KRAL BEM 200 User manual

Operating instructions
KRAL display and processing unit
BEM 200
OIE 24en-GB
Edition 2022-01
Original instructions
www.kral.at

Table of contents
1 About this document ..................................................... 3
1.1 General information .......................................................3
1.2 Target groups ................................................................3
1.3 Associated documents ..................................................3
1.4 Symbols.........................................................................3
1.4.1 Danger levels ....................................................3
1.4.2 Danger signs.....................................................3
1.4.3 Symbols in this document .................................4
2 Safety .............................................................................. 4
2.1 Proper use .....................................................................4
2.2 Foreseeable misuse ......................................................4
2.3 Fundamental safety instructions....................................4
3 Identification................................................................... 4
3.1 Rating plate ...................................................................4
4 Technical data ................................................................ 5
4.1 Dimensional drawing .....................................................5
4.2 Connection field.............................................................6
4.3 Pin assignment ..............................................................6
4.4 Connection data ............................................................6
4.4.1 Supply ...............................................................6
4.4.2 Pulse input ........................................................6
4.4.3 Pulse output ......................................................7
4.4.4 Analog output....................................................7
4.4.5 Ambient conditions............................................7
4.5 Display...........................................................................7
4.6 Weight ...........................................................................7
4.7 Screw terminals .............................................................7
4.8 Data storage ..................................................................7
5 Function description...................................................... 8
5.1 Functional principle........................................................8
5.1.1 Usage................................................................8
5.1.2 Volume measurement.......................................8
5.1.3 Electronic evaluation.........................................8
5.1.4 Applications.......................................................8
5.1.5 Control panel.....................................................9
6 Transportation, storage................................................. 9
6.1 Scope of delivery ...........................................................9
6.2 Unpacking and checking the state of delivery ...............9
6.3 Transporting the electronic unit .....................................9
6.4 Storing the electronic unit ..............................................9
7 Installation, removal .................................................... 10
7.1 Dangers during installation, removal ...........................10
7.2 Installing the electronic unit .........................................10
7.3 Dismantling the electronic unit from OME ...................10
7.4 Dismantling the electronic unit from OMP ...................11
8 Connection ................................................................... 11
8.1 Dangers during connection work .................................11
8.2 Overview......................................................................12
8.3 Connecting the pick up ................................................12
8.4 Connecting the pulse output........................................13
8.5 Connecting the power supply ......................................13
9 Commissioning ............................................................ 14
9.1 Checking the electronic unit ........................................14
10 Decommissioning..........................................................14
10.1 Taking the electronic unit out of operation ...................14
11 Operation........................................................................14
11.1 Basic functions.............................................................14
11.2 Key assignment ...........................................................15
11.3 General operating steps...............................................15
11.4 Setup mode..................................................................15
11.5 Operator mode.............................................................15
11.6 Display flow rate, total or accumulated total ................16
11.7 Reset Total...................................................................16
11.8 Alarm status .................................................................16
12 Menu description...........................................................17
12.1 Setup functions and variables......................................17
12.2 Menu 1 - TOTAL ..........................................................17
12.3 Menu 2 - RATE ............................................................18
12.4 Menu 3 - METER .........................................................18
12.5 Menu 4 - A-OUT...........................................................18
12.6 Menu 5 - D-OUT ..........................................................19
12.7 Menu 6 - OTHER .........................................................19
13 Maintenance...................................................................20
13.1 Required maintenance.................................................20
13.2 Cleaning the electronic unit..........................................20
14 Disposal..........................................................................20
14.1 Disposing of the electronic unit ....................................20
15 Troubleshooting ............................................................21
15.1 Fault table ....................................................................21
16 Accessories ...................................................................22
16.1 Installation....................................................................22
16.1.1 Connecting items.............................................22
16.2 Electrical connection ....................................................23
16.2.1 Alternative power supply .................................23
16.2.2 Plug-in power supply unit EEN13 ...................23
2OIE 24en-GB Edition 2022-01 Operating instructions

