Eutech Instruments CON 100 C-CX User Manual

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INSTRUCTION MANUAL

MODE

68X103704 6/98

uS/mS

888

SETU

Technology Made Easy ...

READY

ENTER

RELAY

Preface

This manual serves to explain the use of the Alpha CON 100 Conductivity Controller/Transmitter. The units covered are Alpha C and CX Conductivity Controller/ Transmitter.

The instruction manual functions in two ways: first, as a step by step guide to help you operate and understand the operation of the unit and second, as a handy reference guide.

The information presented in this manual is subject to change as improvements are made, and does not represent a commitment of Eutech Instruments Pte Ltd.

This instruction manual is written to cover as many anticipated applications of the Alpha CON 100 C/CX Conductivity Controller/Transmitter as possible. If there are doubts in the use, please do not hesitate to contact the nearest Eutech Instruments’ Authorized Distributor.

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

Eutech Instruments (S) Pte Ltd Blk 55, Ayer Rajah Crescent #04-16/24, Singapore 139 949 Tel: (65) 778 6876; Fax: (65) 773 0836 E-MAIL: INFO@EUTECHINST.COM; WEB PAGE : HTTP://WWW.EUTECHINST.COM

TABLE OF CONTENTS

1. INTRODUCTION 1

2. GETTING ACQUAINTED 3

2.1 Front Panel 3

2.2 The Back Panel 4

2.3 Selecting Conductivi ty Measurement Range 4

2.4 Wiring 5

3. OPERATING THE CONTROLLER 6

The Main Display 6

4. SETTING UP THE CONTROLLER 7

4.1 Setting and Changing the Password 7

4.2 Setting the Controller Range (S oftware) 9

5. CALIBRATING THE CONTROLLER 10

5.1 The Lower Level Menus 10

5.2 Calibrating for Conductivity Measurement 10

5.3 Calibrating the Controller for Temperature Measurement 12

5.4 Setting the Alarm Feature 14

5.5 Setting Temperature Coef f i cient 18

6. SETTING TO FACTORY DEFAULT 19

7. USING THE CONTROLLER CURRENT LOOP FOR DATALOGGING (FOR TRANSMITTER MODEL ONLY) 20

8. ADDITIONAL INFORMATION 21

Appendix 1 23 Appendix 2 24 Technical Specifications 25

1. INTRODUCTION

The alpha CON 100 series Conductivit y Controller/Transmitter is an addition to the line of process controllers from Eutech Instruments. Incorporated with the ASIC (Application Specific Integrated Circuit) microprocessor technology, this panelmounted on-line controller provides m any user-friendl y features desirable in conductivit y Cont rol l e rs.

This versatile conductivity control ler can be used for m easuring and controlling the Conductivity of a wide range of solutions in process streams.

Conductivity Ranges :

Range Resolution Cell Constant

0 - 99.9 uS

0 - 999 uS

0 - 999 uS 0 - 9.99 mS 0 - 99.9 mS

0 - 200 mS 0 - 200 mS

0.1 uS 1 uS 1 uS

0.01 mS

0.1 mS 1 mS 1 mS

0.1

1.0

10.0

Some of the features of this Controller are :

• Automatic temperature compensation (with PT 100)

• Manual temperature compensation setting without the

temperature probe

• Adjustable temperature coefficient from 0. 0 to 10.0%

• Push button calibration with cell correction function

• High and Low alarm triggering relays

• User-defined Password feature to prevent unauthorized

entry to change the calibration data, hysteresis function, high and low setpoints information

• Alarm and operational message annunciators

• Hysteresis function t o prevent chattering of relays around

the setpoint

• High-end transmitter model with 4-20 mA current output

for datalogging purposes

• Built-in memory backup to ensure that calibration and

other information will not be erased if power supply fails

• Switchable mains voltages of 110 VAC or 220 VAC via

user selectable internal ju mper

2. Getting Acquainted

2.1 Front Panel

The front panel consists of a 3 digit LED display together with 5 LED annunciators. There are also 4 k eys as shown below.

