TD IFC100 en 140829 4000040504 R04

IFC 100 Technical Datasheet
Signal converter for electromagnetic flowmeters

• Simple and easy to install and start-up
• Diagnostics of device and application
• Extremely fast signal conversion
The documentation is only complete when used in combination with the relevant
documentation for the flow sensor.
© KROHNE 08/2014 - 4000040504 - TD IFC 100 R04 en

CONTENTS IFC 100
1 Product features 3
1.1 The more than economical solution ................................................................................ 3

1.2 Options and variants......................................................................................................... 5
1.3 Signal converter / measuring sensor combination possibilities..................................... 7
1.4 Measuring principle.......................................................................................................... 7
2 Technical data 8
2.1 Technical data................................................................................................................... 8

2.2 Dimensions and weights ................................................................................................ 17
2.2.1 Housing ................................................................................................................................. 17
2.2.2 Mounting plate, wall-mounted version ................................................................................ 20
2.3 Flow tables ..................................................................................................................... 21
2.4 Measuring accuracy ....................................................................................................... 23
3 Installation 24
3.1 Intended use ................................................................................................................... 24

3.2 Installation specifications .............................................................................................. 24
3.3 Mounting of the compact version................................................................................... 24
3.4 Mounting the wall-mounted housing, remote version .................................................. 25
3.4.1 Wall mounting ....................................................................................................................... 25
4 Electrical connections 27
4.1 Important notes on electrical connection...................................................................... 27

4.2 Preparing the signal and field current cables ............................................................... 27
4.2.1 Signal cable A (type DS 300), construction........................................................................... 27
4.2.2 Length of signal cable A........................................................................................................ 28
4.2.3 Connection diagram for signal and field current cable ....................................................... 29
4.3 Connecting the power supply......................................................................................... 30
4.4 Inputs and outputs, overview ......................................................................................... 32
4.4.1 Description of the CG number .............................................................................................. 32
4.4.2 Fixed, non-alterable output versions ................................................................................... 32
4.5 Laying electrical cables correctly .................................................................................. 33
5 Notes 34
2 www.krohne.com 08/2014 - 4000040504 - TD IFC 100 R04 en

IFC 100 PRODUCT FEATURES 1
1.1 The more than economical solution

The IFC 100 electromagnetic signal converter is designed to measure the flow velocity,
conductivity, volume and mass flow of electrically conductive, liquid media.
The signal converter can be combined with any measuring sensor, making it very widely used. In
terms of available housing versions, there is a compact variant, in which the signal converter is
connected to the measuring sensor, as well as a 0° and 45° version. If the measuring point is
difficult to access or the ambient conditions prevent the use of the compact variant, the signal
converter is available in a wall-mounted housing.
The IFC 100 was designed for applications requiring an economical measuring solution with a
high level of technology.
(signal converter in wall-mounted housing)
1 Large backlit graphic display with 4 push buttons to operate the signal converter without having to open the housing
2 Supply voltage: 100...230 VAC (standard) and 24 VDC or 24 VAC/DC (optional)
3 Communication with any third party system possible via Foundation Fieldbus, Profibus PA/DP or Modbus
08/2014 - 4000040504 - TD IFC 100 R04 en www.krohne.com 3

1 PRODUCT FEATURES IFC 100
Highlights
• Simple installation and start-up
• Available inputs and outputs: Current output (incl. HART®), pulse/frequency output, status
output and control input
• Large backlit graphic display with intuitive operation
• A variety of operating languages integrated as standard
• Maintenance free
• Excellent price/performance ratio
• Extremely quick signal conversion
• Higher accuracy by extended calibration
Industries
• Water & Wastewater
• Agriculture
• Heating, Ventilation & Air Conditioning (HVAC)
• Machinery
• Power plants
Applications
• Measuring homogeneous media
• Water distribution networks and spray-irrigation systems
• Water treatment
• Environmental technology

1.2 Options and variants

Modular converter concept
Despite its somewhat different appearance, the
IFC 100 has many of the same functions as its "big
brother" IFC 300. Diagnostic function, conductivity
measurement and simple navigation to name but a
few.
This latest member of the converter family also has

a large number of fully-developed functions:
• various power supply versions (AC, DC, AC/DC)
• HART® as standard
• Foundation Fieldbus, Profibus PA/DP or Modbus
• optional Ex version available
(Compact version as 45° version)
Compact design in various versions

The IFC 100 C in the 0° version is ideal for
installation in vertical pipelines.
On the other hand, the 45° version improves the

readability of the display in specific applications.
The backlit display provides excellent readability

from long distances. The 4 push buttons make
operation, start-up and configuration simple.
In the 0° version, the signal converter can be rotated

in 90° increments allowing for customer-specific
installation position. The 45° version can only be
rotated in 180° increments.
(Compact version as 0° version)

