JUMO CTI-750 User manual

JUMO CTI-750
Inductive Conductivity/Concentration and
Temperature Transmitter with switch contacts
B 202756.0
Operating Instructions
2013-07-25/00452846

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 Preface .........................................................................................................6
2.2 Device configuration ....................................................................................6
3 Inductive conductivity measurement ...................................... 8
3.1 Area of application .......................................................................................8
3.2 Function .......................................................................................................9
4 Instrument identification ........................................................ 10
4.1 Nameplate ..................................................................................................10
4.2 Type designation ........................................................................................11
4.3 The device as "Head transmitter" ..............................................................11
4.4 The device as "Transmitter with separate sensor" ....................................12
5 Instrument description ........................................................... 15
5.1 Technical data ..........................................................................................15
6 Installation ............................................................................... 19
6.1 General .......................................................................................................19
6.2 Head transmitter dimensions .....................................................................20
6.3 Device with separate sensor ......................................................................24
6.4 Mounting examples ....................................................................................31
7 Installation ............................................................................... 35
7.1 General ......................................................................................................36
7.2 Electrical connection ..................................................................................37
8 Setup program ........................................................................ 42
8.1 Function .....................................................................................................42
9 Commissioning ....................................................................... 43
9.1 Head-mounted transmitter or transmitter with separate sensor ................43
9.2 Replacement sensor ..................................................................................43

Contents
10 Operation ................................................................................. 44
10.1 Controls ......................................................................................................44
10.2 Principle of operation .................................................................................46
10.3 Principle of operation .................................................................................48
10.4 Measurement mode ...................................................................................49
10.5 Operator level .............................................................................................49
10.6 Administrator level .....................................................................................57
10.7 Calibration level ..........................................................................................59
10.8 Dilution function .........................................................................................60
11 Calibration ............................................................................... 64
11.1 General .......................................................................................................64
11.2 Calibrating the relative cell constant ..........................................................64
11.3 Calibrating the temp. coefficient of the sample solution ...........................66
12 Maintenance ............................................................................ 74
12.1 Cleaning the conductivity sensor ...............................................................74
13 Eliminating faults and malfunctions ...................................... 75
13.1 Checking the instrument ............................................................................76
14 Appendix .................................................................................. 81
14.1 Before configuration ...................................................................................81

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 Preface
Please read these operating instructions before commissioning the inst-
rument. Keep the manual in a place that is accessible to all users at all times.
2.2 Device configuration
2.2.1 Device as head transmitter
Example
NOTE!
All necessary settings are described in this manual. However, if any difficul-
ties should still arise during start-up, please do not carry out any unauthori-
zed manipulations. You could endanger your rights under the instrument
warranty!
Please contact the nearest subsidiary or the head office in such a case.
(1) Transmitter (with and without graphic LCD display)
(2) Process connection
(3) Temperature probe
(4) Inductive conductivity measurement sensor
(2)
(1)
(3)
(4)
(1)
(2)
(3)
(4)

7
2 General
2.2.2 Device with separate sensor
Example
(1) Transmitter (with and without graphic LCD display)
(2) Process connection
(3) Temperature probe
(4) Inductive conductivity measurement sensor
(2)
(4)
(3)
(1)
(2)
(4)
(3)

8
3 Inductive conductivity measurement
3.1 Area of application
General
The inductive measurement method permits largely maintenance-free
acquisition of the specific conductivity, even in difficult media conditions.
Unlike the conductive measurement method, problems such as electrode
decomposition and polarization do not occur.
Brief description
The instrument is used for the measurement/control of conductivity or
concentration in liquid media. It is particularly recommended for use in media
where severe deposits of dirt, oil, grease or gypsum/lime precipitates are to be
expected. The integrated temperature measurement enables fast and
accurate temperature compensation, which is of particular importance when
measuring conductivity. Additional functions, such as the combined
changeover of measurement range and temperature coefficient, enable
optimum application in CIP processes.
Two built-in switching outputs can be freely programmed to monitor limits for
conductivity/concentration and/or temperature. It is also possible to assign
alarm and control functions (dilution).
The instrument is operated either from the membrane keypad and plain-text
graphics display (operator language can be changed over) or through the user-
friendly PC setup program. Simply rotating the housing cover makes it
possible to read the display, regardless of whether the installation is in
horizontally or vertically arranged pipes. By using the setup program, the
instrument configuration data for plant documentation can be saved and
printed out. To prevent any tampering, the instrument can also be supplied
without keypad or display. In this case, the setup program is needed for
programming.
The instrument is available either as a combined unit (transmitter and
measuring cell together in one unit) or as a split version (transmitter and cell
connected by cable). The split version is particularly suitable for plant
subjected to strong vibration and/or significant heat radiation at the point of
measurement, or for installation on sites that are difficult to access.
Typical areas of application
• CIP cleaning (CIP = Clean In Place/Process)
• concentration monitoring or dosing of chemicals
• food/beverage and pharmaceutical industries
• product monitoring (phase separation of product/product mix/water)
in the beverage industry, breweries, dairies
• control (e.g. phase separation of detergent/rinsing water in
cleaning processes, e.g. bottle cleaning plant, or for container cleaning)

