 1 second duration is put out.
Total Counter
The Total Counter can be displayed in the menu. The unit is fixed to m³. This
counter is unidirectional and can therefore differ from the daily counters.
The Total Counter can not be set to zero!