Icon Process Controls truflo UltraFlo 2000 Series User manual

Ultrasonic Flow Meter
UltraFlo®2000 SERIES
Operating Manual
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Ultrasonic Flow Meter
UltraFlo®2000 SERIES
400.0
5496
Flow
Total
[GAL]
0%
50%
100%
[GPM]
Set
Esc

Safety Information
Technological Progress
Product Description
Features
Measuring Principle
Operational Safety
Technical Specifications
Installation Instructions
Assembly of the Flowmeter
Electrical Wiring
Commissioning
Display & User Menu
Menu Organization for 5-Pin Version
Menu Organization for 8-Pin Version
Functionalities of Flow Meter & Default Settings
Exchange of Measuring Device
Behavior of the Temperature Sensor
Possible Error Text
Dimensions and Weight
Warranty, Returns and Limitations
03
03
03
04
04
04
05
06
07
08
11
12
13
14
15
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Table of Contents
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Ultrasonic Flow Meter
UltraFlo®2000 SERIES

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Ultrasonic Flow Meter
UltraFlo®2000 SERIES
Notice : Is used to lead users to helpful information not related to personal injury.
Safety Information
Technological Progress
indicates general hazardous situations or cases
which, if not avoided, could result in serious injury or
death.
Warning | Caution | Danger indicates situations or cases which, if not avoided,
could result in damage or failure of the UltraFlo®
equipment.
IMPORTANT!
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 :
The flow meter UltraFlo®should only be used for measuring the flow of pure, homogeneous liquids.
The UltraFlo®is not intended for use in medical applications.
The volume flow meter UltraFlo®is built in accordance with 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.
Intended Use
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 removal of wires is
performed while electrical power is energized
Personnel for Installation, Commissioning and Operation
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
www.iconprocon.com
Product Description
The UltraFlo®2000 Flow Meter utilizes ultrasonic technology to measure both conductive and non conductive liquids, and is an excellent
choice for very corrosive liquids such as strong acids and alkalies.
The UltraFlo®2000 has no moving parts and can measure pulsating, dosing and metering flow applications. All parts that contact the
liquid are made of corrosion resistant Polysulfone.
The UltraFlo®2000 is characterized by its high measurement accuracy, repeatability and guaranteed long-life performance.

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Ultrasonic Flow Meter
UltraFlo®2000 SERIES
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.
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.
Flowmeter 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.
Flowmeter meets the safety requirements concerning the Protective Extra Low Voltage directive
according to EN 50178, SELV, PELV.
Fig. 1: Presentation of the principle of ultrasonic flow measuring
Sender /
Receiver Receiver /
Sender
w
c v+
+=L
w
c v+
+=L
v
c
c +v
vc
c -v
v
v
L
D
vK*
( )
+ -
~
~
-
+
-
L : length of measuring pipe
K
: factor
D
: diameter of measuring pipe
v
: flow velocity
c : sound velocity of the fluid
: phase with the flow
: phase against the flow
Operational Safety
Measuring Principle
All Plastic HDPE Wetted Materials
High Accuracy: ± 1.0%
Superior Corrosion Resistance
4-20mA + Pulse Relay Output | RS-485
Negligible Pressure Drop
Empty Pipe Alarm
Air Bubble Detection
Features
Blind DisplayDisplay
400.0
Total
[GAL]
5496
Flow
[GPM]
0% 50% 100%

Technical Specifications
Output
Output 4-20mA + Pulse Relay | RS-485
Ambient Temperature -15 ... +50°C
Storage Temperature -15 ... +50°C
Current output QA 0/4...20 mA
Lower- and upper limit adjustable,
Ground connected to supply ground
Error Signal according to NAMUR NE43 with 4 … 20 mA
Digital output Q1/2 via transistor npn- and pnp-logic
max. 30V/100mA
output voltage according to DIN 19240:
5V means LOW
12V means HIGH
Short cut resistant
Frequency 0....10kHz
Measuring Deviation ± 2% of reading ± 3 mm/s
Option: ± 1% of reading ± 3 mm/s
Reference conditions (VDE/VDI 2642)
Repeatability 0.5%
Data Interface Data Interface for Parameterize
Electrical
Power Input 24VDC | 3.6W
Power Supply 18-30VDC
Connection plug 5 pins, plug 8 pins, 10-wire Teflon cable (5m)
Display
LCD Display Simultaneous Display of volume Flow, Quantity, bar graph, lighted
Standards and Approvals
CE | FCC | RoHS Compliant
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Ultrasonic Flow Meter
UltraFlo®2000 SERIES
General
Material HDPE
Protection Class IP67 | NEMA 4X
Medium Temperature -20 - 160°F | -29 - 107°C
Measuring Range | GPM | LPM 0.8 - 80 | 3.0 - 300
Max. Pressure | Non-Shock 100 psi | 7 bar
Process Connection GF External Thread 2"
Dimensions | L | W | H | mm 220 | 95 | 98
Weight | lbs 2.2

