Kobold MIK User manual

Operating Instructions
for
Compact Magnetic-Inductive
Flow Meter
Model: MIK

MIK
page 2 MIK K10/0817
1. Contents
1.Contents........................................................................................................2
2.Note ..............................................................................................................3
3.Instrument Inspection....................................................................................3
4.Regulation Use..............................................................................................3
5.Operating Principle........................................................................................4
5.1General ................................................................................................4
5.2Minimum electrical conductivity / contained gases ..............................4
5.3Deposits...............................................................................................5
5.4Measuring electrodes...........................................................................5
6.Mechanical Connection.................................................................................6
6.1Check operating conditions..................................................................6
6.2Installation............................................................................................6
7.Electrical Connection ....................................................................................8
7.1General ................................................................................................8
7.2MIK-...S300..........................................................................................8
7.3MIK-...S30D .........................................................................................8
7.4MIK-...F300; MIK-...L3x3......................................................................9
7.5MIK-...L443 ..........................................................................................9
7.6MIK-...C30............................................................................................9
7.7MIK-...C34............................................................................................9
7.8MIK-...Ex4R, MIK-...Gx4R..................................................................10
8.Operation ....................................................................................................11
8.1Switch point setting MIK-...S300, MIK-…S30D ..................................11
8.2Counter electronics MIK-…Ex4R .......................................................11
8.3Dosing electronics MIK-…Gx4R ........................................................11
9.Adjustments – Compact Electronics MIK-...C3.. .........................................12
9.1Button function...................................................................................12
9.2Settings..............................................................................................12
9.3Value setting ......................................................................................13
9.4Set-up mode ......................................................................................14
9.5Main menu items ...............................................................................16
10.Maintenance ...............................................................................................19
11.Technical Information..................................................................................20
12.Order Codes ...............................................................................................23
13.Dimensions .................................................................................................24
14.EU Declaration of Conformance..................................................................27
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
D-65719 Hofheim
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.kobold.com

MIK
MIK K10/0817 page 3
2. Note
Please read these operating instructions before unpacking and putting the unit
into operation. Follow the instructions precisely as described herein.
The devices are only to be used, maintained and serviced by persons familiar
with these operating instructions and in accordance with local regulations
applying to Health & Safety and prevention of accidents.
When used in machines, the measuring unit should be used only when the
machines fulfil the EC-machine guidelines.
as per PED 2014/68/EU
In acc. with Article 4 Paragraph (3), "Sound Engineering Practice", of the
PED 2014/68/EU no CE mark.
Diagram 8, Pipelines, Group 1, dangerous fluids
3. Instrument Inspection
Instruments are inspected before shipping and sent out in perfect condition.
Should damage to a device be visible, we recommend a thorough inspection of
the delivery packaging. In case of damage, please inform your parcel service /
forwarding agent immediately, since they are responsible for damages during
transit.
Scope of delivery:
The standard delivery includes:
Compact Magnetic-Inductive Flow Meter model: MIK
Operating Instructions
4. Regulation Use
Any use of the Compact Magnetic-Inductive Flow Meter, model: MIK, which
exceeds the manufacturer’s specifications, may invalidate its warranty. Therefore,
any resulting damage is not the responsibility of the manufacturer. The user
assumes all risk for such usage.

