Burkert 8225 Bedienungsanleitung

E-1- Ref. 425552

CONDUCTIVITY 8225

Fluid Control Systems

TABLE OF CONTENTS

1INTRODUCTION ............................................................................................... E-2

1.1 Unpacking and Control ...................................................................................... E-2

1.2 About this Manual .............................................................................................. E-2

1.3 User's Responsibility for Safety ........................................................................ E-2

1.4 Electromagnetic compatibility ............................................................................ E-2

2SPECIFICATION ............................................................................................... E-3

2.1 Type Specification ............................................................................................. E-3

2.2 Design and Measuring Principle ....................................................................... E-5

2.3 Dimensions ........................................................................................................ E-6

2.4 Technical Data ................................................................................................... E-7

2.5 Measuring range electrodes .............................................................................. E-8

3INSTALLATION ................................................................................................ E-9

3.1 Installation Guidelines ....................................................................................... E-9

3.2 Installation.......................................................................................................... E-9

3.3 General Electrical Connection......................................................................... E-10

3.4 Electrical Wiring ............................................................................................... E-10

3.4.1 8225 without relays ................................................................................ E-10

3.4.2 8225 with Relays .................................................................................... E-12

3.4.2 8225 with 230/115 VAC Power Supply .................................................. E-13

4OPERATING ................................................................................................... E-14

4.1 Operating and Control Elements ..................................................................... E-14

4.2 Operation Mode Display .................................................................................. E-15

4.3 Calibration Mode Display ................................................................................ E-16

4.3.1 Languages .............................................................................................. E-16

4.3.2 Engineering Units ................................................................................... E-17

4.3.3 Cell Constant .......................................................................................... E-17

4.3.4 Temperature Compensation Coefficient ................................................ E-17

4.3.5 Output Current ........................................................................................ E-19

4.3.6 Relay....................................................................................................... E-19

4.3.7 Filter Function ......................................................................................... E-21

4.4 Test Menu ........................................................................................................ E-21

4.4.1 Offset-Compensation ............................................................................. E-21

4.4.2 Span-Compensation............................................................................... E-22

4.4.3 Display of non-compensated Conductivity............................................. E-22

4.4.4 Conductivity Simulation .......................................................................... E-22

5 MAINTENANCE .............................................................................................. E-23

5.1 Storing and Cleaning of the Electrode ............................................................ E-23

5.2 Trouble-shooting Guide ................................................................................... E-23

5.3 Factory Settings of the 8225 ........................................................................... E-23

5.4 Spare Parts List ............................................................................................... E-24

APPENDIX ........................................................................................................ G-1

Examples of connections for transmitter 8225.................................................. G-1

E-2-

CONDUCTIVITY 8225

Fluid Control Systems

1 INTRODUCTION

Dear Customer,

Congratulations on your purchase of our

8225 digital conductivity transmitter.

BEFORE INSTALLING OR USING THIS

PRODUCT, PLEASE TAKE OUR ADVICE

AND READ THE ENTIRE MANUAL

THOROUGHLY.

This will enable you to benefit fully from all

of the advantages which the product can

offer.

1.1 Unpacking and Control

Please verify that the product is complete

andfreefromanydamage andthat youhave

recieved the following as a standard

delivery:

-18225Digital ConductivityTransmitter

-1 Operating Instruction Manual

To ensure that you have recieved the

product required, please compare the Type

specification(Bürkertidentification number)

on the label to the lists on the following

pages. If there are any problems such as

loss or damage, please contact your local

Bürkert subsidiary.

1.2 About this Manual

This manual does not contain any form of

warranty or statement and full referal to our

general terms of sale and delivery should

be noted.

This product should only be installed and/or

repaired by correctly trained staff. If any

difficultiesmayoccur withthe productduring

installation,pleasedo nothesitate tocontact

your nearest Bürkert sales office for

assistance.

1.3 User's Responsibility for Safety

Bürkert manufactures a broad range of

conductivity transmitters designed to

operate in a wide variety of applications. It

is the customer's responsibility to select an

appropriate transmitter for the application,

ensure the unit is installed correctly, and

maintain all components. Special attention

must be made to the chemical resistance of

the transmitter and the fluids/medium which

maybe in direct contact with the product.

Ifthissymbol appears,it indicates

that special attention should be

made to the instructions, as they

may affect the safe installation, function or/

and use of the product.

1.4 Electromagnetic compatibility

This device conforms to the EMC-Directive

of the European Union 89/336/EEC.

In order to comply with the above directive,

the wiring instructions must be followed as

instructed.

