Endress+Hauser mypro CLM 431, mypro CLD 431 Operating Instructions Manual

BA 202C/07/en/02.00
No.51500561
Software version 2.00 or later

mypro

CLM 431 / CLD 431
Conductive
Two-Wire Transmitter
for Conductivity and
Resistance

Operating Instructions

Endress Hauser

The Power of Know How

Please familiarise yourself with the instrument before
you take any other steps:

Safety

General information

You wish to install and prepare the instrument for start­up. The required steps are described in these chapters:

Installation

You wish to operate or reconfigure the instrument. The
operating concept is explained in these chapters:

Operation

Functional description

Interfaces

When you encounter problems or when the instrument
requires maintenance, refer to these chapters for help:

Troubleshooting

Service and maintenance

Accessories

Technical data

LM431CE0.CHP

Table of contents

1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.1 Symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2 Storage and transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.3 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.4 Packaging and disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.5 Productstructure....................................................... 3

2 Safety ............................................................... 5

2.1 Intendeduse.......................................................... 5

2.2 Generalsafetynotes.................................................... 5

2.3 Installation, start-up, operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.4 Monitoringandsafetyfeatures............................................ 6

2.5 Immunity to interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.6 Certificate of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.7 Notes for installation in hazardous areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1 Measuring system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.3 Mounting............................................................ 10

3.4 Connection of conductivity measuring cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.5 Electrical connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.6 Connection of MyPro in Ex area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.1 Start-up ............................................................. 20

4.2 Power-up, factory settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.3 Operating concept / operating elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.4 Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.5 Lockingconcept...................................................... 22

4.6 Operatinglevel1 ..................................................... 23

4.7 Operatinglevel2...................................................... 26

5 Functional description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.1 Main parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.2 Basic functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

5.3 Calibration parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.4 Alpha table ...................................................... 32

5.5 Polarisationdetection.................................................. 33

5.6 Diagnosis............................................................ 33

5.7 Service and simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

5.8 Userinfo............................................................. 36

6 Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

6.1 HART.............................................................. 37

6.2 PROFIBUS-PA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

7.1 Error indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

7.2 Diagnostic codes (error codes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

8 Service and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

8.1 Cleaning............................................................. 44

8.2 Repairs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

9 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

10 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

11 Index............................................................... 49

mypro CLM 431 / CLD 431 conductive Table of contents

Endress+Hauser 1

1 General information

1.1 Symbols used

Warning:

This symbol alerts to hazards which
may cause serious injuries as well as
damage to equipment if ignored.

Note:

This symbol indicates important
items of information. Ignoring this
information may result in malfunction.

1.2 Storage and transport

The packaging material used to store or trans­port the instrument must provide shock pro­tection. Optimal protection is provided by the
original packaging materials.

Conformance with the ambient conditions
(see Technical data) must be assured.

1.3 Unpacking

Verify that the packaging and contents are
undamaged! Inform the post office or freight
carrier of any damage. Damaged merchan­dise must be retained until the matter has
been settled.

Check that the delivery is complete and
agrees with the shipping documents and your
order (refer to nameplate for type and variant).

The delivery includes:

MyPro CLM 431:

• Measuring transmitter MyPro CLM 431

• Housing fastening elements

• Prepared cable (depending on version)

• Operating instructions BA 202C/07/en

• Certificate of conformity
(depending on version)

MyPro CLD 431:

• Measuring transmitter MyPro CLD 431

with measuring cell CLS 12

• Operating instructions BA 202C/07/en

• Certificate of conformity
(depending on version)

Keep the original packaging materials for
future storage or shipping of the instrument.

If you have any questions, consult your sup­plier or the Endress+Hauser sales agency in
your area (see back cover of these operating
instructions for addresses).

1.4 Packaging and disposal

Package the assembly properly for reuse at a
later point in time. Optimal protection is
provided by the original packaging materials.

Observe local regulations for disposal.

General information mypro CLM 431 / CLD 431 conductive

2 Endress+Hauser

1.5 Product structure

You can identify the instrument variant by the
order code on the nameplate.

4 ... 20mA , HART

s er.-no.

or der code

MYPRO

ENDRESS+HAUSER

U min 12V
U max 30V

Pmax 750mW

xxx xx

-35°C ... 250°C

0 ... 60mS / 0 ... 200 MΩ0 ... 60mS / 0 ... 200 MΩ

CLM431-A3C2ME

Fig. 1.1

Example of
nameplate of CLM 431

LM431CE1.CHP

Certificate type

A Version for non-Ex area
H Cenelec EEx ia/ib IIC T4 (dir. 76/117/EEC; dir. 94/9/EC)

Cable entry for power supply

1 Cable gland Pg 13.5
3 Cable entry M 20 x 1.5
5 Cable entry NPT ½ “
7 Cable entry G ½
8 Cable entry M 12

Electronics, communication, display

A 4 ... 20 mA, HART, without display
B 4 ... 20 mA, HART, liquid crystal display
C PROFIBUS-PA, without display
D PROFIBUS-PA, liquid crystal display

Accessories

1 No accessories
2 For wall and pipe mounting (DN 60)
3 For wall and pipe mounting (DN 30 ... 200)
4 With angle bracket for flange mounting

Preset measuring parameter

C Conductive, conductivity measurement
M Conductive, resistance measurement

Cable, measuring cell connection

A Without cable
C With CYK 71 cable, length 1 m
E With CYK 71 cable, length 2 m

CLM 431-

complete order code

MyPro CLM 431 conductive

mypro CLM 431 / CLD 431 conductive General information

Endress+Hauser 3

4 ... 20mA , HART

s er.-no.

or der code

MYPRO

ENDRESS+HAUSER

U min 12V
U max 30V

Pmax 750mW

xxx xx

-35°C ... 160°C

0,04 ...20 S /cm/ 0 ... 25 MµΩ0,04 ...20 S /cm/ 0 ... 25 MµΩ

CL D-A 1D1CA

Fig. 1.2

Example of
nameplate of CLD 431

Certificate type

A Version for non-Ex area
H Cenelec EEx ia/ib IIC T4 (dir. 76/117/EEC; dir. 94/9/EC)

Cable entry for power supply

1 Cable gland Pg 13.5
3 Cable entry M 20 x 1.5
5 Cable entry NPT ½ “
7 Cable entry G ½
8 Cable entry M 12

Electronics, communication, display

A 4 ... 20 mA, HART, without display
B 4 ... 20 mA, HART, liquid crystal display
C PROFIBUS- PA, without display
D PROFIBUS-PA, liquid crystal display

Accessories

1 No accessories

Measuring cell, process connection and material

CA CLS 12, 0.04 ... 20 µS, G1, stainless steel1.4571
CB CLS 12, 0.1 ...200 µS, G1, stainless steel 1.4571

CLD 431-

complete order code

MyPro CLD 431 conductive

General information mypro CLM 431 / CLD 431 conductive

4 Endress+Hauser

2 Safety

2.1 Intended use

The MyPro CLM 431 / CLD 431 is a field­tested and reliable measuring transmitter
for determining the conductivity and specific
resistance of liquid media.

In particular, the MyPro CLM 431 / CLD 431
is suitable for use in the following areas of
application:

• Chemical industry

• Pharmaceutical industry

• Foodstuffs industry

• Drinking water treatment

• Condensate processing

• Municipal sewage treatment plants

• Industrial effluent treatment

The instrument design permits operation in
explosive atmospheres (zone 1 according to
ElexV).

2.2 General safety notes

This device has been manufactured for safe
operation according to the state of the art in
engineering and conforms to the applicable
regulations and European standards (see
Technical data). It has been designed
according to EN 61010-1 and has left the
manufacturer’s works in perfect condition.

However, if used improperly or for purposes
other than the intended purpose, it may be
dangerous, e.g. due to incorrect connection.

Warning:

• Operating this instrument in any

way other than as described in
these instructions may compro­mise the safety and function of the
measuring system and is there­fore impermissible.

• The notes and warnings in these

installation and operating instruc­tions must be strictly adhered to!

2.3 Installation, start-up, operation

Warning:

• This device may only be installed,

connected electrically, commis­sioned, operated and serviced by
properly trained personnel author­ized by the system operator.

• The personnel must be familiar

with these operating instructions
and must adhere to the instructions
described therein.

• Before connecting the instrument

to the mains, make sure that the
mains voltage matches the voltage
rating on the nameplate.

• When connecting an instrument in

an explosive atmosphere, adher­ence to the applicable regulations
is mandatory (see chapter 2.7).

• Check that all connections have

been properly made before power­ing up the system!

• The instrument housing must be

grounded before start-up!

• Damaged equipment that may be

dangerous must not be operated
and should be clearly identified as
being defective.

• Any troubleshooting of the measur-

ing system is to be performed
exclusively by authorized, trained
personnel.

• If faults cannot be remedied, the

instrument must be removed from
service and secured to prevent
accidental start-up.

• Repair work must be carried out

directly by the manufacturer or
by the Endress+Hauser Service
Organization.

LM431CE2.CHP

mypro CLM 431 / CLD 431 conductive Safety

Endress+Hauser 5

2.4 Monitoring and safety features

Monitoring features

If a problem ever occurs, an alarm symbol
flashes on the display, and a defined error
current (22 mA +/– 0.5 mA) is output via the
current interface.

Safety features

This instrument is protected against external
influences and damage by the following
design measures:

• Massive metal housing

• UV-resistant front panel

• Housing protection type IP 65

2.5 Immunity to interference

This instrument has been tested according to
the applicable European standards for indus­trial applications with regard to electromag­netic compatibility and has been protected
against electromagnetic interference (see
Technical data in chapter 10).

Warning:

• The specified immunity to inter-

ference only applies for devices
connected as outlined in these
operating instructions.

2.6 Certificate of conformity

The MyPro CLM / CLD 431 transmitter has
been developed and manufactured in
accordance with currently valid European
standards and directives and is suitable for
use in hazardous areas.