MIK
page 4 MIK K10/0817
5. Operating Principle
5.1 General
The new KOBOLD flow meter Type MIK is used for measuring and monitoring
smaller and medium-sized flow of conductivity liquids in pipes. The device
operates according to the electromagnetic measuring method. According to
Faraday’s Law of electromagnetic induction a voltage is induced in a conductor
moving through a magnetic field. The electroconductive measuring medium acts
as the moved conductor. The voltage induced in the measuring medium is
proportional to the flow velocity and is therefore a value for the volumetric flow.
The flowing media must have a minimum conductivity. The induced voltage is
picked up by two sensing electrodes which are in contact with the measuring
medium and sent to the measuring amplifier. The flow rate will be calculated
based on the cross sectional area of the pipe.
The measurement is not depending on the process liquid and its material
properties such as density, viscosity and temperature.
The device may be equipped with a switch, frequency or analogue output.
Moreover, there is a compact electronic system to be selected from, which
contains a digital display, a switch and an analogue output.
The device series is completed by an optionally obtainable dosing and counter
electronic system. The counter electronic system shows the current flow rate on
the first line of the display and shows the partial or overall volume on the second
line. A dosing electronic system controls simple filling duties and also measures
the flow rate, overall volume and filling volume. The analogue output and two
relay outputs can be utilised for the further processing of signals.
5.2 Minimum electrical conductivity / contained gases
It is necessary for the correct function of the device that the current canal is
always filled completely with medium.
As of a minimum electrical conductivity of 30 µS/cm the MIK works within the
guaranteed margins of error. The conductivity of the medium is continuously
monitored by the device’s electronic system. If the electronic system registers
that the conductivity has under-run minimum, the output signal is suppressed for
2 seconds, after which the value for zero flow is output.
Air bubbles in the flowing medium or media with changing conductivity in the
range of the minimum conductivity can interfere with the measuring function and
reduce the MIK’s measuring accuracy.
The gases contained in the fluid are included in the volume flow measurements
and consequently cause erroneous measurements. If necessary, suitable vents
should be fitted upstream in the device.

MIK
MIK K10/0817 page 5
5.3 Deposits
Minor deposits on the measuring tube do not compromise the accuracy of
measurement in general, as long as their conductivity does not seriously deviate
from that of the fluid. In the case of fluids that have a tendency to deposit
sediment, the measuring tube should be checked at regular intervals and cleaned
if necessary.
5.4 Measuring electrodes
The electrodes used with the MIK have a galvanic pick-off. They are in direct
contact with the fluid and are fitted opposite one another, and insulated from the
measuring tube. The standard electrodes are made of 1.4404 stainless steel or
Hastelloy C4.

MIK
page 6 MIK K10/0817
6. Mechanical Connection
6.1 Check operating conditions
flow rate
max. operating pressure
max. operating temperature
In general the MIK is subjected to the same loads as the piping into which it is
installed. The MIK should therefore be kept away from extreme loads, such as
pressure surges with strong, dynamic pipe movements, vibrations in the proximity
of centrifugal pumps, high temperature media, flooding etc.
6.2 Installation
Remove all packing materials and transport retainers and ensure that no such
materials remain in the device.
It can be installed in vertical, horizontal or rising pipes. Flow in direction of the
arrow.
Avoid pressure and tensile load.
Mounting the inlet and outlet pipe in a distance of 50 mm from the connections.
Attention! The sensor housing made of PPS and PVDF is not
allowed to be subjected to a torsional stress during installation.
The connecting of the respective connection thread with the
pipeline should be adapted to the material used, over tightening
the connection will damage the sensor housing, a loose
tightening may result in loosening the connection.
Avoid valves or large reduction on the inlet section (this increases the
inaccuracy of measurements).
Check the leak tightness of the connections.

MIK
MIK K10/0817 page 7
in- and outlet
mounting top down avoid this mounting position
Gas bubbles
Particle
Free outlet

MIK
page 8 MIK K10/0817
7. Electrical Connection
7.1 General
Attention! Make sure that the voltage values of your system
correspond with the voltage values of the measuring unit.
Make sure that the supply wires are de-energised.
Connect the supply voltage and the output signal to the plug PIN’s as stated
below.
We recommend the use of wires with cross sectional area of min. 0,25 mm².
Attention! The measuring electrodes are galvanically connected
with the reference potential of the supply voltage and the signal
output.
7.2 MIK-...S300
7.3 MIK-...S30D
12
34
Output
N/C
Output
N/O
+Vs
GND
1
2
34
5
Output
N/O
Output
Common
Output
N/C
+Vs
GND

