JUMO CTI-750 User manual

JUMO CTI-750
Inductive Conductivity/Concentration and
Temperature Transmitter with Switch Contacts
Operating manual
20275616T90Z001K000
V3.00/EN/00488788

WARNING!
A sudden failure of the instrument or of a sensor connected to it could result in dangerous
overdosing. Please take suitable precautionary measures for this case.
NOTE!
All the nececssary settings are described in this manual. However, if any difficulties should
arise during start-up, please do not carry out any unauthorized manipulations. You could
endanger your righs under the instrument warranty!
NOTE!
Resetting the LC display
If the brightness/contrast setting is such that the text in the display is not readable, the
basic setting can be restored as follows:
✱Switch off the supply voltage.
✱Switch on the supply voltage and immediately keep the keys and held down.
Resetting the operating language to "English"
If the operating language has been set and you cannot understand the text of the display,
the language can be set to "English" with the Administrator password 7485. Thereafter, the
desired language can be set in ADMINISTRATOR LEVEL / DEVICE DATA / .... .

Contents
1 Typographical conventions ...................................................... 5
1.1 Warning signs ..............................................................................................5
1.2 Note signs ....................................................................................................5
2 General ....................................................................................... 6
2.1 Foreword ......................................................................................................6
2.2 Structure ......................................................................................................6
3 Inductive conductivity measurement ...................................... 8
3.1 Range of Applications ..................................................................................8
3.2 Function .......................................................................................................9
4 Identifying the device version ................................................ 10
4.1 Nameplate ..................................................................................................10
4.2 Order details ...............................................................................................11
5 Device description .................................................................. 15
5.1 Technical data ..........................................................................................15
6 Mounting .................................................................................. 19
6.1 General .......................................................................................................19
6.2 Dimensions head transmitter .....................................................................20
6.3 The device with separate sensor ...............................................................24
6.4 Mounting examples ....................................................................................30
7 Installation ............................................................................... 33
7.1 General ......................................................................................................34
7.2 Electrical connection ..................................................................................35
8 Setup-Program ........................................................................ 39
8.1 Function .....................................................................................................39
9 Commissioning ....................................................................... 40
9.1 Head transmitter or transmitter with separate sensor ...............................40
9.2 Replacement sensor ..................................................................................40
10 Operation ................................................................................. 41

Contents
10.1 Operating elements ....................................................................................41
10.2 Operation principle .....................................................................................43
10.3 Principle .....................................................................................................45
10.4 Measurement mode ...................................................................................46
10.5 Operating level ...........................................................................................46
10.6 Administrator level .....................................................................................54
10.7 Calibration level ..........................................................................................56
10.8 The desalination function ..........................................................................57
11 Calibration ............................................................................... 61
11.1 General .......................................................................................................61
11.2 Calibration of the relative cell constant ......................................................61
11.3 Calibration of the temperature coefficient of the measurement solution ...63
12 Maintenance ............................................................................ 71
12.1 Conductivity-clean sensor .........................................................................71
13 Rectifying errors and faults ................................................... 72
13.1 Device checking .........................................................................................73
14 Annex ....................................................................................... 78
14.1 Before configuring ......................................................................................78
15 China RoHS ............................................................................. 83
16 Index ......................................................................................... 84

5
1 Typographical conventions
1.1 Warning signs
1.2 Note signs
DANGER!
This symbol is used when there may be danger to personnel if the instruc-
tions are ignored or not followed correctly!
CAUTION!
This symbol is used when there may be damage to equipment or data if
the instructions are ignored or not followed correctly!
NOTE!
This symbol is used when your special attention is drawn to a remark.
abc1Footnote
Footnotes are remarks that refer to specific points in the text. Footnotes
consist of two parts:
A marker in the text, and the footnote text.
The markers in the text are arranged as continuous superscript numbers.
✱Action instruction
This symbol indicates that an action to be performed is described.
The individual steps are marked by this asterisk.
Example:
✱Remove crosspoint screws.

