Inductive
conductivity transmitter
in stainless steel housing
JUMO CTI-750
Type 202756
B 20.2756.0.1
Operating manual
11.07/00488788
Contents
1 Typographical conventions ...................................................... 8
1.1 Warning signs ..............................................................................................8
1.2 Attention-drawing signs ...............................................................................8
2 General ....................................................................................... 9
2.1 Foreword ......................................................................................................9
2.2 Structure of the JUMO CTI-750..................................................................10
3 Inductive conductivity measurement .................................... 11
3.1 Field of application .....................................................................................11
3.2 Function .....................................................................................................12
4 Identifying the device ............................................................. 13
4.1 Type nameplate .........................................................................................13
4.2 Type declaration ........................................................................................14
4.3 JUMO CTI-750 as "Head transmitter" ........................................................14
4.4 JUMO CTI-750 as "Transmitter with separate sensor" .............................15
5 Device description .................................................................. 17
5.1 Technical data, transmitter ......................................................................17
6 Assembly .................................................................................. 21
6.1 General ...................................................................................................... 21
6.2 Dimensions / Process connections, head transmitter ...............................22
6.3 JUMO CTI-750 with separate sensor ........................................................24
6.4 Assembly examples ...................................................................................28
7 Installation ............................................................................... 30
7.1 General ......................................................................................................31
8 Setup program ........................................................................ 34
8.1 Function .....................................................................................................34
9 Commissioning ....................................................................... 35
9.1 Head transmitter or transmitter with separate sensor ...............................35
9.2 Replacement sensor ..................................................................................35
Contents
10 Operation ................................................................................. 36
10.1 Operating elements ....................................................................................36
10.2 Principle of operation .................................................................................38
10.3 Principle .....................................................................................................40
10.4 Measurement mode ...................................................................................41
10.5 Operator level .............................................................................................41
10.6 Administrator level .....................................................................................49
10.7 Calibration level ..........................................................................................51
10.8 The desalination function ...........................................................................52
11 Calibrating ............................................................................... 56
11.1 General ...................................................................................................... 56
11.2 Calibration of the relative cell constant ......................................................56
11.3 Calibration of the temperature coefficient of the measurement solution ...57
12 Maintenance ............................................................................ 65
12.1 Cleaning the conductivity sensor ...............................................................65
13 Rectifying errors and faults ................................................... 66
13.1 Device inspection .......................................................................................66
14 Annex ....................................................................................... 72
14.1 Before configuring .................................................................................. 72
5
A
A/D-converter 17
Sediments 11, 65
Desalination reduction 53
DESALINATION FUNCTION 48
Desalination function 48, 52, 74
Desalination function: Start 48
Desalination function: Stop 48