MIK
MIK K10/0817 page 9
7.4 MIK-...F300; MIK-...L3x3
Connection example MIK-...L3x3
1
2
34
+Vs
Signal
Out
n.c.
GND
7.5 MIK-...L443
7.6 MIK-...C30.. 7.7 MIK-...C34..
+Vs
Signal
Out
+Vs
GND
GND
1
2
34
+Vs
Signal
Out
n.c.
GND
+Vs
GND
1
2
34
5
+Vs
GND
GND
Switch out
1
0(4)-20 mA
1
2
34
5
Switch
Out 2
Switch
Out 1
+Vs
GND
GND

MIK
page 10 MIK K10/0817
7.8 MIK-...Ex4R, MIK-...Gx4R
Cable connection
Wire number MIK-...E14R
Counter electronics MIK-...G14R Dosing electronics
1 +24 VDC +24 VDC
2 GND GND
3 4-20 mA 4-20 mA
4 GND GND
5 n. c. Control 1*
6 Reset part quantity Control 2*
7 Relay S1 Relay S1
8 Relay S1 Relay S1
9 Relay S2 Relay S2
10 Relay S2 Relay S2
*Control 1<->GND: Start-dosing
Control 2<->GND: Stop-dosing
Control 1 <-> Control 2 <-> GND: Reset-dosing
Plug connection
-E34 R
+ Vs
Reset TM
0 (4) - 20 mA
GND
1
30 V / 2 A
AC/DC
34
5
1
3
4
5
6
S 2 8
d.c. *)
Output
*) Do not connect !

MIK
MIK K10/0817 page 11
8. Operation
The units are preset and after electrical connection ready for operation.
8.1 Switch point setting MIK-...S300, MIK-…S30D
Switch setting Switch point
0 Switch function deactivated
1 10 % of f.s.
2 20 % of f.s.
3 30 % of f.s.
4 40 % of f.s.
5 50 % of f.s.
6 60 % of f.s.
7 70 % of f.s.
8 80 % of f.s.
9 90 % of f.s.
Flow above switch point: DUO-LED green
Flow below switch point: DUO-LED red
8.2 Counter electronics MIK-…Ex4R
Operating please see Operating Instructions ZED-Z
8.3 Dosing electronics MIK-…Gx4R
Operating please see Operating Instructions ZED-D

MIK
page 12 MIK K10/0817
9. Adjustments – Compact Electronics MIK-...C3..
Connect the compact electronics according to previous connection diagram and
supply with the indicated power supply.
After power on, the measuring range (end current) will be shown for 3
seconds.
9.1 Button function
In the standard mode (measuring mode)
In the set-up mode
9.2 Settings
The following values can be changed in the compact electronic:
Scale range Factory setting
Switch point (SPo, SP1,SP2) 0...999 0,00
Hysteresis (HYS) -199...0 -0,00
Window point (duo point) (duo) Switch point ...999 --- (inactive)
Contact-type (Con, Co1, Co2) (no),(nc) or frequency (Fr)** no
Start current (S-C)* 000...999 000
End current (E-C)* 000...999 FS
Start current selection (SCS) 0-- (0 mA), 4-- (4 mA) 4 mA
Change Code (CCo) 000...999 000
* Start- and end value of flow relating to 0/4-20 mA
** not calibrated, frequency at f.s. approx. 500 -600Hz
:
Press 3 sec. Setup mode
: Switch point/Window point
: Next Step
: Change Value 3 sec
Standard mode
Md
Any time
Id
or do not press
a button for 20 sec

MIK
MIK K10/0817 page 13
9.3 Value setting
From the main menu item (for example: switch point, "SPo"), press the ""
button to set the value. The flow chart below illustrates the universal routine for
changing individual parameters.
[From the main menu item]
1. Adjust position
2. Adjust position
3. Adjust position
Adjust decimal point
Save selected value
or
enter new value.
[To the next main menu item]
save