E-3-

CONDUCTIVITY 8225

Fluid Control Systems

2 SPECIFICATION

2.1 Type Specification

2.1.2 Transmitter 8225 with 12-30 VDC power supply

Conductivity transmitter Gasket Sensor Cable entry Ident N°

STANDARD TYPES WORLWIDE

8225 with 4-20 mA FPM K=0,01 DIN 43650 PG9 418950

8225 with 4-20 mA FPM K=0,1 DIN 43650 PG9 418951

8225 with 4-20 mA FPM K=1,0 DIN 43650 PG9 418952

8225 with 4-20 mA FPM K=10 DIN 43650 PG9 418953

8225 with 4-20 mA, 2 Relays FPM K=0,01 2xPG 13,5 418954

8225 with 4-20 mA, 2 Relays FPM K=0,1 2xPG 13,5 418955

8225 with 4-20 mA, 2 Relays FPM K=1,0 2xPG 13,5 418956

8225 with 4-20 mA, 2 Relays FPM K=10 2xPG 13,5 418957

STANDARD TYPES WORLWIDE WITHOUT RELAYS

8225 with 4-20 mA EPDM K=0,01 DIN 43650 PG9 418958

8225 with 4-20 mA EPDM K=0,1 DIN 43650 PG9 418959

8225 with 4-20 mA EPDM K=1,0 DIN 43650 PG9 418960

8225 with 4-20 mA EPDM K=10 DIN 43650 PG9 418961

8225 with 4-20 mA FPM K=0,01 PG 13,5 418962

8225 with 4-20 mA FPM K=0,1 PG 13,5 418963

8225 with 4-20 mA FPM K=1,0 PG 13,5 418964

8225 with 4-20 mA FPM K=10 PG 13,5 418965

8225 with 4-20 mA EPDM K=0,01 PG 13,5 418966

8225 with 4-20 mA EPDM K=0,1 PG 13,5 418967

8225 with 4-20 mA EPDM K=1,0 PG 13,5 418968

8225 with 4-20 mA EPDM K=10 PG 13,5 418969

STANDARD TYPES WORLWIDE WITH RELAYS

8225 with 4-20 mA, 2 Relays EPDM K=0,01 2xPG 13,5 418970

8225 with 4-20 mA, 2 Relays EPDM K=0,1 2xPG 13,5 418971

8225 with 4-20 mA, 2 Relays EPDM K=1,0 2xPG 13,5 418972

8225 with 4-20 mA, 2 Relays EPDM K=10 2xPG 13,5 418973

STANDARD TYPES NORTH AMERICA

8225 with 4-20 mA FPM K=0,01 DIN 43650 G 1/2" 418974

8225 with 4-20 mA FPM K=0,1 DIN 43650 G 1/2" 418975

8225 with 4-20 mA FPM K=1,0 DIN 43650 G 1/2" 418976

8225 with 4-20 mA FPM K=10 DIN 43650 G 1/2" 418977

8225 with 4-20 mA, 2 Relays FPM K=0,01 2xG 1/2" 418978

8225 with 4-20 mA, 2 Relays FPM K=0,1 2xG 1/2" 418979

8225 with 4-20 mA, 2 Relays FPM K=1,0 2xG 1/2" 418980

8225 with 4-20 mA, 2 Relays FPM K=10 2xG 1/2" 418981

STANDARD TYPES NORTH AMERICA WITHOUT RELAYS

8225 with 4-20 mA EPDM K=0,01 DIN 43650 G 1/2" 418982

8225 with 4-20 mA EPDM K=0,1 DIN 43650 G 1/2" 418983

8225 with 4-20 mA EPDM K=1,0 DIN 43650 G 1/2" 418984

8225 with 4-20 mA EPDM K=10 DIN 43650 G 1/2" 418985

STANDARD TYPES NORTH AMERICA WITH RELAYS

8225 with 4-20 mA, 2 Relays EPDM K=0,01 2xG 1/2" 418986

8225 with 4-20 mA, 2 Relays EPDM K=0,1 2xG 1/2" 418987

8225 with 4-20 mA, 2 Relays EPDM K=1,0 2xG 1/2" 418988

8225 with 4-20 mA, 2 Relays EPDM K=10 2xG 1/2" 418989

E-4-

CONDUCTIVITY 8225

Fluid Control Systems

Conductivity transwithter Gasket Sensor Cable entry Ident N°

STANDARD TYPES WORLWIDE

8225 with 4-20 mA FPM K=0,01 2XPG 13,5 426935

8225 with 4-20 mA FPM K=0,1 2XPG 13,5 426936

8225 with 4-20 mA FPM K=1,0 2XPG 13,5 426937

8225 with 4-20 mA FPM K=10 2XPG 13,5 426938

8225 with 4-20 mA EPDM K=0,01 2XPG 13,5 426939

8225 with 4-20 mA EPDM K=0,1 2XPG 13,5 426940

8225 with 4-20 mA EPDM K=1,0 2XPG 13,5 426941

8225 with 4-20 mA EPDM K=10 2XPG 13,5 426942

STANDARD TYPES WORLWIDE WITH RELAYS

8225 with 4-20 mA, 2 Relays FPM K=0,01 2xPG 13,5 426943

8225 with 4-20 mA, 2 Relays FPM K=0,1 2xPG 13,5 426944

8225 with 4-20 mA, 2 Relays FPM K=1,0 2xPG 13,5 426945

8225 with 4-20 mA, 2 Relays FPM K=10 2xPG 13,5 426946

8225 with 4-20 mA, 2 Relays EPDM K=0,01 2xPG 13,5 426947

8225 with 4-20 mA, 2 Relays EPDM K=0,1 2xPG 13,5 426948

8225 with 4-20 mA, 2 Relays EPDM K=1,0 2xPG 13,5 426949

