MIB Flowmax 54i User manual

Flowmax

54i
Ultrasonic flow
metering / dosing
device
Operating manual
BA 007E/FM54i/01.21
Valid starting from
Hardware V 2.1
Software V 1.29

General safety instructions Flowmax

54i
2 M I B
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 42i 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 54i may only be used for measuring the flow of
pure, homogeneous liquids.
•The Flowmax 54i is not intended for use in medical applications.
•The volume flowmeter Flowmax 54i 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 flowmeter 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

54i Contents
M I B 3
Contents
General safety instructions.......................................................................................................... 2
Contents........................................................................................................................................ 3
List of figures................................................................................................................................ 4
1. Planning information............................................................................................................. 5
1.1 Areas of application.................................................................................................................................. 5
1.2 Measuring principle .................................................................................................................................. 5
1.3 Operational safety .................................................................................................................................... 6
2. Assembly and installation..................................................................................................... 7
2.1 Installation instructions............................................................................................................................. 7
2.2 Assembly of the flowmeter ....................................................................................................................... 8
2.3 Electrical wiring ...................................................................................................................................... 10
3. Commissioning.................................................................................................................... 14
3.1 Operating ............................................................................................................................................... 14
3.1.1 Display and user menu ................................................................................................................... 15
3.2 Functionalities of flowmeter and default settings ................................................................................... 18
3.2.1 Language ........................................................................................................................................ 18
3.2.2 Dosing ............................................................................................................................................. 18
3.2.3 Media............................................................................................................................................... 19
3.2.3.1 Set Offset ................................................................................................................................. 19
3.2.3.2 1-Pt-Correction......................................................................................................................... 19
3.2.3.3 Creeping suppression .............................................................................................................. 19
3.2.3.4 Basic Trim ................................................................................................................................ 20
3.2.4 General Settings ............................................................................................................................. 21
3.2.4.1 Reset Counter .......................................................................................................................... 21
3.2.4.2 Empty pipe delay...................................................................................................................... 21
3.2.4.3 Hysteresis ................................................................................................................................ 21
3.2.4.4 Lower Limit............................................................................................................................... 22
3.2.4.5 Upper Limit............................................................................................................................... 22
3.2.4.6 Pulse value............................................................................................................................... 23
3.2.4.7 Total Counter ........................................................................................................................... 23
3.2.4.8 Counter .................................................................................................................................... 23
3.2.5 Display ............................................................................................................................................ 24
3.2.5.1 Units ......................................................................................................................................... 24
3.2.5.2 Filter for Display ....................................................................................................................... 24
3.2.5.3 Rotate Display.......................................................................................................................... 24
3.2.5.4 Flashing.................................................................................................................................... 25
3.2.6 Analog Output QA ........................................................................................................................... 25
3.2.6.1 Function ................................................................................................................................... 25
3.2.6.2 Filter ......................................................................................................................................... 27
3.2.6.3 Output Value ............................................................................................................................ 27
3.2.7 Digital Output Q1 and Q2 (Q2 only with 8-pol pin plug!)................................................................. 28

List of figures Flowmax

54i
4 M I B
3.2.8 Digital Input I1 (Only available with 8-pol pin plug)......................................................................... 31
3.2.9 Diagnostic ....................................................................................................................................... 31
3.2.9.1 Testing Flow............................................................................................................................. 31
3.3 Overview of default settings................................................................................................................... 32
3.4 General Information ............................................................................................................................... 32
4. Exchange of flowmeter ....................................................................................................... 33
5. Technical specifications ..................................................................................................... 34
5.1 Dimensions and weight of the compact version .................................................................................... 34
5.2 Technical specifications ......................................................................................................................... 35
6. Accessories ......................................................................................................................... 38
7. Shipment.............................................................................................................................. 38
Appendix ..................................................................................................................................... 39
List of figures
Figure 1: Presentation of the principle of ultrasonic flow measuring ................................................................. 5
Figure 2: ideal installation position of Flowmax 54i ........................................................................................... 7
Figure 3: Mounting examples for Flowmax 54i .................................................................................................. 8
Figure 4: Mounting possibilities.......................................................................................................................... 9
Figure 5: Pin code: Connection plug / socket for 5-pin version ............................................................. 10
Figure 6: Pin code: Connection plug / socket for 8-pin version ............................................................. 12
Figure 7: Pin code: Connection plug / socket for 8-pin version ............................................................. 13
Figure 8: Operating with the key pad ............................................................................................................... 15
Figure 9: Menu structure Flowmax 54i............................................................................................................. 17
Figure 10: Function of creeping suppression illustrated with 0.6 l/min ............................................................19
Figure 11: Function Lag Creeping Flow at 15l/min .......................................................................................... 20
Figure 12: Function Hysteresusis at limit ......................................................................................................... 22
Figure 13: The current output is active ............................................................................................................ 25
Figure 14: Characteristic curve 0 … 20mA...................................................................................................... 26
Figure 15: Characteristic curve 4 … 20mA...................................................................................................... 26
Figure 16: Function Filter of analog output ...................................................................................................... 27
Figure 17: Connecting Digital Output to relay.................................................................................................. 30
Figure 18: Connecting Digital Output to counter.............................................................................................. 30