MIK
page 14 MIK K10/0817
9.4 Set-up mode
Compact electronics MIK-...C30..
Changing code
N/O
Storing
Contact 1
function N/O
N/C
Frequency Storin
g
Filter
7 Levels Value setting
Hysteresis
Switching
point 2
Swichting
point 1
Code=
3 sec
Code entering
Value setting
Value setting
Value setting
Value setting
Contact 2
function
Value setting

MIK
MIK K10/0817 page 15
Compact electronics MIK-...C34..
Code entering
Filter
Windowpoint
Hysteresis
Switching point
3 sec
Code=
Start current
7sec
7sec
Contact function
Value setting
Value setting
Value setting
Value setting
Value setting
7 levels
N/O
N/C
Frequency
Value setting
Value setting
Storin
g
End current

MIK
page 16 MIK K10/0817
9.5 Main menu items
9.5.1 Switching point
The switching point is entered in the menu item "Spo, SP1, SP2". A setting value
between 000 and 999 can be selected. This value can also include a decimal
point. The decimal point can be set at two points (e.g. 10.0 or 1.00). If the display
value exceeds the set switch point, the electronic is activated and is signalised by
a lightning LED.
If the hysteresis is equal to zero and the window point is de-activated, the
electronic switches back whenever the indicated value falls below the switching
point.
9.5.2 Hysteresis
After the setting of the switching point, the hysteresis can be entered as a
negative value in the "HYS" menu. The standard hysteresis value is zero. In
operation condition this can lead to ambiguous switching behaviour, if the reading
fluctuates around the switching point or window point. In this case, increasing the
hysteresis can put things right. The hysteresis relates to the switching point and
the window point (switching point minus hysteresis; window point plus
hysteresis).
Example: Switch point 100 L/min; Hysteresis: -2.5 L/min
The electronics switches when 100 L/min is exceeded and switches back when
the reading under-runs below 97.5 L/min.
Changing code
Value setting
Save
Start
selection
7sec
4-20
mA
0-20
mA

MIK
MIK K10/0817 page 17
9.5.3 Window point (duo-point)
As well as the switching point, it is also to define a "duo" (duo-point), the window
point. This must be higher than the switching point. By using the window point
and the switching point it is possible to monitor the measurement value in a
certain range. The switching point limits the measurement range to smaller
values and the window point to larger values.
If the window point (duo-point) is less than or equal to the switching
point, an error report (Er4) will be indicated on the display and its
value is deleted and its function is invalid (in the case that the
window point and switching point out of adjustment).
The value is set in the same way as the switch point.
The window point is needed for process, in which monitoring of a certain
measurement range is necessary.
Example: Switching point: 100 L/min; window point: 150 L/min;
hysteresis: -1 L/min
The electronic switches when 100 L/min is exceeded. If the measured value
remains between 99 L/min (100-1) and 151 L/min (150+1), the contact will also
remain in active switching condition (LED on). If it exceeds 151 L/min or is below
99 L/min the electronic switches back.
Switching behaviour
The following diagram clarifies the switching behaviour of the electronics. The
contact closes (contact type: no) when exceeding below the switching point or
when it under-runs the window point. It only opens again if the window point plus
hysteresis is exceeded or if it drops below the switching point minus hysteresis.
An LED indicates the switching condition of the switching point.
9.5.4 Filter
The filter function "Filt" forms a running average from the measured values. The
following values can be set (see section 9.2 Settings):
1 / 2 / 4 / 8 / 16 / 32 / 64
They correspond to the number of samples used in the running average. The
filter value determines the dynamic behaviour of the display value. The larger the
adjusted value, the slower the display response. With a filter value of "1" the filter
is switched off, i.e. the display value is equal to the unfiltered measured value.
The integrated step function detector reacts to a change of value corresponding
to approx. 6.25% of the full scale value. As soon as a step function signal is
detected, the instantaneous measured value is directly indicated in the display.