Compliance with the harmonised European
standards for the use of the equipment in
hazardous areas is confirmed by this certifi­cate of conformity.

Note:

For the CLM 431-G/H and
CLD 431-H versions an EC
conformity certificate is supplied.
For the -H versions additional safety
instructions (XA 173C/07/en) are
supplied.

2.7 Notes for installation in hazardous areas

The MyPro CLM 431 / CLD 431 transmitter
has been manufactured and tested in
accordance with the harmonised European
regulations (CENELEC) for »electric equip­ment for hazardous areas«. The equipment
complies with the basic requirements of the
76/117/EEC and directive and is suitable for
use in hazardous areas.

Warning:

• The applicable national regula-

tions are to be observed for instal­lation and operation.

• All lines conducting signals are to

be shielded according to VDE
0165 and to be routed separately
from other control lines.

Note:

For helpful information on the instal­lation and operation of electric
equipment in hazardous areas,
please refer to the Endress+Hauser
fundamental information brochure
GI 003/11/d »Explosionsschutz von
elektrischen Betriebsmitteln und
Anlagen« (»Explosion protection of
electric equipment and systems«).
This brochure can be ordered from
the Endress+Hauser sales offices.

Safety mypro CLM 431 / CLD 431 conductive

6 Endress+Hauser

3 Installation

3.1 Measuring system

The complete measuring system comprises:

• the MyPro CLM 431 transmitter

• a conductive two-electrode
measuring cell with an integrated
temperature sensor, e.g. CLS 12

• a measuring cable, e.g. CYK 71

• or the compact unit MyPro CLD 431 with
conductivity measuring cell CLS 12

CLS 12

conductive conductivity

measuring cell

with integrated temperature

sensor

Measuring cable

CYK 71

Measuring transmitter

MyPro CLM 431

LM431SYS.CDR

Fig. 3.1

Complete measuring
system consisting of
MyPro CLM 431 with
measuring cable CYK 71
and conductivity
measuring cell
CLS 12

Measuring transmitter

MyPro CLD 431

LM431SY2.CDR

Fig. 3.2

Compact unit
MyPro CLD 431
with integrated
conductivity measuring
cell CLS 12

LM431CE3.CHP

mypro CLM 431 / CLD 431 conductive Installation

Endress+Hauser 7

3.2 Dimensions

3.2.1 MyPro CLM 431 conductive

104

137

53

74

227

MASSCLM.CDR

Fig. 3.3

Dimensions of
MyPro CLM 431

Installation mypro CLM 431 / CLD 431 conductive

8 Endress+Hauser

3.2.2 MyPro CLD 431 conductive

MASSCLD.CDR

104 137

321

115

∅ 25

53

Fig. 3.4

Dimensions of
MyPro CLD 431
with CLS 12

G1

LM431CE3.CHP

mypro CLM 431 / CLD 431 conductive Installation

Endress+Hauser 9

3.3 Mounting

3.3.1 MyPro CLM 431 conductive

The measuring transmitter MyPro CLM 431
can be installed on a wall or pipe using the
holder (depending on version) supplied with
the instrument.

The holder is attached to the MyPro housing
with two screws. The housing can be rotated
90° thanks to four boreholes.

MOUNT3D2.CDR

MOUNT2D2.CDR

82

8

53

∅ 30 ... 200

165

102

MOUNT3D1.CDR

Fig. 3.5

Left:

Pipe mounting DN 60,
with mounting bracket

Right:

Pipe mounting
DN 30 ... 200,
with mounting bracket
(horizontal attachment)

MOUNT2D1.CDR

∅ 60.3

77

84

∅ 6

77

Fig. 3.6

Left:

Pipe mounting DN 60,
with mounting bracket

Right:

Pipe mounting
DN 30 ... 200,
with mounting bracket
(vertical attachment)

Installation mypro CLM 431 / CLD 431 conductive

10 Endress+Hauser

MOUNT3D3.CDR MOUNT3D4.CDR

69

Fig. 3.7

Left:

Flange mounting with
angle bracket

Right:

Wall mounting with
mounting bracket

MOUNT2D3.CDR

177

254

MOUNT2D4.CDR

97

118

160

53

Fig. 3.8

Left:

Flange mounting with
angle bracket

Right:

Wall mounting with
mounting bracket

LM431CE3.CHP

mypro CLM 431 / CLD 431 conductive Installation

Endress+Hauser 11

3.3.2 MyPro CLD 431 conductive

The compact version can be installed in a
pipe with medium flow. The distance of the
measuring cell from the inside pipe wall
does not influence the accuracy of the
measurement.

Note:

• The torque to fasten the thread

must not exceed 25 Nm.

• Observe the temperature limits

when installing the compact
version (see Technical data,
fig. 10.1).

MONTAGE6.CDR

flow direction

Fig. 3.9

Pipe mounting of
MyPro CLD 431

Installation mypro CLM 431 / CLD 431 conductive

12 Endress+Hauser

3.3.3 Instrument orientation

Housing orientation

Following horizontal or vertical attachment to
a wall or pipe, the orientation of the housing
can be changed to provide optimal
accessibility.

Note:

Pay attention to the keypad position
during installation. The keys should
be easily accessible.

Display rotation

The display can be rotated to permit perfect
viewing in different mounting positions. It can
be rotated in four 90° steps.

Refer to the figure below for the procedure to
follow.

270°

AUSRICHT.CDR

Fig. 3.10

Housing orientation

Left:

MyPro CLM 431

Right:

MyPro CLD 431

4 x 90°

press

EINBAU.CDR

Fig. 3.11

Removal and installation
of display



Unscrew the lid over
the display. Push the tab
towards the outside.



Tilt the display

forward and remove.



Turn the removed
display in 90° steps.
Reinstall in the desired
orientation.



To reinstall, latch the
display back into the
guide.

LM431CE3.CHP

mypro CLM 431 / CLD 431 conductive Installation

Endress+Hauser 13

3.4 Connection of conductivity measuring cells

3.4.1 Suitable measuring cells

The following conductive conductivity measur­ing cells can be used for the measuring trans­mitter MyPro CLM 431:

Note:

The measuring range depends
on the application range of the
measuring cells used.

3.4.2 Measuring cable connection

Conductivity measuring cells are connected
by means of a special preassembled,
shielded, multi-core measuring cable, type
CYK 71. Should an extension of the measu­ring cable be necessary, use junction box VS
in conjunction with extension cable CYK 71.

10

0.01

0.0010.01

0.1

0.1

1

1

10

10

100

100

1 100 1000

k

=1CLS 21

k

= 0.1

CLS 12 / 13 / 15 / 19

k

= 0.1

CLS 12 / 13 / 15 / 19

k

= 0.01CLS 12 / 13 / 15 / 19

k

= 0.01CLS 12 / 13 / 15 / 19

µS/cm mS/cm

M·cmΩ

TI172E02.CDR

Fig. 3.12

Overview of suitable
measuring cells with
measuring ranges

Installation mypro CLM 431 / CLD 431 conductive

14 Endress+Hauser

Construction and preparation of CYK 71 cable with examples for connection

13

13

12

12

11

11

14

14

15

15

16

16

17

17

ϑ

ϑ

Cd /MΩ

Cd /MΩ

ϑ

ϑ

bk

bk

gn wt ye

31 2

34 21

gn wt ye

gn wt ye

gn wt ye

LM431C2E.CDR

Fig. 3.14

Connection examples

Left:

Connection of measuring
cell CLS 19 with CYK 71

Right:

Connection of measuring
cell CLS 12 with CYK 71

7

6

3

8

5

4

2

1

Warning:

Semiconductor layer must
be removed down to inner
screen for connection!

LM431K71.CDR

Fig. 3.13

Construction / preparation
of special measuring
cable CYK 71

1 Inner conductor

(measuring signal)
2 Inner insulation
3 Black semiconductor

layer
4 Inner screen

(measuring signal)
5 2nd insulation
6 Auxiliary cores for

Pt 100 (gn/wt/ye)
7 Outer insulation
8 Outer screen

LM431CE3.CHP

mypro CLM 431 / CLD 431 conductive Installation

Endress+Hauser 15

Instructions for measuring cable connection to CLM 431

Note:

The screen can also be connected
to the screen terminal on the
terminal block.











Loosen fastening screws and pull off
connection hood.

Loosen connection hood Pg cable gland and
thread cable through.

Connect cable ends accordingto terminal
assignment diagram (figure 3.14).

Replace connection hood and tighten
fastening screws.

ANSCHL2.CDR

Connect the screen following sequence a to c.

ab c

Pull the cable through until the Pg cable gland can
grasp the cable insulation.Tighten the Pg cable
gland.

Fig. 3.15

Measuring cable
connection

1514131211

17

16

ANSCHL.CDR

Screen

Fig. 3.16 Terminal block

Installation mypro CLM 431 / CLD 431 conductive

16 Endress+Hauser

3.5 Electrical connection

The measuring transmitter MyPro CLM 431 /
CLD 431 has separate connection compart­ments for the power supply and measuring
cell connections.

The terminals for the two-wire line are located
under the screwed cover on the right side of
the instrument.

Proceed as described below to connect the
MyPro CLM 431 / CLD 431:

• Connect the MyPro CLM 431 / CLD 431
transmitter to a 12 ... 30 V power source

• Ground the instrument via the outer
ground terminal.

• Ground the two-wire line screen via the
ground terminal in the connection
compartment.

Note:

• Keep the screen ground line as

short as possible. Connect the
screen directly to the ground
terminal. This also applies to
connection of junction box VS.

• If the instrument is mounted on a

post, ground the post to increase

immunity to interference. Running
the cable in the post will improve
interference suppression.

• Immunity to interference is only

guaranteed when the instrument is
grounded via the shielded two­wire line.