Installation Instructions
The housing of Flowmeter is labeled with an arrow symbolizing the direction of the flow. The flowmeter must be installed in direction of
the flow.
For fastest possible bubble detection it is important to keep the pipe distance to UltraFlo 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 UltraFlo®2000 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.
Note : 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 UltraFlo®2000 to avoid cavitation. Insure all mechanical connections are tight.
Particles present in the flow stream may result in measuring errors!
Note : The housing of UltraFlo 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 flowthrough is in the same direction as the arrow symbol.
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:
When using pumps, UltraFlo®2000 must be installed in flow direction on the pressure side, in order to ensure sufficient pressure. The
maximum pressure rating of UltraFlo®2000 has to be considered.
Fig. 2: Installation position of Flowmeter
Nominal Diameter 2"
Inflow Distance 40cm
Outflow Distance 20cm
TOP - Outlet
DOWN - Inlet
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Ultrasonic Flow Meter
UltraFlo®2000 SERIES
400.0
Total
[GAL]
5496
Flow [GPM]
0% 50% 100%

Assembly of the Flowmeter
Note : The flow meter is mounted into a pipe system by using the mechanical connection. UltraFlo 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, UltraFlo should be installed on the pressure side of the pump.
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 UltraFlo®2000 Series.
IMPORTANT! The UltraFlo®2000 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 handtightened.
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.
Fig. 3: Mounting examples for UltraFlo
Fig. 4: Mounting possibilities
Flow
Flow
Flow
UltraFlo
Valve
Container
UltraFlo
Valve
Pump
UltraFlo
Valve Flow Valve
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Ultrasonic Flow Meter
UltraFlo®2000 SERIES

Electrical Wiring
Fig. 7: Pin code: Connection plug / Socket for 5-pin version
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 Flowmeter is not assembled and installed.
Wiring installation, disassembly and removal must be performed by qualified persons experienced and knowledgeable
about electrical work.
1 24 VDC Power supply : 18...30 VDC
5-Pin Plug with 1-Wire Communication
Pin Function Description
3 GND
4 Communication
Ground : 0 V
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
4
1
3
52
4 3
152
2Pulse / Frequency output
Alternative:
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.
1. Empty pipe output
2. Dosing output
3. Upper or Lower Limit output
4. Negative flow
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
1 24 VDC Power supply : 18...30 VDC
5-Pin Plug with RS485 Communication and Current Output
3 GND
4 Communication
Ground : 0 V
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
2 Communication RS 485 B
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Ultrasonic Flow Meter
UltraFlo®2000 SERIES

1 24 VDC Power supply : 18...30 VDC
5-Pin Plug with RS 485 – Communication and Digital Output Q1:
3 GND
4 Communication
Ground : 0 V
RS 485 A
5 Analog output QA RS 485 B
2 Pulse / Frequency output
Alternative:
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.
1. Empty pipe output
2. Dosing output
3. Upper or Lower Limit output
4. Negative flow
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
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Ultrasonic Flow Meter
UltraFlo®2000 SERIES
Fig. 8: Pin code: Connection plug / socket for 8-pin version
1 24 VDC
2
Power supply : 18...30 VDC
8-Pin Plug with 1-Wire Communication
Pin Function Description
3 GND
4 Digital output Q2 Functions:
Ground : 0 V
Digital output Q2
Configurable npn- or pnp-transistor, max. load 100mA*.
Max. voltage must be less than the supply voltage
1. Empty pipe output
2. Dosing output
3. Pulse / Frequency output
4. Upper or Lower Limit output
5. Negative flow
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.
65
1
4
87 3
2
65
1
4
87 3
2
Digital Output Functions Digital Output Q1
Configurable npn-or pnp transistor, max. load 100mA*.
Max. voltage must be less than the supply voltage
1. Pulse / Frequency output
2. Empty pipe output
3. Dosing output
4. Upper or Lower Limit output
5. Negative flow
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.