1 PRODUCT FEATURES IFC 100
Remote version in wall-mounted housing

For temperature effects, vibration or in places that
are difficult to access, remote installation is possible
with the IFC 100 W.
A signal cable is used to connect the measuring

sensor and the converter for the purposes of power
supply and signal processing.
The electronics can be used in all housing versions

without having to be reconfigurated.
(signal converter in wall-mounted housing)
Diagnostics
The IFC 100 has been equipped with a wide variety of
diagnostic tools for device function and application
check.
• Conductivity measurement
• Electrode error
• Process or ambient temperature too high

1.3 Signal converter / measuring sensor combination possibilities
Measuring sensor Measuring sensor + signal converter IFC 100
Compact (0°/45° version) Remote wall-mounted

housing
OPTIFLUX 1000 OPTIFLUX 1100 C OPTIFLUX 1100 W
WATERFLUX 3000 WATERFLUX 3100 C WATERFLUX 3100 W
1.4 Measuring principle

An electrically conductive fluid flows inside an electrically insulated pipe through a magnetic
field. This magnetic field is generated by a current, flowing through a pair of field coils.
Inside of the fluid, a voltage U is generated:
U=v*k*B*D
in which:
v = mean flow velocity
k = factor correcting for geometry
B = magnetic field strength
D = inner diameter of flow meter
The signal voltage U is picked off by electrodes and is proportional to the mean flow velocity v
and thus the flow rate q. A signal converter is used to amplify the signal voltage, filter it and
convert it into signals for totalising, recording and output processing.
Figure 1-1: Measuring principle

1 Induced voltage (proportional to flow velocity)
2 Electrodes
3 Magnetic field
4 Field coils

2 TECHNICAL DATA IFC 100
2.1 Technical data

• The following data is provided for general applications. If you require data that is more
relevant to your specific application, please contact us or your local sales office.
• Additional information (certificates, special tools, software,...) and complete product
documentation can be downloaded free of charge from the website (Download Center).
Measuring system
Measuring principle Faraday's law of induction
Application range Continuous measurement of current volume flow, flow velocity, conductivity, mass
flow (at constant density), coil temperature of the measuring sensor
Design
Modular construction The measuring system consists of a measuring sensor and a signal converter.
Measuring sensor
OPTIFLUX 1000 DN10...150 / 3/8…6"
OPTIFLUX 2000 DN25...1200 / 1…48"
OPTIFLUX 4000 DN2.5...1200 / 1/10…48"
OPTIFLUX 5000 Flange: DN15...300 / ½…12"
Sandwich: DN2.5...100 / 1/10…4"
OPTIFLUX 6000 DN2.5...150 / 1/10…6"
WATERFLUX 3000 DN25...600 / 1...24"
With the exception of the OPTIFLUX 1000 and WATERFLUX 3000 all measuring
sensors are also available in an Ex version.
Signal converter
Compact version (C) IFC 100 C (0° & 45° version)
Remote version (W) IFC 100 W
All signal converters are also available in an Ex version.
Options
Outputs Current output (incl. HART®), pulse output, frequency output, status output and/or
limit switch
Counter 2 internal counters with a max. of 10 counter places (e.g. for counting volume
and/or mass units)
Verification Integrated verification, diagnostic functions: measuring device, empty pipe
detection, stabilisation
Communication interfaces HART® as standard
Foundation Fieldbus, Profibus PA/DP or Modbus

IFC 100 TECHNICAL DATA 2
Display and user interface

Graphic display LC display, backlit white.
Size: 128 x 64 pixels, corresponds to 59 x 31 mm = 2.32" x 1.22"
Ambient temperatures below -25°C / -13°F may affect the readability of the display.
Operating elements 4 push buttons for operator control of the signal converter without opening the
housing.
Remote control PACTwareTM (including Device Type Manager (DTM))
HART® Hand Held Communicator from Emerson Process
AMS® from Emerson Process
PDM® from Siemens
All DTMs and drivers are available free of charge from the manufacturer's website.
Display functions
Operating menu Setting the parameters using 2 measuring pages, 1 status page, 1 graphic page
(measured values and graphics are freely adjustable)
Language display texts (as Standard: English, French, German, Dutch, Portuguese, Swedish, Spanish, Italian
language package)
Eastern Europe: English, Slovenian, Czech, Hungarian
Northern Europe: English, Danish, Polish, Finnish, Norwegian
Southern Europe: English, Turkish
China: English, German, Chinese
Russia: English, German, Russian
Units Metric, British and US units selectable as required from lists for volume / mass flow
and counting, flow velocity, electrical conductivity, temperature
Measuring accuracy
Reference conditions Medium: water
Temperature: +20°C / +68°F
Pressure: 1 bar / 14.5 psi
Inlet section: ≥ 5 DN
Maximum measuring error Standard calibration: +0.3% of the measured value +1 mm/s, depending on the
measuring sensor
Extended calibration is selectable and special calibrations are available on request.
For detailed information and accuracy curves, refer to chapter "Accuracy".
Current output electronics: ±10 µA; ±100 ppm/°C (typically: ±30 ppm/°C)
Repeatability ±0.1%