6
2 General
2.1 Foreword
Please read the operating manual before you commission the device. Store
the operating manual at a place that is accessible for all users at all times.
2.2 Structure
2.2.1 Head transmitter
Example
NOTE!
All the required settings are described in this manual. Should there be any
difficulties nonetheless at the time of commissioning, we request you not to
carry out any impermissible manipulations. You could render your warranty
entitlement null and void!
Please get in touch with the nearest branch or with the head office.
(1) Transmitter (with or without graphics LC-display)
(2) Process connection
(3) Temperature sensor
(4) Inductive conductivity measuring probe
(2)
(1)
(3)
(4)
(1)
(2)
(3)
(4)

7
2 General
2.2.2 Transmitter with separate sensor
Example
(1) Transmitter (with or without graphics LC-display)
(2) Process connection
(3) Temperature sensor
(4) Inductive conductivity measuring probe
(2)
(4)
(3)
(1)
(2)
(4)
(3)

8
3 Inductive conductivity measurement
3.1 Range of Applications
General
The inductive measurement process allows a mostly maintenance-free acqui-
sition of the specific conductivity even in difficult medium conditions. In con-
trast to the conductive measurement process, problems like electrode
replacement and polarization do not occur.
Brief description
The device is used for the measurement/control of the conductivity/concentra-
tions of liquid media. Using it is particularly recommended in media in which
significant deposits from carried dirt, oil grease or of lime and gypsum are
expected. The integrated temperature measurement makes exact and fast
temperature compensation possible, which is particularly important for the
measurement of the conductivity. Additional functions such as the combined
switching of the measurement range and temperature coefficient make possi-
ble the optimum use in case of CIP-processes.
Two integrated switching outputs can be freely programmed for limit value
monitoring or conductivity/concentration and/or temperature. In addition,
alarm and control tasks (desalination) can be assigned.
Operation is either via a membrane keyboard and a plain text graphical display
(user language can be changed) or via a comfortable PC-Setup program. By
simply turning the housing cover, reading the display is possible both in case
of installation in vertical or horizontal pipes. By means of the Setup program,
the device configuration data can also be saved and printed for plant docu-
mentation purposes. To prevent manipulation, the device can also be supplied
without a keyboard/display. In this case, the Setup program is required for pro-
gramming.
The transmitter can be supplied as a combine device (transmitter and measur-
ing cell in one device) or as a shouldered version (transmitter and measuring
cell connected by cables). The separate version is particularly suitable for
plants with intense vibrations and/or intense temperature radiation at the mea-
surement location or for installation at not easily accessible places.
Typical usage fields
• CIP-cleaning (CIP = Clean In Place/Process)
• Concentration monitoring or chemical dosing
• Foodstuffs beverages and pharmaceutical industries
•Productmonitoring(phase separation, Product/Product mixture/
Water) in the beverage industry, breweries, dairies
• Control (e.g. phase separation of cleaners/rinsing water of
cleaning processes e.g. bottle cleaning plants and in case of container
cleaning)

9
3 Inductive conductivity measurement
3.2 Function
of the transmitter
The device is conceived for use at the location. A robust housing protects the
electronics and the electrical connections from aggressive ambient influences
(system of protection IP67). In the standard version, the device has one analog
signal input for the conductivity/concentration and the temperature. The fur-
ther processing of the standard signals can take place in suitable display/con-
trol devices or, e.g. directly in a PLC.
The output signals are galvanically separated from one another and from the
measurement medium.
of the measuring cell
The measurement of the conductivity takes place with an inductive probe. A
sinusoidal AC is supplied to the transmitting coil. Depending on the conductiv-
ity of the liquid to be measured, a current is induced in the receiver coil. The
current is proportional to the conductivity of the medium. The cell constant of
the inductive probe is geometry-dependent. In addition, the cell constant can
be influenced by parts in its immediate vicinity.
(1) Plastic body
(2) Coils
(3) Temperature sensor
(4) Fluid loop
(1)
(1)
(2) (2)
(3)
(3)
(4)
(4)

10
4 Identifying the device version
4.1 Nameplate
On the transmitter
The nameplate is affixed to the case.
On the separate sensor
The nameplate (flag tag) is affixed to the connecting cable.
Contents
The nameplate contains important information. This includes:
Device type (Typ)
Compare the specifications on the nameplate with the order.
Identify the supplied device version using the order details (order code).
Fabrication number (F-Nr)
Among other things, the fabrication number contains the date of production
(year/week).
Example: F-Nr = 0220565701018110001
The characters in question are in positions 12 to 15 (from the left).
The device was therefore produced in the year 2018 in its 11th calendar week.
Description Description on the
nameplate Example
Device type Typ 202756/16-607-0000-82/
767,941
Fabrication number F-Nr 0220565701018110001
Voltage supply - DC 19 ... 31 V
For devices with a separate sensor, the transmitter and detached sensor are
matched to one another at the factory!
When connecting the components, please note that the serial number of the
external sensor (marked on the flag tag attached to the connecting cable) must
match the serial number marked on the nameplate of the transmitter!