Desalination 11
Desalination valve 52
REDUCTION 48
Reduction 74
DISTANCE 47
Distance 74
Alarm window 47
Analog output in case of "Alarm" 18–19
Connection 34
Connection layout of the transmitter 33
Weld-on threaded connector28
Display 17
OUTPUT BINARY 46
Output binary 74
OUTPUT CONDUCTIVITY 44
Output conductivity 72
OUTPUT TEMPERATURE 45
Output temperature 73
Outputs 33
Output signal 18
Output signal, temperature 19
SWITCHOFF DELAY 48
Switchoff delay 74
B
Operating in levels 40
Operation principle 38
IN CASE OF ALARM 44–45
In case of alarm 73
IN CASE OF ALARM / CALIB. 47
in case of alarm / at the time of calibration 74
IN CASE OF HOLD 47
in case of Hold 74
IN CASE OF CALIBRATION 44, 46
In case of calibration 73, 74
LIGHTING 49
Lighting 75
Calculation of a temperature coefficient 60
REFERENCE TEMPERATURE 42
Reference temperature 72
Binary inputs 33
Biocide 52
Burden 18–19
C
CIP 11
CIP-Process 11
D
DOSING TIME 48
Dosing time 74
Pressure 20
E
Levels of the Administrator level 50
MOUNTING FACTOR 43
Mounting factor 21, 72
Installation position 21
Installation variants 22
INPUT BINARY 48
input binary 74
INPUT CONDUCTIVITY 42
Input conductivity 72
INPUT TEMPERATURE 45
Input temperature 73
UNIT 45
Unit 73
SWITCH-OFF DELAY48
Switch-off delay 74
Setting parameters 48
Electrical connection 17, 30
Electromagnetic compatibility 30
Removing the pigmenting 32
Determining the TC-curve 60
explosion-endangered areas 30
F
Error possibilities 66
FILTERING TIME 43, 45
Filtering time 72, 73
FUNCTION 46, 48
Function 20, 74
G
galvanic separation 34
Housing 17
Accuracy 19–20
DEVICE DATA 49
Device data 75
Weight 17
LIMITING VALUE 47
Limiting value 74
H
MANUAL OPERATION 44, 46–47
6
Manual operation 73–74
MANUAL VALUE 44, 46
Manual value 73–74
Date of manufacture 13
Attention-drawing signs 8
Hold function 48
HYSTERESIS 47
K
CALIBR.-INTERVAL 43
Calibration interval 72
Calibration timer 18
Characteristic 19
Compensation range 19
Configurable parameters 34
Configuring 72
CONTRAST 49
Contrast 75
CONCENTR. RANGE43
CONCENTR. MEASUREMENT 43
Concentration measurement 18, 72
L
LCD INVERSE 49
LCD inverse 75
Limit comparator 46
Solvent 65
M
MANUAL SPECIFICATION 45
Manual specification 73
Material 20
MEASUREMENT RANGE 42
Measurement range 72
MEASUREMENT RANGE 1 42
Measurement range, sensor 20
Measurement range / Temperature coefficient
switching
48
Transmitter head 24
Measurement process 11
MEASUREMENT VALUE ACQUISITION 45
Measurement value acquisition 73
Installation location 21
N
natural 20
natural water 20
non-linear temperature coefficient 60
O
OFFSET 43, 45
Offset 72–73
P
Parameters, configurable 34
Password 49
Polarization 11
PULSE DURATION 48
Pulse duration 74
R
Reference fluid 70
Reference measuring instrument 71
Reference temperature 19
REL. CELL CONSTANT 42
Relative cell constant 72
S
Breaking capacity of the semiconductor relay
17
System of protection 17
Sensor part 25
Service-Hotline 9
Setup interface 34
SAFETY VALUE 44, 46
Safety value 73, 74
SIGNAL TYPE 44–45
Signal type 72–73
SCALING START 44–45
Scaling start 73
SCALING END 44–45
Scaling end 73
Sunlight radiation 21
Voltage supply 17, 33
LANGUAGE 49
Language 75
T
Keyboard lock 48
TEMP. COEFFICIENT 42
TEMP. COMPENSATION 42
Temperature of the measurement medium 20
Temperature acquisition 19
Temperature coefficient 19, 72
Temperature compensation 72
Temperature compensation with the TC-curve
61
Temperature measurement range 19
TC-curve 61
U
Influence of ambient temperature 18–19
reconfigure 72
7
V
LOCKING TIME 48
Locking time 74
Pre-calculated values 69
W
Warning signs 8
Resistant loop 67
Wiping contact 47
Z
CELL CONSTANT 42
Cell constant 72
permissible storage temperature 17
permissible ambient temperature 17
8
1 Typographical conventions
1.1 Warning signs
1.2 Indicative signs
Caution
This sign is used if, by carefully following or not following instructions, harm to
persons can occur
Caution
This sign is used if, by carefully following or not following instructions, dam-
age to devices or data can occur
Note
This sign is used when your attention is to be drawn to something special.
abc
1
Footnote
Footnotes are remarks that refer. to specific places in the text. Footnotes
consist of two parts:
Flag in the text and footnote text.
The flagging in the text is done by superscript serial numbers.
✱ Action indication
This sign indicates that an activity to be carried out is being described.
The individual work steps are marked by this star.
Example:
✱ Loosen the crosshead screws..
9
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.
Please help us to improve this operating manual.
We would be grateful for your suggestions.
Telephone(06 61) 60 03-7 14
Telefax (06 61) 60 03-6 05
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.
In case of technical queries
Service-Hotline:
Telephone:(06 61) 60 03-3 00 or (06 61) 60 03-6 53
Telefax: (06 61) 60 03-88 13 00 or (06 61) 60 03-88 16 53
E-mail: Service@jumo.net
2 General
10
2.2 Structure of the JUMO CTI-750
Examples
(1) Transmitter (4) Inductive conductivity measuring
probe
(2) Process connection (5) with or without graphics LC-display
(3) Temperature sensor
Model:
Transmitter and
conductivity measuring
probe combined,
type 202756/xx...