Operating conditions
Temperature
Process temperature Refer to technical data for the measuring sensor.
Ambient temperature Depending on the version and combination of outputs.
It is a good idea to protect the converter from external heat sources such as direct
sunlight as higher temperatures reduce the life cycle of all electronic components.
Ambient temperatures below -25°C / -13°F may affect the readability of the display.
Storage temperature -40…+70°C / -40…+158°F
Pressure
Medium Refer to technical data for the measuring sensor.
Ambient pressure Atmospheric
Chemical properties
Electrical conductivity All media except for water: ≥ 5 µS/cm
(also refer to the technical data for the measuring sensor)
Water: ≥ 20 µS/cm
State of aggregation Conductive, liquid media
Solid content (volume) ≤ 10% for OPTIFLUX measuring sensors
Gas content (volume) ≤ 3% for OPTIFLUX measuring sensors
Flow rate For detailed information, refer to chapter "Flow tables".
Other conditions
Protection category acc. to IP66/67 (acc. to NEMA 4/4X)
IEC 529 / EN 60529
Installation conditions
Installation For detailed information, refer to chapter "Installation conditions".
Inlet / outlet sections Refer to technical data for the measuring sensor.
Dimensions and weights For detailed information refer to chapter "Dimensions and weights".
Materials
Signal converter housing Aluminium with a polyester topcoat
Measuring sensor For housing materials, process connections, liners, grounding electrodes and
gaskets, refer to technical data for the measuring sensor.

Electrical connection
General Electrical connection is carried out in conformity with the VDE 0100 directive
"Regulations for electrical power installations with line voltages up to 1000 V" or
equivalent national specifications.
Power supply 100…230 VAC (-15% / +10%), 50/60 Hz; non-Ex: standard; Ex: optional
240 VAC + 5% is included in the tolerance range.
24 VDC (-55% / +30%); only available as non Ex version
12 VDC - 10% is included in the tolerance range.
24 VAC/DC (AC: -15% / +10%; DC: -25% / +30%); non-Ex: standard; Ex: optional
12 V is not included in the tolerance range.
Power consumption AC: 7 VA
DC: 4 W
Signal cable Only necessary for remote versions.
DS 300 (type A)
Max. length: 600 m / 1950 ft (dep. on electrical conductivity and measuring sensor)
Cable entries Standard: M20 x 1.5 (8...12 mm)
Option: ½ NPT, PF ½
Outputs
General All outputs are electrically isolated from each other and from all other circuits.
All operating data and output values can be adjusted.
Description of abbreviations Uext = external voltage; RL = load + resistance;
Uo = terminal voltage; Inom = nominal current

Current output
Output data Volume flow, mass flow, diagnostic value, flow velocity, coil temperature,
conductivity
Settings Without HART®
Q = 0%: 0…20 mA; Q = 100%: 10…21.5 mA
Error identification: 20…22 mA
With HART®
Q = 0%: 4…20 mA; Q = 100%: 10…21.5 mA
Error identification: 3…22 mA
Operating data Basic I/Os Ex i I/Os
Active Uint, nom = 20 VDC -
I ≤ 22 mA
RL ≤ 750 Ω
HART® at terminals A
Passive Uext ≤ 32 VDC Uext ≤ 32 VDC
I ≤ 22 mA I ≤ 22 mA
U0 ≥ 2 V at I = 22 mA U0 ≥ 4 V
RL ≤ (Uext - U0) / Imax RL ≤ (Uext - U0) / Imax

Ui = 30 V
Ii = 130 mA
Pi = 1 W
Ci = 10 nF
Li ~ 0 mH
HART® at terminals A HART® at terminals C

HART®
Description HART® protocol via active and passive current output
HART® version: V5
Universal Common Practice HART® parameter: completely supported
Load ≥ 250 Ω at HART® test point;
Note maximum load for current output!
Multi-drop mode Yes, current output = 4 mA
Multi-drop address adjustable in operation menu 1…15
Device drivers Available for FC 375/475, AMS, PDM, FDT/DTM
Registration (HART Yes
Communication Foundation)