11
4 Identifying the device version
4.2 Order details
4.2.1 The device as "Head transmitter"
(1) Basic type
202756/10 JUMO CTI-750 head transmitter in plastic housing, without display/keypada
202756/15 JUMO CTI-750 head transmitter in plastic housing, with display/keypad
202756/16 JUMO CTI-750 head transmitter in stainless steel housing, with display/keypad
(2) Process connection
108 Screw connection G 1 ½ A
110 Screw connection G 2 A
607 Taper socket with union nut DN 50 DIN 11851 (dairy pipe fitting)
608 Taper socket with union nut DN 65 DIN 11851 (dairy pipe fitting)
609 Taper socket with union nut DN 80 DIN 11851 (dairy pipe fitting)
617 Clamping socket (Clamp) 2 ½"b, similar to DIN 32676
686 VARIVENT®connection DN 50/40 b, c, d
690 SMS DN 2"
(3) Insertion length
0000 See “Dimensions for head transmitter"
(4) Electrical connection
82 Cable glands
83 M12 plug/socket connectors (instead of the cable glands)e
84 Two M16 cable glands and one blanking plugf
(5) Extra code
268 Internal temperature sensor
767 Cell material PEEKg
768 Cell material PVDFh
844 Supply voltage 24 V AC
941 Hygienic design
aThe PC setup program is required for programming the device, see accessories.
bMounting items (mounting brackets) not included in delivery.
cOnly in conjunction with extra code 767 (cell material PEEK).
dHygienic process connection.
eIf required, order 1 set M12 plug/socket connectors, part no. 00529482.
fStandard on basic type extension 16.
gTemperature sensor always internal.
hNot in combination with extra code 941.
(1) (2) (3) (4) (5)
Order code / - - / , ...a
Order example 202756/10 / 607 - 0000 - 82 / 767
aList extra codes in sequence, separated by commas.

4 Identifying the device version
12
4.2.2 The device as "Transmitter with separate sensor"
(1) Basic type extension
202756/20 JUMO CTI-750 transmitter in plastic housing, without display/keypad
(without sensor) a, b
202756/25 JUMO CTI-750 transmitter in plastic housing, with display/keypad
(without sensor) b
202756/26 JUMO CTI-750 transmitter in stainless steel housing, with display/keypad
(without sensor) b
202756/60 JUMO CTI-750 transmitter in plastic housing, without display/keypad
(with sensor) cable length 10 m a
202756/65 JUMO CTI-750 transmitter in plastic housing, with display/keypad
(with sensor) cable length 10 m
202756/66 JUMO CTI-750 transmitter in stainless steel housing, with display/keypad
(with sensor) cable length 10 m
202756/80 JUMO CTI-750 replacement sensor with 10 m cable for transmitter in plastic
housing (without transmitter)b, c
202756/85 JUMO CTI-750 replacement sensor with 10 m cable for transmitter in stainless
steel housing (without transmitter)b, c
(2) Process connection
000 Without process connection
108 Screw connection G 1 ½ A
110 Screw connection G 2 A
607 Taper socket with union nut DN 50 DIN 11851 (dairy pipe fitting)
608 Taper socket with union nut DN 65 DIN 11851 (dairy pipe fitting)
609 Taper socket with union nut DN 80 DIN 11851 (dairy pipe fitting)
617 Clamping socket (Clamp) 2 ½"c, similar to DIN 32676
686 VARIVENT®connection DN 50/40 c, d, e
690 SMS DN 2"
706 Immersion modeld
(3) Insertion length (see "Dimensions for separate sensor")d
0000 Not available
0500 500 mm
1000 1000 mm
1500 1500 mm
2000 2000 mm
xxxx Special length (in 250 mm increments, e.g. 0250, 0750, 1250, 1750)
(4) Electrical connection
21 Fixed cable with M12 socket connector on separate sensor
82 Cable glands on the operating unit
83 M12 plug/socket connectors on operating unit
84 Two M16 cable glands and a blind grommetf
(5) Extra code
000 No extra code
268 Internal temperature sensor

13
4 Identifying the device version
767 Cell material PEEKg
768 Cell material PVDFh
844 Supply voltage 24 V AC
941 Hygienic design
aThe PC setup program is required for programming the device, see accessories.
bA calibration kit is absolutely essential for commissioning. If not available, please include in your order (see
accessories).
cMounting items (mounting brackets) not included in delivery.
dOnly in conjunction with extra code 767 (cell material PEEK).
eHygienic process connection.
fStandard on basic type extension 66.
gTemperature sensor always internal.
hNot in combination with extra code 941.
(1) (2) (3) (4) (5)
Order code /--/,...
a
Order example 202756/65 / 607 - 0000 - 82 / 000
aList extra codes in sequence, separated by commas.

