Eutech instruments ALPHA PH 550 User Manual

Alpha pH 550

Monitor

pH / ORP

ROSS and the COIL trade dress are trademarks of Thermo Fisher Scientific Inc. U.S. patent 6,793,787.

AQUAfast, Cahn, ionplus, KNIpHE, No Cal, ORION, perpHect, PerpHecT, PerpHecTion, pHISA, pHuture, Pure Water, Sage, Sensing the Future, SensorLink, ROSS, ROSS Ultra, Sure-Flow, Titrator PLUS and TURBO2 are registered trademarks of Thermo Fisher.

1-888-pHAX-ION, A+, All in One, Aplus, AQUAsnap, AssuredAccuracy, AUTOBAR, AUTO-CAL, AUTO DISPENSER, Auto-ID, AUTO-LOG, AUTO-READ, AUTOSTIR, Auto-Test, BOD AutoEZ, Cable-Free, CERTI-CAL, CISA, DataCOLLECT, DataPLUS, digital LogR, DirectCal, DuraProbe, Environmental Product Authority, Extra Easy/Extra Value, FAST QC, GAP, GLPcal, GLPcheck, GLPdoc, ISEasy, KAP, LabConnect, LogR, Low Maintenance Triode, Minimum Stir Requirement, MSR, NISS, One-Touch, One-Touch Calibration, One-Touch Measurement, Optimum Results, Orion Star, Pentrode, pHuture MMS, pHuture Pentrode, pHuture Quatrode, pHuture Triode, Quatrode, QuiKcheK, rf link, ROSS Resolution, SAOB, SMART AVERAGING, Smart CheK, SMART STABILITY, Stacked, Star Navigator 21, Stat Face, The Enhanced Lab, ThermaSense, Triode, T RIUMpH, Unbreakable pH, Universal Access are trademarks of Thermo Fisher.

Guaranteed Success and The Technical Edge are service marks of Thermo Fisher.

PerpHecT meters are protected by U.S. patent 6,168,707. PerpHecT ROSS electrodes are protected by U.S. patent 6,168,707. ORION Series A meters and 900A printer are protected by U.S. patents 5,198,093, D334,208 and D346,753.ionplus electrodes and Optimum Results solutions ar e protected by U.S. patent 5,830,338.ROSS Ultra electrodes are protected by U.S. patent 6,793,787.ORP standard is protected by U.S. patent 6,350,367. No Cal electrodes are protected by U.S. patent 7,276,142.© 2009 Thermo Fisher Scientific Inc. All rights reserved. All trademarks are the property of Thermo Fisher Scientific Inc. and its subsidiaries.The specifications, descriptions, drawings, ordering information and part numbers within this document are subject to change without notice.This publication supersedes all previous publications on this subject.

Preface

This manual serves to explain the use of the Al pha pH 550 Monitor. The manual functions in two ways, firstly as a step by step guide to help the us er operate the instrument. Secondly, it serves as a handy reference guide. This instruction manual is written to cover as many anticipated applications of the Alpha pH 550 Monitor. If you have doubts in the use of the instrument, please do not hesitate to contact your nearest Alpha Authorised Distributor.

The information presented in this manual is subject to change without notice as improvements are made, and does not represent a commitment on part of Thermo Scientific.

Thermo Scientific cannot accept any responsibilit y for damage or malfunction of the unit due to improper use of the instrument.

TABLE OF CONTENTS

1 INTRODUCTION 1

1.1 Before You Begin...........................................................................................1

1.2 Intended Use..................................................................................................1

1.3 Safety Instructions..........................................................................................2

1.4 Taking Out of Service / Correct Disposal of the Unit .....................................2

2 GETTING STARTED 3

2.1 Description of Instrument...............................................................................3

2.2 Measurement System....................................................................................4

2.3 Connecting Peripherals.............................................................................5

2.4 Installation....................................................................................................9

2.5 Di sp l ay & K ey p ad .......................................................................................11

3 OPERATION 14

3.1 Measurement mode.......................................................................................14

3.2 Menu Overview..............................................................................................15

4 CALIBRATION MODE 16

4.1 Preparing the Monitor & Electrode for Calibration.........................................16

4.2 Entering pH/ORP Calibration Mode...............................................................16

4.3 pH Calibration ................................................................................................17