4...20 mA

Test

1

3

2

+

0000

Power supply

connection compartment

Measuring cell

connection

compartment

Ground terminal for

cable screen

Ground terminal for

instrument

LM431AN1.CDR

Fig. 3.17

Electrical connection
compartment

4...20 mA

Tes t

1

3

2

+

+

0000

LM431AN2.CDR

Supply voltage

12 ... 30 V DC

Signal output

4 ... 20 mA current

Fig. 3.18 Electrical connection

LM431CE3.CHP

mypro CLM 431 / CLD 431 conductive Installation

Endress+Hauser 17

Resistance

The required minimum supply voltage of the
transmitter depends on the resistance of the
evaluation instrument connected.

The following diagram shows the required
supply voltage when connecting the HART
interface and the maximum admissible
resistance in the transmitter circuit.

The maximum admissible resistance R

max

is

derived from the following formula:

with UV= supply voltage of the

transmitter circuit (DC)

UM= terminal voltage of the

transmitter (12 V DC)

I

max

= maximum current of the

transmitter (22 mA)

R

UU

VM

ax

ma x

m

I

=

−

30

U [V DC]

V

U [V DC

]

V

20

17,5

12

10

100

200

820

750

250

300

400

500

600

700

800

900

R [ ]ΩR [ ]Ω

supply voltage

resistance with

HART interface

resistance

maximum
admissible
resistance

BUERDE.CDR

Fig. 3.19

Admissible resistance in
the transmitter circuit

Installation mypro CLM 431 / CLD 431 conductive

18 Endress+Hauser

3.6 Connection of MyPro in Ex area

Connection of MyPro CLM 431-G

The CLM 431-G instrument approved
according to directive 76/117/EEC may be
installed in Ex area 1 or 2. Observing the
European directive IEC 60079-14, the
intrinsically safe sensor circuit (ia) may also
pass through zone 0.

Connection of MyPro CLM 431-H

The CLM 431-H instrument approved
according to directive 76/117/EEC may be
installed in Ex area 1 or 2. Observing the
European directive IEC 60079-14, the
intrinsically safe sensor circuit (ia) may also
pass through zone 0.

Connection of MyPro CLD 431-H

The CLD 431-H instrument approved
according to directive 76/117/EEC may be
installed in Ex area 1 or 2.

Only devices with an intrinsically safe output
circuit may be connected to Ex versions of
the measuring transmitter.

Warning:

The display and connection
compartment covers must remain
closed during operation.

Note:

Also observe the safety notes for
instrument installation in explosive
atmospheres in chapter 2.7 of these
operating instructions.

Ex zone 1

Control room (non-Ex)

ia circuit
(sensor)

ib circuit

(signal output / power supply)

LM431-EX.CDR

Ex zone 0 / 1

Fig. 3.20

Measuring transmitter and
measuring cell in Ex area

LM431CE3.CHP

mypro CLM 431 / CLD 431 conductive Installation

Endress+Hauser 19

4 Operation

4.1 Start-up

Note:

• Familiarise yourself with the opera-

tion of the measuring instrument
before switching it on for the first
time!

• Before power-up, check that all

connections have been properly
made!

• Make sure that the measuring cell

is immersed in the medium to be
measured or a calibration solution.
This ensures that a plausible value
will be displayed.

4.2 Power-up, factory settings

The MyPro CLM 431 / CLD 431 does not have
an “ON switch”. When power is applied, the
instrument performs a self-test and then starts
up in the measuring mode using the parame­ters last set. The display should be similar to
one of the figures below. Of course, the dis-

play value may be different. µS/cm or mS/cm
on the display stands for conductivity, MΩ cm
or kΩ cm stands for resistance measurement.

If the display indicates a plausible value, the
cell constant can be entered, allowing the
transmitter to display the measured values
correctly. The instrument is then ready for
measurement.

Use the function “

type

” to switch between
the operating modes conductivity and
resistance, see chapter 5.1.

Refer to chapters 4.6.4 and 5 for notes on
calibration.

Fig. 4.1 Conductivity measurement

Fig. 4.2 Resistance measurement

Operation mypro CLM 431 / CLD 431 conductive

20 Endress+Hauser

4.3 Operating concept / operating elements

The intelligent MyPro CLM 431 / CLD 431
transmitter can be operated in the field with 4
keys or via the HART interface (hand-held
terminal or Commuwin II) or via Profibus PA.

The 4 keys are located on the side of the
instrument under a hinged cover and can be
actuated with a pointed object, such as, for
example, the tip of a ball point pen.

The printing on the adhesive label above the
key pad shows the key arrangement .

The following functions can be accessed in
the field via the keypad:

Operating level 1

• Verification of active settings (secondary
parameter)

• Error diagnosis (diagnostic parameters)

• Current interface settings (instrument
parameters)

• Calibration

Operating level 2

This level comprises all other settings, e.g.
switching from conductivity to resistance
measurement.

Key functions at operating level 1:

+ Select secondary parameter /

set values

– Select diagnostic parameters /

set values

F Instrument configuration
C Sensor calibration

HARTHandterminal
1 Offline
3 Transfer
4 Frequenzgerät
5Extras

2 Online➔

I

O

–

+

C
F

F

>3s

Keypad on
instrument

Hand-held
HART terminal

Commuwin II via HART

Commuwin II
via PROFIBUS PA

LM431OP.CDR

Operating level 1

• Daily workand diagnosis

Operating level 2

• Configuration and diagnosis

• Plain-textmenu guidance

• Clearoverall view in the form of
a matrix

• Graphicaluser interface

• Dataentry/recorder function

• Upload/download archiving

• Off-lineparameter setting

• Extendedcommunication functions

• Access toall instrument parameters

• Permitsinterconnectionof units from
different manufacturers

Fig. 4.4

Operation of MyPro
CLM 431 / CLD 431 is
possible via:
– keys on instrument
– hand-held HART terminal
– Commuwin II via HART
– Commuwin II via

PROFIBUS-PA.

–

+

C
E

–

+

C

F

KA010Y52.CDR

Key actuation, e.g.

with the tip of a

ball point pen

Fig. 4.3 Keypad

LM431CE4.CHP

mypro CLM 431 / CLD 431 conductive Operation

Endress+Hauser 21

4.4 Display

The figure on the left shows the complete
MyPro display.

Various symbols are displayed depending on
the instrument settings.

4.5 Locking concept

Access to instrument operation and write pro­tection for field operation can be disabled via
the keypad or the communication interface.
The keypad has priority over the interface, i.e.
an instrument which has been locked in the
field cannot be unlocked via the communica­tion interface.

Note:

• The previous locking status is

retained after a power failure or
reset.

• The factory setting (status at time

of delivery) is ‘unlocked’.

Unlocking / locking via interface and field operation (operating level 2):

See chapters 4.7 and 5.

%

LM431DIS.CDR

–

+

C

F

–

+

C

F

Instrument is locked

Parameters can only be
read in the field and via
communication; „Prot“
(= write-protected) is dis­played when operation is
attempted

Instrument is
unlocked

Press „–“ and
„C“ once at the

same time

Press „+“and
„F“ once at the

same time

Operation mypro CLM 431 / CLD 431 conductive

22 Endress+Hauser

4.6 Operating level 1

Display mode selection

The display normally shows the currently
measured value. The four operating keys are
used to access the various display modes
explained on the pages to follow.

4.6.1 Secondary parameter menu (temperature)

The secondary parameter menu is used
to display parameters that influence the
measured value (temperature).

If no other key is pressed for 30 s, the
instrument automatically switches back
to the measured value display.

F

C

Normal meas.

mode

Key Display

Description

Temperature menu

Call up with „+” and continue
See chapter 4.6.1

Diagnostic parameter menu

Call up with „–“ and continue
See chapter 4.6.2

Parameter setting menu

Call up with „F” and continue
See chapter 4.6.3

Calibration menu

Request calibration with „C”, continue
See chapters 4.6.4 and 4.7

ANZ1.CDR

Normal meas.

mode

Key Display

Description

Temperature

Current temperature in °C
at the temperature sensor

ANZ2.CDR

LM431CE4.CHP

mypro CLM 431 / CLD 431 conductive Operation

Endress+Hauser 23

4.6.2 Diagnostic parameter menu

The diagnostic parameters show the current
temperature offset (from temperature calibra­tion) and the diagnostic codes (error mes­sages) that are active, beginning with the

highest priority (Prio_1). If no other key is
pressed for 30 s, the instrument automatically
switches back to the measured value display.

4.6.3 Parameter settings

This function can be used to display and set
the values that are essential for start-up.
These are:

• Temperature coefficient (α value)

• Cell constant

• Meas. value for 4 mA current output

• Meas. value for 20 mA current output

The value being edited flashes. When the
desired value has been entered, it is

accepted with „F”, and the system advances
to the next parameter.

Adjustment ranges

Temperature coeff. α:0.00 to 10.00 %/K
Cell constant C: 0.0025 to 99.99 cm

–1

Minimum distance 20 µS/cm / 200 µS/cm
4/20 mA value: 2 mS/cm / 20 mS/cm

(dep. on meas. range)

Note:

A minimum distance between the 4
and 20 mA values is required (see
chapter 10) ➞ an error is signalled if
this condition is not fulfilled.

Diagnostic codes (up to 5 messages)

Continue with „–“
Display of „E–––“ indicates ‘no error’

Temperature offset

For checking of and information on tem­perature calibration (see chapter 4.6.4 )

ANZ3.CDR

Normal meas.

mode

Key Display

Description

F

F

F

F

F

Temperature coefficient

Display of current α value
Edit with „+“or„–“ (value flashes)

Cell constant

Display of current cell constant
Edit with „+“or„–“ (value flashes).