Pulse output / frequency output

Output data Pulse output: volume flow, mass flow
Frequency output: volume flow, mass flow, diagnostic value, flow velocity, coil
temperature, conductivity
Function Can be set as a pulse output or frequency output
Pulse rate/frequency 0.25...10000 Hz
For Modbus I/O: 0.25...1000 Hz
Settings Pulses per volume or mass unit or max. frequency for 100% flow
Pulse width: adjustable as automatic, symmetric or fixed (0.05...2000 ms)
Operating data Basic I/Os Ex i I/Os
Passive Uext ≤ 32 VDC -
fmax in operating menu set to
fmax ≤ 100 Hz:
I ≤ 100 mA
open:
I ≤ 0.05 mA at Uext = 32 VDC
closed:
U0, max = 0.2 V at I ≤ 10 mA
U0, max = 2 V at I ≤ 100 mA
fmax in operating menu set to -
100 Hz < fmax ≤ 10 kHz:
I ≤ 20 mA
open:
closed:
U0, max = 1.5 V at I ≤ 1 mA
U0, max = 2.5 V at I ≤ 10 mA
U0, max = 5.0 V at I ≤ 20 mA
NAMUR - Passive to EN 60947-5-6
open:
Inom = 0.77 mA
closed:
Inom = 4.7 mA
Ui = 30 V
Ii = 130 mA
Pi = 1 W
Ci =10 nF
Li = 0 mH
Operating data Modbus
Passive Uext ≤ 32 VDC
fmax in the operating menu set to fmax ≤ 1 kHz:
I ≤ 100 mA
open:
closed:
U0, max = 0.2 V at I ≤ 10 mA
U0, max = 2 V at I ≤ 100 mA

Low flow cut off

Function Switching point and hysteresis separately adjustable for each output, counter and
the display
Switching point Set in increments of 0.1%.
0…20% (current output, frequency output) or 0...±9.999 m/s (pulse output)
Hysteresis Set in increments of 0.1%.
0…5% (current output, frequency output) or 0…5 m/s (pulse output)
Time constant
Function The time constant corresponds to the elapsed time until 67% of the end value has
been reached according to a step function.
Settings Set in increments of 0.1s.
0…100 s
Status output / limit switch
Function and settings Adjustable as automatic measuring range conversion, display of flow direction,
counter overflow, error, switching point or empty pipe detection
Valve control with activated dosing function
Status and/or control: ON or OFF
Operating data Basic I/Os + Modbus Ex i I/Os
I ≤ 100 mA
open:
closed:
U0, max = 0.2 V at I ≤ 10 mA
U0, max = 2 V at I ≤ 100 mA
NAMUR - Passive to EN 60947-5-6
open:
Inom = 0.77 mA
closed:
Inom = 4.7 mA
Ui = 30 V
Ii = 130 mA
Pi = 1 W
Ci =10 nF
Li = 0 mH

Control input
Function Hold value of the outputs (e.g. for cleaning work), set value of the outputs to "zero",
counter and error reset, range change.
Start of dosing when dosing function is activated.
Operating data Basic I/Os Ex i I/Os + Modbus
Inom = 6.5 mA
at Uext = 24 VDC
Inom = 8.2 mA
at Uext = 32 VDC
Contact closed (on):

U0 ≥ 8 V
with Inom = 2.8 mA
Contact open (off):

U0 ≤ 2.5 V
with Inom = 0.4 mA
PROFIBUS DP
Description Galvanically isolated acc. to IEC 61158-2
PA profile version: class B, V3.02
Automatic data transmission rate recognition (max. 1.5 MBaud)
Bus address adjustable via local display at the measuring device
Function blocks 5 x analogue input, 3 x totaliser
Output data Volume flow, mass flow, volume counter 1 + 2, mass counter, velocity, coil
PROFIBUS PA
PA profile version: class B, V3.02
Current consumption: 10.5 mA
Permissible bus voltage: 9…32 VDC; in Ex application: 9...24 VDC
Bus interface with integrated reverse polarity protection
Typical error current FDE (Fault Disconnection Electronic): 6 mA
Bus address adjustable via local display at the measuring device
Function blocks 5 x analogue input, 3 x totaliser
Output data Volume flow, mass flow, volume counter 1 + 2, mass counter, velocity, coil
FOUNDATION Fieldbus
Current consumption: 10.5 mA
Permissible bus voltage: 9…32 VDC; in Ex application: 9...24 VDC
Bus interface with integrated reverse polarity protection
Link Master function (LM) supported
Tested with Interoperable Test Kit (ITK) version 5.2
Function blocks 3 x analogue input, 2 x integrator, 1 x PID
Output data Volume flow, mass flow, velocity, coil temperature, conductivity, electronics
temperature

Modbus
Description Modbus RTU, Master / Slave, RS485
Address range 1…247
Broadcast Supported with function code 16
Supported Baudrate 1200, 2400, 3600, 4800, 9600, 19200, 38400, 57600, 115200 Baud
Approvals and certificates