MODE

888

ENTE

uS /mS

The keys available are the ▲ (UP/INCREMENT), ▼ (DOWN/DECREMENT), MODE and ENTER keys.

The annunciators are µS/mS, °C, SETUP, READY, and RELAY. The µS/mS annunciator lights up in Conductivity measurement mode. The READY annunciator lights up when the Conductivity stabilizes. RELAY lights up when any of the HI SET or LO SET relays is activated.

The MODE key allows you to select between Conductivity display, the temperat ure display or the SETUP menu display. While in one of the SETUP menus, it also functions as an ESCAPE key. For example, while sett ing the Hi SET point , you can press MODE key to return to the measurem ent mode.

You can confirm changes or enter into further levels of the lower menu by pressing the ENTER key. The ▲ (UP/INCREMENT) and ▼ (DOWN/DECREMENT) keys allow you to change information or t o select between different menus. Holding down the key increases the scrolling speed, i.e. changeover of 1st digit (ones) t o 2nd (tens) and then 3rd digit (hundreds).

SETUP

R E ADY REL AY

2.2 The Back Panel

The back panel consists of t wo connectors . The f irs t one is a 4way screw terminal and the second is a 12-way screw term inal. Refer to the label on top of the unit for diagram. The connection for the 4-way screw termi nals are (from the left to right):

1. PT 100 connection

2. PT 100 connection

3. Conductivity input (Inner core)

4. Conductivity input (Outer shield) The connections for the 12-way screw term inals are (from left

to right),

5. High Set Relay deactivat ed position

6. High Set Relay center pole

7. High Set Relay activat ed position

8. Low Set Relay deactivated posit i o n

9. Low Set Relay center pole

10. Low Set Relay activated posit i o n

11. 4-20 mA - ve connection (for transmitter m odel s only)

12. 4-20 mA + ve connection (for transmitter model s only)

13. Protective earth

14. Protective earth

15. Neutral

16. Live

2.3 Selecting Conductivity Measurement Range

You can set the appropriate conductivity measurement range from the front panel. See S ection 4.2 for details on Setting the Controller Range (Software). Note that for “mA” the LED display shows “mA”.

2.4 Wiring

Connect the power supply to the GND (EARTH) - 13 or 14, NEUTRAL - 15 and LIVE - 16 screw terminals. Make sure that the power supply jumper setting matches the mains voltage (110 VAC or 220 VAC). See Appendix 2 for the jum per setting for the voltage selecti on.

Connect the Conductivity electrode to the 4-way sc rew terminal at the back panel and the PT 100 tem perature probe to the PT 100 connections.

Power on the controller and the display automatically s hows the Conductivity reading. The uS/m S annunciator lights up. Once the reading is stable, the READY annunciator lights up. However, if the PT 100 temperature probe is not connected, automatic temperature compensation does not function. You can set the temperature at a selected value. The tem perature is set to factory default at 25.0

NOTE : Eutech Instruments will not be responsible f or incorrect

application of the controller using improper voltage sources or wrong jumper settings.

3. Operating the Controller

The Main Display

Press MODE key to switch to

SETUP

MODE

three main displays - the

ENTE

Conductivity display, the temperature display and “SEt” display.

MODE

Press MODE key once to get into

ENTE

the temperature measurement. The °C annunciat or lights up when you are measuring temperature. The display shows current measured temperature (with ATC)

MODE

or the temperature that was set in

ENTE

MTC mode. Press MODE key again and the display toggles to the “SEt” for SETUP menu.

7.4

uS/mS

24.0

SEt

Press ENTER key to go into the lower-level setup m enus while the display shows "SEt". These lower-level menus allow calibration of Conductivit y, Temperature and other parameters including set password, Hi or Lo Setpoints, Hi and Lo Hysteresis values and temperature coefficient.

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