Measured value at 4 mA

Display of current value at 4 mA
Edit with „+“or„–“ (value flashes)

Measured value at 20 mA

Display of current value at 20 mA
Edit with „+“or„–“ (value flashes)

ANZ4.CDR

Normal meas.

mode

Key Display

Description

Operation mypro CLM 431 / CLD 431 conductive

24 Endress+Hauser

4.6.4 Calibration

The calibration menu of the MyPro CLM 431 /
CLD 431 is used for temperature and conduc­tivity calibration. The conductivity calibration,
i.e. the determination of the cell constant, can
be performed with or without automatic tem­perature compensation. The temperature
coefficient and the uncompensated conducti-

vity of the calibration solutions as a function of
temperature are documented.

The calibration menu can be exited anytime
by pressing the „F“ key; an error message

(calibration aborted) will be displayed.

C

C

C

C

F

F

F

C

F

C

F

Beginning of calibration

Place measuring cell in calibration solution.
Continue with „C“, abort with „F“

Temperature calibration

The measured value determined by the
MyPro is displayed. The value can be edited

directly with „+“ and „–“ for adjustment to the
correct value. The MyPro automatically deter­mines the temperature offset (see chapter

4.6.2 „Diagnostic parameter menu“)

Temperature coeff. of calibration solution

If the temperature of the calibration solution
differs from the reference temperature (instru­ment), you must choose one of the following
alternatives to proceed:

1.) Calibration with uncompensated

conductivity, i.e. α =0.
Enter the uncomp. conductivity of the
calibration solution at the current
temperature.

2.) Calibration with automatic

temperature compensation,

i.e. enter the α value of the calibration
solution at the current temperature.

Conductivity calibration

Entry of conductivity of calibration solution
with „+“and„–“

Depending on preceding step:
For 1.) Determine uncomp. conductivity of

calibration solution at current
temperature and enter.

For 2.) Enter compensated value of

calibration solution at reference

temperature.
Cell constant editing may be performed
by entering the cell constant from the
nameplate or from the quality certificate of

End of calibration

Continue measurement with „C“or„F“; the
current output is re-enabled.

ANZ6.CDR

Normal meas.

mode

Key Display Description

LM431CE4.CHP

mypro CLM 431 / CLD 431 conductive Operation

Endress+Hauser 25

4.7 Operating level 2

Operating level 2 covers all operating func­tions of the MyPro 431 / CLD 431 not included
in level 1. These functions are arranged in
menus by function group.

• This level is accessed from the normal

measuring mode by pressing and holding
the „F“ key for more than 3 seconds.

• Press the „+“or„–“ key to select the

desired function group.

• The function groups and functions within a

function group are accessed by pressing
the „F“ key.

• When the desired function appears on the

display, the value or selection can be
changed with „+“ or „–“.

• Press the „F“ key to acknowledge and

proceed.

• The „advanced“ operating level is exited
by pressing the „F“ key for more than 3
seconds or automatically after 3 minutes

if no other key is pressed (value is not
stored).

Main parameter

Basic functions

Calibr.param.

a table

Monitoring

Diagnosis

Service and sim.

Signal damping

T.comp. medium

Autom.HOLD

No.of elements

Polarisation detection

Error code Error status Error assignment Error delay Unlock/Lock

Software version

Device address

Hardware version Factory defaults Current simulation Output current

Selection of elem. Temp. value Temp. coeff.

Reference temp. Cable resistance ATC/MTC MTC temperature Temp. offset

Cond./MOhm

nonE LIn
nACL tAb
Pur

on oFF

2...10

on oFF

1 ... 255 0

1

no YES

0 ... 30 0000 .... 9998

00.00 ... 99.99

0 ... 126

00.00 ... 31.99

no InSt
SEnS uSEr

on oFF

4.00 ... 22.00

1 ... number –20 ... 250 [°C] 0.00 ... 10.00

–20 ... 250 [°C] 0.00 ... 50.00 Ω

oFF on t
oFF t..

–20 ... 250 [°C] –20 ... 20 [°C]

Cond rES

Normal meas.mode

>3 s

F

F

F

F

F

F

F

F

F

F

F

F

F F F F F

F FF F F F

F F F

F F F F F

F

F

>3 sor
no key pressed in
> 3 min

F

1...10

MENUESTR.CDR

The displays shown in this overview are examples and
may differ during actual operation.

Functions marked with a blackened
corner are not available in the
PROFIBUS-PA variant.

p. 27

p. 29

p. 31

p. 32

p. 33

p. 33

p. 35

Operation mypro CLM 431 / CLD 431 conductive

26 Endress+Hauser

5 Functional description

This chapter contains detailed descriptions of
and information on the individual MyPro func-

tions referred to the matrix representation of
the hand-held terminal or Commuwin II.

5.1 Main parameters

Function group

MAIN PARAMETERS

Function/display

Matrix

VH

1)

Description

Setting

Default Customer

Measured value

VH00Displays the currently measured conductivity or

resistance value.

–

Temperature

VH01Displays the currently measured temperature value (see

chapter 4.6.1).

Note:

This is only displayed if the temperature
measurement is enabled (see VH 17: type of
temperature compensation).

Value range:

–35.0 ... 250.0 °C

–

Operating state

VH02Output of current operating state, e.g. indicates when field

calibration is currently being performed.

Note:

This function is only intended for operation with
the Commuwin II user interface or the
hand-held HART®terminal.

Commuwin: Meas., cal. active, parameter setting

–

Unit of main
parameter

VH03Selects the unit for the parameter measured.

Note:

• This is only relevant for the data transfer
via the interface. The unit on the 4-digit field
display changes automatically based on
the auto range function.

• Depending on operating mode cond. / MΩ

Value range:

µS/cm, mS/cm, S/m
kΩ⋅cm, MΩ⋅cm

µS/cm

or

MΩ⋅cm

Input damping

VH04This function describes the transmitter’s response to the

input signal. The value entered here corresponds to the
number of samples used for averaging.

Value range:

1...10

3

■ Operating level 2

LM431CE5.CHP

mypro CLM 431 / CLD 431 conductive Functional description

Endress+Hauser 27

Function group

MAIN PARAMETERS

Function/display

Matrix

VH

1)

Description

Setting

Default Customer

Set
4 mA value

VH05Entry of conductivity or resistance value for a current

value of 4 mA (see chapter 4.6.3).

Note:

A specific minimum distance from the 20 mA
value must be observed.

Value range:

0 ... 60 mS/cm

0...200MΩ⋅cm

Minimum distance:

Meas. value betw. 0 ... 199,9 µS/cm: 20 µS/cm / 25 kΩ⋅cm
Meas. value betw. 200 ... 1999 µS/cm: 200 µS/cm / 0,25 MΩ⋅cm
Meas. value betw. 2 ... 19,99 mS/cm: 2 mS/cm / 2,5 MΩ⋅cm
Meas. value > 20 mS/cm: 20 mS/cm / 25 MΩ⋅cm

0.0 µS/cm

Set
20 mA value

VH06Entry of conductivity or resistance value for a current

value of 20 mA (see chapter 4.6.3).

Note:

A specific minimum distance from the 4 mA
value must be observed.

Value range:

0 ... 60 mS/cm

0...200MΩ⋅cm

Minimum distance:

Meas. value betw. 0 ... 199,9 µS/cm: 20 µS/cm / 25 kΩ⋅cm
Meas. value betw. 200 ... 1999 µS/cm: 200 µS/cm / 0,25 MΩ⋅cm
Meas. value betw. 2 ... 19,99 mS/cm: 2 mS/cm / 2,5 MΩ⋅cm
Meas. value > 20 mS/cm: 20 mS/cm / 25 MΩ⋅cm

20.00 µS/cm

Operating mode
conductivity /
resistance

VH09Sets the transmitter operating mode to conductivity or

resistance measurement.

Note:

Changing the operating modes resets the
current output values to default.

conductivity

or

resistance

■ Operating level 2

Functions marked this way are not available in the Profibus instrument variant.

Functional description mypro CLM 431 / CLD 431 conductive

28 Endress+Hauser

5.2 Basic functions

Function group

BASIC FUNCTIONS

Function/display

Matrix

VH

1)

Description

Setting

Default Customer

Remote
calibration
control

VH10This function controls the calibration sequence when

operated via the interface (see chapter 4.6.4 ).

Note:

The measuring system can be calibrated in
the field or via the interface (hand-held
HART®terminal or Commuwin II).

–

Temperature
coefficient α

VH11Entry of linear temperature coefficient for the process in

measuring mode.

Value range:

0 ... 10 % /K

2.10 % / K

Temperature
compensation
type

VH12Selection of medium temperature compensation type.

Value range:

nonE

= none

LI N

= linear

nACL

= NaCl

tAb

= α value table

Pur

= pure water NaCl

linear

Reference temp.

VH13Reference temperature for automatic temperature

compensation.

Value range:

–35 ... 250 °C

25 °C

Cell constant

VH15Entry of cell constant or information on cell constant

determined during calibration.

Value range:

0.0025 ... 99.99 cm

–1

1cm

–1

Line resistance

VH16Entry of line resistance for conductivity measuring cell.

Note:

The line resistance does not affect the accuracy
in the case of measured values below 1 mS.
With measured values above 5 mS and line
lengths (CYK 71) exceeding 10 m, the error is
greater than 0.5% of the measuring value
and therefore requires compensation.

Note:

The total line resistance of measuring cable
CYK 71 is 0.17 Ω/m.

Value range:

0.00 ... 50 ohms

0

■ Operating level 2

LM431CE5.CHP

mypro CLM 431 / CLD 431 conductive Functional description

Endress+Hauser 29

Function group

BASIC FUNCTIONS

Function/display

Matrix

VH

1)

Description

Setting

Default Customer

Temperature
compensation
type

VH17Switches the temperature measurement on/off and

toggles between manual and automatic temperature
compensation (MTC/ATC).