Model:
Transmitter w ith
separate sensor,
type 202756/xx...
(2)
(1)
(3)
(1)
(2)
(4)
(5)
(4)
(3)
11
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 contrast 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 / concentrations 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 possible 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 documentation purposes. To prevent manipulation, the device can also be supplied
without a keyboard / display. In this case, the Setup program is required for
programming.
The JUMO CTI-750 can be supplied as a combine device (transmitter and
measuring 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
measurement 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
-Product monitoring (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)
3 Inductive conductivity measurement
12
3.2 Function
of the transmitter
The JUMO CTI-750 transmitter is conceived for use at the location. A robust
housing protects the electronics and the electrical connections from aggressive ambient influences (system of protection IP 67). In the standard version,
the device has one analog signal input for the conductivity / concentration and
the temperature. The further processing of the standard signals can take place
in suitable display / control 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 conductivity 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 (4) Measurement medium
(2) T-shaped flow channel (5) Temperature sensor Pt100
(3) Fluid loop
(2)
(1)
(3)
(4)
(5)
13
4 Identifying the device
4.1 Type nameplate
on the
transmitter
on the connecting
cable
(only in case of
separate sensor)
JUMO GmbH & Co. KG
Fulda, Germany
www.jumo.net
JUMO CTI-750
Typ: 202756/16-607-0000-82/000
VARTN: 20/00445843
F-Nr.: 00909467 01 0 0745 0001
DC 19...31 V 3W
ⱕ
F-Nr.: 00909467 01 0 0517 0001
In the case of devices with a separate sensor (base type supplementation (2)
66), for every instrument, the transmitter and the separate sensor are matched
to one another at the factory.
When connecting the components, ensure that the production number of the
external sensor (on the flag tag on the connecting cable) is identical to the production number of the transmitter (on the nameplate).
The date of manufacture is encrypted in the "F-No." :
0517 means year of manufacture 2005 / calendar week 17
4 Identifying the device
14
4.2 Type explanation
4.3 JUMO CTI-750 as "Head-mounted transmitter"
1
Only in conjunction with additional code 767 (measuring cell material
PEEK).
2
If required, M12-plug / -sockets, additional code 580 should be ordered.
3
Specify additional codes in succession separated by a comma.
4
Assembly material (mounting brackets) not part of the scope of supply.
(1) Basic type
202756 JUMO CTI-750
Inductive transmitter / switching device
for conductivity / concentration and temperature
(2) Basic type supplementation
16 Head-mounted transmitter in stainless steel housing
with display / keyboard
(3) Process connection
o 107 Stud thread G1 1/4A
o 108 Stud thread G1 1/2A
o 110 Stud thread G2A
o 606 Screwed pipe connection DN40, DIN 11 851
(MK DN50, milk cone)
o 607 Screwed pipe connection DN50, DIN 11 851
(MK DN40, milk cone)
o 608 Screwed pipe connection DN65, DIN 11 851
(MK DN65, milk cone)
o 609 Screwed pipe connection DN80, DIN 11 851
(MK DN80, milk cone)
o 617 Clamp 2 1/2"
4
o 686 VARIVENT® DN40/50
1
o 690 SMS 2"
(4) Immersion length
o 000 see "Dimensions / Process connections (head-
mounted transmitter"
(5) Electrical connection
o82Cable glands
o 83 M12-plug / -sockets
(instead of the cable glands)
2
o 84 Two cable glands M16 and a dummy plug
(6) Extra codes
3
000 None
o 268 Temperature sensor inside
X 767 Measuring cell material PEEK
X 768 Measuring cell material PVDF
o 844 Voltage supply AC 24 V
(1) (2) (3) (4) (5) (6)
Ordering key / - - - / , ...
