Eutech Instruments TDS 190 User Manual

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Instruction Manual

αlpha TDS 190

1/8 DIN Total Dissolved Solids Controller

with Temperature display and Transmitter

68X276108 Rev 0 11/2004

Technolo

adeEa

2004

PREFACE

This manual serves to explain the use of the αlpha TDS 190 controller/transmitter. This manual functions in two ways: first, as a step-by-step guide to help you operate the meter; second, it serves as a handy reference guide.

This manual is written to cover as many anticipated applications of the αlpha TDS 190 controller/transmitter as possible. If there are doubts in the use of the αlpha TDS 190 controller / transmitter, do not hesitate to contact the nearest Eutech Instruments Authorized Distributor.

Eutech Instruments cannot accept any responsibility for damage or malfunction to the controller/transmitter caused by improper use of the instrument. Remember to fill in the guarantee card and mail it to your Authorized Distributor or Eutech Instruments Pte Ltd.

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

TABLE OF CONTENTS

1 INTRODUCTION 1 2 SAFETY INFORMATION 2 3 OVERVIEW 3

3.1 FRONT PANEL 3

3.2 BACK PANEL 4

3.3 WIRING 5

3.4 PANEL-MOUNTING THE CONTROLLER 5

3.5 FERRITE ASSEMBLY 6

4 MEASUREMENT MODE 7

4.1 MEASUREMENT MODE DISPLAY 7

4.2 SET POINTS ADJUSTMENTS 8

5 PASSWORD 9 6 TDS CALIBRATION 11 7 TEMPERATURE CALIBRATION 13 8 SETUP MODE 14

8.1 GENERAL INFORMATION 14

8.2 SETUP MODE OVERVIEW 15

8.3 SET POINT 1 – P1.0 16

8.4 SET POINT 2 – P2.0 18

8.5 MEASUREMENT RANGE SELECTION – P3.0 20

8.6 CONFIGURE TEMPERATURE SETTINGS – P4.0 21

8.7 VIEWING TDS CALIBRATION DATA – P5.0 22

8.8 VIEWING TDS/ TEMPERATURE ELECTRODE DATA – P6.0 23

8.9 SETTING TDS FACTOR – P7.0 24

8.10 CONTROLLER RESET – P8.0 25

9 RELAYS 26 10 TRANSMITTER FUNCTION 26 11 SPECIFICATIONS 27 12 ACCESSORIES 28 13 GENERAL INFORMATION 31

1 INTRODUCTION

Thank you for purchasing the αlpha TDS 190 ⅛ DIN TDS Controller. This controller is part of a series of quality process controllers available from Eutech Instruments. These sturdy, economical TDS controllers are designed with the features and reliability of a much more expensive instrument.

Your controller includes:

• Removable terminal blocks for easy connections;

• Two mounting brackets for easy panel mounting;

Some features of this controller are:

• Two set point, two SPDT relay operation

• Scrolling, 14-segment LED guides user easily through setup functions

• Reliable power supply from 85 to 260 V AC, 50/60 Hz or DC withstands

voltage fluctuations

• Push-button operation from the front panel

• Single-point calibration for each individual range

• Adjustable hysteresis band prevents rapid contact switching around set-point

• Selectable automatic or manual temperature compensation

• Two-level password protection

• Removable terminal strips for quick and easy connections

• Built-in non volatile memory backup retains setup even if power fails,

and lets you configure unit before installation

• Isolated 4-20 mA output for remote monitoring or hard copy recording

2 SAFETY INFORMATION

The Eutech Controller / Transmitter shall be installed and operated only in the manner specified in the Instruction manual. Only skilled, trained or authorized 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.

3 OVERVIEW

3.1 Front Panel

The front panel consists of a 4-digit LED display, 8 LED annunciators and 4 keys.

Annunciators

1. REL 1 Displayed when Relay 1 is activated

2. REL 2 Displayed when Relay 2 is activated

3. MEAS Displayed in measurement mode

4. CAL Displayed in calibration mode

5. SETUP Displayed in setup mode

6. ppm Unit of the displayed parameter (parts per million)

C Unit of the displayed parameter (temperature)

8. ppt Unit of the displayed parameter (parts per thousand) Keys

9. MODE Use to toggle between Measurement modes

10. CAL / ENTER Use to enter Calibration mode.

11. SP1 / ▲ SP2 / ▼

12.14-segment display

(TDS and temperature). Use also to enter into levels of the Setup mode

and to confirm changes made. Use to enter Set Point 1 (SP1) or Set Point 2 (SP2) adjustment mode. Use as increment or decrement keys during Calibration and Setup modes. Use both keys together in Calibration and Setup modes to escape to Measurement mode.

SP1

SP2

ppm

CAL

ENTER

MODE

ppt

TDS 190 Series

3.2 Back Panel

The back panel consists of three different connectors that can be used with removable terminal blocks (included):

153514

1820 1921

12 11 10 9

Caution

RELAY1

8177166

RELAY2

C N

O C

NC NC N L

E S

PT100

1. VAC live wire

2. VAC neutral wire

3. unused

4. unused

5. Relay 2 deactivated position (normally closed)

6. Relay 2 center pole

7. Relay 2 activated position (normally open)

8. Relay 1 deactivated position (normally closed)

9. Relay 1 center pole

10. Relay 1 activated position (normally open)

11. 4-20 mA connection, negative

12. 4-20 mA connection, positive

Pt 100 connection: sense (jumper to terminal 14 if using 2-wire RTD)

13.