1 About this document
1.1 General information
1 About this document
1.1 General information
These instructions form part of the product and must be kept for future reference. Furthermore please
observe the associated documents.
Note In these operating instructions the designation "Electronic unit" is used for the "Display and processing
unit".
1.2 Target groups
The instructions are intended for the following persons:
oPersons who work with the product
oOperator-owners who are responsible for the use of the product
Persons who work with the product must be qualified. The qualification ensures that possible dangers
and damage to property that are connected to the activity are detected and avoided. These persons
are qualified personnel who carry out the work properly due to their training, knowledge and experience
and on the basis of the relevant provisions.
Information on the qualification of the personnel is provided separately at the beginning of the indi-
vidual chapters in these instructions. The following table provides an overview.
Target group Activity Qualification
Fitter Mounting,
connection
Qualified personnel for mounting
Electrician Electrical connec-
tion
Qualified personnel for electric installation
Trained personnel Delegated task Personnel trained by the operator-owner who know the
task delegated to them and the possible dangers arising
through improper behaviour.
Tab.1: Target groups
1.3 Associated documents
oDeclaration of conformity according to EU Directive 2014/30/EU
oCorresponding operating instructions of the flowmeter
oCorresponding operating instructions of the sensor
oCalibration certificate
1.4 Symbols
1.4.1 Danger levels
Signal word Danger level Consequences of non-observance
DANGER Immediate threat of danger Serious personal injury, death
WARNING Possible threat of danger Serious personal injury, invalidity
CAUTION Potentially dangerous situation Slight personal injury
ATTENTION Potentially dangerous situation Material damage
1.4.2 Danger signs
Meaning Source and possible consequences of non-observance
Electrical voltage Electrical voltage causes serious physical injury or death.
Operating instructions OIE 24en-GB Edition 2022-01 3

2 Safety
2.1 Proper use
1.4.3 Symbols in this document
Meaning
Warning personal injury
Safety instruction
Request for action
1.
2.
3.
Multi-step instructions for actions

Action result

Cross-reference
2 Safety
2.1 Proper use
oThe electronic unit is provided for usage with a KRAL flowmeter.
oUse the electronic unit only within the operating limits specified in the "Technical data" chapter.
2.2 Foreseeable misuse
oAny use that extends beyond the proper use or any other use is misuse.
2.3 Fundamental safety instructions
The following safety instructions must be observed:
oRead the operating instructions carefully and observe them.
oHave work only carried out by qualified personnel/trained personnel.
oWear personal protective equipment and work carefully.
oObserve the operating instructions of the flowmeter and of the sensors.
3 Identification
3.1 Rating plate
1 2
3
Fig.1: Electronic unit data plate
1Serial number
2Type
3Connection assignments
4OIE 24en-GB Edition 2022-01 Operating instructions

4 Technical data
4.1 Dimensional drawing
4 Technical data
4.1 Dimensional drawing
72
52
93
93
60
16.5 16.5
20.5
A
B C
Fig.2: Housing dimensions
AOpening 20.5 mm for connecting tube (electronic unit - flow meter OME connection)
BOpening 16.5 mm for connection of power supply or pick up
COpening 16.5 mm for connection of power supply or pick up
Operating instructions OIE 24en-GB Edition 2022-01 5

4 Technical data
4.2 Connection field
4.2 Connection field
10-30V
10-30V
+
–
impuls target
current target
NPN
...external source
+
mA
INTERNAL EXTERNAL
+
+
10-30V
+
–
impuls target
current target
NPN
...external source
+
mA
INTERNAL EXTERNAL
Voltage
Reg.
8.2V
Fig.3: Connection panel for PNP sensors (left) / connection panel for NAMUR sensors (right)
4.3 Pin assignment
The following terminals are electrically connected internally:
o1 + 5 + 7 + 9 = Gnd
Connection Function Terminal
PNP/NAMUR sensor Flow meter transducer Gnd 1
Signal 2
Sensor supply 10 (PNP)
4 (NAMUR)
Output Analog output Gnd 5
Signal 6
Pulse output Transistor - 7
Transistor + 8
Power supply Electronic unit Gnd 9
Power supply 10 –
30VDC
10
4.4 Connection data
4.4.1 Supply
Parameter Unit Value
Power supply, type PD [VDC] 10...30
Power consumption max. [W] 0.625
4.4.2 Pulse input
Parameter Unit Value
Frequency min. [Hz] 0.1...10, adjustable (= 1/gate time)
Frequency max. [kHz] 6 (PNP)
4 (NAMUR)
Input impedance [kΩ] 47 (PNP, pull-down resistor)
0.82 (NAMUR, pull-down resistor)
Level high [V] >6.3
Level low [V] <2.5
6OIE 24en-GB Edition 2022-01 Operating instructions

4 Technical data
4.5 Display
4.4.3 Pulse output
Parameter Unit Value
Type NPN transistor, non-isolated
Frequency max. [Hz] 100
Voltage max. [V] 30
Current max. [mA] 300
Pulse width [ms] 0 / 5 / 100, adjustable
4.4.4 Analog output
Parameter Unit Value
Type Loop powered, set to ground (-)
Output [mA] 4...20
Power supply [VDC] 12...30
Load [Ω] 500 (at 24 V DC), max. 800
Accuracy
incl. temperature drift
[%] 0.5
Resolution [bit] 10
4.4.5 Ambient conditions
Parameter Unit Value
Storage temperature min.–max. [°C] -20...+80
Operating temperature min. - max. [°C] -20...+70
Air humidity (relative humidity, non-condensing) [%] 90
EMC interference emission/interference im-
munity
oEN 61000-6- 2
oEN 61000-6- 3
oEN61326
Protection class IP65
4.5 Display
Designation Data
Type Transflective LCD, with LED backlighting
Text display 2 lines / 7 characters (15 mm / 8 mm),
plus status information and keyword messages
Display language English
4.6 Weight
Parameter Unit Value
Weight [g] 225
4.7 Screw terminals
Parameter Unit Value
Cable cross-section max. [mm2] 1.5
4.8 Data storage
Parameter Value
Data storage for totals and settings At each shutdown
Operating instructions OIE 24en-GB Edition 2022-01 7

