MIB Flowmax 242i User manual

Flowmax242i
Ultrasonic flow
metering / dosing
device
Operating manual
BA 007E/FM242i/02.18
Valid starting from
Hardware V 2.1
Software V 1.29

General safety instructions Flowmax242i
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 242i
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 flow meter Flowmax 242i may only be used for measuring the flow of
pure, homogeneous liquids.
The volume flow meter Flowmax 242i 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 flow meter.
Conversions and/or changes to the flow meter 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 flow meter 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 flow meter 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242i Tablet of contents
M I B 3
Tablet of contents
General safety instructions.......................................................................................................... 2
Tablet of contents......................................................................................................................... 3
Table 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..................................................................................................... 6
2.1 Installation instructions.............................................................................................................................6
2.2 Assembly of the flow meter......................................................................................................................7
2.3 Electrical wiring ........................................................................................................................................9
3. Commissioning.................................................................................................................... 11
3.1 Operation ...............................................................................................................................................11
3.1.1 Display and user menu ...................................................................................................................12
3.2 Functionalities of flow meter and default settings..................................................................................15
3.2.1 Language ........................................................................................................................................15
3.2.2 Dosing.............................................................................................................................................15
3.2.3 Media...............................................................................................................................................15
3.2.4 Set Offset........................................................................................................................................15
3.2.5 Creeping suppression.....................................................................................................................15
3.2.6 Basic Trim .......................................................................................................................................16
3.2.7 Filter ................................................................................................................................................16
3.2.8 Units................................................................................................................................................17
3.2.9 Reset Counter.................................................................................................................................17
3.2.10 Diagnostic .....................................................................................................................................17
3.2.11 Analog output QA..........................................................................................................................18
3.2.12 Pulse value....................................................................................................................................19
3.2.13 Digital outputs ...............................................................................................................................20
3.2.14 Digital output Q1 ...........................................................................................................................21
3.2.15 Dosing function .............................................................................................................................22
3.3 Overview of default settings...................................................................................................................22
3.4 General Information ...............................................................................................................................23
3.5 Function of Dongle.................................................................................................................................23
4. Exchange of flow meter ...................................................................................................... 24
5. Technical specifications ..................................................................................................... 25
5.1 Dimensions and weight..........................................................................................................................25
5.2 Technical specifications.........................................................................................................................26
6. Accessories ......................................................................................................................... 27
7. Shipment.............................................................................................................................. 27
Appendix..................................................................................................................................... 28

Table of figures Flowmax242i
4 M I B
Table of figures
Figure 1: Presentation of the principle of ultrasonic flow measuring................................................ 5
Figure 2: Installation position of Flowmax 242i................................................................................ 6
Figure 3: Mounting examples for Flowmax 242i.............................................................................. 7
Figure 4: Mounting possibilities....................................................................................................... 8
Figure 5: Fixing Flowmax 242i........................................................................................................ 8
Figure 6: Pin code: Connection plug / socket for 5-pin version....................................... 9
Figure 7: Operating with the key pad............................................................................................ 12
Figure 8: Menu structure............................................................................................................... 14
Figure 9: Function of the creeping suppression illustrated with 0.6 l/min....................................... 16
Figure 10: Characteristic curve 0 to 20mA.................................................................................... 18
Figure 11: Characteristic curve 4 to 20mA.................................................................................... 19
Figure 12: Connecting Output Q1 to relay..................................................................................... 21
Figure 13: Connecting output Q1 to counter................................................................................. 21

Flowmax242i Planning information
M I B 5
1. Planning information
1.1 Areas of application
The flow measurement device in the Flowmax 242i designed to measure
dynamic flow in pipes and tubes. This flow meter is suitable for liquids only. The
Flowmax 242i is used in
Bio-processing applications
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 242i 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

Assembly and installation Flowmax242i
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 242i 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 242i meets the safety requirements concerning the Protective Extra
Low Voltage directive according to EN 50178, SELV, PELV.
Flowmax 242iM has the USP Class VI approval and is resistant to gamma
irradiation.
2. Assembly and installation
2.1 Installation instructions
The housing of the Flowmax 242i has an arrow, symbolizing the flow direction
of 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.
Figure 2: Installation position of Flowmax 242i
For fastest possible bubble detection it is important to keep the pipe distance
from tank to Flowmax 242i 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 242i 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 242i to avoid cavitations. Insure all mechanical connections are tight.
Particles present in the flow stream may result in measuring errors.
NOTICE!