8225 with 4-20 mA, 2 Relays EPDM K=10 2xPG 13,5 426950

STANDARD TYPES NORTH AMERICA

8225 with 4-20 mA FPM K=0,01 2xG 1/2" 426951

8225 with 4-20 mA FPM K=0,1 2xG 1/2" 427864

8225 with 4-20 mA FPM K=1,0 2xG 1/2" 427865

8225 with 4-20 mA FPM K=10 2xG 1/2" 427866

8225 with 4-20 mA EPDM K=0,01 2xG 1/2" 427867

8225 with 4-20 mA EPDM K=0,1 2xG 1/2" 427868

8225 with 4-20 mA EPDM K=1,0 2xG 1/2" 427869

8225 with 4-20 mA EPDM K=10 2xG 1/2" 427870

STANDARD TYPES NORTH AMERICA WITH RELAYS

8225 with 4-20 mA, 2 Relays FPM K=0,01 2xG 1/2" 427871

8225 with 4-20 mA, 2 Relays FPM K=0,1 2xG 1/2" 427872

8225 with 4-20 mA, 2 Relays FPM K=1,0 2xG 1/2" 427983

8225 with 4-20 mA, 2 Relays FPM K=10 2xG 1/2" 427984

8225 with 4-20 mA, 2 Relays EPDM K=0,01 2xG 1/2" 427985

8225 with 4-20 mA, 2 Relays EPDM K=0,1 2xG 1/2" 427986

8225 with 4-20 mA, 2 Relays EPDM K=1,0 2xG 1/2" 427987

8225 with 4-20 mA, 2 Relays EPDM K=10 2xG 1/2" 427988

2 SPECIFICATION

2.1.2 Transmitter 8225 with 115/230 VAC power supply

E-5-

CONDUCTIVITY 8225

Fluid Control Systems

2 SPECIFICATION

Measuring Principle

Conductivity is defined as the ability of a

solution to conduct electrical current. The

load carriers are ions (e.g. dissolved salts

or acids). In order to measure the

conductivity, 2 electrodes are used which

are set at a fixed distance apart and with a

known specified surface. An AC voltage

source is connected to the electrodes. The

measured current is a direct function of the

conductivity of the solution.

Thetransducerwithout relaysfunctionshas

a 2-wire circuit and requires a power supply

of 12-30 VDC. The device is available with

anintegratedpower supply of 115/230 VAC.

A standard output signal of 4-20 mA is

available, although it is proportional to the

conductivity.

The transducer with 2 additional relays has

a 3-wire circuit. Limit values are freely

adjustable.

2.2 Design and Measuring Principle

Design

The compact conductivity transmitter

combines a sensor and a transducer with

display in a splash-proof plastic IP65

enclosure.

The sensor component consists of easily

replaceable sensors. Sensors with cell

constants of 0.01 and 0.1 are fitted with

stainless steel electrodes, and those with a

higher cell constant 1.0 and 10 are fitted

with graphite electrodes. The Pt1000 for

automatic temperature compensation is a

standard feature in all sensor housings.

The transducer component converts the

measured signal and displays the actual

value.

The output signal is provided within a 4-

pole plug according to DIN 43 650 or via

one PG 13.5 (version without relays) or via

2 PG 13.5 (version with relays).

E-6-

CONDUCTIVITY 8225

Fluid Control Systems

2.3 Dimensions

2 SPECIFICATION

1/2" G

Version:

"WORLDWIDE"

See part 2.1

1/2" G

Version:

"NORTH AMERICA"

See part 2.1

E-7-

CONDUCTIVITY 8225

Fluid Control Systems

2 SPECIFICATION

2.4 Technical Data

Pressure class PN 6

Fluid temperature 0 to 100 °C (32 to 212 °F) (*)

Ambient temperature 0 to 60 °C (32 to 140 °F)

Storing temperature 0 to 60 °C (32 to 140 °F)

Relative humidity max. 80 %

Enclosure IP 65

Measuring range 0,05 µS/cm...200 mS/cm, depending on cell constant

Measuring error typical: 3 % of measured value

max.: 5 % of measured value

Temperature compensation automatic with standardized integrated Pt1000 with

reference temperature of 25 °C (77 °F)

