EUTECH INSTRUMENTS ALPHA PH 200 - REV 4 Manuale utente

68X276101 |Rev.4 |Feb 2008

Instruction Manual

αlpha pH 200

1/8 DIN pH/ORP Controller Transmitter

pH / mV / ºC

PREFACE

This manual serves to explain the use of the αlpha pH 200 controller/transmitter.

This manual functions in two ways: firstly as a step-by-step guide to help you

operate the meter; secondly as a handy reference guide.

This manual is written to cover as many anticipated applications of the αlpha pH

200 controller/transmitter as possible. If there are doubts in the use of the αlpha pH

200 controller/transmitter, do not hesitate to contact your nearest αlpha Authorized

Distributor.

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

Thermo Scientific.

Thermo Scientific cannot accept any responsibility for damage or malfunction to

the unit caused by improper use of the instrument.

- 2 -

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 ........................................................... 6

4 MEASUREMENT MODE............................................................................... 7

5 PASSWORD.................................................................................................. 8

6 PH CALIBRATION ...................................................................................... 10

7 ORP CALIBRATION ................................................................................... 13

8 TEMPERATURE CALIBRATION................................................................ 14

9 SETUP MODE ............................................................................................. 15

9.1 GENERAL INFORMATION ........................................................................... 15

9.2 SETUP MODE OVERVIEW........................................................................... 16

9.3 SET POINT 1–P1.0................................................................................. 17

9.4 SET POINT 2–P2.0................................................................................. 19

9.5 CONFIGURATION –P3.0 ........................................................................... 21

9.6 VIEWING CALIBRATION POINTS:PHOR ORP –P4.0.................................... 23

9.7 VIEWING PHELECTRODE DATA –P5.0 ...................................................... 24

9.8 VIEWING ORP ELECTRODE DATA –P5.0................................................... 25

9.9 CONTROLLER RESET –P6.0..................................................................... 26

10 RELAYS....................................................................................................... 27

11 TRANSMITTER FUNCTION ....................................................................... 27

12 ERROR MESSAGES................................................................................... 27

13 SPECIFICATIONS....................................................................................... 28

14 ACCESSORIES........................................................................................... 29

15 GENERAL INFORMATION......................................................................... 34

- 1 -

1INTRODUCTION

Thank you for purchasing a αlpha pH 200 ⅛DIN pH/ORP Controller. This

controller is part of a series of quality process controllers available from Thermo

Scientific/ Eutech Instruments. These sturdy, economical pH/ORP 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;

When shipped, the controller is set to the pH mode. See Setup program P3.1 for

directions on selecting ORP mode.

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

•Two-point pH calibration, offset temperature and ORP calibration

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

•Selectable automatic or manual temperature compensation

•Two-level password protection

•Removable terminal strips for quick and easy connections

•Non-Volatile memory 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 -

2SAFETY INFORMATION

The αlpha Controller/Transmitter should 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 -

3OVERVIEW

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. pH Unit of the displayed parameter (pH)

7. oC Unit of the displayed parameter (temperature)

8. mV Unit of the displayed parameter (ORP)

Keys

9. MODE Use to toggle between measurement modes

(pH/ORP and temperature)

10. ENTER Press to confirm changes or to enter into further

levels of the lower menu

11. ▲/ ▼

(increment /

decrement)

Use during calibration and setup modes to

increment or decrement . Press both keys together

in calibration and setup modes to escape to

Measurement mode

12. Full 14-segment

display

- 4 -

3.2 Back Panel

The back panel consists of four different connectors that can be used with

removable terminal blocks (included):

4 - 20 m

210

4- 20 mA

RELAY 1 - NO

RELAY 1 - POLE

RELAY 1 - NC

Pt 100 - GND

RELAY 2 - NO

Pt 100 - IN

RELAY 2 - POLE

Pt 100 - SENSE

GROUND

RELAY 2 - NC

LIQUID GND

J2 J1

pH/ORP

WARNING

A. 3 pin connector (for power supply)

B. 9 pin connector (for relays)

C. 7 pin connector (for temperature sensor)

D. BNC connector (for pH or ORP electrode)

A. 1. L- Live

2. N- Neutral

3. E- Earth Ground

13. Pt 100- SENSE

14. Pt 100- IN

15. Pt 100-GND

16. NC

17. NC

18. NC

19. NC

4. Liquid GND

5. RELAY 2- NC

6. RELAY 2- POLE

7. RELAY 2- NO

8. RELAY 1- NC

9. RELAY 1- POLE

10. RELAY 1- NO

11. – 4 to 20 mA

12. +4 to 20 mA

BNC for pH/ORP

- 5 -

3.3 Wiring

Caution: Ensure electrical mains is disconnected before proceeding.

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

•VAC protective ground wire = 3

•VAC neutral wire = 2

•VAC live wire = 1

The alpha pH 200 controller accepts voltages from 85 to 260 VAC, 50/60 Hz or

DC.

2. Connect the Pt 100 leads to terminals 13 and 15 (terminal block B). Either wire

can be connected to either terminal. Terminals 13 and 14 must be shunted

unless using a 3-wire RTD.

NOTE: pH 200 is factory set for manual temperature compensation. ATC can

be selected in Program P3.3.

3. Slide the BNC connector of the pH (ORP) probe to the BNC connector on the

back of the controller.

Turn the notches of the connector until they lock into place.

4. Power on the controller. The display automatically shows the pH (ORP) reading,

and the pH (ORP) annunciator lights.

NOTE: In the event Pt 100 is not connected or the connection is broken in the ATC

mode, the pH/ORP display flashes to alert you.

- 6 -

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.

BACK VIEW

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

approx.154.20

approx.100

Wallp

Catch

Threade

Catch

Threadedrod

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