Eutech instruments ALPHA CON 2000 User Manual

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Instruction Manual

αlpha CON 2000

Conductivity/ Total Dissolved Solids

Controller / Transmitter

Technolo

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68X216843 Rev 1 01/04

Preface

This manual serves to explain the use of the αlpha CON 2000 Series. The manual functions in two ways, firstly as a step by step guide to help the user operate the instrument, and secondly as a handy reference guide. This instruction manual is written to cover as many anticipated applications of the αlpha CON 2000 as possible. If you have any doubts concerning the use of the instrument, please do not hesitate to contact the nearest Eutech Instruments Authorised Distributor.

The information presented in this manual is subject to change without notice as improvements are made, and does not represent any commitment whatsoever on the part of Eutech Instruments.

Eutech Instruments will not accept any responsibility for damage or malfunction of the unit due to improper use of the instrument.

Safety Information

This Eutech Instruments Controller/ Transmitter shall be installed and operated only in the manner specified in the Instruction manual. Only skilled, trained or authorised person should carry out installation, setup and operation of the instrument.

Before powering up the unit, make sure that power source it is connected to, is as specified in the top label. Failure to do so may result in a permanent damage to the unit.

The unit has live and exposed parts inside. If it has to be opened, make sure that the power to the unit is off and disconnected.

The unit is Fuse protected. In the event the fuse has to be replaced, use only those as specified in the manual.

The degree of protection against electric shock will be achieved only by observance of the corresponding installation rules.

TABLE OF CONTENTS

1 INTRODUCTION....................................................................................................................................... 1

1.1 AT THE VERY BEGINNING...................................................................................................................... 1

1.2 INTENDED USE ......................................................................................................................................1

1.3 SAFETY INTSRUCTIONS ......................................................................................................................... 2

1.4 PUTTING OUT OF SERVICE / CORRECT DISPOSAL OF THE UNIT............................................................... 2

2 PRODUCT DESCRIPTION....................................................................................................................... 3

2.1 DESCRIPTION OF UNIT........................................................................................................................... 3

2.2 MEASUREMENT AND CONTROL SYSTEM................................................................................................ 4

2.3 UNIT OVERVIEW ................................................................................................................................... 5

2.3.1 Display Overview............................................................................................................................ 6

2.3.2 Key functions................................................................................................................................... 6

2.3.3 LED indicators................................................................................................................................ 7

2.3.4 Security codes.................................................................................................................................. 7

2.3.5 Menu overview................................................................................................................................ 8

3 ASSEMBLY AND INSTALLATION........................................................................................................ 9

3.1 MOUNTING THE UNIT ............................................................................................................................ 9

3.2 CONNECTION DIAGRAM...................................................................................................................... 11

4 NORMAL OPERATION.......................................................................................................................... 15

4.1 MEASUREMENT MODE........................................................................................................................ 15

5 CALIBRATION MODE........................................................................................................................... 16

5.1 ENTERING CALIBRATION MODE .......................................................................................................... 16

5.2 CALIBRATION ..................................................................................................................................... 17

5.3 VIEW ACTUAL CELL CONSTANT AND CALIBRATION FACTOR............................................................... 18

6 SETUP MODE........................................................................................................................................... 19

6.1 ENTER SETUP MODE............................................................................................................................ 19

6.2 TEMPERATURE COMPENSATION (TC) SUB-FUNCTION ......................................................................... 20

6.3 SETTING TEMPERATURE (SET °C°F) SUB-FUNCTION ...........................................................................21

6.4 CONTROL RELAY A / RELAY B (SP1/SP2) SUB-FUNCTION ................................................................. 22

6.5 CONTROLLER (CNTR) SUB-FUNCTION ............................................................................................... 24

6.6 CURRENT OUTPUT 1 SUB-FUNCTION ................................................................................................... 27

6.7 CURRENT OUTPUT 2 SUB-FUNCTION ................................................................................................... 28

6.8 WASH RELAY (WASH) SUB-FUNCTION .............................................................................................. 29

6.9 MEASURING RANGE SELECTION (RANG) SUB-FUNCTION ................................................................... 30

6.10 CONFIGURATION (CNFG) SUB-FUNCTION .......................................................................................... 31

6.11 CALIBRATION (CAL) SUB-FUNCTION.................................................................................................. 32

7 RELAY MODES ....................................................................................................................................... 33

7.1 VIEW RELAY SET POINTS..................................................................................................................... 33

7.2 MANUAL RELAY MODE .......................................................................................................................34

8 TECHNICAL SPECIFICATIONS.......................................................................................................... 35

8.1 GENERAL SPECIFICATIONS.................................................................................................................. 35