CE The device fulfils the statutory requirements of the EC directives. The manufacturer
certifies that these requirements have been met by applying the CE marking.
Non-Ex Standard
Hazardous areas
ATEX Optional (only OPTIFLUX 2100 C and OPTIFLUX 4100 C)
II 2 G Ex e [ia] mb IIC T4 (DN10...20; DN200...300; DN350...3000)
II 2 G Ex d e [ia] mb IIC T4 (DN25...150)
II 2 G Ex e [ia] mb q T4/T3 (DN25...150; DN200...300)
II 2 D Ex tD A21 IP64 T120°C (all nominal sizes)
Option (W version only)
II 2 G Ex e [ia] mb IIC T4
II 2 D Ex tD A21 IP64 T135°C
IECEx Optional (only OPTIFLUX 2100 C and OPTIFLUX 4100 C)
Ex e [ia] mb IIC T4 (DN10...20; DN200...300; DN350...3000)
Ex d e [ia] mb IIC T4 (DN25...150)
Ex tD A21 IP64 T120°C (all nominal sizes)
Ex e [ia] mb IIC T4
Ex tD A21 IP64 T135°C
FM/CSA Optional (only OPTIFLUX 2100 C and OPTIFLUX 4100 C)
Class I, Div 2, Group A, B, C and D
Class I, Div 2, Group A, B, C and D
Other standards and approvals
FM/CSA Ordinary location
Shock and vibration resistance IEC 68-2-27, IEC 68-2-64
Electromagnetic compatibility 2004/108/EC in conjunction with EN 61326-1 (A1, A2)
(EMC)
European Pressure Equipment PED 97/23 (only for compact versions)
Directive
NAMUR NE 21, NE 43, NE 53

2.2 Dimensions and weights

2.2.1 Housing
Wall-mounted version
Dimensions and weights in mm and kg

Dimensions [mm] Weight
[kg]
a b c d e f g h i k
Wall-mounted 161 40 87.2 120 155 241 95.2 257 19.3 39.7 Std: 1.9
version Ex: 2.4
Dimensions and weights in inch and lb

Dimensions [inch] Weight
[lb]
a b c d e f g h i k
Wall-mounted 6.34 1.57 3.43 4.72 6.10 9.50 3.75 10.12 0.76 1.56 Std: 4.2
version Ex: 5.3

Compact 0° version
1 4xM6

[kg]
a b c d e f g h
0° version 161 40 155 81.5 257 - - Ø72 Std: 1.9
Ex: 2.4

[lb]
a b c d e f g h
0° version 6.34 1.57 6.1 3.21 10.12 - - Ø2.83 Std: 4.2
Ex: 5.3

Compact 45° version
1 4xM6

[kg]
a b c d e f g h
45° version 161 40 155 184 27.4 45° 186 Ø72 Std: 2.1
Ex: 2.6

[lb]
a b c d e f g h
45° version 6.34 1.57 6.10 7.24 1.08 45° 7.32 Ø2.83 Std: 4.6
Ex: 5.7

2.2.2 Mounting plate, wall-mounted version
Dimensions in mm and inch

[mm] [inch]
a Ø6.5 Ø0.26
b 87.2 3.4
c 241 9.5

2.3 Flow tables

Flow rate in m/s and m3/h
Q100 % in m3/h
v [m/s] 0.3 1 3 12
DN [mm] Min. flow Nominal flow Max. flow

2.5 0.005 0.02 0.05 0.21
4 0.01 0.05 0.14 0.54
6 0.03 0.10 0.31 1.22
10 0.08 0.28 0.85 3.39
15 0.19 0.64 1.91 7.63
20 0.34 1.13 3.39 13.57
25 0.53 1.77 5.30 21.21
32 0.87 2.90 8.69 34.74
40 1.36 4.52 13.57 54.29
50 2.12 7.07 21.21 84.82
65 3.58 11.95 35.84 143.35
80 5.43 18.10 54.29 217.15
100 8.48 28.27 84.82 339.29
125 13.25 44.18 132.54 530.15
150 19.09 63.62 190.85 763.40
200 33.93 113.10 339.30 1357.20
250 53.01 176.71 530.13 2120.52
300 76.34 254.47 763.41 3053.64
350 103.91 346.36 1039.08 4156.32
400 135.72 452.39 1357.17 5428.68
450 171.77 572.51 1717.65 6870.60
500 212.06 706.86 2120.58 8482.32
600 305.37 1017.90 3053.70 12214.80
700 415.62 1385.40 4156.20 16624.80
800 542.88 1809.60 5428.80 21715.20
900 687.06 2290.20 6870.60 27482.40
1000 848.22 2827.40 8482.20 33928.80
1200 1221.45 3421.20 12214.50 48858.00

Flow rate in ft/s and US gallons/min

Q100 % in US gallons/min
v [ft/s] 1 3.3 10 40
DN [inch] Min. flow Nominal flow Max. flow

1/10 0.02 0.09 0.23 0.93
1/8 0.06 0.22 0.60 2.39
1/4 0.13 0.44 1.34 5.38
3/8 0.37 1.23 3.73 14.94
1/2 0.84 2.82 8.40 33.61
3/4 1.49 4.98 14.94 59.76
1 2.33 7.79 23.34 93.36
1.25 3.82 12.77 38.24 152.97
1.5 5.98 19.90 59.75 239.02
2 9.34 31.13 93.37 373.47
2.5 15.78 52.61 159.79 631.16
3 23.90 79.69 239.02 956.09
4 37.35 124.47 373.46 1493.84
5 58.35 194.48 583.24 2334.17
6 84.03 279.97 840.29 3361.17
8 149.39 497.92 1493.29 5975.57
10 233.41 777.96 2334.09 9336.37
12 336.12 1120.29 3361.19 13444.77
14 457.59 1525.15 4574.93 18299.73
16 597.54 1991.60 5975.44 23901.76
18 756.26 2520.61 7562.58 30250.34
20 933.86 3112.56 9336.63 37346.53
24 1344.50 4481.22 13445.04 53780.15
28 1829.92 6099.12 18299.20 73196.79
32 2390.23 7966.64 23902.29 95609.15
36 3025.03 10082.42 30250.34 121001.37
40 3734.50 12447.09 37346.00 149384.01
48 5377.88 17924.47 53778.83 215115.30