Ordering example 202756 / 16 - 607 - 000 - 82 / 000
15
4 Identifying the device
4.4 JUMO CTI-750 as "Transmitter with separate sensor"
(1) Basic type
202756 JUMO CTI-750
Inductive transmitter / switching device
for conductivity / concentration and temperature
(2) Basic type supplementation
26 Transmitter in stainless steel housing, with display / keyboard
(without sensor)
5
66 Transmitter in stainless steel housing, with display / keyboard includ-
ing sensor (cable length 10 m)
85 Replacement sensor with 10 m cable
1, 5
for transmitter in stainless steel housing
(3) Process connection
X 000 not available
o o o 107 Stud thread G1 1/4A
o o o 108 Stud thread G1 1/2A
o o o 110 Stud thread G2A
o o o 606 Screwed pipe connection DN40, DIN 11 851 (MK DN40, milk cone)
o o o 607 Screwed pipe connection DN50, DIN 11 851 (MK DN50, milk cone)
o o o 607 Screwed pipe connection DN65, DIN 11 851 (MK DN65, milk cone)
o o o 607 Screwed pipe connection DN80, DIN 11 851 (MK DN80, milk cone)
o o o 617 Clamp 2 1/2"
1
ooo 686 VARIVENT® DN40/50
2
o o o 690 SMS 2"
5
o o 706 Submerged version
6
(4) Immersion length
X 0000 see "Dimensions / Process connections (separate sensor)"
X o o 0500 0500 mm
X o o 0000 1000 mm
X o o 0000 1500 mm
X o o 0000 2000 mm
X o o xxxx Special length (in grid of 250 mm; e.g. 0250; 0750; 1250; 1750)
(5) Electrical connection
X 21 Fixed cable with M12-socket at separate sensor
o o 82 Cable glands on operating part
o o 83 M12-plug / sockets on operating part
3
o o 84 Two cable glands M16 and a dummy plug
(6) Extra codes
4
X X X 000 no extra code
o o 268 Temperature sensor inside
o o 580 1 set M12-plug / sockets
X X X 767 Measuring cell material PEEK
X X X 768 Measuring cell material PVDF
o o 844 Voltage supply AC 24 V
4 Identifying the device
16
1
Assembly material (Union / grooved nut, mounting bracket) not part of
scope of supply. If required, please order as well, see accessories.
2
Only in conjunction with additional code 767 (measuring cell material
PEEK).
3
If required, M12-plug / -sockets, additional code 580 should be ordered.
4
Specify additional codes in succession separated by a comma.
5
An equalizing set is indispensable for commissioning. If not available,
please order as well, see Accessories.
6
Only in conjunction with additional code 768 (measuring cell material
PVDF).
(1) (2) (3) (4) (5) (6)
Ordering key / - - - / , ...
Ordering example 202756 / 66 - 607 - 1000 - 82 / 767
17
5 Device description
5.1 Technical data, transmitter
5.1.1 General
A/D-converter Resolution: 15-bit
sampling time:500 ms = 2 measurements/s
Voltage supply For operation on SELF- or PELV-circuits
Standard production feature:
DC 19…31 V (nominal DC 24 V), the device has reverse polarity protection
Ripple: < 5%
Power drawn with display: ≤ 3 W
Power drawn without display: ≤ 2.6 W
In case of extra code 844:
AC 24 V ±10%
Breaking capacity of the semiconductor relay
U< 50 V AC/DC
I ≤ 200 mA
electrical connection
Threaded plug terminals 2.5 mm
2
or M12-plug/ sockets
Display (option) Graphic-LCD with background lighting; Contrast adjustable
dimensions: 62 x 23 mm
permissible
ambient temperature
(transmitter)
-5…+50°C
max. 93% rel. atmospheric humidity, without thawing
permissible
storage temperature
(transmitter)
-10…+65°C
max. 93% rel. atmospheric humidity, without thawing
System of protection
(transmitter)
IP 67
Housing Stainless steel, material no. 1.4305
Weight depending on the model and process connection
about 2.4 kg
5 Device description
18
5.1.2 Conductivity-/ Concentration transmitter
Concentration
measurement
(implemented in
the device software)
- NaOH (sodium hydroxide solution)
0...15 % by weight or 25...50 % by weight
- HNO
3
(nitric acid); pay attention to the chemical resistance of the sensor!
0...25 % by weight or 36...82 .% by weight
- Customer-specific concentration curve
freely programable via the setup program (see "Special functions")
Calibration
timer
adjustable: 0...999 days (0 = off)
Output signal
conductivity /
concentration
0...10 V / 10...0 V
2...10 V / 10...2 V
0...20 mA / 20...0 mA
4...20 mA / 20...4 mA
The output signal is freely scalable.