4 Identifying the device version
14
Accessories
Software
Type Part No.
Flange DN 32, material: PP 00083375
Flange DN 50, material: PP 00083376
Weld-on threaded adapter DN 50, DIN 11851 00085020
Ring nut DN 50, DIN 11851 00343368
Ring nut SMS DN 2“, Mutter 00345162
M12 plug connector, 8-pole, straight, for assembly by user 00444307
M12 socket connector, 8-pole, straight, for assembly by user 00486503
M12 socket connector, 8-pole, straight, for assembly by user 00444312
M12 socket connector, 5-pole, straight, for assembly by user 00444313
Connector set (TN 00444307 and TN 00444313) for 202755/202756 (PG209791) 00529482
Cover with LC-display and keyboard 00443725
Cover with LC-display and keyboard for VA-version 00525488
DIN rail mounting set 00459903
Pipe installation kit 00515128
Switching mode power supply, type PS5R-A24 for DIN rail mounting;
Input voltage 100 ... 240 V AC
00374661
Adjustment set (for calibrating a replacement transmitter) 00459436
PC interface (USB/TTL), 2 adapter setup cable 00456352
Type Part No.
Setup 00454710

15
5 Device description
5.1 Technical data
5.1.1 Conductivity transmitter
A/D converter
Resolution 15 bits
Sampling time 500 ms = 2 measurements/s
Power supply For SELV and PELV circuit operation only.
Standard 19 - 31 V DC (24 V DC nominal)
Residual ripple <5 %
Reverse polarity protection yes
Extra code 844 24 V DC ±10 %, 50 - 60 Hz
Power draw
with display ≤3W
without display ≤2,6 W
Contact rating of the
PhotoMOS®relay
Voltage ≤DC 45 V; ≤AC 30 V
Current ≤200 mA
Electrical connection
82 Cable glands/pluggable screw terminals, 2,5 mm2
83 M12 plug/socket (instead of cable glands)
84 Two M16 cable glands and a pluggable screw terminal blanking
plug, 2,5 mm2
Display
Basic type extension 10 without dsplay
Basic type extension 15 Backlit graphic LCD; adjustable contrast;
dimensions: 62 mm × 23 mm
Basic type extension 16 Backlit graphic LCD; adjustable contrast;
dimensions: 62 mm × 23 mm
Permissible ambient
temperature 5 to +50 °C; max. rel. humidity. 93 %, no condensation
Permissible storage
temperature -20 to +75 °C; max. rel. humidity. 93 %, no condensation
Protection ratingaIP67
Electromagnetic
compatibilityb
Interference emission Class B
Interference immunity to industrial requirements
Housing
Basic type extensions
10, 15, 20, 25, 60, 65
PA
Basic type extensions
16, 26, 66
Stainless steel 1.4305 (AISI 303)
Weightcapprox.0,3-2,4kg
aDIN EN 60529
bDIN EN 61326
cDependent on version and process connection

5 Device description
16
5.1.2 Measuring ranges
There is a choice of four different measuring ranges. Any one of these ranges
can be activated by an external switch or by a PLC.
NOTE!
The overall accuracy is composed of transmitter accuracy + sensor
accuracy.
Transmitter measuring
ranges Accuracy (as % of measuring range span)
0 - 500 µS/cm ≤0,5 %
0 - 1000 µS/cm
0 - 2000 µS/cm
0 - 5000 µS/cm
0 - 10 mS/cm
0 - 20 mS/cm
0 - 50 mS/cm
0 - 100 mS/cm
0 - 200 mS/cm
0 - 500 mS/cm
0 - 1000 mS/cm
0 - 2000 mS/cma
Concentration measurement implemented in the device software
NaOH (caustic soda) 0 - 15 % by weight or 25 - 50 % by weight (0 - 90 °C)
HNO3(nitric acid) 0 - 25 % by weight or 36 - 82 % by weight (0 - 80 °C)
Customer-specific
concentration curve
freely programmable via the setup program
(see "Special functions")
Calibration timer 0 - 999 days (0 = OFF)
Output signal conductivity
and concentrationb0 - 10 V or 10 - 0 V
2 - 10 V or 10 - 2 V
0 - 20 mA or 20 - 0 mA
4 - 20 mA or 20 - 4 mA
Burden
at current output ≤500 Ω
at voltage output ≥2k Ω
Ambient temperature effect ≤0,1 %/K
Analog output at "Alarm"
Low 0 mA/0 V/3.4 mA/1.4 V or a fixed value
High 22.0 mA/0.7 V or a fixed value
aNot temperature compensated.
bThe output signal is freely scalable.