9
3 Inductive conductivity measurement
3.2 Function
of the transmitter
The instrument has been designed for use on site. A rugged housing protects
the electronics and the electrical connections from corrosive environmental
conditions (enclosure IP67). As standard, the device has one analog signal
output each for conductivity/concentration and temperature respectively.
Further processing of the standard signals can take place in a suitable display/
control device, or, for example, directly in a PLC.
The output signals are electrically isolated from one another and from the
medium.
of the measuring cell
The conductivity is measured using an inductive probe. A sinusoidal a.c.
voltage feeds the transmitting coil. Depending on the conductivity of the liquid
to be measured, a current is induced in the receiver coil. This current is pro-
portional to the conductivity of the medium. The cell constant of the inductive
probe depends on its geometry. The cell constant can also be affected by
components in the immediate vicinity.
(1) Plastic body
(2) Coils
(3) Temperature sensor
(4) Liquid loop
(1)
(1)
(2) (2)
(3)
(3)
(4)
(4)

10
4 Instrument identification
4.1 Nameplate
on the transmitter
on the connecting cable (only with separate sensor)
JUMO GmbH & Co. KG
Fulda, Germany
www.jumo.net
JUMO CTI-750
Type: 202756/15-607-0000-82/767,941
VARTN: 20/00544540
F No.: 12345678 01 0 1203 0001
DC 19...31 V 3W
ⱕ
CAUTION!
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 label attached to the connecting cable) must
match the serial number marked on the nameplate of the transmitter!
NOTE!
The date of manufacture is coded in the “F No.” (serial number):
1203 means manufactured in year 2012/calendar week 03

11
4 Instrument identification
4.2 Type designation
4.3 The device as "Head transmitter"
(1) Basic type
202756 Inductive transmitter/switching device for conductivity/
concentration and temperature
(2) Basic type extension
10 Head transmitter in plastic housing, without display/keypada
15 Head transmitter in plastic housing, with display/keypad
16 Head transmitter in stainless steel housing, with display/keypad
(3) Process connection
107 Thread G 1 1/4 A
108 Thread G 1 1/2 A
110 Thread G 2 A
606 DN 40 screwed pipe fitting, DIN 11 851 (MK DN 40, milk cone)
607 DN 50 screwed pipe fitting, DIN 11851 (MK DN 50, milk cone)
608 DN 65 screwed pipe fitting, DIN 11851 (MK DN 65, milk cone)
609 DN 80 screwed pipe fitting, DIN 11851 (MK DN 80, milk cone)
617 Clamp 2 1/2"b
686 VARIVENT®DN 40/50 b, c, d
690 SMS 2"
955 Pressing screw G 1 A, EL= 57 mmc, e
956 Pressing screw G 1 A, EL= 87 mmc, e
(4) Immersion length
0000 See “Dimensions for head transmitter"
(5) Electrical connection
82 Cable glands
83 M12 plug/socket connectors (instead of the cable glands)f
84 Two M16 cable glands and one blanking plugg
(6) Extra code
268 Internal temperature sensor
767 Cell material PEEKh
768 Cell material PVDFi
844 Supply voltage 24 V AC
941 Hygienic design
aThe PC setup program is required for programming the instrument, see accessories.
bMounting items (mounting brackets) not included in delivery.
cOnly in conjunction with extra code 767 (cell material PEEK)
dEHEDG-certified
eOnly in conjunction with extra code 268 (internal temperature sensor) and 767 (cell material PEEK).
Installation only in conjunction with process connection adapter, part no. 00530354 or 00530355!
fIf required, order 1 set M12 plug/socket connectors, part no. 00529482.
gStandard on basic type extension 16
hTemperature sensor always internal
iNot in combination with extra code 941