6 Communication
7 Communication
RS 485 A
RS 485 B
8 Shielding EMC safety
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Ultrasonic Flow Meter
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*it applies: for Q1 + Q2 100mA
IMPORTANT : Only operate the flowmeter UltraFlo®2000 within the operating limits stipulated on the product label and the
operating manual / data sheet. Use of the UltraFlo®2000 outside these conditions will lead to overloads, which cause permanent
damage.
5 Analog output QA 4-20mA ; 0-20mA
 Example: 0L/min => 4mA
  300l/min => 20mA (depending on diameter)
Empty pipe Alert => 3.5mA
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
7 Digital Input
1. Dosing output
2. Set offset
3. Reset counter
4. Creeping flow off
Communication Interface
Digital input
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
1 24 VDC
2
Power supply : 18...30 VDC
8-Pin Plug with RS 485 Communication
3 GND
4 Digital input
Ground : 0 V
Digital input
1. Dosing output
2. Set offset
3. Reset counter
4. Creeping flow off
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.
Digital output Functions Digital Output Q1
Configurable npn-or pnp transistor, max. load 100mA.
Max. voltage must be less than the supply voltage
1. Pulse / Frequency output
2. Empty pipe output
3. Dosing output
4. Upper or Lower Limit output
5. Negative flow
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.

Commissioning
If Flowmeter is used as volume flowmeter for water or water-like liquids, it will not require on-site calibration. Parameters for water are
calibrated at the factory. Notwithstanding the Flowmeter may also be supplied with customized settings. The coordination must be done
at time of purchase order.
Operation
The following parameters may be changed
to settings suitable for the individual
conditions: for 5-pin version
NOTE : If Flowmeter is used for a fluid other than water the "basic trim" has to be carried out during commissioning. Therefor the device
has absolutely be filled with medium.
The basic trim can be done on the device display (alternatively Programmtool). During the adjustment the medium may not flow as it
affects the function
NOTE : If necessary, e.g. if viscosity and/or speed of sound deviate significantly from water, the pre-set parameters can be adjusted via
Programmtool. It is always necessary to adjust the manufacturer pre-set parameters when using the Flowmeter as a dosing device
according to section 3.2 (Dosing 1. Flowmeter as a dosing device). Adjusting the manufacturer pre-set parameters requires
Programmtool.
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
Also reference the UltraFlo®operating instructions
Digital output Q1, function and behavior
Digital output Q2, function and behavior
Digital Input, 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)
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Ultrasonic Flow Meter
UltraFlo®2000 SERIES
TI3B Series
NC-25 Flow Sensor
Flow / No Flow
NC-30 Sensor
Liquid Level
Sensing through
Plastic Wall
Chemical Tank
TIPSeries
OP1 FTM OP2 GPM
UltraFlo®2000
Ultrasonic
Flow Meter
UltraFlo®2000
(Blind Display Option)
Ultrasonic
Flow Meter
400.0
Total
[GAL]
5496
Flow
[GPM]
0% 50% 100%

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 or keys to change values and press [Set] key 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 Flowmeter is 41414. The password can be changed with Programmtool. The user level will remain active for 5
minutes after the last press on any button.
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 possibly visible by scrolling.
NOTE : Functions marked with asterisk (*) are only available for the Flowmeter 8-pin version. Flowmeter without user display supports
the same functions as the display-version. The display and programming unit Programmtool is needed to change configurations of
Flowmeter without user display.
400.0
Total
[GAL]
5496
Flow [GPM]
0% 50% 100%
Fig. 9: Operating with the key pad
The Password should only be shared with personnel authorized to make changes to setting.
Display & User Menu
Flowmeter 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.
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Ultrasonic Flow Meter
UltraFlo®2000 SERIES

Creeping Flow ml/s
l/min + m3
Gal/min + Gal
l/min + l
Dosing Quantity
Dosing Time
Start
Stop
Units
Filter
Media
Set Offset
Basic Trim
Reset Counter
Language
Dosing
Start Screen
Diagnostic
Options Output
Digital Output Q1
Analog Output QA
Version
Values
Configuration
Status
Pulse Output
Off
Dosing
Negative Flow
Upper Limit
Lower Limit
Empty Pipe
NPN normal open
NPN normal closed
PNP normal open
PNP normal closed
Flow
Temperature
Off
0-20mA
4-20mA
max Range
min Range
Output Value
Function
Pulse Value
Upper Limit
Lower Limit
Function
Logic
Off
Strong
Selection
Correction
Deutsch
English
Medium
Soft
Menu Organization for 5-Pin Version
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Ultrasonic Flow Meter
UltraFlo®2000 SERIES