4.4 ORP Calibration .............................................................................................21

4.5 Temperature Calibration ................................................................................ 22

5 SETUP MODE 23

5.1 Enter Setup mode ..........................................................................................23

5.2 E

lectrode Offset Setti

ngs ...............................................................................24

5.3 Temperature Settings.....................................................................................25

5.4 Buffer Selection Settings................................................................................27

5.5 Configuration Settings....................................................................................28

5.6 Viewing Electrode Properties.........................................................................30

6 TECHNICAL SPECIFICATIONS 32 7 LIST OF ACCESSORIES 33

7.1 Thermo Scientific Order Codes......................................................................33

7.2 Eutech Instruments Order Code ....................................................................34

8 TROUBLESHOOTING 35 9 GENERAL INFORMATION 36

9.1 Warranty.........................................................................................................36

9.2 Return of Goods.............................................................................................36

9.3 Guidelines for Returning Unit for Repair........................................................36

9.4 Maintenance and Cleaning............................................................................37

10 APPENDICES 38

10.1 Appendix 1 – pH Buffer Values at Various Temperatures............................. 38

10.2 Appendix 2 – Abbreviations Used in LCD......................................................38

1 INTRODUCTION

1.1 Before You Begin

Thank you for purchasing the Alpha pH 550 Monitor. The construction of the Alpha pH 550 Monitor 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 working with the pH Monitor.

The instruction manual must always be stored close at ha nd, in a place accessible to all people working with the pH Monitor.

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

1.2 Intended Use

Alpha pH 550 Monitors are intended solely for pH or ORP 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 oper ator is solely responsible for any damage arising from such use.

Other prerequisites for appropriate use include: – Comply with the instructions, notes and requirements set out in this instruction

manual.

– Comply with all local safety regulations concerning safety at work. – Comply with all information a nd warnings in the documentation deali ng with the

products used together with the pH Monitor (housing, sensors, etc.).

– Comply with the local environmental and operational conditions.

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1.3 Safety Instructions

 The Alpha pH 550 Monitor should be installed and

operated only by personnel familiar with the instrument and who are qualified for such work.

 A defective pH Monitor must neither be installed nor put

into service.

 The Alpha pH 550 must only be operated under the

specified operating conditions (see section 6).

 The Alpha pH 550 must not be repaired by the

customer.

 No modifications to the Alpha pH 550 are allowed. T he

manufacturer/supplier accepts no responsibility for damage caused by unauthorized modifications. The risk is borne entirely by the user.

1.4 Taking Out of Service / Correct Disposal of the Unit

Taking out of Service

 First disconnec t the unit from the power supply and then un do all electrical

connections.

 Remove the unit from the wall.

Correct Disposal of the Instrument

When the Alpha pH 550 is permanently taken out of service, obey the local environmental regulations for correct disposal or send the instrument to your local distributor, they will take care of proper disposal.

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2 GETTING STARTED

2.1 Description of Instrument

The Alpha pH 550 Monitor is used for meas uring pH and temperature values. T he pH values can be measured using industrial combination pH sensors. The temperature values can be measured using 3-wire Pt100 / Pt1000 sensors. The monitor can be used for applications such as water treatment and monitoring, galvanic-decontamination, chemical processing, food processing, clean or wastewater control and neutralization processes.

The pH Monitor has many user-friendly and safety features which include:

• Push-button keypad for calibration and setup

• Built-in non-volatile memory to ensure that calibration and other

information are not erased if power supply fails

• Menu-driven program that simplifies setup

• 1 or 2 point calibration with selectable USA or NIST standard pH

buffer set

• Automatic temperature compensation (ATC)

• Manual temperature compensation setting without the ATC probe,

with independent setting for calibration and process temperature

• Large dual display LCD for easy reading with clear multiple annunciators, operational mode indicators and error indicators.

