Kobold MIM Series User manual

Operating Instructions
for
Electromagnetic Flowmeter
Model: MIM

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page 2 MIM K02/1217
We don’t accept warranty and liability claims neither upon this publication nor in
case of improper treatment of the described products.
The document may contain technical inaccuracies and typographical errors. The
content will be revised on a regular basis. These changes will be implemented in
later versions. The described products can be improved and changed at any time
without prior notice.
© Copyright
All rights reserved.
1. Contents
1.Contents........................................................................................................2
2.Note ..............................................................................................................4
3.Instrument Inspection....................................................................................4
4.Regulation Use..............................................................................................4
5.Environment..................................................................................................5
6.Operating principle ........................................................................................5
6.1General ................................................................................................5
6.2Minimum electrical conductivity / gas bubbles .....................................5
6.3Deposits...............................................................................................6
6.4Measuring electrodes...........................................................................6
7.Mechanical connection..................................................................................7
7.1Check operating conditions..................................................................7
7.2Installation............................................................................................7
8.Electrical Connection ....................................................................................9
8.1General ................................................................................................9
8.2Pin assignment ..................................................................................10
9.Operation and menu structure ....................................................................11
9.1General ..............................................................................................11
9.2Measuring mode ................................................................................12
9.3Menu Mode........................................................................................15
10.Device configuration....................................................................................16
10.1Sequence of device parameterization................................................16
10.2Overview of the menu functions / device parameters ........................17
10.3Display ...............................................................................................20
10.4Measurement.....................................................................................20
10.5Outputs ..............................................................................................23
10.6User service.......................................................................................27
10.7Service / Factory service....................................................................28
10.8Information.........................................................................................28
10.9Device default settings.......................................................................29
11.Technical Information..................................................................................30
12.Order Codes ...............................................................................................31
13.Dimensions .................................................................................................32
14.EU Declaration of Conformance..................................................................33

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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

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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, Pipe, 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:
Electromagnetic Flowmeter model: MIM
Operating Instructions
4. Regulation Use
The MIM flowmeter has been specially developed for the measurement, display
and transmission of both, flow rates and temperature of conductive liquids. The
instrument has a graphic TFT display, rotatable in 90 ° steps and can display flow
rate, temperature, daily volume counter (resettable) and total volume counter in
the units of measurement selected by the operator. A clear menu guides the user
through the parameterization of the device, which largely eliminates the need to
look into the operating instructions.
Any use of the magnetic flowmeter, model: MIM, which exceeds the
manufacturer’s specification, may invalidate its warranty. Therefore, any resulting
damage is not the responsibility of the manufacturer. The user assumes all risk
for such usage.

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5. Environment
The MIM device with stainless steel housing and stainless steel electrodes is
weatherproof and conforms to protection class IP67. The meter is designed for
harsh indoor or outdoor environments and complies with Directive 2014/30/EU
(Electromagnetic Compatibility).
6. Operating principle
6.1 General
The new KOBOLD MIM Flowmeter is designed to measure and monitor small
and medium flows of conductive fluids in piping.
The device works on the magnetic-inductive measuring principle. According to
Faraday's law of induction, a voltage is induced in a conductor moving in a
magnetic field. The electrically conductive measuring medium corresponds to the
moving conductor in the process. The voltage induced by the measuring medium
is proportional to the flow rate and thus a measure of the volume throughput.
Prerequisite is a minimum electrical conductivity of the flowing medium. The
induced voltage is fed to a measuring amplifier via two electrodes, which are in
conductive contact with the medium. The volume flow is calculated via the
defined pipe diameter.
The measurement is independent of the medium and its physical properties such
as density, viscosity and temperature. The device can be configured via the
display. There are two outputs available, which can each be configured as alarm,
frequency, pulse, voltage, and current outputs.
The device also provides a dosing function. The dosing function can be activated
in measuring mode via the four buttons. The dosing function controls simple filling
tasks and also measures flow rate and partial amount.
6.2 Minimum electrical conductivity / gas bubbles
For the correct function of the instrument, it is necessary that the flow channel is
always completely filled with medium. From a minimum electrical conductivity of
20 μS / cm, the MIM operates within the specified error limits. The conductivity of
the medium is constantly monitored by the device electronics. If the electronics
detects that the minimum conductivity has fallen below min. value, this is signaled
by displaying the error message 'Empty pipe' and the flow rate reading is set to
'0'. Air bubbles in the flowing medium or media with varying conductivity in the
range of the minimum conductivity can disturb the measuring function and reduce
the measuring accuracy of the MIM. Gases contained in the liquid are also
measured as a volume flow and lead to measurement errors. If necessary, install
appropriate vents in the flow of the unit.