Flowmax242i Assembly and installation
M I B 7
When using pumps, Flowmax 242i must be installed in flow direction on the
pressure side, on order to ensure sufficient pressure. The maximum pressure
rating of Flowmax 242i has to be considered.
Do not exceed the maximum pressure allowance for of the Flowmax 242i
(see section 5.2 Technical specifications). Exceed the maximum pressure
can lead to destruction of the Flowmax 242i.
Flowmax 242i needs no inlet or outlet.
2.2 Assembly of the flow meter
The flow meter is mounted into a pipe system by using the mechanical
connection. Flowmax 242i should be mounted vertically into the pipe for the
best measuring performance. Do not install the flow meter after a dosing valve
where the flow meter can run empty. Placing the flow meter 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 242i should be installed
on the pressure side of the pump.
Figure 3: Mounting examples for Flowmax 242i
Flowmax
Flowmax
Pump
Valve
Container
Valve
WARNING!
NOTICE!

Assembly and installation Flowmax242i
8 M I B
If it is not possible to mount the flow meter 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 242i.
Figure 4: Mounting possibilities
For applications with a “clean design“ for which it is necessary to completely
drain the pipe system, we recommend mounting the flow meter in the vertical
position. Residual liquid may remain inside the device if flow meter is mounted
horizontally.
Vibrations or mechanical forces may decrease measuring accuracy. So if there
is due to vibration or mechanical movements it is necessary to fix Flowmax 242i
additionally, the instrument can be fixed on the lateral slot.
Figure 5: Fixing Flowmax 242i
Flowmax 242i must be installed without mechanical tensions on the existing
pipe system. The flow meter may be damaged if there is tension on the existing
pipe system.
Non-compliance of the installation instructions may result in tearing of the
housing, liquid may leak out.
Flowmax
Flowma
x
Process
Process
Valve
Valve
WARNING!

Flowmax242i Assembly and installation
M I B 9
2.3 Electrical wiring
The dongle must be connected before the Flowmax 242 is started.
It must never be screwed under power.
The dongle-check is performed when the device is started:
If no dongle is detected the display will show “No Dongle”
If a dongle has been recognized but not a measuring pipe it shows
“No Pipe”
If dongle and measuring pipe were detected but do not match it shows
“Wrong Dongle”
In all these messages, the device can not show the menu, can not
measure any flow or empty pipe. Everything is blocked as long as
Flowmax 242i starts with a valid measuring pipe and dongle.
If dongle and measuring pipe fit together the usual field with current flow
and counter is displayed and the menu is normally accessible.
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 242i is not assembled and installed.
Wiring installation, disassembly and removal must be performed by
qualified persons experienced and knowledgeable about electrical work.
Figure 6: Pin code: Connection plug / socket for 5-pin version
Connector cable pin configuration defined by manufacturer.
The outputs may be re-programmed for specific applications.
Pin
Function
Description
1
L+
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-
Transistor, max. load 30V/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 A
5
Analog output QA
4....20mA; 0....20mA
Example: 0l/min => 4mA
36l/min => 20mA
Empty pipe Alert => 3.5mA
(4-20mA, depending on the configured limits)
WARNING!
WARNING!

Assembly and installation Flowmax242i
10 M I B
8-pin plug with 1-wire 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 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
6l/min => 20mA (depending on
diameter
Empty pipe Alert => 3.5mA
6
Communication
and
Set offset
Communication interface
The Offset is set by a signal of 0V for more
than 2 seconds. All the other time it has to be
high resistance.
7
No function
Not used.
8
Shielding
EMC safety
*it applies: for Q1 + Q2 ≤ 100mA
IMPORTANT!

