Arkon MAGB2 User manual

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List of Contents
1. Introduction ................................................................................................................................................3
1.1. Operating Principle.............................................................................................................3
1.2. Applications.........................................................................................................................3
1.3. Safety Instructions...............................................................................................................3
1.4. Unpacking the flowmeter .....................................................................................................4
2. Installation ..................................................................................................................................................5
2.1. Remote or Compact?...........................................................................................................5
2.2. Sensor installation ...............................................................................................................5
2.3. Dry liner...............................................................................................................................6
2.4. Installation of the transmitter................................................................................................7
2.5. Cables connections .............................................................................................................8
2.5.1. Compact version........................................................................................................................................................... 8
2.5.2. Remote version............................................................................................................................................................. 8
2.6. Connections overview..........................................................................................................9
3. MAGB2 Transmitter Unit .........................................................................................................................10
3.1. Main screen.......................................................................................................................10
4. Battery.......................................................................................................................................................13
4.1. Battery Specification..........................................................................................................13
4.2. Battery life..........................................................................................................................13
4.3. Changing the battery .........................................................................................................13
4.4. External power...................................................................................................................13
5. Frequency output.....................................................................................................................................14
6. Relay output .............................................................................................................................................14
7. USB communication................................................................................................................................16
8. External measurements ..........................................................................................................................17
8.1. External temperature sensor..............................................................................................17
8.2. External pressure sensor...................................................................................................18
9. External modules .....................................................................................................................................19
9.1. RS485 Module...................................................................................................................19
9.2. 3G/GPRS/GSM Module.....................................................................................................20
9.3. 4-20mA module.................................................................................................................21
10. Menu........................................................................................................................................................22
11. MODBUS .................................................................................................................................................23
11.1. General Modbus RTU......................................................................................................23
11.2. Commissioning................................................................................................................24
11.3. Modbus holding registers.................................................................................................25
11.4. Password.........................................................................................................................26
11.5. Real-time measurement - Integer ....................................................................................27
11.6. Real-time measurement - Float........................................................................................28
11.7. Info ..................................................................................................................................29
11.8. Display.............................................................................................................................30
11.9. User settings....................................................................................................................31
11.10. External Measurements.................................................................................................34
11.11. Service settings .............................................................................................................35
11.12. Factory Settings.............................................................................................................37
11.13. GPRS settings...............................................................................................................39
11.14. Authorize .......................................................................................................................40
12. Datalogger ..............................................................................................................................................41
13. Internal backup.......................................................................................................................................41
13.1. Automatic saving data......................................................................................................41
14. MAGB2 SW .............................................................................................................................................42
14.1. System requirements.......................................................................................................42
14.2. Installation/Uninstall Flowmeters software .......................................................................42
14.3. Service section................................................................................................................44
15. FW Update ..............................................................................................................................................46
16. Liner and electrode selection ...............................................................................................................47
17. Flowmeter Dimensions..........................................................................................................................48

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18. How to order your MAGB2....................................................................................................................50
19. MAGB2 Error Code Table......................................................................................................................51
20. Firmware version compatibility............................................................................................................52
21. Appendix.................................................................................................................................................53
21.1. CE and Conformity.......................................................................................................... 53
21.2. Warranty.......................................................................................................................... 53
21.3. Contact............................................................................................................................ 53

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1. Introduction
1.1. Operating Principle
The measurement is based on the principle of Faraday‘s law on
electromagnetic induction in which an electric voltage is induced in an
electrically conductive body that moves in a magnetic field. Liquid flows
through a tube in the direction of the magnetic field. Liquid with a certain
minimum electrical conductivity induces a voltage which is detected by two
electrodes located in a 90 degree angle from the magnetic field and the flow
direction.
1.2. Applications
Water / waste
water
Chemical
industry
Food industry
Power
engineering
Agriculture
Effluent
Industry
1.3. Safety Instructions
Please read this manual carefully before using the product.
Keep this manual for future reference. Arkon Flow Systems, s.r.o will not be liable for any
damage caused by improper use of the product or its accessories.
The MAGB2 flow converter - flow-meter must not be mounted in explosive hazardous areas.
Minimum liquid conductivity
>20 s / cm for demineralised cold water.
>5 s / cm for other liquid.
Liquid velocity
min. 0.1 m / sec, max. 10 m / sec.