2.4 Measuring accuracy

Reference conditions
• Medium: water
• Temperature: +20°C / +68°F
• Pressure: 1 bar / 14.5 psi
• Inlet section: ≥ 5 DN
X [m/s]: flow velocity

Y [%]: deviation from the actual measured value (mv)
Standard calibration DN [mm] DN [inch] Accuracy Curve

OPTIFLUX 2100 / 4100 / 5100 / 6100 10…1200 3/8…48 0.3% of mv + 1 mm/s 1
OPTIFLUX 1100 10…150 3/8…6 0.4% of mv + 1 mm/s as 1 + 0.1%
OPTIFLUX 4100 / 5100 / 6100 2.5…6 1/10…1/4
WATERFLUX 3100 25...600 1...24 0.3% of mv + 1 mm/s 1
Extended calibration DN [mm] DN [inch] Accuracy Curve

OPTIFLUX 2100 / 4100 / 5100 / 6100 10…1200 3/8…48 0.2% of mv + 1 mm/s as 1 - 0.1%

3 INSTALLATION IFC 100
3.1 Intended use

The electromagnetic flowmeters are designed exclusively to measure the flow and conductivity
of electrically conductive, liquid media.
For devices used in hazardous areas, additional safety notes apply; please refer to the Ex
documentation.
If the device is not used according to the operating conditions (refer to chapter "Technical data"),
the intended protection could be affected.
3.2 Installation specifications

The following precautions must be taken to ensure reliable installation.
• Make sure that there is adequate space to the sides.
• Protect the signal converter from direct sunlight and install a sun shade if necessary.
• Signal converters installed in control cabinets require adequate cooling, e.g. by fan or heat
exchanger.
• Do not expose the signal converter to intense vibrations. The measuring devices are tested
for a vibration level in accordance with IEC 68-2-64.
3.3 Mounting of the compact version

The signal converter is mounted directly on the measuring sensor. For installation of the
flowmeter, please observe the instructions in the supplied product documentation for the
measuring sensor.

IFC 100 INSTALLATION 3
3.4 Mounting the wall-mounted housing, remote version

Assembly materials and tools are not part of the delivery. Use the assembly materials and tools
in compliance with the applicable occupational health and safety directives.
3.4.1 Wall mounting
Figure 3-1: Mounting the wall-mounted housing
1 Prepare the holes with the aid of the mounting plate. For further information refer to Mounting
plate, wall-mounted version on page 20.
2 Fasten the device securely to the wall with the mounting plate.

3 INSTALLATION IFC 100
Mounting multiple devices next to each other
[mm] [inch]
a Ø6.5 Ø0.26
b 87.2 3.4
c 241 9.5
d 310 12.2
e 257 10.1

IFC 100 ELECTRICAL CONNECTIONS 4
4.1 Important notes on electrical connection

Electrical connection is carried out in conformity with the VDE 0100 directive "Regulations for
electrical power installations with line voltages up to 1000 V" or equivalent national regulations.
• Use suitable cable entries for the various electrical cables.

• The measuring sensor and signal converter have been configured together at the factory. For
this reason, please connect the devices in pairs. Ensure that the measuring sensor constant
GK/GKL (see nameplates) are identically set.
• If delivered separately or when installing devices that were not configured together, set the
signal converter to the DN size and GK/GKL of the measuring sensor.
4.2 Preparing the signal and field current cables

Assembly materials and tools are not part of the delivery. Use the assembly materials and tools
in compliance with the applicable occupational health and safety directives.
4.2.1 Signal cable A (type DS 300), construction

• Signal cable A is a double-shielded cable for signal transmission between the measuring
sensor and signal converter.
• Bending radius: ≥ 50 mm / 2"
Figure 4-1: Construction of signal cable A

1 Stranded drain wire (1) for the inner shield (10), 1.0 mm2 Cu / AWG 17 (not insulated, bare)
2 Insulated wire (2), 0.5 mm2 Cu / AWG 20
3 Insulated wire (3), 0.5 mm2 Cu / AWG 20
4 Outer sheath
5 Insulation layers
6 Stranded drain wire (6) for the outer shield (60)

