JUMO CTI-500 Bedienungsanleitung

JUMO CTI-500

Inductive Conductivity/Concentration and

Temperature Transmitter with switch contacts

Type 202755

Operating Instructions

20275500T90Z001K000

V5.01/EN/00444870

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.

All the nececssary settings are described in this manual. However, if any difficul-

ties should arise during start-up, please do not carry out any unauthorized mani-

pulations. You could endanger your righs under the instrument warranty!

Please contact the nearest subsidiary or the head office in such a case.

Resetting the LC display

If the brightness/contrast setting is such that the text in the display is not reada-

ble, 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 Design of the measuring transmitter ............................................................6

3 Inductive conductivity measurement ...................................... 7

3.1 Area of application .......................................................................................7

3.2 Function .......................................................................................................8

4 Identifying the device version .................................................. 9

4.1 Nameplate ....................................................................................................9

4.2 Order details ...............................................................................................10

5 Device description .................................................................. 13

5.1 Transmitter technical data ......................................................................13

6 Mounting .................................................................................. 18

6.1 General .......................................................................................................18

6.2 Head-mounted transmitter .........................................................................19

6.3 Split version (separate sensor) ...................................................................20

7 Installation ............................................................................... 25

7.1 General ......................................................................................................26

8 Setup program ........................................................................ 29

8.1 Function .....................................................................................................29

9 Commissioning ....................................................................... 30

9.1 Head-mounted transmitter or split version ................................................30

9.2 Replacement sensor ..................................................................................30

10 Operation ................................................................................. 31

10.1 Controls ......................................................................................................31

Contents

10.2 Principle of operation .................................................................................33

10.3 Principle of operation .................................................................................35

10.4 Measurement mode ...................................................................................36

10.5 Operator level .............................................................................................36

10.6 Administrator level .....................................................................................44

10.7 Calibration level ..........................................................................................46

10.8 The dilution function ...................................................................................47

11 Calibration ............................................................................... 51

11.1 General .......................................................................................................51

11.2 Calibrating the relative cell constant ..........................................................51

11.3 Calibrating the temp. coefficient of the sample solution ...........................52

12 Maintenance ............................................................................ 60

12.1 Cleaning the conductivity sensor ...............................................................60

13 Eliminating faults and malfunctions ...................................... 61

13.1 Checking the device ..................................................................................61

14 Appendix .................................................................................. 66

14.1 Before configuration ...................................................................................66

15 China RoHS ............................................................................. 70

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.

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.

2.2 Design of the measuring transmitter

Examples

(1) Transmitter (4) Inductive conductivity sensor

(2) Process connection (5) With or without graphics LC display

(3) Exposed temperature sensor

(2)

(1)

(3)

Head-mounted version:

Transmitter combined with

conductivity sensor,

Type 202755/xx...

Split version:

Transmitter with

separate sensor,

Type 202755/xx...

(1)

(2)

(4)

(5)

(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.

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 measuring transmitter 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. Immersion

models up to 2000 mm are available for application in open containers or

sluices.

Typical areas of

application - freshwater and wastewater engineering

- HVAC systems and cooling tower monitoring (dilution control)

- flushing baths (e.g. monitoring electroplating baths)

- inlet and final control in on-site sewage treatment plants

- concentration monitoring

- vehicle washing plant

3 Inductive conductivity measurement

3.2 Function

of the

transmitter The transmitter has been designed for use on site. A rugged housing protects

the electronics and the electrical connections from corrosive environmental

conditions (IP67 enclosure). 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) Temperature sensor, exposed (1a) optionally:

internal temperature sensor

(2) Measuring cell body in PP (3) Measurement coils

(4) Liquid loop

(2)

(1)

(3)

(4)

(1a)

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 = 0220465201018240001

The characters in question are in positions 12 to 15 (from the left).

The device was therefore produced in the year 2018 in its 24th calendar week.

Description Description on the

nameplate Example

Device type Typ 202755/15-168-0-82/000

Fabrication number F-Nr 0220465201018240001

Voltage supply - DC 19 ... 31 V

For devices with a separate sensor (type code extensions /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 flag tag attached to the connecting cable) must

match the serial number marked on the nameplate of the transmitter!

4 Identifying the device version

4.2 Order details

4.2.1 Head-mounted transmitter

1The PC setup program is required for programming the device.

2Special tee is not included in delivery.

3If required, order extra code /580

4Indicate the type code extension in succession separated by a comma.

5Only in case of process connection 168 and 169 in combination with type code extension 268.

6Maximum medium temperature 60°C.

7Assembly material (holding clamp) not part of the supplied kit. If required, please order

additionally.

8Not possible in conjunction with extra code 768 and/or 844.

(1) Basic types

202755/10 JUMO CTI-500 Head transmitter without display/keyboard, consisting of

transmitter with permanently mounted sensor1

202755/15 JUMO CTI-500 Head transmitter with display/keyboard

(2) Process connection

168 PVC union nut G 1 ½ A2,6

169 Stainless steel union nut G 1 ½ A2

607 Taper socket with union nut DN 50 DIN 11851 (dairy compression fitting)

617 Clamping socket (clamp) 2 ½" similar to DIN 326767

690 SMS DN 2"

(3) Immersion length

0 see chapter 6.2 "Head-mounted transmitter", page 19

(4) Electrical connection

82 cable glands

83 M12 plug / socket connector (instead of cable glands) 3

84 two M16 cable glands and one blanking plug

(5) Extra codes 4

000 no extra code

062 with DNV GL approval8

268 internal temperature sensor

580 1 set M12 plug/socket connectors

768 Measurement cell material PVDF 5

844 Voltage supply AC 24 V

(1) (2) (3) (4) (5) (5)

Order code / - - / , ...

Order example 202755/10 / 168 - 0 - 82 / 000 ,

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