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6.3 Deposits
Minor deposits on the measuring tube generally do not affect the measuring
accuracy unless their conductivity deviates significantly from the liquid. For liquids
that have a tendency to deposit, periodically inspect the meter tube and, if
necessary, clean it.
6.4 Measuring electrodes
The MIM uses electrodes with galvanic tapping. They are in direct contact with
the medium. The standard electrodes are made of stainless steel 1.4404.

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7. Mechanical connection
7.1 Check operating conditions
flow rate
max. operating pressure
max. operating temperature
In general, MIM is subjected to the same loads as the piping into which it is
installed. The MIM 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.
7.2 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.
Mechanically secure the inlet and outlet pipe at a distance of 50 mm from the
connections.
Avoid valves or large reduction on the inlet section (this increases the
inaccuracy of measurements).
Check the leak tightness of the connections.
While mounting MIM hold the flowmeter from spanner surface (not
from the housing) with the help of spanner.
Take into account the tightening torque.
Nominal size Tightening torque
½“ 22 to 24 Nm
¾“ 28 to 30 Nm
1“ 28 to 30 Nm

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Inlet and outlet run
Installation from top to bottom avoid these installation locations
Gas bubbles,
particle
Free outlet

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8. Electrical Connection
8.1 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.

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8.2 Pin assignment
Configurable output functions:
Out 1 Out 2
analogue output 4-20 mA analogue output 4-20 mA
analogue output 0-20 mA analogue output 0-20 mA
analogue output 0-10 V analogue output 0-10 V
alarm output alarm output
pulse output pulse output
frequency output frequency output
Connection example:
OUT2: analogue output 4-20 mA
OUT1: analogue output 0-10 V

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9. Operation and menu structure
9.1 General
9.1.1 Operation of the optical buttons
An optical button is located at each corner of the TFT display. The operability of
the respective buttons is signaled by blue backlighting; therefore non-backlit
buttons are disabled and cannot be operated. To operate the keys, the finger
must be placed on the key-dome and raised again. The orange background of the
button symbols is briefly displayed in blue as visual feedback for a detected key
press.
To avoid accidental operation in measuring mode, the operator must hold down
the menu button for 3-5 seconds to activate the function. If the menu button is
held down for more than 3 seconds, the blue backlighting will begin to flash to
alert the user to release the button.
The operation of the optical buttons can also be done with gloves or other
optically reflective objects, light dirt on the surface usually does not interfere with
the key function.
9.1.2 Function of the control buttons
The function of each control key can be recognized by the respective symbol
displayed in the corners of the TFT display.
key symbol designation function
Measuring mode menu mode
menu mode
Activate menu
mode
hold 3-5 sec.
-
info display opens the info
menu -
down -
Scroll down menu /
decrease numeric
value when entering
numeric value
Deactive optical button
Optical button active

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key symbol designation function
Measuring mode menu mode
up -
Menu scroll up /
Increase the number
value for numeric
value input
forward -
Menu level lower /
forward (last menu
level: Save value)
backward -
Menu function: menu
level higher / back
(last step: exit menu)
9.2 Measuring mode
After applying the supply voltage, the device starts in measuring mode. In this
mode, the measured values of the respective measuring variables are
continuously recorded; the current instantaneous flow values, temperature values
and the volume counter readings are cyclically calculated and displayed
according to the type of display.
In addition to the main display, the states and configuration of the outputs are
shown in the display. If the corresponding output is configured as an alarm
output, the status is also displayed with a green or red background color. If the
background color is green, the set threshold value is exceeded; if it is red, the
current value is still under threshold.