5 Function description
5.1 Functional principle
5 Function description
5.1 Functional principle
5.1.1 Usage
The electronic unit is designed for use with a KRAL flow meter.
Flow meters generate a specific number of pulses per flow volume unit –depending on the size and
working point. This device-specific characteristic is called the K factor (unit: pulses/litre) and is spe-
cified on the calibration certificate.
The pulse signals from a flow meter can be evaluated. Due to the pull-down resistor at the signal input,
the following signals are available:
oPNP / push-pull / active signals
oNamur
5.1.2 Volume measurement
The instantaneous value of the flow rate is calculated and displayed by measuring the time between a
series of pulses and the stored K-factor. In addition, the total number of measured pulses can be used
to display the total flow (volume) as a total value since the last reset of the unit. Values for the flow rate
represent the current instantaneous values, total values correspond to the totals since the last reset.
5.1.3 Electronic evaluation
The electronic unit receives signals from the pick up and calculates the measurements, which are
shown in the display and can be called up at the pulse output.
Electronic unit options:
oDisplay the measured volume in different units (l, m³, kg, lb, gal, galUS, bbl)
oFault information
o1 scalable pulse output (non-isolated transistor)
o1 scalable analogue output
5.1.4 Applications
The electronic unit is intended for use in a single-line measurement in combination with a flow meter.
Single-line measurement Components Functions
o1 flow meter
o1 pick up
o1 electronic unit BEM 200
oElectronic evaluation
oVolume measurement
o1 pulse output, passive
o1 analogue output, passive
Tab.2: Single-line measurement
8OIE 24en-GB Edition 2022-01 Operating instructions

6 Transportation, storage
6.1 Scope of delivery
5.1.5 Control panel
12
Fig.4: Control panel
1SELECT key
3CLEAR key
For information on operation. Ä Operation,Page14
6 Transportation, storage
6.1 Scope of delivery
The scope of delivery depends on the order option selected:
Order option Included in delivery
Standard oElectronic unit BEM 200 + flow meter OME (mounted)
- or -
oElectronic unit BEM 200 + flow meter OMP (mounted)
Accessories oElectronic unit BEM 200 + connecting element (not mounted)
- or -
oElectronic unit BEM 200 (not mounted, for wall mounting)
Tab.3: Included in delivery
6.2 Unpacking and checking the state of delivery
Personnel qualification: oTrained personnel
1. Upon delivery check the product for damage during transportation.
2. Report damage during transportation immediately to the manufacturer.
3. Dispose of packing material in accordance with the locally applicable regulations.
6.3 Transporting the electronic unit
Transport the electronic unit in the original packaging. Observe ambient conditions in the process
Ä Technical data,Page5.
6.4 Storing the electronic unit
Store the electronic unit in the original packaging in a cool and dry place. Observe ambient condi-
tions in the process Ä Technical data,Page5.
Operating instructions OIE 24en-GB Edition 2022-01 9

7 Installation, removal
7.1 Dangers during installation, removal
7 Installation, removal
7.1 Dangers during installation, removal
The following safety instructions must be strictly observed:
oHave all work only carried out by electricians.
oDo not take apart the electronic unit.
7.2 Installing the electronic unit
In the standard scope of supply, the electronic unit is offered in conjunction with the OME or OMP flow
meter. The electronic unit is already mounted on the flow meter. In this case, no additional installation
work is required.
For flow meters already in use, the electronic unit can be ordered as an accessory. Always observe the
corresponding operating instructions when mounting the electronic unit on the OME or OMP flow
meter.
7.3 Dismantling the electronic unit from OME
Personnel qualification: oElectrician
Personal protective equipment: oWork clothing
Aids: oOpen-end spanner
Requirement:
üPower supply switched off
5 6 7
8
9
10
11
12
1
2
3
4
1. Loosen the Phillips screws5 and remove the front cover4 of the electronic unit.
2. Remove the connection cable of the power supply7, the pick up2 and the pulse output (if used)
from the connection panel6.
3. Unscrew the hexagon nut1 in the housing8 of the electronic unit to loosen the connecting
tube10 and remove the electronic unit.
4. Unscrew the connecting tube from the flow meter12.
10 OIE 24en-GB Edition 2022-01 Operating instructions