Load ≤ 500 Ω for current output
≥ 2kΩ for voltage output
Influence of
ambient temperature
≤ 0.1%/K
Analog output
in case of
"Alarm"
Low (0 mA / 0 V / 3.4 mA / 1,4 V) or
High (22.0 mA / 10,7 V) or
a fixed value that can be set (safety value)
Measurement
ranges
Four measurement ranges can be selected.
One of these measurement ranges can be activated via an external switch or a
PLC .
Measurement ranges, transmitter
Accuracy
(in % of the start -
of measurement range)
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/cm
1
19
5 Device description
1
not temperature-compensated
Note:
The overall accuracy is formed from the accuracy of the transmitter + the
accuracy of the sensor.
5.1.3 Temperature transmitter
Temperature
acquisition
manual -20.0...25.0...150°C / °F
or
automatic
Temperature
measurement
range
-20...150°C / °F
Characteristic linear
Accuracy ≤ 0.5% of the measurement range
Influence of
ambient temperature
≤ 0.1%/K
Output -signal
temperature
0...10 V / 10...0 V
2...10 V / 10...2 V
0...20 mA / 20...0 mA
4...20 mA / 20...4 mA
The output signal is freely scalable.
Load ≤ 500 Ω for current output
≥ 2 kΩ for voltage output
Analog output
in case of
"Alarm"
Low (0 mA / 0 V / 3.4 mA / 1,4 V) or
High (22.0 mA / 10,7 V) or
a fixed value that can be set (safety value)
5.1.4 Temperature compensation
Reference temperature
15...30°C adjustable
Temperature
coefficient
0.0...5.5 %/K adjustable
5 Device description
20
Compensation
range
-20...150°C
Function - Linear compensation (constant temperature coefficient).
This type of compensation can be applied with acceptable for many normal
types of water. The temperature coefficient used is then about 2.2 %/K.
- Natural water (DIN EN27888 or ISO 7888).
In this case, a so-called non-linear temperature compensation is applied.
According to the above standard, the corresponding type of compensation
can be applied in the case of natural ground waters, spring waters and
above-ground waters.
The conductivity of the water is compensated in the range from 0°C to
36°C.
- Not linear (for learning function, see special functions)
Here, the actual flow of the temperature coefficient during a heating-up or
cooling process is determined with the transmitter.
5.1.5 Sensor
Material PEEK (Polyetheretherketone) or
PVDF (Polyvenylidenfluoride)
Note!:
Temperature, pressure and measurement medium influence the life of the
measuring cell
Temperature of
the measurement medium
-10 ... +120°C
short-term 140°C (sterilization)
Pressure max. 10 bar
1
not temperature-compensated
Measurement range
Sensor
Accuracy
(in % of the start -
of measurement range)
0...500 µS/cm
≤1%
0...1000 µS/cm
0...2000 µS/cm
≤0.5%
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
≤1%
0...2000 mS/cm
1
21
6 Installation
6.1 General
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
(1).
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.
Mounting location
The JUMO CTI-750 can be mounted in any position.
Screwing in and
unscrewing the
separate sensor
No cable twisting should occur.
Avoid tensile forces on the cable, especially jerky pulling.
Sensor details
(1)
Stainless steel sleeve: Material
1.4571
Sealing: FPM
6 Installation
22
6.2 Dimensions / Process connections, head transmitter
Installation variants
Process
connection
(1.4301)
71
130
207
40
84
177
130
71
56
37
Process
connection
(1.4301)
71
130
224
20
60
104
G
Model with
process connection 607
MK DN50
Model with
process connection 617
Clamp 21/2"
(mounting bracket not part
of scope of supply)
Process
connection
Slotted union nut
F50
(1.4301)
71
84
40
212
130
Model with process connection
107 = Stud thread G1 1/4A
108 = Stud thread G1 1/2A
110 = Stud thread G2A
Version with
process connection 686
VARIVENT® DN50
(mounting bracket not
in scope of supply)
23
6 Installation
Process
connection
(1.4301)
Ring nut
SMS 2"
(1.4301)
130
71
215
84
40
Model with
process connection 690
SMS 2"
Loading...