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Measurement Mode Display Layout 'Single'
The measurement variables are represented by their corresponding symbols:
The outputs and their status are shown on the display as follows:
The measured variables flow, temperature and volume counter can in principle be
assigned to each output function. The assignment of the respective output is
indicated by the display of the symbol of the measuring variable. The
representation of the assignment is independent of the set display layout (single,
dual).

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Measurement Mode Display Layout 'Dual'
9.2.1 Display area of the flow meters
The number of digits displayed on the volume counter display (partial and total
volumetric counters) is limited to max. 8 digits. The partial and total volumetric
meters therefore have a smaller font size than the flow and temperature display.
If the 8-digit display range of the meter is exceeded, this is indicated by the
display of 8 minus characters (--------). In this case, the meter reading can no
longer be read. The user now has the option of bringing the counter reading back
into the display area by changing the volume counter unit.

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9.3 Menu Mode
In menu mode, all device parameters can be set. The individual parameters are
arranged in menu groups by function. While the menu mode is activated, the
signal processing and the outputs are still active in the background. However, all
display parameters and outputs are updated after exiting the menu mode or in the
measuring mode.
Note: The menu mode will not exit automatically after a certain time
without using the buttons. The menu mode remains active until the user
presses the button to the measuring mode.
9.3.1 Parameter setting
9.3.1.1 List Selection
Parameters with predefined selection values are defined by means of list
selection. The currently selected menu item is displayed in orange text. The
selection can be moved with the keys, the key
is used to accept the selection.
To activate the menu mode, press the button for 3-5 seconds. The
parameters are divided into main groups and subgroups.
The buttons are used to select the main groups. In the main menu
not all menu groups can be shown on the display at the same time, the list of
individual menu items then scrolls up or down when the selection has reached
the top or bottom. To choose the selection, the key is pressed and the
device jumps to the corresponding submenu or parameter setting level. For
selection of predefined parameter values and are
used. After changing the value of the parameter and confirming with the
parameter is saved and the return to the higher menu level. To return to the main
menu or to exit the menu mode, press (repeatedly) .

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9.3.1.2 Numerical value input
When setting parameters with a numerical value, the assigned unit is always
displayed below the input field in square brackets in the input function. The
maximum size and the number of decimal places are fixed and cannot be
changed. After calling the input function, first the left, outer digit is displayed in
orange. This position can now be adjusted either with the keys in
the value from 0 to 9. By pressing the key , the entry point moves to the
right and the next digit can be changed. By pressing the key , the editing
point can be moved to the left again. If the editing point is on the far right, the set
value is saved by pressing the key again and switched to the higher-
level menu function.
10. Device configuration
10.1 Sequence of device parameterization
The flowmeter MIM is pre-configured in factory. Changing the parameters
"Measuring range" and "Sensor constant" or "K factor" is therefore not permitted.
The adjustment of these parameters is only possible on the part of Kobold-
factory.
In the event of subsequent changes to volume or throughput units, the dependent
parameters are converted and adjusted accordingly. However, the limit
parameters of the switching outputs must always be checked and adjusted
manually when adjusting volume or throughput units - these are not automatically
converted.
An accidental change of the parameterization can be revised by the function
"Reset factory setting" in the menu Service / User menu / Factory setting.