8.2 SPECIFICATIONS FOR WALL MOUNT VERSION...................................................................................... 36

8.3 SPECIFICATIONS FOR PANEL MOUNT VERSION..................................................................................... 37

9 ACCESSORIES......................................................................................................................................... 38

9.1 REPLACEMENT UNIT........................................................................................................................... 38

9.2 ASSEMBLY ACCESSORIES ................................................................................................................... 38

10 GENERAL INFORMATION................................................................................................................... 39

10.1 WARRANTY........................................................................................................................................ 39

10.2 PACKAGING / SCOPE OF DELIVERY...................................................................................................... 39

10.3 RETURN OF GOODS.............................................................................................................................. 39

10.4 GUIDELINES FOR RETURNING UNIT FOR REPAIR .................................................................................. 39

10.5 MAINTENANCE AND CLEANING.......................................................................................................... 40

11 APPENDICES ........................................................................................................................................... 41

11.1 APPENDIX 1 – UNIT FUSE AND JUMPER SETTINGS................................................................................ 41

11.2 APPENDIX 2 – CONDUCTIVITY OF VARIOUS AQUEOUS SOLUTIONS AT 25 °C / 77 °F............................ 43

11.3 APPENDIX 3 – SIMPLE EXPLANATION ON THE FUNCTION OF HYSTERESIS ............................................ 44

11.4 APPENDIX 4 – GENERAL INSTRUCTIONS CONCERNING CONTROLLER SETTING ................................... 45

11.4.1 Control characteristic of Controllers used as limit value switch ............................................. 45

11.4.2 Control characteristic of P-Controllers as proportional controller......................................... 45

11.4.3 Control characteristic of PI-Controllers as proportional integral controller.......................... 45

11.4.4 Control signal of Pulse length Controllers............................................................................... 46

11.4.5 Control signal of Pulse Frequency Controllers........................................................................ 47

11.5 APPENDIX 5 – ABBREVIATIONS USED IN MENU DISPLAYS................................................................... 48

Instruction Manual αlpha CON 2000

1 INTRODUCTION

1.1 At the very beginning

We thank you for having purchased the Eutech Instruments αlpha CON 2000. The construction of the αlpha CON 2000 employs leading edge technology and complies with

safety regulations currently in force. Notwithstanding this, improper use could lead to hazards for the user or a third-party, and/or adverse effects on the plant or other equipment. Therefore,

the operating instructions must be read and understood by the persons involved before work is started with the αlpha CON 2000.

Eutech Instruments do not accept any liability for damage that may arise from neglecting information given in this manual.

This instruction manual identifies safety instructions and additional information by means of the following symbols:

This symbol draws attention to safety instructions and warnings of potential danger which, if neglected, could result in injury to persons and/or damage to property.

This symbol identifies additional information and instructions which, if neglected, could lead to inefficient operation and possible loss of production.

The instruction manual must always be stored close at hand, in a place accessible to all people working with the αlpha CON 2000 .

If you have questions, which are not or insufficiently answered in this instruction manual, please contact your Eutech Instruments supplier. He will be glad to assist you.

1.2 Intended use

Eutech Instruments αlpha CON 2000 is intended solely for conductivity and temperature measurement, as described in this instruction manual.

Any other use, or use not mentioned here, that is incompatible with the technical specifications is deemed inappropriate. The operator is solely responsible for any damage arising from such use.

Other prerequisites for appropriate use include:

− observing the instructions, notes and requirements set out in this instruction manual.

− observing all local safety regulations concerning safety at work.

− observing all information and warnings in the documentation dealin g with the products

used together with the transmitter (housings, sensors, etc.).

− observing the prescribed environmental and operational conditions.

Instruction Manual αlpha CON 2000

1.3 Safety intsructions

The αlpha CON 2000 should be installed and operated only by personnel familiar with the transmitter and who are qualified for such work.

A defective transmitter must neither be installed nor put into service. The αlpha CON 2000 must only be operated under the specified operating conditions

(see section 8). The αlpha CON 2000 must not be repaired by the customer. The αlpha CON 2000 must only be opened to replace the unit fuse or to set the

jumper for Pt100/Pt1000 temperature sensor. This work must be carried out only by personnel familiar with the transmitter and who are qualified for such work. Make sure the mains cable is separated from the power supply before opening the unit.

No modifications to the αlpha CON 2000 are allowed. The manufacturer/supplier accepts no responsibility for damage caused by unauthorised modifications. The risk is borne entirely by the user.

1.4 Putting out of service / Correct disposal of the unit

Putting out of service

• First disconnect the unit from the mains, then undo all electrical connections.