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1.4. Unpacking the flowmeter
While unpacking the flowmeter, conduct a visual check of the flowmeter upon
receipt to make sure the product has not been damaged during transport.
Check the completeness of the package. In case of any problem, contact the
Arkon sales department without delay.
oFlowmeter
oCables
oPendrive + Manual
oMounting kit + Key

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2. Installation
2.1. Remote or Compact?
Any MAGB2 flowmeter can be delivered in two versions; Compact or Remote. The compact version has the
transmitter unit connected directly to the sensor body. This version does not require any further mounting or
installation of the transmitter.
The remote version has a separated transmitter. It is connected to the sensor via a cable. The cable entry
into the sensor is protected by a junction box, which is potted to IP68. The cable entry on the transmitter
side is through a M20x1,5 gland.
The cable type used for the connection between sensor and transmitter for remote versions:
UNITRONIC® Li2YCY (PiMF), 2x2x0.34
The MAGB2 can be used with a maximum 6 mts of cable between sensor and transmitter in remote version.
2.2. Sensor installation
Sensor dimensions can be found on chapter 17.
Proper sensor installation is extremely important in order for your flowmeter to work correctly. Below, you
will find the minimum sensor installation requirements that need to be respected at all time.
Sensor
installation
requirements:

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All MAGB2 sensors are supplied with a built in earthing electrodes that are sufficient for all applications with
metal pipes and tanks. However on applications where all pipes and tanks are manufactured from plastic, it
is recommended that earthing rings are also installed to ensure the maximum resistance of the sensor to
earth is <1 ohm.
Sensor grounding with earthing rings:
2.3. Dry liner
Flowmeters with a Hard Rubber liner can show incorrect readings during the first 2-3 days after installation.
This is due to the fact that the time needed for transport and the time before installation is long enough for
the liner to dry out and thus it changes shape/size. This change, in effect, affects reading accuracy. Simply
be keeping the meter wet, this problem solve itself within 2-3 days and no other action is required at all.
Conductive (metal) pipe
Non-conductive (plastic, lined) pipe

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2.4. Installation of the transmitter
In case of a compact flowmeter version, the transmitter will need no further installation, and should be ready
for use.
In case of a remote version, the following 4 steps are necessary.
Mount the transmitter to a wall, panel, or DIN-rail.
Connect the transmitter to the signal cable from the sensor.
To do this undo four M6x22 screws using allen key nr.5 that is part of the delivery.
After the meter is opened, pull the signal cable through the cable gland on the bottom of the transmitter
housing (see page 8). Connect the connector at the end of the signal cable from the sensor to the
transmitter circuit board.
Set up the transmitter for use.
You are now ready to start using your flowmeter or to customize its settings as per your requirements. For
example;
- Set-up the measurement unit of flow-rate displayed, e.g. m3/hr.
- Set up of the unit for the volume displayed. For all volume counters this same unit will be used.
Electrical installation should only be performed by a qualified person. Standard safety
regulations for hazardous electrical installations have to be respected.
The O-ring sealing shall be exchanged every 6 months of operation.
Wall
mounting:
DIN-rail
mounting:
The electronics
have to be
protected against
direct sunlight and
high temperatures!
The transmitter
housing should be
exposed to minimal
mechanical strain only
(max. 1kg)!
Panel
mounting:

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2.5. Cables connections
The following diagram shows the connections of the cables between sensor and transmitter.
2.5.1. Compact version
Note: keep the unshielded part of electrode cable as short as possible.
2.5.2. Remote version
Recommended cable Li2YCY 2 x 2 x 0.34 PiMF.
Note: keep the unshielded part of electrode cable as short as possible.

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2.6. Connections overview

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3. MAGB2 Transmitter Unit
The MAGB2 Transmitter unit is the main part of the flowmeter. It consists of the MAGB2 motherboard, a
graphical display, touch-buttons and transmitter housing. Through the display and with help of the buttons,
you can navigate the meter menu. The following symbols are used in this manual and on the flowmeter
display.
3.1. Main screen
Possible secondary display functions:
Total Volume
This is the total volume counter; the sum of all historical flows for a particular flowmeter. The user is not able
to zero this counter without use of the service password. Direction of flow is ignored for this counter
(negative flow is calculated the same way as positive flow).
Total + Volume
This counter is only credited when the measured medium is flowing in the chosen positive direction. In case
the flow is 0, or if it is flowing in the opposite (negative) direction, the number on the counter remains the
same.
Total - Volume
This counter works the same way as the positive volume counter, yet in the opposite direction. In case the
flow is 0, or flowing in the designated positive direction, the number on this counter will remain the same.
Auxiliary + Volume
This is a 2nd total + volume counter. It works the same as the Total + Volume counter, yet with the only
difference being that it can be reset to 0 at any time, with User Settings password.
You can cycle through these 4 indication screens by pressing the up/down buttons on the transmitter.
Unit Volume
Error Code (hex)
Measurement status
Secondary
display function
Unit Flow
Clock
Battery Status
Secondary
display
Status Icons
Actual Flow