Flowmax242i Commissioning
M I B 11
Attention: Only operate the flow meter Flowmax 242i within the operating
limits stipulated on the product label and the operating manual / data
sheet. Use of the Flowmax 242i outside these conditions will lead to
overloads which cause permanent damage.
3. Commissioning
NOTE: If Flowmax 242i 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. During the adjustment the
medium may not flow as it affects the function.
3.1 Operation
If Flowmax 242i is used as a volume flow meter for water or water-like liquids it
will not require on-site calibration. Parameters for water are calibrated at the
factory. The Flowmax 242i may also be ordered with customized settings, but
customized settings must be requested when Flowmax 242i 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. It is always
necessary to adjust the manufacturer pre-set parameters when using the
Flowmax 242i as a dosing device according to section 3.2 (Dosing 1. Flowmax
242i as a dosing device). Adjusting the manufacturer pre-set parameters
requires a display.
The following parameters may be changed to settings suitable for the individual
conditions:
-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
IMPORTANT!

Commissioning Flowmax242i
12 M I B
3.1.1 Display and user menu
Flowmax 242i is equipped with a display to visualize actual measurement
values and to change parameters of the flow meter. 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
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 242i is 41414. The user level will remain active
for 5 minutes after the last press on any button.
The Password should only be shared with personnel authorized to make
changes to setting.
NOTE:
Always the first parameter of the menu appears in the display. This need not be
the adjusted enabled parameter. The enabled parameter appears inverted and
is possibly visible by scrolling.
IMPORTANT!
NOTICE!

Flowmax242i Commissioning
M I B 13

Commissioning Flowmax242i
14 M I B
Figure 9: Menu structure

Flowmax242i Commissioning
M I B 15
3.2 Functionalities of flow meter and default settings
3.2.1 Language
The language of the display can be changed. Available languages are English
and German.
3.2.2 Dosing
The Flowmax 242i can be configured for manually dosing by choosing the
dosing function via the user display. The Volume “Dosing Batch“ and the
“Dosing Time“ are freely adjustable. When the “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 Batch”: 0 –3500 Liters
Setting range “Dosing Time” 0 –30000 Seconds
Default setting “Dosing Batch”: 0 Liters
Default setting “Dosing Time”: 3 Seconds
3.2.3 Media
Flowmax 242i comes with a medium matrix with up to 8 interpolation values.
Different media can be managed in the sub menu “Media”. By using the sub
menu point “Correction” it is possible to correct the flow measurement in
percent. Example of operation see appendix.
3.2.4 Set Offset
In the sub menu “Set Offset” it is possible to set the actual offset of the flow
meter. Use this function only when Flowmax 242i 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 flow meter. It is also possible to set the offset via a signal of 0V for
more than 2 seconds at PIN 6. All the other time it has to be high resistance..
3.2.5 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 flow meter. 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!
Setting range: 0.0...3 l/min, in 0.006 l/min steps
Default settings: 0.0025 l/min for DN 3
0.024 l/min for DN 5
0.09 l/min for DN 7
The creeping suppression works with a hysteresis of - 25%.

Commissioning Flowmax242i
16 M I B
Figure 10: Function of the 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.
3.2.6 Basic Trim
The “Basic Trim” function insures that the flow meter is conforming to the media
specific characteristics. To execute this function, Flowmax 242i 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 flow meter 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”
3.2.7 Filter
The function ”Filter“ averages the analog output signal. Possible settings: Soft,
Medium, Strong, Off
The analog output signal reacts faster to signal changes when average
determination is set to “soft”. Whereas the analog output signal reacts slower
when average determination is set to “strong”.
NOTICE!
IMPORTANT!

Flowmax242i Commissioning
M I B 17
Filter
100%
off
16ms
soft
0,3s
medium
1s
strong
4,2s
3.2.8 Units
Flowmax 242i is able to show actual flow or the volume in different units.
Following units can be selected:
ml/s + l , Gal/min +Gal , l/min + l , l/min + m³.
The first letters correspond to the unit of the flow value. The letters after the +
correspond to the unit of the volume value.
3.2.9 Reset Counter
The volume counter of Flowmax 242i can be reset. Example of operation see
appendix.
IMPORTANT!
Once reset, counter values cannot be restored. After a reset the counter works
normally.
3.2.10 Diagnostic
The sub menu “Diagnostic“ shows the software/hardware version and other
helpful values for analysis. Actual values and the instrument´s present status are
important to analyze the measurement or failure by the manufacturer service.
0
20
40
60
80
100
0 1 2 3 4
Wert [%]
Zeit [s]
aus
schwach
mittel
stark
IMPORTANT!
NOTICE!