Note:

• If set to „off+MTC“, the preset MTC
temperature is used for compensation

• If set to „on+MTC“, the temperature can be
additionally measured via a temperature
sensor and output via the HART®interface
or in the field

• If set to „on+ATC“, the value measured by
the temp. sensor is used for compensation

Value range:

oFF

=off+MTC

oFF.t

= on + MTC

on.T

= on + ATC

on + ATC

MTC temp.

VH18Entry of reference temperature for manual temperature

compensation.

Value range:

–35.0 ... 250.0 °C

25.0 °C

Temperature
offset

VH19Adjustment of temperature measurement by an offset

value. Entry of an offset value or of the offset determined
during calibration (at operating level 1, this value can only
be viewed but not edited).

Note:

Only exists if temperature measurement
has been switched on (see VH 17
„Temperature compensation type“).

Value range:

–20.0 ... 20.0 °C

0.0 °C

■ Operating level 2

Functional description mypro CLM 431 / CLD 431 conductive

30 Endress+Hauser

5.3 Calibration parameters

Function group

CALIBRATION PARAMETERS

Function/display

Matrix

VH

1)

Description

Setting

Default Customer

Entry of
calibration
solution

VH20Conductivity of calibration solution.

Note:

The unit is µS/cm or mS/cm.

Value range:

0.000 µS/cm to 9999 mS/cm

1000 µS/cm

Temperature
coefficient α of
calibr. solution

VH21Temperature coefficient of calibration solution for

calibration with automatic temperature compensation.

Note:

The α value of the solution is temperature­dependent and must be determined for the
current calibration temperature.

Value range:

0.00 ... 10.00 % / K

2.10 % / K

Temperature of
calibr. solution

VH23Temperature calibration: Field for entry of current

calibration temperature. The temperature offset is
automatically computed from this and displayed in field
VH 19 “Temperature offset”.

Note:

• With ATC: Entry of actual temperature

• With MTC: Entry of MTC calibration temp.

Value range:

–35 ... 250 °C

–

Automatic
HOLD during
calibration

VH29Activates or deactivates the automatic HOLD function for

the current output during calibration.

Note:

Hold during calibration is always active for
resistance measurement.

Value range:

Autom. HOLD during calibration off
Autom. HOLD during calibration on

on

■ Operating level 2

Functions marked this way are not available in the Profibus instrument variant.

LM431CE5.CHP

mypro CLM 431 / CLD 431 conductive Functional description

Endress+Hauser 31

5.4

Alpha table

In order to implement a special, medium­specific temperature compensation function,
a table is stored in the MyPro CLM 431 / CLD

431. The α characteristic is entered in a table
which may contain 2 to 10 elements. Each
table element consists of an α value and the
associated temperature.

The α table is activated via the “tab” mode in

matrix position VH 12. However, the activation
should not be performed unless the values
have been edited (VH 60 ff) since changes in

the α table become effective immediately

(resulting in error message 150 in position
VH 62).

Programming sequence for αtable:

1. Enter number of elements (VH 60)

2. Select element 1 (VH 61)

3. Enter temperature value 1 (VH 62)

4. Enter αvalue 1 (VH 63)

5. Repeat steps 2 to 4 for all other
elements of the table

■ Operating level 2

Function group

αTABLE

Function/display

Matrix

VH

1)

Description

Setting

Default Customer

Number of
elements

VH60Entry of number of table elements.

Value range:

2...10

2

Selection of
element

VH61Programming of the selected table element starts with the

selection of the element. This is followed by the entry of
the temperature value and corresponding α value for the
table element.

Value range:

1 ... number of elements

1

Temperature
value

VH62Temperature value of current table element.

Note:

The temperature values must increase from one
element to the next. The required minimum
distance between temperature values is 10 K.
Error message E150 indicates an incorrect
temperature entry.

Value range:

–35 ... 250 °C

0

αvalue

VH63Temperature coefficient of current table element.

Value range:

0.0 ... 10.00 % / K

2.10 % / K

Functional description mypro CLM 431 / CLD 431 conductive

32 Endress+Hauser

5.5 Polarisation detection

Conductive conductivity measuring cells are
characterised by a limited measuring range
which mainly depends on the cell constant.
However, the exact application range limits
of a measuring cell also depend on other
factors, such as, for example, frequency of
measurement, electrode material, coating on
electrode and medium to be measured,

all of which complicate the determination of
the application limit. The MyPro CLM 431 /
CLD 431 transmitter employs a procedure
permitting direct measurement of the polarisa­tion effect. This method evaluates signals and
issues an alarm whenever the cell constant
has changed by more than 5% due to polari­sation effects.

5.6 Diagnosis

Function group

DIAGNOSIS

This function group can be used to define

the error current assignments for each

individual error and to disable (lock) field operation.

Function/display

Matrix

VH

1)

Description

Setting

Default Customer

Selection of
diagnostic code

VH80Selection of a diagnostic (error) code (see chapter 7.2).

Value range:

E 1 ... E 150

1

Error status

VH81Display of status for selected diagnostic code.

Note:

The error status can be evaluated with the
hand-held HART®terminal or with the
Commuwin II user interface.

Value range:

0 = inactive
1 = active

depending on

code

■ Operating level 2

Function group

BASIC MONITORING FUNCTIONS

Function/display

Matrix

VH

1)

Description

Setting

Default Customer

Polarisation
monitoring

VH70Switches the polarisation monitoring function on or off.

Note:

If polarisation monitoring is on and polarisation
is detected, then error message E071
„Polarisation error“ is signalled (does not
appear for MΩ measurement)

Value range:

On
Off

on

LM431CE5.CHP

mypro CLM 431 / CLD 431 conductive Functional description

Endress+Hauser 33

Function group

DIAGNOSIS

This function group can be used to define

the error current assignments for each

individual error and to disable (lock) field operation.

Function/display

Matrix

VH

1)

Description

Setting

Default Customer

Error
assignment

VH82This function is used to define whether or not an error

current of 22 mA is output for the selected error code on
the current output.

Note:

If set to „yes“ (effective), an error current is
output for an error set by the MyPro.
A diagnostic code with the setting „no“
(not effective) has no effect on the current
output.

Value range:

Yes

=1

no

=0

depending on

code

Error current
delay

VH83Sets the delay for a diagnostic code for which the error

current assignment „yes“ (effective) has been set. If such
a diagnostic code is set by the MyPro, this error becomes
effective as an error current after the delay defined here.

Note:

This delay applies to all
diagnostic codes.

Value range:

0 ... 30 s

2s

Unlock/Lock

VH89Unlock/locks field operation (see chapter 4.5).

Note:

Field operation can be locked and unlocked
with the hand-held HART®terminal, with the
Commuwin II user interface or in the field.
Locking via the keypad has precedence over
software locking.

Note:

0097 = instrument unlocked (any other

entry locks the instrument)

9999 = instrument locked in field with key

combination “+” and “F” (unlocking via
the HART®interface or via operating
level 2 is not possible)

Value range:

0000 ... 9998

0097

■ Operating level 2

Functions marked this way are not available in the Profibus instrument variant.

Functional description mypro CLM 431 / CLD 431 conductive

34 Endress+Hauser

5.7 Service and simulation

Function group

SERVICE/SIMULATION

Function/display

Matrix

VH

1)

Description

Setting

Default Customer

Diagnostic code

VH90Displays the active diagnostic codes with the highest

priority levels (see chapters 4.6.2 and 7.2).

Value range:

E1...E150

–

Device address

VH 92 Entry of device address.

Note:

Only available for PROFIBUS-PA.

Value range:

0 ... 126

126

Software version

VH93Displays the software version of the instrument.

depends on

instrument

version

Hardware version

VH94Displays the hardware version of the instrument.

depends on

instrument

version

Factory settings
(set default)

VH95This function is used to selectively reset the data areas of

the instrument to the factory settings.

Value range:

no

= 0 = no reset

InSt

= 1= instrument (data specific to instrument)

SEnS

= 2 = sensor (data specific to sensor)

uSEr

= 3 = user (combination of 1+2)

no

Output current
simulation

VH98This function is used to switch the output current

simulation on or off.

Note:

Reset back to „0“ (simulation off) after
simulation.

Value range:

off

=0=off

on

=1=on

0

Current value

VH99Entry of a current value (independent of the measurement)

to be output at the current output.

Value range:

4.00 ... 22.00 mA

10 mA

■ Operating level 2

Functions marked this way are not available in the Profius variant.

LM431CE5.CHP

mypro CLM 431 / CLD 431 conductive Functional description

Endress+Hauser 35

5.8 User info

Function group

USER INFO

Function/display

Matrix

VH

1)

Description

Setting

Factory Customer

Tag number

VHA0Entry of a measuring point designation (tag number).

Value range:

Any sequence of 8 alphanumeric characters.

Note:

This function is only available for operation via
the Hart interface but not via PROFIBUS.

“”

(8 spaces)

■ Operating level 2

Functional description mypro CLM 431 / CLD 431 conductive

36 Endress+Hauser

6 Interfaces

6.1

HART



6.1.1

HART



with hand-held terminal or HARTCommunicator

In addition to field operation, the MyPro
CLM 431 / CLD 431 transmitter can also be
accessed via the universal hand-held terminal
DXR 275 or a PC with a HARTmodem
(Commubox) using the HARTprotocol to
query or change parameter settings. This
chapter contains essential information on:

• electrical connection

• operation of HART Communicator

• E+H operating matrix for HART



Note:

Refer to the DXR 275 operating
instructions for details on the hand­held HART terminal.

Connection of hand-held terminal DXR 275

There are two alternatives for connecting the
hand-held terminal (see fig. 6.1.):

• Direct connection to the measuring trans­mitter via terminals 1 and 2

• Connection via the 4 ... 20 mA analog
signal line

In both cases, the measuring circuit must
have a resistance of at least 250 Ω between
the power source and the hand-held terminal.
The max. load at the current output depends
on the supply voltage. The measuring trans­mitter input voltage for the maximum current
consumption of 22 mA must be at least
12 V DC.