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Date
Show actual date set in the meter.
Frequency output (FOUT)
Show actual frequency on the output.
External temperature reading (XTemp)
Show actual temperature using external temperature sensor.
External pressure reading (XPress)
Show actual pressure using external prsesure sensor.
Velocity
Shows calculated velocity from actual flow and set DN
Symbol
Battery capacity
100 % - 80 %
80 % - 60 %
60 % - 40 %
40 % - 20 %
< 20%
If the battery capacity display is between 20% - 40%, we recommend that the existing
batteries are replaced with new batteries.
Symbol
Function

Enter

Escape

Back

Down

Up

Left

Right
D
Flow simulation mode

Selection menu
Measurement Stop: If the display indicates this symbol, the totalizers are
not incremental.
Measurement Running: Flow meter run, totalizers are incremental
Fast Excitation function: This icon indicates a maximum frequency of
excitation (6.25 Hz). This option is available if you turn on this function in user
menu and push the button for more than 5 second. The following 5 minutes
will be at Fast Excitation and will then revert back to the previous setting.
This setting is battery consumable!
RS485 module connected

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GPRS module connected
Excitation failed
4-20mA module connected

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4. Battery
4.1. Battery Specification
Electrical Specifications of 5 pack batteries
Nominal voltage
Capacity
3,6V
75000 mAh
Estimated
battery life
Up to 10 years (dependent on flowmeter
settings and ambient conditions)
Temp. Range
-20 –70°C
Dimensions:
width = 99 mm - depth = 54 mm - height =
60 mm
Weight
430 g
NOTE: The specifications mentioned above are related only to “Arkon battery packs”. We can only
guarantee them when using original Arkon batteries. A new battery packs can be ordered from
Arkon.
4.2. Battery life
The battery operation time depends on ambient temperature, conditions, flowmeter functions.
Settings negatively affecting battery life:
•USB communication
•RS485 communication
•Display and/or backlight still on
•Frequency or relay set to Volume pulse
•GPRS communication
•4-20mA output
•External measurements inputs
•Fast excitation mode
4.3. Changing the battery
If the battery indicator indicates low battery capacity, remove the battery by the following steps:
- Un-plug the old battery pack, remove it, reinstall new battery pack.
- Activate in SERVICE menu Battery capacity with 75000mAh and Battery exchange date with real
date of the battery exchange.
4.4. External power
The unit is prepared to be powered from external power source.
Excitation frequency [Hz]
6.25
3.125
1.5625
1/5
1/15
1/30
1/60
Average battery operation time
[months] of 5 batteries pack
6
12
22
96
120
150
150
Battery
connectors

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5. Frequency output
As an analogue output MAGB2 has one frequency output (FOUT) configurable to be flow dependent. The
output is galvanically isolated open drain with following connection. The use is mainly for calibration
purposes, can be used as flowrate indicator for PLC units.
Connection:
Recommended resistance R=1 k Ω
The output can be set to:
0) OFF (default)
1) FREQUENCY OUT –the output generate frequency based on actual flow. User sets the flow at 1000Hz
signal. Then the frequency is proportional to the flow. The battery current consumption is higher if you
choose this option.
2) PULSE VOLUME –this setting works the same way as relay output->volume pulse: the output
generates a pulse when the preset volume has passed the sensor (the pulse width can be set). The battery
current consumption is higher if you choose this option. Minimal resolution is 1ml.
6. Relay output
As a second analogue output MAGB2 has one latching relay output configurable to an error detection or
flow dependent. This output is used for status or volumetric information. The output is galvanically isolated
dry contact.
Connection:
Frequency
output
connector
RELAY
output
connector

