JUMO CTI-750 Bedienungsanleitung

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

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.

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)

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)

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)

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)

(2) (2)

(3)

(4)

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

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