JUMO CTI-750 Manuel utilisateur

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

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 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)

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)

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)

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)

(2) (2)

(3)

(4)

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!

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