17
5 Device description
5.1.3 Temperature transmitters
5.1.4 Temperature compensation
Temperature acquisitionaManually, -20.0 to 25.0 to 150 °C or °F, or automatically
Measuring range -20 - 150 °C or °F
Characteristic linear
Accuracy ≤0.5 % of the measuring range
Ambient temperature effect ≤0.1 %/K
Output signal 0-10Vor10-0V
2-10Vor10-2V
0 - 20 mA or 20 - 0 mA
4 - 20 mA or 20 - 4 mA
The output signal is freely scalable in the -20 to +200°C range.
Burden
at current output ≤500 Ω
at voltage output ≥2k Ω
Analog output at "Alarm"
Low 0 mA/0 V/3.4 mA/1.4 V or a fixed value
High 22.0 mA/10.7 V or a fixed value
aTake the permissible sample medium temperature into consideration!
Reference temperature 15 to 30 °C, adjustable
Temperature coefficient 5.5 %/°C, adjustable
Compensation range -20 to 150 °C
Function linear or
natural water (EN 27888) or
non-linear (learning function, see Special functions

5 Device description
18
5.1.5 Inductive conductivity sensor
Measuring range Accuracy (as % of measuring range span)
0-500µS/cm ≤1%
0 - 1000 µS/cm ≤1%
0 - 2000 µS/cm ≤0,5 %
0 - 5000 µS/cm ≤0,5 %
0-10mS/cm ≤0,5 %
0-20mS/cm ≤0,5 %
0-50mS/cm ≤0,5 %
0-100mS/cm ≤0,5 %
0-200mS/cm ≤0,5 %
0-500mS/cm ≤0,5 %
0 - 1000 mS/cm ≤1%
0 - 2000 mS/cma≤1%
Material
for extra code 767 PEEK
for extra code 768 PVDF
Permissible sample
medium temperatures -10 - +120 °C, briefly +140 °C (sterilization)
Pressure max. 10 bar
aNot temperature compensated
NOTE!
The temperature, pressure and sample medium affect the service the ser-
vice life of the measuring cell!

19
6 Mounting
6.1 General
6.1.1 Installation location
The compatibility of the material with the measurement medium must be
checked by the customer.
Ensure easy accessibility for subsequent calibration.
The fastening must be secure and low-vibration.
Avoid direct sunlight.
It is necessary to pay attention to a good flow through and around the sensor (3).
When installing in a pipe, a minimum distance of 20 mm must be maintained
from the sensor to the pipe wall.
If these minimum distances cannot be maintained, the parameter "Mounting
factor" can be used to achieve limited equalization.
In immersion operation in a basin, an installation location that is representative
for the typical conductivity or concentration must be provided.
6.1.2 Mounting location
The Type 202756 can be mounted in any position.
6.1.3 Screwing in and unscrewing the separate sensor
(1)
(2)
(3)
CAUTION!
When using head transmitters the Pg screw connections (1) must point in
the direction of the flow!
For separate conductivity sensors the direction of the flow is labelled by a
dot on the upper part of the sensor.
This dot must point towards the direction of the flow!
CAUTION!
No cable twisting should occur.
Avoid tensile forces on the cable, especially jerky pulling.

6 Mounting
20
6.2 Dimensions head transmitter
6.2.1 Process connections
Version with process connection
108 = screw-in thread G 1 1/2 A
110 = screw-in thread G 2 A
and extra code 767
Version with process connection
107 = screw-in thread G 1 1/4 A
108 = screw-in thread G 1 1/2 A
110 = screw-in thread G 2 A
and extra code 768
36
1
1
2
36
1
3
1 = stainless steel 1.4301 2 = PEEK 3 = PVDF