JUMO CTI-750 Manuel utilisateur
Inductive
Conductivity Transmitter
JUMO CTI-750
Type 202756
B 20.2756.0
Operating Instructions
12.05/00452846
Contents
1 Typographical conventions ...................................................... 5
1.1 Warning signs ..............................................................................................5
1.2 Note signs ....................................................................................................5
2 General ....................................................................................... 6
2.1 Preface .........................................................................................................6
2.2 Design of the JUMO CTI-750 .......................................................................7
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 JUMO CTI-750 as “Head-mounted transmitter” .......................................11
4.4 JUMO CTI-750 as “Transmitter with separate sensor” .............................12
5 Instrument description ........................................................... 13
5.1 Technical data for transmitter ................................................................13
6 Mounting .................................................................................. 17
6.1 General .......................................................................................................17
6.2 Dimensions / Process connections for head transmitter ...........................18
6.3 JUMO CTI-750 with separate sensor (split version) ..................................19
6.4 Mounting examples ....................................................................................21
7 Installation ............................................................................... 23
7.1 General ......................................................................................................24
8 Setup program ........................................................................ 27
8.1 Function .....................................................................................................27
9 Commissioning ....................................................................... 28
9.1 Head-mounted transmitter or transmitter with separate sensor ................28
9.2 Replacement sensor ..................................................................................28
Contents
10 Operation ................................................................................. 29
10.1 Controls ......................................................................................................29
10.2 Principle of operation .................................................................................31
10.3 Measurement mode ...................................................................................32
10.4 Operator level .............................................................................................32
10.5 Administrator level .....................................................................................40
10.6 Calibration level ..........................................................................................42
10.7 Dilution function .........................................................................................43
11 Calibration ............................................................................... 47
11.1 General .......................................................................................................47
11.2 Calibrating the relative cell constant ..........................................................47
11.3 Calibrating the temp. coefficient of the sample solution ...........................48
12 Maintenance ............................................................................ 56
12.1 Cleaning the conductivity sensor ...............................................................56
13 Eliminating faults and malfunctions ...................................... 57
13.1 Checking the instrument ............................................................................57
14 Appendix .................................................................................. 63
14.1 Before configuration ...................................................................................63
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
instructions 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
instrument. Keep the manual in a place that is accessible to all users at all
times.
Please assist us to improve these operating instructions, where necessary.
Your comments will be appreciated.
Phone +49 661 6003-0
Fax +49 661 6003-607
e-mail [email protected]
All necessary settings are described in this manual. However, if any
difficulties should still arise during start-up, please do not carry out
any unauthorized manipulations. You could endanger your rights
under the instrument warranty!
Please contact the nearest subsidiary or the head office in such a
case.
7
2 General
2.2 Design of the JUMO CTI-750
Examples
(1) Transmitter (4) Inductive conductivity sensor
(2) Process connection (5) With or without graphics LC display
(3) Temperature probe
(2)
(1)
(3)
V
ers
i
on:
Transmitter
combined with
conductivity sensor,
Type 202756/xx...
Version:
Transmitter with
separate sensor,
Type 202756/xx...
(1)
(2)
(4)
(5)
(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 JUMO CTI-750 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 JUMO CTI-750 transmitter 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
proportional 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 (4) Sample medium
(2) T-shaped flow
channel
(5) Pt100 temperature sensor
(3) Liquid loop
(2)
(1)
(3)
(4)
(5)
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
Typ: 202756/15-607-0000-82/000
VARTN: 20/00445843
F-Nr.: 00909467 01 0 0517 0001
DC 19...31 V 3W
ⱕ
F-Nr.: 00909467 01 0 0517 0001
For devices with a separate sensor (type code extensions (2) /60 or /65), 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!
The date of manufacture is coded in the “F-Nr.” (serial number):
0517 means manufactured in year 2005 / calendar week 17
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