Flowmax

54i Planning information
M I B 5
1. Planning information
1.1 Areas of application
The flow measurement device Flowmax 54i is designed to measure dynamic flow
in pipes and tubes. This flowmeter is suitable for liquids only. The Flowmax 54i 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 54i 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
•Constant pipe cross-section over the entire measurement channel
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.
Figure 1: Presentation of the principle of ultrasonic flow measuring

Planning information Flowmax

54i
6 M I B
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 65.
Flowmax 54i 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 54i meets the safety requirements concerning the Protective Extra Low
Voltage directive according to EN 50178, SELV, PELV.

Flowmax

54i Assembly and installation
M I B 7
2. Assembly and installation
2.1 Installation instructions
The arrow on the nameplate of the Flowmax 54i shows the positive flow direction.
The flowmeter has to be installed in a way so that the flow-through is in the same
direction as the arrow symbol.
Figure 2: ideal installation position of Flowmax 54i
For fastest possible bubble detection it is important to keep the pipe distance from
tank to Flowmax 54i 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 54i as close as possible to the dosing valve, as soft pipes change the
cross-section depending on the system pressure. This may lead to repeatable
differences.
Insure that no cavitation dissolve from the measured liquid. Depending on the
measured liquid it can be helpful to have enough back pressure on the outlet of
Flowmax 54i to avoid cavitation. Insure all mechanical connections are tight.
Particles present in the flow stream may result in measuring errors!
When using pumps, Flowmax 54i must be installed in flow direction on the
pressure side, in order to ensure sufficient pressure. The maximum pressure
rating of Flowmax 54i has to be considered.
NOTICE!
NOTICE!

Assembly and installation Flowmax

54i
8 M I B
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:
DN25 DN 32 DN 40 DN50
Inflow distance 30cm 40cm 45cm 60cm
Outflow distance 20cm 20cm 20cm 20cm
2.2 Assembly of the flowmeter
The flowmeter is mounted into a pipe system by using the mechanical connection.
Flowmax 54i 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 54i should be installed on the pressure side
of the pump.
It is recommended to place the pump in the same plane as the container. Thus,
the pump runs independently full and there is caused no vacuum when
promoting.
If it is not possible to mount the flowmeter vertically, then mount the flowmeter 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 54i.
Figure 3: Mounting examples for Flowmax 54i

Flowmax

54i Assembly and installation
M I B 9
IMPORTANT!
The Flowmax 54i 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.
The hydraulic screw connections on the process side must be hand-
tightened.
Vibrations or mechanical forces may decrease measuring accuracy.
IMPORTANT!
Figure 4: Mounting possibilities

Assembly and installation Flowmax

54i
10 M I B
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 54i is not assembled and installed.
Wiring installation, disassembly and removal must be performed by
qualified persons experienced and knowledgeable about electrical work.
Figure 5: 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 / Frequency output
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
0.1ml/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
300l/min => 20mA (depending on
diameter)
Empty pipe Alert => 3.5mA
WARNING!

Flowmax

54i Assembly and installation
M I B 11
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
300l/min => 20mA (depending on
diameter)
Empty pipe Alert => 3.5mA
5-pin plug with RS 485 – communication and digital output Q1:
Pin
Fun
c
tion
Description
1 24 VDC Voltage supply: 18 ... 30 VDC
2 Pulse / Frequency output
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
0.1ml/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

Assembly and installation Flowmax

54i
12 M I B
8-pin plug with 1-wire communication:
Figure 6: 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
Functions
1. Pulse / Frequency 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 0.1ml/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 / Frequency 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 0.1ml/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
300l/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 starts by a rising edge of 24V.
Reset of the counter by a rising edge of 24V.
Creeping suppression will be deactivate as long as
there are 24V at the input.
8 Shielding EMC safety
*it applies: for Q1 + Q2 ≤100mA

Flowmax

54i Assembly and installation
M I B 13
8-pin plug with RS 485 communication:
Figure 7: 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 / Frequency 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 0.1ml/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 starts by a rising edge of 24V.
Reset of the counter by a rising edge of 24V.
Creeping suppression will be deactivate as long as
there are 24V at the input.
5 Analog output QA 4 ... 20mA; 0 ... 20mA
Example: 0l/min => 4mA
300l/min => 20mA (depending on
diameter)
Empty pipe Alert => 3.5mA
6 Communication RS 485 A
7 Communication RS 485 B
8 Shielding EMC safety
IMPORTANT:
Only operate the flowmeter Flowmax54i within the operating limits
stipulated on the product label and the operating manual / data sheet. Use
of the Flowmax 54i outside these conditions will lead to overloads, which
cause permanent damage.
IMPORTANT!