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10.2 Overview of the menu functions / device parameters
The Kobold flowmeter MIM gives user the opportunity to make the
parameterization easily via the settings menu. In the following table, the menu
structure is structured by level. Using this table, each parameter and function of
the device can be set and configured.
Menu
level Sublevel Parameter level
Subparameter
level 1
Sub-
parameter
level 2
Sub-
parameter
level 3
Description Value range Default
value
Display
Refresh [sec]
n.A.
n.A. n.A.
Sets display refresh
rate 0.5-10 0.5 sec
Orientation
rotate CW rotates the display
90° clockwise
n.A n.A
rotate CCW
rotates the display
90° counter
clockwise
Layout
Single
shows only one
input variable on
the main display n.A n.A
Dual
shows two input
variables on the
main display
Display value
Upper display List selection
variable to be
displayed on main
or upper display
(Variables depend on
the type of sensor
connected. For MIM 4
Variables available i.e.
Flow, Volume,
Temperature, Part
volume)
n.A
Lower display List selection
variable to be
displayed on lower
display
Measure-
ment
Flow
Unit List selection sets flow units
ml/m, L/m, L/h, m3/h,
galUS/m, galUS/h,
galUK/m, galUK/h, User
L/m
Cut off numerical input suppresses flow
below this value
0 ≤Value ≤M. range
start 0.04
Volume
Counting type absolute/
bidirectional
sets the counting
method for
accumulated
totalizer
n.A. absolute
Unit List selection sets volume units ml, L, m3, galUS,
galUK, User L
Temperature Unit List selection sets temperature
units °C, °F, User °C
Part Volume
Counting type absolute/
bidirectional
sets the counting
method for partial
totalizer
n.A. absolute
Unit List selection sets volume units ml, L, m3, galUS,
galUK, User L
Memory reset Yes/No resets partial
totalizer n.A. n.A

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Menu
level Sublevel Parameter level
Subparameter
level 1
Sub-
parameter
level 2
Sub-
parameter
level 3
Description Value range Default
value
Output 1/
Output 2
Hier wird erst
die Variable
ausgewählt,
die
ausgegeben
werden sollte
The user is
supposed to
select the
variable he
wants to give
out as output
Flow
Alarm Output
Function
List
selection
sets function of
alarm output Limit/Window Limit
Output Type sets characteristic
of output NPN/PNP/PP NPN
Switch
Function
sets switching
function NO/NC NO
Threshold
numerical
input
sets threshold M. range start ≤Value
≤M. range End 1 L/m
Hysteresis sets hysteresis -9999,0 ≤Value ≤
+9999,0 1 L/m
Suppression
factor switching delay
factor 0 ≤Value ≤60 0
4-20 mA
Value for
4 mA
sets variable value
for 4mA
M. range start ≤Value
< Value for 20 mA 0 L/m
Value for
20 mA
sets variable value
for 20mA
Value for 4 mA <Value
≤M. range End 100 L/m
0-20 mA
Value for
0 mA
sets variable value
for 0mA
M. range start ≤Value
< Value for 20 mA 0 L/m
Value for
20 mA
sets variable value
for 20mA
Value for 0 mA <Value
≤M. range End 100 L/m
0-10 V
Value for 0 V sets variable value
for 0V
M. range start ≤Value
< Value for 10 V 0 L/m
Value for
10 V
sets variable value
for 10V
Value for 0 V <Value ≤
M. range End 100 L/m
Frequency
output
max.
Frequency
sets max.
frequency to be
given out at Full
scale
50-1000 Hz 500 Hz
Overflow sets overflow in %
of max.freq
1-100 1%
Value for
0 Hz
sets variable value
for 0Hz
M. range start ≤Value
< Value for 0 Hz 0 L/m
Value for max
Hz
sets variable value
for max Hz
Value for 0 Hz <Value ≤
M. range End 100 L/m
Volume Pulse output
Pulse unit List
selection
sets volume units
for Pulse volume
ml, L, m3, galUS,
galUK, User L
Pulse volume numerical
input
sets volume
represented by one
pulse
0-999 1 L
Pulse width sets width of each
pulse 1-20000 1ms