4 ELECTRICAL CONNECTIONS IFC 100
4.2.2 Length of signal cable A

For temperatures of the medium above 150°C / 300°F, a special signal cable and a ZD
intermediate socket are necessary. These are available including the changed electrical
connection diagrams.
Measuring sensor Nominal diameter Min. electrical Curve for signal

conductivity cable A
DN [mm] [inch] [µS/cm]
OPTIFLUX 1000 F 10...150 3/8...6 5 A1
OPTIFLUX 2000 F 25...150 1...6 20 A1
200...1200 8...48 20 A2
OPTIFLUX 4000 F 2.5...150 1/10...6 5 A1
200...1200 8...48 5 A2
OPTIFLUX 5000 F 2.5...100 1/10...4 5 A1
150...250 6...10 5 A2
OPTIFLUX 6000 F 2.5...150 1/10...6 5 A1
WATERFLUX 3000 F 25...600 1...24 20 A1
Figure 4-2: Maximum length of signal cable A

1 Maximum length of signal cable A between the measuring sensor and signal converter [m]
2 Maximum length of signal cable A between the measuring sensor and signal converter [ft]
3 Electrical conductivity of the medium being measured [μS/cm]

4.2.3 Connection diagram for signal and field current cable

The device must be grounded in accordance with regulations in order to protect personnel
against electric shocks.
• A shielded 2-wire copper cable is used as the field current cable. The shielding MUST be
connected in the housing of the measuring sensor and signal converter.
• The outer shield (60) is connected in the terminal compartment of the measuring sensor
directly via the shield and a clip.
• Bending radius of signal and field current cable: ≥ 50 mm / 2"
• The following illustration is schematic. The positions of the electrical connection terminals
may vary depending on the housing version.
Figure 4-3: Connection diagram for signal and field current cable
1 Electrical terminal compartment in signal converter
2 Signal cable A
3 Field current cable C
4 Electrical terminal compartment in measuring sensor
5 Functional ground FE

4.3 Connecting the power supply

The device must be grounded in accordance with regulations in order to protect personnel
against electric shocks.
• The housings of the devices, which are designed to protect the electronic equipment from
dust and moisture, should be kept well closed at all times. Creepage distances and
clearances are dimensioned to VDE 0110 and IEC 664 for pollution severity 2. Supply circuits
are designed for overvoltage category III and the output circuits for overvoltage category II.
• Fuse protection (IN ≤ 16 A) for the infeed power circuit, and also a separator (switch, circuit
breaker) to isolate the signal converter must be provided.
Figure 4-4: Terminal compartment for power supply

1 Retaining band of the cover
2 Cable entry for power supply, remote version
3 Cable entry for power supply, compact version
Version overview
Version Non-Ex Ex
100...230 VAC Standard Optional
24 VDC Standard -
24 VAC/DC Standard Optional

• Open the cover of the electrical terminal compartment by pressing down and pulling forwards
at the same time.
Figure 4-5: Power supply connection

1 100...230 VAC (-15% / +10%), 8 VA
2 24 VDC (-55% / +30%), 4 W
3 24 VAC/DC (AC: -15% / +10%; DC: -25% / +30%), 7 VA or 4 W
• Close the cover after the power has been connected.
100...230 VAC (tolerance range: -15% / +10%)

• Note the power supply voltage and frequency (50...60 Hz) on the nameplate.
240 VAC + 5% is included in the tolerance range.
24 VDC (tolerance range: -55% / +30%)

• Note the data on the nameplate!
• When connecting to functional extra-low voltages, provide a facility for protective separation
(PELV) (acc. to VDE 0100 / VDE 0106 and/or IEC 364 / IEC 536 or relevant national
regulations).
12 VDC - 10% is included in the tolerance range.
24 VAC/DC (tolerance range: AC: -15% / +10%; DC: -25% / +30%)

• AC: Note the power supply voltage and frequency (50...60 Hz) on the nameplate.
• AC/DC: When connecting to functional extra-low voltages, provide a facility for protective
separation (PELV) (acc. to VDE 0100 / VDE 0106 and/or IEC 364 / IEC 536 or relevant national
regulations).
12 V is not included in the tolerance range.

4.4 Inputs and outputs, overview

4.4.1 Description of the CG number
Figure 4-6: Marking (CG number) of the electronics module and output variants
1 ID number: 0
2 ID number: 0 = standard; 9 = special
3 Power supply
4 Display (language versions)
5 Output version
4.4.2 Fixed, non-alterable output versions

This signal converter is available with various output combinations.
• The grey boxes in the tables denote unassigned or unused connection terminals.
• In the table, only the final digits of the CG no. are depicted.
• Connection terminal A+ is only operable in the basic output version.
Basic outputs (I/O) (Standard)

CG no. Connection terminals
C C- D D- S A+ A A-
100 Sp / Cp passive 1 Pp / Sp passive 1 2 Ip + HART® passive 3
Ia + HART® active 3
1 Function change by software
2 Shielding
3 Function changed by reconnecting
Description of the used abbreviations

Ia Ip Current output active or passive
Pp Pulse/frequency output passive
Sp Status output / limit switch passive
Cp Control input passive

Ex i, Profibus PA + DP, Foundation Fieldbus and Modbus (I/O) (Option)