• Remove the unit from the wall / panel.

Correct disposal of the unit

When the transmitter is finally taken out of service, observe the local environmental regulations for correct disposal or send the transmitter to your local Eutech Instruments distributor, they will take care of proper disposal.

Instruction Manual αlpha CON 2000

2 PRODUCT DESCRIPTION

2.1 Description of unit

The Eutech Instruments αlpha CON 2000 is used for measuring conductivity and temperature values. The conductivity values can be measured using limit or P/PI control. The transmitter is available in two versions, one for panel mounting and one for wall mounting in a enclosure. The transmitter can be used for applications such as water treatment and monitoring, galvanic-decontamination, chemical processing, food processing, clean or wastewater control and neutralisation processes.

This transmitter has many user-friendly and safety features which include:

• Menu-driven program that simplifies set-up.

• Built-in non-volatile memory to ensure that calibration and other information are not

erased if power supply fails.

• Push-button for calibration and sensor offset adjustment from the keypad.

• Automatic temperature compensation (ATC).

• Manual temperature compensation setting without the ATC probe, with independent

setting for calibration and process temperature.

• Two galvanically isolated current outputs 0/4...20mA.

• 0 to 2000 seconds time delay adjustment on all relays – minimises false alarms.

• Separately adjustable high and low set-point hysteresis (dead bands) prevent chattering

of relays around the set points.

• Three control modes: limit controller, P controller and PI controller (P/PI controller as pulse length or pulse frequency).

• Large dual display LCD for easy reading with clear multiple annunciators, alarm status, operational and error messages.

• Two switching contacts as set-point relays.

• Separate alarm relay alerting you to set point limits exceeded for a certain time and if the

Pt100/Pt1000 wires are broken or disconnected during the ATC function.

• Wash relay.

• Hold function to freeze output current (0/4...20mA) and release control relays.

• LED indicators signal control activities to visually monitor transmitter status from a

distance.

• Protection against electromagnetic interference. ( Available for panel mount only)

• Back lit and UV light protected LC display.

Instruction Manual αlpha CON 2000

2.2 Measurement and control system

A typical measurement system consists of:

• A conductivity process transmitter

• A conductivity sensor with integrated or separate temperature sensor Pt100/Pt1000.

• An appropriate measurement cable

• An immersion, flow or process assembly

• A final control element such as pump or valve

• A chart recorder

lpha CON 2000 Transmitter

Chart Recorder

Housing and Sensors

Measurement Cable

0/4 - 20 mA

Power Mains (80 - 250 VAC)

Instruction Manual αlpha CON 2000

2.3 Unit overview

Wall mounting version

Panel mounting version

Instruction Manual αlpha CON 2000

2.3.1 Display Overview

The LC display shows two alpha-numerical fields for parameters and measured values as well as various mode and status indicators.

SETUP

HOLD

ERR

MEAS

2.3.2 Key functions

Key Description

CAL

mS µS

°C °F

ATC

Mode indicators: MEAS: measurement mode SETUP: Set-up mode CAL: Calibration mode Status indicator: HOLD: Unit in “HOLD” mode ATC: Visible in ATC (Automatic Temperature

Compensation) mode. Not visible in the Manual Temperature Compensation mode. “ATC” flashes if the temperature probe is faulty in its ATC mode

ERR: Error indicator 4: Measurement range number

Enter Calibration mode (requires access code)

Enter Set-up mode (requires access code) Access sub functions (parameters) within a function group of Set-up mode Confirm (store) set-up parameters and numerical values Start/Confirm calibration in Calibration mode. Select function group in the Set-up mode. Set parameters and numerical values (if key is pressed continuously, the setting speed

increases). Control the relays in MANUAL relay operation. Returns to “Measurement mode” when both keys are pressed simultaneously. Display limit values for SP1 and SP2 and settings for wash contact in AUTO relay

operation. Toggle between RELAY A, RELAY B or Wash relay in MANUAL relay operation

Switch from AUTO to MANUAL relay operation (requires access code)

Instruction Manual αlpha CON 2000

2.3.3 LED indicators

Relay indicators

If REL key is pressed the LED (A, B or W) indicates to which Relay (A, B or Wash) the displayed limit values refer.

Relay mode indicators

Auto LED lights if relay operation is set to automatic mode. Manu LED lights if relay operation is set to manual mode.

Relay status indicators

This LED lights if limit value is exceeded or the ATC probe fails.