4...20 mA

Test

1

3

2

+

0000

HARTHandterminal
1 Offline

3 Transfer
4 Frequenzgerät
5Extras

2 Online➔

I

O

HARTHandterminal
1 Offline

3 Transfer
4 Frequenzgerät
5Extras

2 Online➔

I

O

HARTHandterminal
1 Offline

3 Transfer
4 Frequenzgerät
5Extras

2 Online➔

I

O

HARTHandterminal
1 Offline

3 Transfer
4 Frequenzgerät
5Extras

2 Online➔

I

O

any connected device/resistance

Min. 250 Ω

4...20 mA

BE018Y40.CDR

Fig. 6.1

Electrical connection of
hand-held HARTterminal

LM431CE6.CHP

mypro CLM 431 / CLD 431 conductive Interfaces

Endress+Hauser 37

Operation of MyPro CLM 431 / CLD 431 with the HARTCommunicator

Operating the MyPro CLM 431 / CLD 431
measuring system via the hand-held terminal
is quite different from field operation via the
pushbuttons on the keypad. When using the
HARTCommunicator, all MyPro CLM 431
functions are selected at different menu levels
(see figure 6.2) and with the aid of a special
E+H operating menu (see figure 6.3).

Note:

• The MyPro measuring instrument
can only be controlled with a
HARTCommunicator if the prop­er software (DD = device descrip­tion of MyPro CLM 431 / CLD

431) is installed in the Communi­cator. If this is not the case, the
memory module may have to be
replaced, or the software may
have to be adapted. Contact E+H
Service if you have any questions.

• All MyPro functions are described
in detail in chapter 5.

HARTHANDTERMINAL

1 OFFLINE

3 TRANSFER
4 FREQUENCY DEVICE
5 EXTRAS

2 ONLINE➔

I

O

MyProLFC: ABC0001
ONLINE

2 DEVICEDATA
3 HART OUTPUT
4 PV 1000 mS/cm
5 AO 12.00mA

1 MATRIXGROUP SEL.➔

MyProLFC: ABC0001
MATRIXGROUP SEL.

1 MAIN PARAMETER

3 CALIBR. PARAMETER
4 ALPHA TABLE
5 POL. CHECK

2 MAINFUNCTIONS➔

MyProLf: ABC0001
MAINFUNCTION

2 TEMP. COEFFICIENT
3 Tc MEDIUM
4 CELLCONSTANT
5 CABLERESISTANCE

1 CALIBRATION➔

HOME

HOME

Fig. 6.2

Operation of hand-held
HART terminal

Procedure:

1. Switch on the hand-held terminal:
a) Measuring instrument not connected

➜ The HART



main menu appears. This menu

level appears for any HART



programming, i.e.
independent of the instrument type. Refer to the
„Communicator DXR 275“ operating instructions
for further information.

b) Measuring instrument is connected ➜ The program

goes directly to the „Online“ menu level.

The „Online“ menu level is used to display the current data
measured, such as conductivity, temperature, etc., and also
allows you to access the MyPro CLM 431 / CLD 431 operat­ing matrix via the „matrix group selection“ (see figure 6.2). All
function groups and functions accessible through HART are
displayed in this matrix in a systematic arrangement.

2. The function group is selected using „matrix group
selection“ (e.g. basic functions), and then the
desired function, e.g. remote calibration. All
settings or numeric values relating to the function
are immediately displayed.

3. Enter numeric value or change setting as required.

4. Press function key „F2“ to call up „SEND“.
Press the F2 key to transfer all the values entered/
settings changed with the hand-held terminal to the
MyPro CLM 431 / CLD 431 measuring system.

5. Press the HOME function key „F3“ to return to the
„Online“ menu level. Here, you can read the current
values measured by the MyPro CLM 431 / CLD 431
instrument with the new settings.

Interfaces mypro CLM 431 / CLD 431 conductive

38 Endress+Hauser

HART



operating matrix

MAIN
PARAMETERS

Meas. point

(tag number)

Software

version

Error code

No. of elements

Pol. alarm

Element selection

Hardware

version

Current

simulation

Defaults

Output current

T of solution

c

Cond. of solution

Temp. of solution

Auto hold dur. cal.

Cal. (contr. field)

Operating state

Temp. coefficient

Meas. value unit

T of medium

c

Reference temp.

Cell constant

Temperature

Meas. value

Signal damping

Value for

4mA

Value for

20 mA

BASIC
FUNCTIONS

CALIBR.
PARAMETERS

ALPHA
TABLE

POL.
MONITORING

DIAGNOSIS

SERVICE
SIMULATION

USER INFO

Mode: cond./MΩ

Cable resistance

Temp. compens.

MTC temp. entry

Temp. correction

Temperature

value

Alpha value

Error status

Error current

delay

Locking

Note:

These functions only appear if other functions
have been configured accordingly.

In some cases, the MyPro CLM 431 / CLD 431 function designations
for the HART terminal may deviate slightly from the designations

listed in chapter 5.



....................

Error current
assignment

BA018E42.CDR

Fig. 6.3

If the instrument has been

locked in the field, the

parameters cannot be

changed via the

hand-held terminal (see

chapter 4.5)

HART



operating matrix

for MyPro CLM 431 /

CLD 431 (conductive

conductivity

measurement)

LM431CE6.CHP

mypro CLM 431 / CLD 431 conductive Interfaces

Endress+Hauser 39

6.1.2

HART



with Commuwin

Description

The MyPro CLM 431 / CLD 431 measuring
transmitter can also be operated via its
HARTinterface using Commuwin II.
Commuwin II is a graphical control program
for intelligent measuring instruments and can
handle various communication protocols. The
program supports the following functions:

• On-line and off-line measuring transmitter
parameter changes

• Loading and saving of instrument data
(upload/download)

Note:

Refer to the Commuwin II operating
instructions (BA 124F/00/en) for a
detailed description.

A program extension additionally supports
recording of measured values on a line
recorder.

Commuwin offers two alternatives for opera­tion and parameter changes (instrument
data menu):

• Graphical operation

• Matrix operation

4...20 mA

4...20mA

Test

1

3

2

+

0000

MyPro CLM 431 /

CLD 431

any connecteddevice

or resistance

min. 250 Ω

Supply voltage

17,5 ... 30 V DC

Commuwin II

Commubox

FXA 191

BA018Y43.CDR

Fig. 6.4

Electrical connection
of the Commubox

Interfaces mypro CLM 431 / CLD 431 conductive

40 Endress+Hauser

Commuwin II operating matrix

6.2 PROFIBUS-PA

Please refer to separate operating
instructions for instruments equipped
with the PROFIBUS interface.

H0 H1 H2 H3 H4 H5 H6 H7 H8 H9

V0

MAIN
PARAMETERS

Meas. value Temperature

Operating

state

Unit of

meas. value

Signal

damping

Value for

4 mA

Value for

20 mA

Oper. mode

cond./MΩ

V1

BASIC
FUNCTIONS

Calibration

(control field)

Temp.

coefficient

α value

of medium

Reference

temperature

Cell constant

Line

resistance

Temperature

compens.

Entry of

MTC temp.

Temperature

correction

V2

CALIBR.
PARAMETERS

Conductivity

of solution

αvalue

of solution

Temperature

of solution

Autom.
HOLD dur.
calibration

V3

V4

V5

V6

ALPHA
TABLE

Number of

elements

Selection of

elements

Temperature

value

Alpha value

V7

POL.
MONITORING

Pol. alarm

V8

DIAGNOSIS

Selection of

error code

Error

Status

Error

assignment

Error current

delay

Unlock/Lock

V9

SERVICE/
SIMULATION

Error
code

Software

version

Hardware

version

Factory

defaults

Current

output

simulation

Current value

VA

USER
INFO

Meas. point

(tag number)

LM431CE6.CHP

mypro CLM 431 / CLD 431 conductive Interfaces

Endress+Hauser 41

7 Troubleshooting

7.1 Error indication

The MyPro CLM 431 / CLD 431 indicates
errors by means of an alarm symbol flashing
on the display. It also outputs an error current
of 22 mA +/- 0.5 mA at the current output if
configured accordingly (VH 80 – 83).

The error can then be identified in the diag­nostic parameters via the diagnostic code.
Up to five entries are listed according to
priority.

7.2 Diagnostic codes (error codes)

The following table describes the diagnos­tic/error codes of this instrument variant.

The default error current assignment (active
or not active) for each code is also listed.

Failure

no.

Display Measures Error current

assignment

(default)

E1

EEPROM memory error

Switch instrument off and on again,
return instrument to your local Endress+Hauser sales
agency or exchange instrument.

active

E2

Instrument not adjusted, adjustment
data invalid, no user data available or
user data invalid (EEPROM error)

active

E7

Transmitter malfunction

active

E10

No temperature sensor connected or
temperature sensor short-circuited
(temperature sensor faulty)

Check temperature sensor and connections;
if necessary, check instrument and measuring cable with
temperature simulator.

active

E36

Measuring cell calibration range
exceeded

Recalibrate measuring cell; if necessary, check measuring
cell and connections; check instrument and measuring
cable with conductivity simulator.

active

E37

Below measuring cell calibration range

active

E45

Calibration aborted Repeat calibration. active

E46

Current output parameter limits
interchanged

Set value for 20 mA to a value > value for 4 mA. active

E55

Below main parameter measuring
range

Immerse sensor in conductive medium. active

E57

Main parameter measuring range
exceeded

Check measurement, process control and connections; if
necessary, check instrument and measuring cable with
simulator.

active

E59

Below temperature measuring range

active

E61

Temperature measuring range
exceeded

active

E63

Below current output range

Check configuration; if necessary, check instrument and
measuring cable with simulator.

not active

E64

Current output range exceeded Check measured value and current assignment.

not active

E71

Inaccurate measurement/polarisation

Clean measuring cell; check table; select suitable
measuring cell.

active

E77

Temperature outside α value table
range

Check process / table assignment.

not active

Troubleshooting mypro CLM 431 / CLD 431 conductive

42 Endress+Hauser

Failure

no.