Commissioning Flowmax

54i
14 M I B
3. Commissioning
NOTE:
After starting up the electronics, the unit is ready for use, but it reaches its
optimum operating state after 30 minutes. It makes sense to carry out a basic
trim or zero point adjustment only after this warm-up phase.
NOTE:
If Flowmax 54i used for a fluid other than water, the "basic trim" has to be carry
out during commissioning. Therefore, the device has absolutely be filled with
medium.
The basic trim can be carried out via the device display (alternatively FlowCon
200i). During the adjustment, the medium may not flow, as this can lead to a
measurement deviation. If there is a possible flow, it will be stored as "zero point".
3.1 Operating
If Flowmax 54i 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 54i may also be ordered with customized settings, but customized
settings must be requested when Flowmax 54i is ordered.
NOTE: 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
200i.
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 ... 20mA resp. 0 … 20mA
-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 ... 20mA resp. 0 … 20mA
-Pulse value
-Creeping suppression
-Optimization of measurement curve with up to 8 interpolation values
(medium matrix)
NOTICE!
NOTICE!
NOTICE!

Flowmax

54i Commissioning
M I B 15
3.1.1 Display and user menu
Flowmax 54i 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.
Figure 8: Operating with the key pad
Press the “Set” key to display the main menu. Different menu options can be
select 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, he will be
prompt to enter a password. This ensures that only authorised personnel can
make changes to the unit parameters. The default password for Flowmax 54i 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. Here, the unit remains in the submenu until the operator exits the
submenu again with the ESC key.
Operating examples see appendix.
NOTE:
The display always shows the currently set activated parameter of the menu first.
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 54i without display has the same features as the display version, but
you can change parameters only via the display or programming unit FlowCon
200i.
NOTICE!
NOTICE!

Commissioning Flowmax

54i
16 M I B

Flowmax

54i Commissioning
M I B 17
Figure 9: Menu structure Flowmax 54i

Commissioning Flowmax

54i
18 M I B
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 54i 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. After the set time has passed, the output switches
regardless of the measured quantity. 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 sec
Default setting “Dosing Time”: 3 Seconds
Example:
Dosing time = 3 seconds. That means Flowmax is sending the closing signal after
2.1 to 3.0 sec to the valve. The dosing time is intended as a safety function and
should be selected insignificantly longer than the actual time required for dosing.
This ensures that possible malfunctions/leakages in the structure/system are
detected at an early stage. An exact dosage purely on the dosing time is not
useful.
IMPORTANT!
If Dosing Time = 0 the time switch-off is inactive.
To be able to activate dosing, a digital output must be parameterised for dosing.
Dosing can be started both via the menu and via the digital input.
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.
WARNING!
IMPORTANT!

Flowmax

54i Commissioning
M I B 19
3.2.3 Media
3.2.3.1 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 54i is completely filled with liquid, and there
must be no flow, as this condition is the new “zero” value.
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.
IMPORTANT!
In contrast to the basic trim, the Set Offset is not stored in the device. When the
unit is restarted, the original, last stored value is active.
3.2.3.2 1-Pt-Correction
Setting range: -50.0 ... 50.0 % in steps of 0.1%
Default setting: 0 %
Example of operation see appendix.
3.2.3.3 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 0% to - 25%.
Figure 10: Function of creeping suppression illustrated with 0.6 l/min
IMPORTANT!

Commissioning Flowmax

54i
20 M I B
Example: Creeping suppression = 0.6 l/min
If the flow rate is lower than 0.45 l/min the creeping suppression
becomes active. 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: DN25: 0.0 … 19.2 l/min in 0.0006 l/min steps
DN32: 0.0 … 192.0 l/min in 0.006 l/min steps
DN40: 0.0 … 192.0 l/min in 0.006 l/min steps
DN50: 0.0 … 192.0 l/min in 0.006 l/min steps
Default settings: DN25: 5 l/min
DN32: 9 l/min
DN40: 18 l/min
DN50: 36 l/min
Lag Creeping Flow
The activation of the creeping suppression can be delayed. The value is
adjustable via menu.
Figure 11: Function Lag Creeping Flow at 15l/min
Setting range: 0...99.0 s in steps of 0.1 s
Default settings: 0.5s
3.2.3.4 Basic Trim
The “Basic Trim” function insures that the flowmeter is conforming to the media
specific characteristics. To execute this function, Flowmax 54i 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”.
0
5
10
15
20
25
30
35
40
45
0 1 2 3 4 5 6 7 8 9 10 11 12
Flow [l/min]
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
Flow without
Creeping Suppression
Creeping Suppression
Creeping Suppression
x 0.75
Flow without
Lag Creeping Flow
Flow with 2 sec
Lag Creeping Flow
NOTICE!
IMPORTANT!