2.3.4 Security codes

The access to Calibration mode, Setup mode and Manual relay operation mode is protected with security codes. The security codes are set at the factory and cannot be changed by the user. The following security codes are used:

Security code Mode Description

000 View only mode to view actual settings

This LED lights green if measured value is within the limit for Relay A or lights red if measured value exceeds limit.

This LED lights green if measured value is within the limit for Relay B or lights red if measured value exceeds limit.

This LED lights if cleaning cycle is on.

11 Calibration mode to start calibration

22 Setup mode to configure parameters

Manual relay operation to switch relay operation mode from automatic to manual

Instruction Manual αlpha CON 2000

2.3.5 Menu overview

MEAS

CAL

ENTER

ENT

µS

°C

CCD “000” = Check calibration parameters (V iew only mode)

ENTER

ENT

CCD “11” = Calibration mode SCD “000” = Check setup parameters (View only mode)

SCD “22” = Setup mode

ENTER

ENT

SETUP

HOLD

SETUP

HOLD

SETUP

HOLD

SETUP

HOLD

SETUP

HOLD

SETUP

HOLD

SETUP

HOLD

ENT

Temperatur e set t in gs

see section 6.3

ENT

Relay A (set point 1) se ttings

see section 6.4

ENT

Relay B (set poin t 2) setti n gs

see section 6.4

ENT

Controller settings

see section 6.5

ENT

Curren t ou tput 1 settings

see section 6.6

ENT

Curren t ou tput 2 settings

see section 6.7

SETUP

HOLD

SETUP

HOLD

SETUP

HOLD

SETUP

HOLD

ENT

Wash contact setti ngs

see section 6.8

ENT

Range settings

see section 6.9

ENT

Unit settings

see section 6.10

ENT

CAL

Calibration

see section 5

Instruction Manual αlpha CON 2000

3 ASSEMBLY AND INSTALLATION

3.1 Mounting the unit

Wall mounting version

111.50 [4.39]

144 [5.67]

27.5 [1.08]

24 [.94]

Unit: MM [INCH]

approx. 14 [.55]

66.5 [2.62]

39 [1.54] 78 [3.07]

80 [3.15]

21.5 [.85]

6 [.24]

90 [3.54]

Pg13.5 (3 pcs.)

Holes for post mounting (4X)

Holes fo r wall mounting (2X)

90 [3.54]

Transmitter housing for wall mounting: protection class IP 65

For Pg13.5 cable glands

57.8[2.28]

Instruction Manual αlpha CON 2000

Panel mounting version

Flat gasket 1mm [.04] (to be inserted by customer)

Panel cut out

UNIT: MM [INCH]

Transmitter housing for panel mounting: protection class IP 54 (front), IP 40 (housing)

Instruction Manual αlpha CON 2000

3.2 Connection Diagram

Caution: Ensure electrical mains are disconnected before proceeding.

Connections for wall mounting version

RELA REL B WAS H RELAY ALARM R ELAY

29 28 19

Current

OP 2

OP1

3031 20 22

GND+12V

14 13

HOLD

476589

2524 26

PT100/ PT1000

11 10

31221

15 16 17 18

N L

RELA RELB WASH RELAY ALARM RELAY

11 1 0

31221

N L

29 28 19

Current OP 2

3031 20 22

Current OP1

GND+12V

14 13

HOLD

PT100/

PT1000

2524 26

76589

17 18

1. AC mains live wire **17. 4 Cell / 2 Cell type Conductivity Input

2. AC mains neutral wire 18. 4 Cell type Conductivity Input

3. AC mains protective earth wire 19. 12V Power supply

4. Relay A (SP 1) 20. 12V ground

5. Relay A (SP 1) 21. no connection

6. Relay B (SP 2) 22. Earth ground

7. Relay B (SP 2) 23. no connection

8. Wash relay 24. Temperature ground

9. Wash relay 25. Temperature input

10. Alarm relay (NC) 26. Temperature sense (short to

11. Alarm relay common terminal 25 if using 2- wire RTD)

12. Alarm relay (NO) 27. no connection

13. Hold function 28. 4-20 mA temperature output, -ve terminal

14. Hold function 29. 4-20 mA temperature output, +ve terminal

15. 4 Cell type Conductivity Input 30. 4-20 mA Conductivity output, -ve terminal **16. 4 Cell / 2 Cell type Conductivity Input 31. 4-20 mA Conductivity output, +ve terminal

IMPORTANT: The Alarm relay functions as an “Active Low” device i.e. it switches OFF under Alarm condition. Therefore the Alarm display device should be connected to the ‘NC’ contacts of the relay (10 & 11).

** When using 2 Cell type Conductivity electrode, terminal 15 should be shorted to terminal 16 and terminal 18 should be shorted to terminal 17.

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