Display Measures Error current

assignment

(default)

E80

Current output parameter range too
small

Spread current output. not active

E100

Current simulation active Choose correct current output parameter.

not active

E101

Service function active

Switch off service function or switch instrument off and on
again.

not active

E106

Download active Wait for download to be finished. not active

E116

Download error Repeat download.

active

E150

Distance between temperature values
in α value table too small or not

monotonously increasing

Enter correct values in αvalue table (minimum distance
between temperature values of 10 K required).

not active

LM431CE7.CHP

mypro CLM 431 / CLD 431 conductive Troubleshooting

Endress+Hauser 43

8 Service and maintenance

8.1 Cleaning

We recommend using commercially available
cleaning agents to clean the front of the instru­ment.
The instrument front is resistant to
(DIN 42 115 test method):

• alcohol (short-term)

• diluted acids (max. 2 % HCI)

• diluted lyes (max. 3 % NaOH)

• soap-based household detergents

Note:

Do not use concentrated mineral
acids or lyes, benzyl alcohol,
methylene chloride or high-pressure
steam to clean the front panel.

8.2 Repairs

Repairs may only be carried out by the
manufacturer or through the Endress+Hauser
service organization.
An overview of the Endress+Hauser service
network can be found on the back cover of
these operating instructions.

Service and maintenance mypro CLM 431 / CLD 431 conductive

44 Endress+Hauser

9 Accessories

The following accessories may be ordered
separately:

• Transmitter power supply units

– RN 221 power separator (non-Ex)
– RN 221 Z power separator (Ex)
– NX 9120 power supply (1 channel,

non-Ex)

– NX 9121 power supply unit (3 channels,

Ex)

– 1-channel transmitter power supply

units with galvanically separated power
output

Output voltage: typ. 24 V DC ±1 V
Output current: max. 33 mA

Current limiting: 38 mA ±5 mA

• Hand-held HARTterminal DXR 275

The hand-held terminal communicates with
any HART-compatible unit via the 4 ... 20 mA
line.

Refer to the E+H sales agency in your area
for details and further information on program­ming (see back cover of these operating in­structions for addresses).

• Commuwin II with Commubox

Commuwin II is a graphical, PC based opera­ting program for intelligent measuring instru­ments.

Refer to the E+H-System Information
SI 018F/00/en for further information on
Commuwin II. A gratis update of the commu­win device description is available via internet
http://www.endress.com.

The Commubox serves as the required inter­face between the HARTinterface and the
serial PC interface.

Refer to the E+H sales agency in your area
for further information (see back cover of
these operating instructions for addresses).

• Extension cable CYK 71

Extension cable for conductive measuring
cells for use with junction box VS.
Order no. 50085333

• Junction box VS

Junction box with receptacle and 7-pin
connector for extension of measuring
cable connection between measuring cell
and instrument. Protection type: IP 65
Order no. 50001054

LM431CE9.CHP

mypro CLM 431 / CLD 431 conductive Accessories

Endress+Hauser 45

10 Technical data

MyPro CLM 431 conductive

General specifications

Manufacturer Endress+Hauser
Equipment designation MyPro CLM 431 conductive

Physical data

Dimensions (H × W × D) 227 × 104 × 137 mm
Weight max. 1.25 kg

Protection type IP 65
Housing material GD-AlSi 10 Mg, plastic-coated
Measured value display liquid crystal display

Conductivity/resistance
measurement

Measuring range
with cell constant k = 1

0 ... 600 mS/cm (uncompensated)

0...2MΩ⋅cm (uncompensated)

Conductivity measurement
Min. distance 4 ... 20 mA signal
with cell constant k = 1

meas. value 0 ... 199,9 µS/cm: 20 µS/cm
meas. value 200 ... 1999 µS/cm: 200 µS/cm

meas. value 2,000 ... 19,99 mS/cm: 2,000 mS/cm
meas. value > 20 mS/cm: 20 mS/cm

Resistance measurement
Min. distance 4 ... 20 mA signal
with cell constant k = 0,01

meas. value 0 ... 199,9 kΩ⋅cm: 25 kΩ⋅cm
meas. value 200 ... 1999 kΩ⋅cm: 0,25 MΩ⋅cm
meas. value 2,000 ... 19,99 MΩ⋅cm 2,5 MΩ⋅cm
meas. value > 20 MΩ⋅cm 25 MΩ⋅cm

Measurement deviation

1

(with CLS 12) ±0.5 % of measured value ± 4 digits

Reproducibility

1

(with CLS 12) ±0.1 % of measured value ± 2 digits

Usable cell constant k = 0.0025 ... 99.99 cm

–1

Max. sensor cable length conductivity

resistance

100 m

15 m
Max. resolution (in most sensitive measuring range) 10 nS/cm
Measuring frequency conductivity

resistance

299.75 ... 1077.6 Hz

32.5 ... 425 Hz

Temperature measurement

Temperature sensor connected Pt 100
Measuring range of Pt 100 –35 ... +250 °C

Measurement deviation

1

(entire measuring range) max. 0.5 % of MR
Measured value resolution 0.1 °C
Reproducibility

1

± 0.1 K

Adjustable temperature offset ±20 K

Temperature compensation

Compensation types linear, NaCl, ultrapure water, table
Range –35 ... +250 °C

Reference temperature adjustable; factory setting 25 °C

Signal output

Current range 4 ... 20 mA

Measurement deviation

1

± 22 µA ± 0,5 µA ⋅ I

real

/mA ⋅∆T/K

∆T=T

a

– 25 °C for Ta≥ 25 °C

∆T = 25 °C – T

a

for Ta< 25 °C

Load

max. 820 Ω

Resolution

< 6 µA

1

acc. to DIN IEC 60746 part 1, for nominal operating conditions

Technical data mypro CLM 431 / CLD 431 conductive

46 Endress+Hauser

Electrical data

Supply voltage +12 ... +30 V DC
Power consumption max. 660 mW

Signal output 4 ... 20 mA, potential separated from sensor circuit
Error current signal output 22 mA ± 0.02 mA
HART

®

transfer: load

250 ... 820 Ω

HART

®

transfer: signal output 0.8 ... 1.2 mA (peak to peak)

Terminals, max. cable cross section 2.5 mm², screen 4 mm²

Vibration stability acc. to IEC 770

Mounting position pipeline
Vibration frequency 10 ... 60 Hz

Maximum amplitude 0.21 mm

Ambient conditions

Electromagnetic compatibility (EMC) Interference emission and interference immunity

acc. to EN 61326-1:1998

Ambient temperature T

a

(nominal operating conditions) –15 ... +55 °C
Relative humidity (nominal operating conditions) 10 ... 95 %, non-condensing
Ambient temperature T

a

(limit operating conditions) –20 ... +60 °C (Ex: –20 ... +55 °C)
Storage and transport temperature –20 ... +70 °C

Ex version of instrument

CLM 431-G
Intrinsically safe power supply and signal circuit, protection type EEx ib IIC T4

Max. input voltage

U

i

30 V DC

Max. input current

I

i

100 mA

Max. input power

P

i

750 mW

Max. internal inductance

L

i

200 µH

Max. internal capacitance

C

i

≈ 0, to PE = 5.3 nF

Intrinsically safe sensor circuit, protection type EEx ia IIC T4

Max. output voltage

U

o

± 5.4 ( 10.8) V DC

Max. output current

I

o

320 mA

Max. output power

P

o

200 mW

Max. external inductance

L

o

100 µH

Max. external capacitance

C

o

100 nF

CLM 431-H
Intrinsically safe power supply and signal circuit, protection type EEx ib IIC T4

Max. input voltage

U

i

30 V DC

Max. input current

I

i

100 mA

Max. input power

P

i

750 mW

Max. internal inductance

L

i

200 µH

Max. internal capacitance

C

i

≈ 0, to PE = 5.3 nF

Intrinsically safe sensor circuit, protection type EEx ia IIC T4

Max. output voltage

U

o

± 6.3 (12.6) V DC

Max. output current

I

o

130 mA

Max. output power

P

o

211 mW

Max. external inductance

L

o

100 µH

Max. external capacitance

C

o

100 nF

Supplementary documentation

TI CLS 12 order no. 50059349
TI CLS 13 order no. 50059350

TI CLS 15 order no. 50065950
TI CLS 19 order no. 50065951
TI CLS 21 order no. 50059352

mypro CLM 431 / CLD 431 conductive Technical data

Endress+Hauser 47

MyPro CLD 431 conductive

General specifications

Manufacturer Endress+Hauser
Equipment designation MyPro CLD 431 conductive

Physical data

Length with CLS 12 321 mm
Process connection G1 thread

Weight approx. 2 kg
Protection type IP 65
Housing material GD-AlSi 10 Mg, plastic-coated
Measured value display liquid crystal display

Conductivity/
resistance measurement

Measuring cell CLS 12

Conductivity measuring range version CA

version CB

0.04 ... 20 µS

0.1 ... 200 µS

Resistance measuring range version CA

version CB

0.05 ... 25 MΩ⋅cm

0.005 ... 10 MΩ⋅cm

Cell constant k = 0.01/cm in 0.04 ... 20 µS/cm measuring range

k = 0.1 /cm in 0.1 ... 200 µS/cm measuring range

Other data

Same as CLM 431 conductive

Ex version of instrument

CLD 431-H
Intrinsically safe power supply and signal circuit, protection type EEx ia/ib IIC T4

Max. input voltage

U

i

30 V

Max. input current

I

i

100 mA

Max. input power

P

i

750 mW

Max. internal inductance

L

i

200 µH

Max. internal capacitance

C

i

≈ 0, to PE = 5.3 nF

Supplementary documentation

TI CLS 12 order no. 50059349

Subject to modifications.