CG no. Connection terminals
D D- S C C- B B-
Ex i (Option)
300 Pp / Sp passive 1 2 Ip + HART® passive
PROFIBUS PA (Option)
D00 PA+ (1) PA+ (2) 2 PA- (1) PA- (2)
FOUNDATION Fieldbus (Option)

E00 V/D+ (1) V/D+ (2) 2 V/D- (1) V/D- (2)
PROFIBUS DP (Option)
F00 RxD/TxD+ / RxD/TxD- / 2 Termination Termination RxD/TxD+ / RxD/TxD- /
P / +B (1) N / -A (1) N / -T P / +T P / +B (2) N / -A (2)
Modbus (Option)
G00 Pp / Sp passive 2 +3.3 V; 560 Ω Common Sign. A (D0-) Sign. B (D1+)
1 Function change by software
2 Shielding
Supplementary instructions related to the communication busses Foundation Fieldbus, Profibus

PA/DP and Modbus are available on the website (Download Center).
4.5 Laying electrical cables correctly
Figure 4-7: Protect housing from dust and water
1 For compact versions with nearly horizontally-oriented cable entries, lay the necessary elec-
tric cables with a drip loop as shown in the illustration.
2 Tighten the screw connection of the cable entry securely.
3 Seal cable entries that are not needed with a plug.

5 NOTES IFC 100

IFC 100 NOTES 5

KROHNE product overview
• Electromagnetic flowmeters
• Variable area flowmeters
• Ultrasonic flowmeters
• Mass flowmeters
• Vortex flowmeters
© KROHNE 08/2014 - 4000040504 - TD IFC 100 R04 en - Subject to change without notice.
• Flow controllers
• Level meters
• Temperature assemblies
• Pressure transmitters
• Analysis products
• Products and systems for the oil & gas industry
• Measuring systems for the marine industry
Head Office KROHNE Messtechnik GmbH

Ludwig-Krohne-Str. 5
47058 Duisburg (Germany)
Tel.:+49 203 301 0
Fax:+49 203 301 103 89
info@krohne.com
The current list of all KROHNE contacts and addresses can be found at:
www.krohne.com

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IFC 100 Technical Datasheet

Signal converter for electromagnetic flowmeters

© KROHNE 08/2014 - 4000040504 - TD IFC 100 R04 en

1.1 The more than economical solution ................................................................................ 3

2.1 Technical data................................................................................................................... 8

3.1 Intended use ................................................................................................................... 24

4.1 Important notes on electrical connection...................................................................... 27

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1.1 The more than economical solution

(signal converter in wall-mounted housing)

08/2014 - 4000040504 - TD IFC 100 R04 en www.krohne.com 3

4 www.krohne.com 08/2014 - 4000040504 - TD IFC 100 R04 en

1.2 Options and variants

This latest member of the converter family also has

(Compact version as 45° version)

Compact design in various versions

On the other hand, the 45° version improves the

The backlit display provides excellent readability

In the 0° version, the signal converter can be rotated

(Compact version as 0° version)

08/2014 - 4000040504 - TD IFC 100 R04 en www.krohne.com 5

Remote version in wall-mounted housing

A signal cable is used to connect the measuring

The electronics can be used in all housing versions

(signal converter in wall-mounted housing)

6 www.krohne.com 08/2014 - 4000040504 - TD IFC 100 R04 en

1.3 Signal converter / measuring sensor combination possibilities

Measuring sensor Measuring sensor + signal converter IFC 100

Compact (0°/45° version) Remote wall-mounted

1.4 Measuring principle

Figure 1-1: Measuring principle

08/2014 - 4000040504 - TD IFC 100 R04 en www.krohne.com 7

2.1 Technical data

8 www.krohne.com 08/2014 - 4000040504 - TD IFC 100 R04 en

Display and user interface

08/2014 - 4000040504 - TD IFC 100 R04 en www.krohne.com 9

10 www.krohne.com 08/2014 - 4000040504 - TD IFC 100 R04 en

08/2014 - 4000040504 - TD IFC 100 R04 en www.krohne.com 11

RL ≤ (Uext - U0) / Imax RL ≤ (Uext - U0) / Imax

HART® at terminals A HART® at terminals C

12 www.krohne.com 08/2014 - 4000040504 - TD IFC 100 R04 en

Pulse output / frequency output

08/2014 - 4000040504 - TD IFC 100 R04 en www.krohne.com 13

Low flow cut off

14 www.krohne.com 08/2014 - 4000040504 - TD IFC 100 R04 en

Contact closed (on):

Contact open (off):

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Approvals and certificates

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2.2 Dimensions and weights

Dimensions and weights in mm and kg

Dimensions and weights in inch and lb

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Dimensions and weights in mm and kg

Dimensions and weights in inch and lb

18 www.krohne.com 08/2014 - 4000040504 - TD IFC 100 R04 en

Compact 45° version

Dimensions and weights in mm and kg