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2.2 Measurement System

A typical measurement system consists of:

• A pH process monitor

• A pH sensor with integrated or separate Pt100/Pt1000 temperature

sensor

• An appropriate measurement cable

• An immersion, flow or process assembly

lpha pH 550 Monitor

ESC

CAL

pH Monitor

lpha pH550

ENT

Power Adaptor

Housing and Sensors

Measur ement Cable

(+9 V DC)

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2.3 Connecting Peripherals

2.3.1 Connection Terminals

Remove Back Cover:

Remove the screws from the four corners at the back of the pH Monitor. Remove the back cover. The connectors are exposed on the back PCBA as shown in the Figure 1 below.

Connectors:

• J11 – 24V DC power

• J8 – 9V DC power

J10 - pH electrode & Temperature probe connections (wiring has to be done in

J11 Connections

1. +ve

2. Gnd

J10 Connections

1. pH Sense

2. pH Reference

3. No Connection

4. No Connection

5. Pt 100 Compensate

6. Pt 100 Sense

7. Pt 100 GND

8. Potential Matching Pin

the detachable connector

24V DC

1)+v

J10

9V DC Power

Screw

Figure 1: Outer Side of Back PCBA

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2.3.2 Switching Between PT100 & PT1000 Temperatu re Sensors

The Monitor supports both Pt100 & Pt1000 (2-wire or 3-wire) temperature sensors. The default factory setting is Pt100. If you need to use Pt1000 temperature sensor, you have to change the jumper setting (J7) as described below.

Remove Back Cover:

Remove screws from the four corners at the back of the pH Controller. Remove th e back cover.

Remove Back PCBA:

Remove the screw located center of the back PCBA (Figure 1). Detach the back PCBA from the Controller. Turn over the back PCBA. Locate J7 jumper on the inner side of the back PCBA as shown in

Figure

2 below.

Figure 2: Inner Side of Back PCBA

Set Jumper J7:

Set the J7 jumper to required sensor (Pt100 or Pt1000) type

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2.3.3 Connecting pH/ORP Electrode

1. If the pH/ORP electrode has a BNC connector, remove the BNC connector from the cable.

NOTE: Oakton Instruments offers an optional ‘BNC to Spade Lug adapter’ (Order code: 05994-90) that can be used with pH/ORP electrode without removing the BNC connector.

2. Strip the insulation of the cable so that the bare wires are exposed enough for connection as shown in Figure 3.

Insulation

Figure 3 : pH/ORP Electrode Cable

NOTE: Make sure to strip inner black layer (screen) to expose the

clear sheath.

3. Connect pH sensing wire to Pin 1 of J10 connector

4. Connect pH reference wire to Pin 2 of J10 connector

pH Reference Wire

Clear sheath

pH Sensing Wire

Screen

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2.3.4 Connecting Temperature Probe

For Automatic Temperature Compensated (ATC) pH readings, a 100Ω Pt RTD temperature probe (2-wire or 3-wire) can be connected to the Controller.

3-Wire Probe:

1. Connect PT100 compensate wire to Pin 5 of J10 connector

2. Connect PT100 sense wire to Pin 6 of J10 connector

3. Connect PT100 GND wire to Pin 7 of J10 co nnector

2-Wire Probe:

1. Short Pin 5 & 6 of J10 connector using a small piece of wire

2. Connect PT100 sense wire to Pin 6 of J10 connector

3. Connect PT100 GND wire to Pin 7 of J10 connector

2.3.5 Connect Potential Matching Pin (PMP)

If using an electrode with a PMP, connect the additional wire (PMP) from the pH electrode to Pin 8 of J10 connector. This liquid electrical reference wire is only used when the pH Controller is configured to ‘Symmetrical mode of operation’. Refer section 5.5 for details on symmetrical mode of operation.

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2.4 Installation

2.4.1 Mechanical Dimensions

CAL

PH/ORP RF Transmitter

2.4.2 Wall Mount

Alpha pH 550

Alpha pH 600

ESC

ENT

pH Monitor

Pierce through holes at both sides

Cover the catch slots at both sides with overlays

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2.4.3 Panel Mount

Prepare panel cut-out o

92.0 mm X 92.0 mm

Remove back cover o

pH Monitor and slide it through panel cut-out

Panel

Gasket

Panel

Insert threaded rods through catch

until pH Meter is held against panel

ttach catch to both sides

of pH Mete

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+ 30 hidden pages