MIK
page 18 MIK K10/0817
9.5.5 Contact type
The function of the transistor switching output is set in menu item "Con, Co1 or
Co2". The switching function switches from
no - N/O contact to
nc - N/C to
Fr – frequency (only Con and Co1)
and back.
N/O contact: contact closes when switch point is exceeded
N/C contact: contact opens when switch point is exceeded
Frequency: frequency output is proportional to flow value
9.5.6 Current output
The current output is selected in menu items
"S-C" Start current indicated value < > 0(4) mA
"E-C" End current indicated value < > 20 mA
"SCS" Start current selection (0-20 mA or 4-20 mA).
The indicated value at which 0(4) mA flow is entered in menu item start current.
The indicated value at which 20 mA flow is entered in menu item end current.
Time / t
Display
bar (°C)
Hysteresis
LED on
Time / t
Display
bar (°C)
Switchpoint
Hysteresis
LED on
Hysteresis
Window point
LED on
Flow
Flow

MIK
MIK K10/0817 page 19
9.5.7 Change code
The change code option "CCo" secures the unit against unauthorised tampering.
If the code is different from 000, the user must input the code immediately after
entering the adjustment mode.
10.Maintenance
The measurement device requires no maintenance if the measurement medium
does not cause deposits. In order to avoid problems, we recommend the
installation of a filter, such as the magnetic filter, model MFR.
If it is necessary to clean the sensor, the sensor can be rinsed with a suitable
liquid. Fibre parts or large particles can be carefully removed with a cleaning cloth
or similar.
Work on the electronics can only be performed by the factory, or the warranty is
otherwise voided.

MIK
page 20 MIK K10/0817
11.Technical Information
Range: see table
Accuracy: ±2.0 % of f.s.
Repeat accuracy: ±1 % of f.s.
(f.s. = full scale)
Measurement process: magnetic inductive
Electrical conductivity: min. 30 µS/cm
Mounting position: in all directions,
flow in direction of the arrow
Inlet / outlet: 3 x DN / 2 x DN
Media temperature: -20…+80 °C (max. +60 °C with PVC-
connection set)
Ambient temperature: -10…+60 °C
Max. pressure: 10 bar
Max. pressure loss: max. 0.25 bar at f.s.
Max. medium viscosity: 20 cSt ≤G1”
Max. medium viscosity: 70 cSt ≥G1½”
Wetted parts
Sensor housing: PPS or PVDF, fibreglass-reinforced
Connection set: PVC-glue connection or hose connection,
weld-on ends st. st. 1.4404
Electrodes: st. st. 1.4404 or Hastelloy C4
Seal: NBR, FPM or FFKM
Response time t90: approx. 1 s
Protection: IP 65
Connection/Ranges
Connection
Inside
diameter
[DN]
Flow velocity
at f.s. Measuring range
G ½ male 5 mm
approx. 0,45 m/s 10...500 mL/min
approx. 0,9 m/s 0,05...1,0 L/min
approx. 2,7 m/s 0,16...3,2 L/min
G ¾ male 10 mm approx. 2,2 m/s 0,5...10,0 L/min
approx. 3,5 m/s 0,8...16,0 L/min
G 1 male 15 mm approx. 3,0 m/s 1,6...32,0 L/min
approx. 4,7 m/s 2,5...50,0 L/min
G 1½ male 20 mm approx. 3,3 m/s 3,2...63 L/min
approx. 5,3 m/s 5,0...100 L/min
G 2 male 32 mm approx. 3,3 m/s 8...160 L/min
approx. 6,6 m/s 16...320 L/min
G 2¾ male 54 mm approx. 3,6 m/s 25...500 L/min
approx. 5,1 m/s 35...700 L/min