Commissioning Flowmax242i
18 M I B
3.2.11 Analog output QA
The analog output is available as current output 4-20mA or 0-20mA. This is
selected with the purchase order. As a standard it comes with current output 4-
20mA. It can also be switched off by the device menu.
The current output ranges from 0 to 22.6mA measuring the flow rate or the
condition of the flow measurement.
The values here signify for 4-20mA configuration:
20 mA the upper limit of the relevant measurement
4 mA the lower limit of the relevant measurement
3.5 mA empty pipe
Upper and lower limit parameters can be set within the type-specific
measurement of the device. By default, zero flow is set at 4 mA and the
maximum flow is set at 20 mA.
Set point ranges: 0-20mA, 4-20mA, off
Output value: Flow, Temperature
When current output is used, the load must not be higher than 500Ohm. A
higher load prevents the device from providing the maximum current of 22.6mA.
Characteristic curves analog output
0 - 20mA
For the following graphic “min Range” is used for 0% and “max Range” is used
for 100%.
Value Current [mA]
Smaller 0% 0
0% (min Range) 0
Between 0% and 100% Linear interpolation from 0 to 20 mA
100% (max Range) 20
Bigger 100% 20
Figure 11: Characteristic curve 0 to 20mA
0
2
4
6
8
10
12
14
16
18
20
22
24
-20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120
Current [mA]
Value [%]
Current output 0...20mA
IMPORTANT!

Flowmax242i Commissioning
M I B 19
4 - 20mA
For the following graphic “min Range” is used for 0% and “max Range” is used
for 100%.
Value Current [mA]
Empty pipe 3.5
Smaller -1.2% 3.8
Between -1.2% and 0% Linear interpolation from 3.8 to 4mA
0% (min Range) 4
Between 0% and 100% Linear interpolation from 4 to 20mA
100% (max Range) 20
Between 100% and 103% Linear interpolation from 20 to 20.5mA
Bigger 103% 22.6
Figure 12: Characteristic curve 4 to 20mA
Min Range
Here, the value is set at the 0 or 4 mA to be output.
Setting range: 0 to 8000ml/s in steps of 0.01
Default setting: 0 ml/s
Max Range
Here, the value is set at the 20 mA to be output.
Setting range: 0 to 8000ml/s in steps of 0.01
Default setting: max Flow of the flowmeter (depending on diameter)
DN 3: 17 ml/s
DN 5: 50 ml/s
DN 7: 100 ml/s
3.2.12 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 242i (10kHz) nor the maximum input frequency of the
control. If the maximum frequency is exceeded the Flowmax 242i 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 0.1 ml/Pulse steps
Default setting: 1.0 ml/Pulse
0
2
4
6
8
10
12
14
16
18
20
22
24
-20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120
Current [mA]
Value [%]
Current output 4...20mA

Commissioning Flowmax242i
20 M I B
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.
IMPORTANT!
If Dosing Time =0 the time switch-off is inactive.
3.2.13 Digital outputs
All outputs switch over to high resistance when the supply is smaller than 16V.
When overload or short circuit is detected the digital outputs are switched off
after 100µs for a period of 2s. When time is up the outputs get applied again.
Empty pipe output
Empty pipe Filled, no flow
0V normal closed High resistant 0V
0V normal open 0V High resistant
24V normal closed High resistant 24V
24V normal open 24V High resistant
Pulse output
Empty pipe Filled, no flow Filled, flow
0V normal closed 0V 0V High resistance
0V normal open 0V 0V High resistance
24V normal closed High resistance High resistance 24V Pulses
24V normal open High resistance High resistance 24V Pulses
Upper limit output
Below lower limit Between the limits Above upper limit
0V normal closed High resistance High resistance 0V
0V normal open 0V 0V High resistance
24V normal closed High resistance High resistance 24V
24V normal open 24V 24V High resistance
Lower limit output
Below lower limit Betwenn the limits Above upper limit
0V normal closed 0V High resistance High resistance
0V normal open High resistance 0V 0V
24V normal closed 24V High resistance High resistance
24V normal open High resistance 24V 24V
Dosing output
Startup of device While dosing Before/after dosing
0V normal closed High resistance High resistance 0V
0V normal open High resistance 0V High resistance
24V normal closed High resistance High resistance 24V
24V normal open High resistance 24V High resistance
IMPORTANT!