Digital Output Q1
Analog Output QA
Creeping Flow
Units
Filter
Media
Set Offset
Basic Trim
Reset Counter
Language
Start Screen
min Range
max Range
Function
Pulse Output
Off
Dosing
Negative Flow
Upper Limit
Flow
Temperature
Off
0-20mA
4-20mA
Lower Limit
Empty Pipe
PNP normal open
NPN normal closed
NPN normal open
PNP normal closed
Logic
Output Value
Function
Dosing Quantity
Dosing Time
Start
Stop
Version
Values
Configuration
Status
Off
Dosing
Reset Counter
Creeping Flow Off
Set Offser
Pulse Value
Upper Limit
Lower Limit
Function
Logic
ml/s + l
l/min + m3
Gal/h + Gal
l/min + l
Off
Strong
Medium
Soft
Selection
Correction
Deutsch
English
Dosing
Diagnostic
Digital Input
General Settings
Digital Output Q2
Pulse Output
Off
Dosing
Negative Flow
Upper Limit
Lower Limit
Empty Pipe
PNP normal open
NPN normal closed
NPN normal open
PNP normal closed
Menu Organization for 8-Pin Version
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Ultrasonic Flow Meter
UltraFlo®2000 SERIES

Functionalities of Flow Meter & Default Settings
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Ultrasonic Flow Meter
UltraFlo®2000 SERIES
In the sub menu “Set Offset” it is possible to set the actual offset of the flowmeter. Use this function only when UltraFlo®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.
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 the configurable digital inputs.
1. Set Offset
The language of the display can be changed. Available languages are English and German.
2. Language
The function ”Filter“ averages the analog output signal.
Possible Settings:
6. Filter
UltraFlo is able to show actual flow or the volume in different units.
The first letters correspond to the unit of the flow value. The letters after the + correspond to the unit of the volume value.
Example: ml/s + l
Here, the flow appears in the unit "ml / s" (milliliters per second) and the daily amount in "l" (liters).
Gal are US Gal with 1 Gal = 3.785 l.
3. Units
The volume counter of UltraFlo can be reset.
5. Reset Counter
Important! : Once reset, counter values cannot be restored. After a reset the counter works normally.
NOTE : The “Basic Trim” function insures that the flow meter is conforming to the media specific characteristics. To execute this function,
UltraFlo runs a selfdiagnostic function which optimizes all important parameters. This process lasts approximately 1 minute.
4. Basic Trim
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”.
Setting Range ml/s + l, l/h + l, l/min + m³, Gal/min + Gal, l/min + l
Default Setting ml/s + l
Setting Range Soft, Medium, Strong, Off
Default Setting Medium
Following Units can be Selected :

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Ultrasonic Flow Meter
UltraFlo®2000 SERIES
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.
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”.
7. Diagnostic
UltraFlo®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 flow measurement in percent.
9. Media
Testing Flow
For commissioning of the process plant, a test flow can be adjusted. In that case the flowmeter will behave as if the test flow is really
flowing, even if the flowmeter is empty. To start the simulation "Start" must be selected; "Stop" ends the simulation.
When you restart the flowmeter, the test flow is stopped and the value deleted.
Setting Range 0 … 192 l/min in steps of 0.006 l/min
Filter options for Analog Output
Filter
off
soft
medium
strong
100%
16ms
0.3s
1s
4.2s
100
80
60
40
20
0
Response time Analog Output
Off
Soft
Medium
Strong
Value [%]
Time [s]
0 1 2 3 4
8. Dosing
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
Important! If Dosing Time = 0 the time switch-off is inactive.
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.
The Flowmeter 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".
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

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Ultrasonic Flow Meter
UltraFlo®2000 SERIES
10. Creeping Flow Suppression
11. Digital Output Q1 & Q2 (Q2 Only with 8-Pin plug!)
Setting Range 0.0 … 192.0 l/min in 0.006 l/min steps
Default Settings 9 l/min
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.
There are higher tolerances below the Standard Default Settings.
Fig. 7: Function of the creeping suppression illustrated with 0.6 l/min
The Creeping Suppression Works with a Hysteresis of -25%.
1. Creeping Suppression switch on
2. Creeping Suppression switch off
1.2
1.05
0.9
0.75
0.6
0.45
0.3
0.15
0
-25%
Flow [l/min]
Pulse/Analog output Active Inactive Active Inactive Active
1
22
1
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.
Example :
All outputs switch over to high resistance when the supply is smaller than 18V. 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 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
Empty Pipe Output

