EUTECH INSTRUMENTS ALPHA TDS 200 TOTAL DISSOLVED SOLIDS CONTROLLERTRANSMITTER, alpha TDS 200 Instruction Manual

Instruction Manual

α

lpha TDS 200

1/8 DIN Total Dissolved Solids Controller with

Temperature display and Transmitter

68X276105 rev 0
08/2002

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PREFACE

This manual serves to explain the use of the αlpha TDS 200

controller/transmitter. This manual functions in two ways: first, as a step-by­step 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 200 controller/transmitter as possible. If there are doubts in the use of the

αlpha TDS 200 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 subjected to change without notice
as improvements are made, and does not represent a commitment on the part
of Eutech Instruments Pte Ltd.

Copyright© Aug 2002 Eutech Instruments Pte Ltd. All rights reserved.

TABLE OF CONTENTS

1 INTRODUCTION 5

2 SAFETY INFORMATION 6

3 OVERVIEW 7

3.1 F

RONT PANEL

7

3.2 B

ACK PANEL

8

3.3 W

IRING

9

3.4 P

ANEL-MOUNTING THE CONTROLLER

10

4 MEASUREMENT MODE 11

5 PASSWORD 12

6 TDS CALIBRATION 14

7 TEMPERATURE CALIBRATION 17

8 SETUP MODE 18

8.1 G

ENERAL INFORMATION

18

8.2 S

ETUP MODE OVERVIEW

19

8.3 S

ET POINT 1 –

P1.0 21

8.4 S

ET POINT 2 –

P2.0 24

8.5 M

EASUREMENT RANGE SELECTION –

P3.0 26

8.6 C

ONFIGURE TEMPERATURE SETTINGS –

P4.0 27

8.7 V

IEWING

TDS C

ALIBRATION DATA –

P5.0 28

8.8 V

IEWING

TDS / T

EMPERATURE ELECTRODE DATA –

P6.0 29

8.9 S

ET

TDS F

ACTOR –

P7.0 30

8.10 C

ONTROLLER RESET –

P8.0 30

9 RELAYS 32

10 TRANSMITTER FUNCTION 32

11 SPECIFICATIONS 33

12 ACCESSORIES 34

13 GENERAL INFORMATION 37

5

1 INTRODUCTION

Thank you for purchasing a ⅛ DIN TDS 200 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 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

6

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.

7

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 Displayed when measurement range in parts-per-million

7. oC Unit of the displayed parameter (temperature)

8. ppt Displayed when measurement range in parts-per-thousands

Keys

9. MODE

Toggle between TDS and temperature display

10. ENTER

Confirm changes or to enter into further levels of sub-menu

11. ▲(

increment)

Use during calibration and setup modes to increment values.
Press

▲/▼

keys together to escape to Measurement mode

11. ▼(decrement)

Use during calibration and setup modes to decrease values.
Press

▲/▼

keys together to escape to Measurement mode

12. LED Display 14 segment LED display

8.8.8.8.

8

3.2 Back Panel

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

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

19 18 17 16 15 1 4 13

1. VAC live wire

2. VAC neutral wire

3. VAC protective ground wire

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

13.

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

14. Pt 100 connection: input

15. Pt 100 connection: ground

16. TDS positive terminal

17. TDS negative terminal

18. unused

19. unused

9

3.3 Wiring

Caution: Ensure electrical mains is 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 = 3

αlpha TDS 200 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: TDS 200 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 in TDS mode and display OR in temperature mode.

10

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.

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.

SIDE VIEW

TOP VIEW

a

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x

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4

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11

4 MEASUREMENT MODE

Press MODE to toggle between:

•

TDS measurement mode and

•

Temperature measurement mode

Total Dissolved Solids 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.

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 display shows ATC
(Automatic Temperature Compensation) or MTC (Manual Temperature Compensation),
then the current measured temperature (for ATC) or the set temperature (for MTC). The

o

C annunciator lights when you are measuring temperature.

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

See Setup program P4.0 for further instructions.

12

5 PASSWORD

To access Calibration and Setup functions, you need to enter a password code. You
cannot change calibration and setup parameters unless you first enter the password.

The αlpha TDS 200 controller features two separate passwords:

•

TDS and Temperature calibration mode password = 011

•

Setup program password = 022

To enter the password:

1. Press ENTER twice. The display reads “P.000”. The first “0” flashes.

2. Press ENTER again to leave the first digit “0” and to scroll to the next number.

3. Press the ▲or ▼keys to change the second digit to the correct number (1 or 2).

Press ENTER.

4. Press the ▲or ▼keys to change the second digit to the correct number (1 or 2).

Press ENTER.

If you enter an incorrect digit, press MODE to back up.

5. Press ENTER again. You are now in Calibration mode or Setup mode, depending

on password entered.

Note: In the Password Entry mode, if there is no key-press for more than 30 seconds,
Controller will automatically revert to measurement mode.