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The output can be set to:
1) OFF (default)
2) FLOW + output ON, for any positive flow
3) FLOW –output ON, for any negative flow
4) ERROR output ON, for any error identified by the device
5) AIR DETECT output ON, during air detection (empty pipe)
6) FIXED output ON, fixed status signal
7) ON IN output ON, if the actual flow is within the given range with hysteresis (can be set under
Comparator Flow - Flow 1, Flow 2, Hysteresis 1 and Hysteresis
8) ON OUT output ON, if the actual flow is outside the given range with hysteresis (can be set under
Comparator Flow - Flow 1, Flow 2, Hysteresis 1 and Hysteresis 2)
9) ON > Flow1 output ON, if the actual flow is the bigger than the value set as Flow 1 and hysteresis
(can be set under Comparator Flow –Flow 1, Hysteresis 1)
10) ON < Flow1 output ON, if the actual flow is smaller than the value set as Flow 1 and hysteresis
(can be set under Comparator Flow –Flow 1, Hysteresis 1)
11) VOLUME PULSE–the output generates a pulse when the preset volume has passed the sensor
(the pulse width can be set). The battery current consumption is higher if you choose this option. Minimal
resolution is 1m3.
Option 11 is battery consumable!
On In:
On Out:
On > F1:
On < F1:
Pulse Width –width of the generated pulse in ms (1 –999 ms).
ON
OFF
F1
F1+ H1
F2–H2
F2
ON
OFF
F1
F1+ H1
F2
F2–H2
ON
OFF
F1
F1+ H1
ON
OFF
F1
F1+ H1

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7. USB communication
The easy way to set and read the flowmeter is via USB interface. After connecting the standard mini USB
cable to the computer, drivers will be automatically installed and the flowmeter appears in the computer as a
virtual COM port. Therefore is possible to use Arkon communication software or use your own SCADA
software. The communication protocol is Modbus RTU over serial port. Note USB connection is also used
by datalogger download.
Maximum data size is 64B (about 14 MODBUS addresses at once)
USB connect is battery consumable!
BASIC CIRCUIT CONNECTIONS:
VIRTUAL COM PORT (VCP) DRIVERS:
Drivers works only on Windows 10 and are installed automatically.

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8. External measurements
Two different sensors can be connected to MAGB2 flowmeter –low power temperature and/or low power
pressure sensor. The needed tool is flat head screwdriver 2mm.
8.1. External temperature sensor
A special low power smart temperature sensor is used.
Specification:
Range
-20 - 130°C
Ambient temperature
-20 - 130°C
Power supply
3,3VDC
Output type
Impulse
Accuracy
+-0,5°C
Process connection
M20x1,5 male
Ingress protection
IP67
Cable legth
1 meter
Excitation frequency
1,5; 1/5; 1/15; 1/30
MAGB2 connection:
Mechanical connection:
The preload is 20Nm.
The installation torque is 34 Nm.
The maximum installation torque shall not exceed 70 Nm.
Sealing: O ring D17x2.5, NBR70°

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8.2. External pressure sensor
A special low power smart pressure sensor is used.
Specification:
Range
0-20 Bar (0-2MPa)
Ambient temperature
-40 - 125°C
Power supply
3,3VDC
Output type
Digital
Accuracy
+-0,5% FS
Process connection
M20x1,5 male
Ingress protection
IP67
Excitation frequency
1,5; 1/5; 1/15; 1/30
MAGB2 connection:
Mechanical connection:
The preload is 20Nm.
The installation torque is 34 Nm.
The maximum installation torque shall not exceed 70 Nm.
Sealing: O ring D17x2.5, NBR70°

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9. External modules
9.1. RS485 Module
APPLICATIONS:
Industrial Automation, Industrial Process Control, Peripheral - PC and Terminal.
Electrical Specifications
VCC to Ground
3.3-5 VDC
Module needs external voltage for its operation. Non-
isolated version without external power on request.
Baud rate
Max. 19200 baud/s
Isolation
3750Vrms
BASIC CIRCUIT CONNECTIONS:
Multi-Node Network with End Termination Using module RS485
Terminator Rtwith resistance 100should be connect to the end of line RS-485.
Module Name:
Symbol:
Ordering Code:
MAGB2 RS485
Module
******485
Warning electrostatic sensitive device.
Any connection or disconnection of any module has to be done with the battery being
unplugged. Using RS485 module affects battery life.