LM431CEX.CHP

60

80

100

120

140

16020

40

55

85

0

10

20

30

40

50

55

60

[° C]

[° C]

Ambient temperature

Ex area

Medium temperature

Non-Ex

area

TDIAGR.CDR

Fig. 10.1

Permissible temperature
ranges of MyPro CLD 431

Technical data mypro CLM 431 / CLD 431 conductive

48 Endress+Hauser

11 Index

A

atable ............................. 32

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . 45

Adjustment ranges. . . . . . . . . . . . . . . . . . . . 24

Alpha table. . . . . . . . . . . . . . . . . . . . . . . . . . 32

Angle bracket. . . . . . . . . . . . . . . . . . . . . . . . 11

B

Basic functions. . . . . . . . . . . . . . . . . . . . . . . 29

C

Ckey .............................. 21

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Calibration menu . . . . . . . . . . . . . . . . . . . . . 25

Calibration parameters . . . . . . . . . . . . . . . . 31

Calibration solution . . . . . . . . . . . . . . . . . . . 20

Cell constant . . . . . . . . . . . . . . . . . . 24-25, 46

Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Commubox. . . . . . . . . . . . . . . . . . . . . . . . . . 45

Commuwin . . . . . . . . . . . . . . . . . . . . . . . 40, 45

Commuwin operating matrix . . . . . . . . . . . . 41

Conductivity measuring cells. . . . . . . . . . . . 14

Conformity certificate. . . . . . . . . . . . . . . . . . . 6

Connection of CLS 12 . . . . . . . . . . . . . . . . . 15

Connection of CLS 19 . . . . . . . . . . . . . . . . . 15

Connection of conductivity measuring cells 14

Connection of MyPro in Ex area . . . . . . . . . 19

D

Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Default values . . . . . . . . . . . . . . . . . 28-36, 42

Delivery, items included in. . . . . . . . . . . . . . . 2

Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Diagnostic code. . . . . . . . . . . . . . . . . . . 24, 42

Diagnostic parameter . . . . . . . . . . . . . . . . . 24

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Display . . . . . . . . . . . . . . . . . . . . . . . . . . 13, 22

Display mode. . . . . . . . . . . . . . . . . . . . . . . . 23

Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

E

Electrical connection . . . . . . . . . . . . . . . . . . 17

Electrical data . . . . . . . . . . . . . . . . . . . . . . . 47

Electromagnetic compatibility . . . . . . . . . . . 47

Error code . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Error current . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Error current assignment . . . . . . . . . . . . . . . 42

Error indication. . . . . . . . . . . . . . . . . . . . . . . 42

Error messages . . . . . . . . . . . . . . . . . . . . . . 24

Exareas............................ 19

Ex instrument version. . . . . . . . . . . . . . . 47-48

Examples for connection . . . . . . . . . . . . . . . 15

Extension cable CYK 71 . . . . . . . . . . . . 14, 45

F

Fkey............................ 21,26

Factorysettings...................... 20

Flange mounting . . . . . . . . . . . . . . . . . . . . . 11

Functional description . . . . . . . . . . . . . . 27-36

Functions........................... 21

G

General information . . . . . . . . . . . . . . . . . . 2-4

Generalsafetynotes....................5

Ground terminal . . . . . . . . . . . . . . . . . . . . . . 17

Grounding. . . . . . . . . . . . . . . . . . . . . . . . . . . 17

H

Hand-held HART terminal. . . . . . . . . 37-38, 45

HART Communicator . . . . . . . . . . . . . . . . . . 38

HART interface . . . . . . . . . . . . . . . . . . . . . . . 37

HART operating matrix . . . . . . . . . . . . . . . . . 39

Hazardous areas . . . . . . . . . . . . . . . . . . . . . . 6

Hazards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

I

Immunity to interference. . . . . . . . . . . . . . 6, 17

Inquiries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Installation....................... 5,7-19

Instructions for measuring cable connection 16

Instrument orientation . . . . . . . . . . . . . . . . . . 13

Intendeduse..........................5

Interfaces ..................... 21,37-41

Intrinsically safe power supply. . . . . 19, 47-48

Intrinsically safe sensor circuit . . . . . . . . . . . 19

J

JunctionboxVS ...................14,45

K

Keyactuation ........................21

Keyfunctions ........................21

Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . 13, 21

Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

L

Lockingconcept......................22

M

Main parameters. . . . . . . . . . . . . . . . . . . . . . 27

Maintenance.........................44

Measuring cable connection . . . . . . . . . . . . 14

Measuring cable CYK 71 . . . . . . . . . . . . . . . 14

Measuringcell........................14

Measuringrange......................46

Measuring system. . . . . . . . . . . . . . . . . . . . . . 7

Monitoringfeatures.....................6

Mounting............................10

Mounting bracket . . . . . . . . . . . . . . . . . . 10-11

N

Nameplate. . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

O

Operatingconcept....................21

Operatingelements ...................21

Operatinglevel1...................21,23

Operatinglevel2...................21,26

Operatingoptions.....................21

Operation ...................... 5,20-26

mypro CLM 431 / CLD 431 conductive Index

E+H Conducta 49

INDEX-E.CHP

P

Packaging. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Parameter settings . . . . . . . . . . . . . . . . . . . . 24

Physical data . . . . . . . . . . . . . . . . . . . . . . . . 46

Pipe mounting, DN 30 ... 200 . . . . . . . . . . . . 10

Pipe mounting, DN 60. . . . . . . . . . . . . . . . . . 10

Polarisation detection . . . . . . . . . . . . . . . . . . 33

Polarisation effects . . . . . . . . . . . . . . . . . . . . 33

Post mounting. . . . . . . . . . . . . . . . . . . . . . . . 17

Power supply . . . . . . . . . . . . . . . . . . . . . . . . 17

Power-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Product structure . . . . . . . . . . . . . . . . . . . . . . 3

PROFIBUS interface . . . . . . . . . . . . . . . . . . . 41

Protection type, Ex . . . . . . . . . . . . . . . . . 47-48

Q

Questions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

R

Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . 5, 44

Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . 18

S

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Safety features . . . . . . . . . . . . . . . . . . . . . . . . 6

Secondary parameter. . . . . . . . . . . . . . . . . . 23

Secondary parameter menu. . . . . . . . . . . . . 23

Service . . . . . . . . . . . . . . . . . . . . . . . . . . 35, 44

Signal output . . . . . . . . . . . . . . . . . . . . . . . . 46

Simulation . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Start-up .......................... 5,20

Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

T

Technicaldata.....................46-48

Temperature coefficient. . . . . . . . . . . . . . 24-25

Temperature compensation . . . . . . . . . 25, 46

Temperature measurement. . . . . . . . . . . . . 46

Temperature sensor . . . . . . . . . . . . . . . . 7, 46

Terminal block . . . . . . . . . . . . . . . . . . . . . . . 16

Terminals . . . . . . . . . . . . . . . . . . . . . . . . . 16-17

Transmitter power supply units . . . . . . . . . . 45

Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Troubleshooting. . . . . . . . . . . . . . . . . 5, 42-43

Two-wire line . . . . . . . . . . . . . . . . . . . . . . . . 17

U

Uncompensated conductivity . . . . . . . . . . . 25

Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Use................................. 5

Userinfo............................ 36

W

Wallmounting ....................... 11

Write protection . . . . . . . . . . . . . . . . . . . . . . 22

Index mypro CLM 431 / CLD 431 conductive

50 E+H Conducta

Europe

Austria

❑ Endress+Hauser Ges.m.b.H.
Wien
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I+G Electrical Services Co.Ltd.
Nicosia
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Meris d.o.o.
Beograd
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Egypt

Anasia
Heliopolis/Cairo
Tel. ++20 (2) 417900, Fax [phone]

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Oussama S.A.
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Colsein Ltd.
Bogota D.C.
Tel.++57 (1) 2367659, Fax [phone]

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EURO-TEC S.A.
San Jose
Tel.++506(2) 961542, Fax ( 2) 961542

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Insetec Cia. Ltda.
Quito
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Karachi
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Papua New Guinea

SBS Electrical Pty Limited
Port Moresby
Tel.++675 (3) 251188, Fax [phone]

Philippines

Brenton Industries Inc.
Makati Metro Manila
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Taiwan

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Thailand

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Bangkok
Tel.[phone],Fax [phone]

Vietnam

Tan Viet Bao Co. Ltd.
Ho Chi Minh City
Tel.++84 (8) 8335225, Fax [phone]

Iran

Telephone TechnicalServicesCo.Ltd.
Tehran
Tel.++98 (21) 8746750, Fax [phone]

Israel

Instrumetrics Industrial ControlLtd.
Tel-Aviv
Tel.++972 (3) 6480205, Fax [phone]

Jordan

A.P. Parpas Engineering S.A.
Amman
Tel.++962 (6) 4643246, Fax [phone]

Kingdom of Saudi Arabia

Anasia
Jeddah
Tel.++966 (2) 6710014, Fax [phone]

Kuwait

Kuwait Maritime & Mercantile Co.K.S.C.
Safat
Tel.++965(2) 441481, Fax [phone]

Lebanon

Nabil Ibrahim
Jbeil
Tel.++961 (3) 254052, Fax [phone]

Sultanate of Oman

Mustafa& Jawad Science & Industry Co.
L.L.C.
Ruwi
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United Arab Emirates

Descon Trading EST.
Dubai
Tel.++971 (4) 653651, Fax [phone]

Yemen

Yemen Company for Ghee and Soap Industry
Taiz
Tel.++976 (4) 230664, Fax [phone]

Australia + New Zealand

Australia

ALSTOM Australia Ltd.
Sydney
Tel.++61 (2) 97224777, Fax [phone]

New Zealand

EMC Industrial Instrumentation
Auckland
Tel.++64 (9) 4155110, Fax [phone]

All other countries

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Germany
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