14. Pt 100 connection: input

15. Pt 100 connection: ground

16. Conductivity positive terminal

17. Conductivity negative terminal

18. unused

19. unused

20. VAC protective ground wire

21. VAC protective ground wire

3.3 Wiring

Caution: Ensure electrical mains are disconnected before proceeding.

1. Connect the power supply to the three-pin terminal block

• VAC live wire = 1

• VAC neutral wire = 2

• VAC protective ground wire = 20 OR 21

αlpha TDS 190 controller accepts voltages from 85 to 260 VAC, 50/60 Hz or DC.

2. Connect the Pt 100 leads to terminals 13 to 15 of the seven-pin terminal block. Either wire can be connected to either terminal. Terminals 13 and 14 must be shunted unless using a 3-wire RTD.

NOTE: αlpha TDS 190 is factory set for Automatic temperature compensation. MTC can be selected in Program P4.0.

3. Power on the controller. The display automatically shows the TDS reading, the ppm and ‘MEAS’ annunciators’ lights.

NOTE: In the event Pt 100 is not connected or the connection is broken in the ATC mode, the display flashes ‘OR’ to alert you.

3.4 Panel-mounting the controller

The supplied mounting hardware allows surface mounting to all panels and protective enclosures. Mounting cut-out size is 91 x 45 mm.

To attach the mounting to the controller:

1. Align the catch to the side of the controller, and insert threaded rods through

catch.

19 18 17 16 15 1 4 1321 20

12 11 10 9 8 7 6 5 4 3 2 1

2. Screw the threaded-rod through the catch in a clock-wise direction. Tighten

until the catch holds the controller firmly against the back of the panel or protective housing. Repeat on the other side.

Wall panel

0 2

. 4 5

1 .

x o

r p p a

Catch

Threaded rod

approx.

100

Catch

Threaded rod

SIDE VIEW

TOP VI EW

3.5 Ferrite Assembly

The power cable (L, N & E) needs to be connected to the instrument with two turns through the Split Ferrite which is supplied as an accessory with the instrument. It is strongly suggested that the Ferrite element supplied as a standard accessory be installed as described below.

4 MEASUREMENT MODE

The αlpha TDS 190 controller is capable of taking TDS measurement with Automatic (ATC) or Manual (MTC) Temperature Compensation. The measurements are displayed distinguishingly by the annunciators on the front panel.

4.1 Measurement mode display

Press the MODE key to toggle between TDS and Temperature measurement mode.

Conductivity Measurement Mode

The controller displays the selected TDS range number, R X (X ranges from 1 to

8), for 2 seconds before displaying the TDS measurement. The

annunciator will light up depending on which range is selected.

TDS Range Range No., R Resolution Cell Constant

0.00 – 10.00 ppm 1 0.01 ppm 0.1

0.0 – 100.0 ppm 2 0.1 ppm 0.1

0.0 – 100.0 ppm 3 0.1 ppm 1 0 – 1000 ppm 4 1 ppm 1

0.00 – 5.00 ppt 5 0.01 ppt 1

0.00 – 10.00 ppt 6 0.01 ppt 1

0.0 – 100.0 ppt 7 0. 1 ppt 1

0.0 – 100.0 ppt 8 0.1 ppt 10

Temperature Measurement mode

Press MODE key once to view the temperature measurement. The °C annunciator lights up. The display shows ATC or MTC, then the current measured temperature. For selection of temperature compensation ATC or MTC, see Setup program P4.1.

NOTE: After pressing the MODE key to display Temperature, if there is no further key-press, the Controller will automatically revert to TDS Measurement mode after about 30 seconds.

ppm or ppt

4.2 Set Points Adjustments

You can make quick set points adjustments with the direct access of the Set Points adjustment modes (SP1 and/or SP2). By just pressing the SP1/▲ or SP2/▼key, you can enter the Set Point adjustment mode and set a new TDS value that will cause your controller to activate.

Set Point 1 (SP1) adjustment mode

This lets you adjust the TDS value in Set Point 1. If this value is crossed, the set point relay 1 LED will light.

1. Press the SP1/▲ key. The screen will scroll P1.1, SP1, and then the current set point value.

2. Press the ▲ or ▼ keys and adjust first relay set point. Default value is 10% of full scale of range selected.

3. Press ENTER to confirm and return to the measurement mode.

NOTE: Press ▲ and ▼ keys together (ESCAPE) at anytime, to return to Measurement mode.

Set Point 2 (SP2) adjustment mode

This lets you adjust the TDS value in Set Point 2. If this value is crossed, the set point relay 2 LED will light.

4. Press the SP2/▲ key. The screen will scroll P2.1, SP2, and then the current set point value.

5. Press the ▲ or ▼ keys and adjust first relay set point. Default value is 90% of full scale of range selected.

6. Press ENTER to confirm and return to the measurement mode.

NOTE: Press ▲ and ▼ keys together (ESCAPE) at anytime, to return to Measurement mode.

NOTE: These modes are only for adjusting relay 1 and/or relay 2 set points values. To set the relays as low or high set points or to set its hysteresis values, you have to make the adjustments from the Setup mode as in Section 8.3 and Section 8.4.

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