4 Instrument identification
12
4.4 The device as "Transmitter with separate sensor"
(1) (2) (3) (4) (5) (6)
Order code / - - - / , ...a
Order example 202756 / 10 - 607 - 0000 - 82 / 767
aList extra codes in sequence, separated by commas.
(1) Basic type
202756 Inductive transmitter/switching device for conductivity/
concentration and temperature
(2) Basic type extension
20 Transmitter in plastic housing, without display/keypad (without sensor)a, b
25 Transmitter with display/keypad (without sensor)b
26 Transmitter in stainless steel housing, with display/keypad (without sensor)b
60 Transmitter without display/keypad including sensor (cable length 10 m)a
65 Transmitter with display/keypad including sensor (cable length 10 m)
66 Transmitter in stainless steel housing, with display/keypad including sensor
(cable length 10 m)
80 Replacement sensor with a 10 m long cable for transmitter in plastic housing
(without transmitter)b, c
85 Replacement sensor with a 10 m long cable for transmitter in stainless steel
housing (without transmitter)b, c
(3) Process connection
000 Without process connection
107 Thread G 1 1/4 A
108 Thread G 1 1/2 A
110 Thread G 2 A
606 DN 40 screwed pipe fitting, DIN 11851(MK DN 40, milk cone)
607 DN 50 screwed pipe fitting, DIN 11851(MK DN 50, milk cone)
608 DN 65 screwed pipe fitting, DIN 11851(MK DN 65, milk cone)
609 DN 80 screwed pipe fitting, DIN 11851(MK DN 80, milk cone)
617 Clamp 2 1/2"c
686 VARIVENT®DN 40/50c, d, e
690 SMS 2"
706 Immersion modelf
955 Pressing screw G 1", EL = 57 mmd, g
956 Pressing screw G 1", EL = 87 mmd, g
(4) Immersion length (see "Dimensions for separate sensor")f
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)

13
4 Instrument identification
(5) 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 grommeth
(6) Extra code
000 No extra code
268 Internal temperature sensor
767 Cell material PEEKi
768 Cell material PVDFj
844 Supply voltage 24 V AC
941 Hygienic design
aThe PC setup program is required for programming the instrument, 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)
eEHEDG-certified
fOnly in conjunction with extra code 768 (cell material PVDF)
gOnly in conjunction with extra code 268 (internal temperature sensor) and 767 (cell material PEEK).
Installation only in conjunction with process connection adapter, part no. 00530354 or 00530355!
hStandard on basic type extension 66
iTemperature sensor always internal
jNot in combination with extra code 941
(1) (2) (3) (4) (5) (6)
Order code / - - - / , ...a
Order example 202756 / 65 - 607 - 0000 - 82 / 000
aList extra codes in sequence, separated by commas.

4 Instrument identification
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
Adapter Clamp 1“ - 1,5“ to G 1 00530354
Adapter MK DN 50 to G 1 00530355
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 Instrument 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 photo MOS relay
Voltage ≤50 V AC/DC
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
-10 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

5 Instrument 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.
cDependent on version and process connection
NOTE!
The overall accuracy is composed of transmitter accuracy plus 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 Instrument description
5.1.3 Temperature transmitters
5.1.4 Temperature compensation
Temperature acquisitiona
aTake the permissible sample medium temperature into consideration!
Manually, -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
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 Instrument 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
aNot temperature compensated
≤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
NOTE!
The temperature, pressure and process medium influence the operating life
of the measuring cell.

19
6 Installation
6.1 General
6.1.1 Installation location
Make sure that the site is readily accessible, for calibration at a later time.
The fixing must be secure and free from vibration.
Avoid direct sunlight!
Take care that there is adequate flow through and around the sensor (2)!
If the device is to be mounted in a pipeline, there must be at least 20 mm
clearance between the sensor and the wall of the pipe.
If it is not possible to achieve this minimum clearance, then a limited
compensation can be made through the "Mounting factor" parameter.
For submerged operation in basins, a location must be chosen that is
representative of the typical conductivity or concentration.
6.1.2 Mounting location
The device can be mounted in any position.
The display can be adjusted by means of a captive screw according to the
mounting direction.
6.1.3 Screwing the separate sensor in and out
(1)
(2)
(3)
ACHTUNG!
With head transmitters, the PG cable glands (1) must point in the flow
direction!
With separate conductivity sensors, the flow direction is indicated by a dot
on the upper part of the sensor.
This dot must point in the flow direction!
With "overhead installation" the black breather (2) points upwards. In this
case, no liquid (such as condensate) must be allowed to block the breather
(2)!
CATUION!
The cable must not be twisted!
Avoid forcefully tugging the cable, especially suddenly.

6 Installation
20
6.2 Head transmitter dimensions
6.2.1 Operating device
Head transmitter in a plastic casing
for basic type extensions 10 or 15 and electrical connection 83
6.2.2 Process connections
M12 flush-type connector
5-pin
M12 flush-type connector
8-pin
M12 flush-type connector
8-pin
M12 socket
(PBT / PA)
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 = stianless steel 1.4301 2 = PEEK 3 = PVDF