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Menu
level Sublevel Parameter level
Subparameter
level 1
Sub-
parameter
level 2
Sub-
parameter
level 3
Description Value range Default
value
Temperature
Alarm Output
Function
List
selection
sets function of
alarm output Limit/Window Limit
Output Type sets characteristic
of output NPN/PNP/PP NPN
Switch
Function
sets switching
function NO/NC NO
Threshold
numerical
input
sets threshold M. range start ≤Value
≤M. range End 1 L/m
Hysteresis sets hysteresis -9999,0 ≤Value ≤
+9999,0 1 L/m
Suppressionf
actor switching delay
factor 0 ≤Value ≤60 0
4-20 mA
Value for
4 mA
sets variable value
for 4 mA
M. range start ≤Value
< Value for 20 mA 0 L/m
Value for
20 mA
sets variable value
for 20 mA
Value for 4 mA <Value
≤M. range End 100 L/m
0-20 mA
Value for
0 mA
sets variable value
for 0 mA
M. range start ≤Value
< Value for 20 mA 0 L/m
Value for
20 mA
sets variable value
for 20 mA
Value for 0 mA <Value
≤M. range End 100 L/m
0-10 V
Value for 0 V sets variable value
for 0 V
M. range start ≤Value
< Value for 10 V 0 L/m
Value for
10 V
sets variable value
for 10 V
Value for 0 V <Value ≤
M. range End 100 L/m
Frequency
output
max.
Frequency
sets max.
frequency to be
given out at Full
scale
50-1000 Hz 500 Hz
Overflow sets overflow in %
of max.freq
1-100 1%
Value for
0 Hz
sets variable value
for 0Hz
M. range start ≤Value
< Value for 0 Hz 0 L/m
Value for max
Hz
sets variable value
for max Hz
Value for 0 Hz <Value ≤
M. range End 100 L/m
Part volume Pulse output
Pulse unit List
selection
sets volume units
for Pulse volume
ml, L, m3, galUS,
galUK, User L
Pulse volume numerical
input
sets volume
represented by one
pulse
0-999 1 L
Pulse width sets width of each
pulse 1-20000 1ms
User
Service
Change
Password
numerical input
n.A.
protects user
service with
password if it is set
other than 00000
00000-99999 00000
Factory reset Yes/No sets all the settings
to factory settings
n.A.
n.A.
Lock Menu
Lock/Unlock
locks the menu
entry using same
password as set
under 'Change
Password'
Unlock
Factory
Service Password protected
Device
Status Kobold Logo with Firmware version

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10.3 Display
10.3.1 Refresh
Parameter "Refresh" defines the time interval within which the measuring
variables are displayed. The state of the outputs (current output, voltage output,
frequency output) is also recalculated after the measuring time has expired.
The "Refreshrate" can be increased in steps of 0.5 sec. to 10 sec. An increase in
the refresh rate time causes on one hand an increased "filtering" of the input
signals, but also an increased reaction time for the outputs.
10.3.2 Orientation
With the menu item "Orientation" the display can be rotated either clockwise or
counterclockwise in 90 ° increments. As the display rotates, both the display
contents and the function of the 4 control buttons are turned.
10.3.3 Layout
This parameter can be used to configure the display to either show one
measurement variable or two measurement variables.
10.3.4 Display value
With the aid of this parameter, the measurement variables provided by the
transmitter can be displayed. Depending on the 'Layout' display, either one or two
measuring variables can be displayed.
10.4 Measurement
The Measurement menu lists the measurement variables that the transmitter
provides. For magnetic inductive flowmeter, these are:
• Flow
• Volume (total volume counter)
• Temperature
• Part volume
Each measurement variable is still divided into its own submenu. In the submenu,
all parameters relating to the respective measuring variables can be adjusted.