Supply Voltage 12-30 VDC or 115/230 VAC

Output signal 4-20 mA

Load max. 700 Ohm at 30 V

max. 400 Ohm at 24 V

max. 100 Ohm at 15 V

Display 15 x 60 mm LCD 8 digits, alphanumeric,

15 segments, 9 mm high

Relay output (optional) 2 relays, 3 A, 230 V, freely adjustable

Sensor housing PVDF

O-rings FPM/EPDM

Electronic housing PC

Front plate polyester

Measuring electrodes K=0.01 stainless steel electrodes

K=0.1 stainless steel electrodes

K=1.0 graphite electrodes

K=10 graphite electrodes

(*) Refer to fittings instruction manual.

E-8-

CONDUCTIVITY 8225

Fluid Control Systems

2 SPECIFICATION

2.5 Measuring range of electrodes

K = 0.1 und K = 0.01 K = 10K = 1.0

The conductivity transmitter can be fitted

with4differentelectrodeswith cell constants

0.01; 0.1; 1.0 and 10. The electrode is

selected according to the measuring range

and medium by using the table below.

µS/cm mS/cm

0.02 0.05

0.1

0.2 0.5

20 50

100

200 50025

20 50

100

200 500

K=0.01

K=0.1

K=1.0

K=10

MΩ.cm KΩ.cm

50 20

0.5 0.2

0.1

0.05 0.02

0.01

0.0020.005

0.5 0.2

0.1

0.05 0.02

0.01

0.0020.005

pure water industrial water concentrated solutions

Fig. 2.1 Measuring ranges of electrodes

sewage

water

ultra-

pure

water

E-9-

CONDUCTIVITY 8225

Fluid Control Systems

-50 -30 -10 +10 +30 +50 +70 +90 +110 +130

PVC + PP

PVDF

PVDF (PN 6)

PVC (PN 6)

PP (PN 6)

3 INSTALLATION

3.1 Installation Guidelines

Pressure-Temperature Diagram

Please be aware of the pressure-

temperature dependence according to the

respective fitting material.

Installation Guidelines

The conductivity transmitter must be

installed in a vertical position onto a

horizontal pipe or a weld-in fitting must be

usedthroughatankwalltoobtainthevertical

position.

With a cell constant K=10, the opening hole

of the small channel must be located on the

flow side.

The device must be protected against

constant heat radiation and other

environmentalinfluences,suchas magnetic

fields or direct exposure to sunlight.

Do not mount the device behind turbulence

generating fittings such as elbows, valves,

T-pieces, etc..

Caution: only tighten the plastic nut by hand

3.2 Installation

The conductivity transmitter 8225 can be

easilyinstalled into pipes using ourspecially

designed fitting system. (S020/1500)

1.The fitting must be installed into the

pipe according to the installation

specifications in section 3.1.

2.Insert the plastic nut onto the fitting

and let the plastic ring snap into the

guide bush .

3.Carefully insert the transmitter 8225 

into the fitting. If installed correctly, the

transmitter cannot be rotated.

4.Tighten transmitter housing to the fitting

with the plastic nut .

Application range

Fig. 3.1 Installation on a fitting S020

E-10-

CONDUCTIVITY 8225

Fluid Control Systems

3 INSTALLATION

3.3 General Electrical Connection

The connecting cable conducts the

measuring signal and power supply and

must not be installed in combination with

high voltage or high frequency lines. If a

combined installation cannot be avoided,

either keep a min. space of 30 cm (approx.

1 ft) or use coax cables. When using coax

cables observe faultless grounding of the

shield. For normal operating conditions, the

measuring signal can be transmitted by a

simple cable of 0.75 mm2 cross section.

If in doubt, always use a coax cable.

The power supply must be of good quality

(filtered and regulated).

Anearthingpoint is providedviaan earth

lug on the side of the enclosure (see fig.

3.1). For EMC purposes, this point must

be connected locally to a good earth.

3.4 Electrical Wiring 12-30 VDC

3.4.1 8225 without relays

Electrical wiring either via cable plug to DIN

43 650 or PG 13.5 cable gland.

Wiring via cable plug

Standard DIN 43 650 plug connector with

PG9-cable glands, cross section max. 1.5

mm2, IP65 rating (cf. fig. 3.2).

1.To open the connector remove the screw

(cf. fig. 3.2).

2.Remove internal part from external

part .

3.Connect according to the pin assignment

in fig. 3.3.

4.When re-assembling, the internal part

may be inserted into the plastic case in

90 °-step intervals as required.

Fig. 3.2 Plug assembly DIN43650 Fig. 3.3 Connection with cable plug

댷

훰훫훫

훫훫훱

L+(12-30 VDC)

L-(GND)

Not

assigned

Not assigned

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