Fig. 5: Connecting Output Q1 to Relay
Important! When using the dosing function the output should not be configured as normal closed!
If the dosing output is configured as normal closed the valve will stay open after the
Digital Output Q1
Digital output Q1 may be used as pulse output, empty pipe detection, for switching dosing valve or limit control. By using Programmtool
the user can switch between npn and pnp-transistor logic. In case of inductive load a diode has to be connected parallel to the coil.
Setting area : off, pulse output, empty pipe, dosing output, lower limit, upper limit, negative flow
24V 24V
Output
Relay
+
-
npn
pnp
GND
Below Lower Limit Between the Limits
0V Normal Closed High resistance High resistance
0V Normal Open 0V 0V
24V Normal Closed High Resistance High Resistance
24V Normal Open 24V 0V
Above Upper Limit
0V
High resistance
24V
High resistance
Upper Limit Output
Below Lower Limit Between the Limits
0V Normal Closed 0V High Resistance
0V Normal Open High Resistance 0V
24V Normal Closed 24V High Resistance
24V Normal Open High Resistance 24V
Above Upper Limit
High Resistance
0V
High Resistance
24V
Lower Limit Output
Startup of Device While Dosing
0V Normal Closed High Resistance High Resistance
0V Normal Open High Resistance 0V
24V Normal Closed High Resistance High Resistance
24V Normal Open High Resistance 24V
Before/After Dosing
0V
High Resistance
24V
High Resistance
Dosing Output
Empty Pipe Filled, No Flow
0V Normal Closed 0V 0V
0V Normal Open 0V 0V
24V Normal Closed High Resistance High Resistance
24V Normal Open High Resistance High Resistance
Filled, Flow
0V Pulses
0V Pulses
24V Pulses
24V Pulses
Pulse Output
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18
Ultrasonic Flow Meter
UltraFlo®2000 SERIES

Important! Inductive load on the digital outputs without an installed diode may cause damage on the Flowmeter electronics.
dosing batch.
Digital output Q2*
Digital outputs 2 may be used as pulse output, empty pipe detection, for switching dosing valve, limit control or flow direction control.
See Page- 7 Electrical Wiring table connection
The npn or pnp logic can be selected. When the output is connected to an inductive consumer a diode has to be installed parallel to the load.
Flowmeter via pnp, external counter e.g. PLC
Fig. 6: Connecting Output Q2 to counter
Setting area : off, pulse output, empty pipe, dosing output, lower limit, upper limit, negative flow
24V 24V
Output
ca.
2 KOhm Counter
In
GND
GND
npn
pnp
GND
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19
Ultrasonic Flow Meter
UltraFlo®2000 SERIES
20 mA the upper limit of the relevant measurement
4 mA the lower limit of the relevant measurement
3.5 mA empty pipe
The values here signify for 4-20mA configuration
Setting range 0-20mA, 4-20mA, off
Output value Flow, Temperature
Important! When current output is used, the load must not be higher than 500 Ohm. A higher load prevents the device from
providing the maximum current of 22.6mA
The analog output is available as current output 4-20mA or 0-20mA. This is selected with the purchase order. As standard it comes with
current output 4-20mA. It can also be switched off by using Programmtool.
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
The current output ranges from 0 to 22.6mA measuring the flow rate or the condition of the flow measurement.
Function
12. Analog Output QA

Characteristic Curves Analog Output
For the following graphic "min Range" is used for 0%
and "max Range" is used for 100%.
0 - 20mA
Value Current [mA]
Smaller 0%
0% (min Range)
Between 0% and 100%
100% (max Range)
Bigger 100%
0
0
Linear interpolation from 0 to 20 mA
20
20
For the following graphic "min Range" is used for 0%
and "max Range" is used for 100%.
4 - 20mA Value Current [mA]
Empty pipe
Smaller -1.2%
Between -1.2% and 0%
0% (min Range)
Between 0% and 100%
100% (max Range)
Between 100% and 103%
Bigger 103%
3.5
3.8
Linear interpolation from 3.8 to 4mA
4
Linear interpolation from 4 to 20mA
20
Linear interpolation from 20 to 20.5mA
22.6
Filter
Filter
off
soft
medium
strong
100%
16ms
0.3s
1s
4.2s
100
80
60
40
20
0
Response time Analog Output
Off
Soft
Medium
Strong
Value [%]
Time [s]
0 1 2 3 4
24
22
20
18
16
14
12
10
8
6
4
2
00-10-20 10 20 30
Current Output 0-20mA
Current [mA]
Value [%]
40 50 60 70 80 90 100 110 120
24
22
20
18
16
14
12
10
8
6
4
2
00-10-20 10 20 30
Current Output 4-20mA
Current [mA]
Value [%]
40 50 60 70 80 90 100 110 120
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20
Ultrasonic Flow Meter
UltraFlo®2000 SERIES
The function ”Filter“ averages the analog output signal.
Possible Settings:
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”.
Setting Range Soft, Medium, Strong, Off
Default Setting Medium