Thermo Scientific Alpha pH 800 Manuale utente

Alpha pH 800

Controller/Transmitter

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, AUTO-BAR,

AUTO-CAL, AUTO DISPENSER, Auto-ID, AUTO-LOG, AUTO-READ, AUTO-STIR, 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,

TRIUMpH, 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 are 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

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 Alpha pH 800 process controller/transmitter.

The manual functions in two ways, firstly as a step by step guide to help the user 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 800 process

controller/transmitter. If you have doubts in the use of the instrument, please do not

hesitate to contact the nearest Authorized Distributor.

Thermo Scientific will not accept any responsibility for damage or malfunction of the

unit due to improper use of the instrument.

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.

Safety Information

This 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.

TABLE OF CONTENTS

1 INTRODUCTION 1

1.1 Description of Unit ...............................................................................................................1

1.2 Applications .........................................................................................................................2

2 ASSEMBLY AND INSTALLATIONS 3

2.1 Measurement and Control System...................................................................................... 3

2.2 Unit Dimensions...................................................................................................................4

3 ELECTRICAL CONNECTIONS 5

3.1 Connection Diagram............................................................................................................5

3.2 Back Panel...........................................................................................................................7

4 OVERVIEW 9

4.1 Keypad and Display.............................................................................................................9

4.1.1 Keypad........................................................................................................................ 9

4.2 Function Groups ................................................................................................................11

4.3 Control Concept................................................................................................................. 11

5 MEASUREMENT 12

5.1 Display in Measurement mode.......................................................................................... 12

6 CALIBRATION 13

6.1 pH Calibration....................................................................................................................13

6.2 ORP – mV Calibration .......................................................................................................15

7 ADVANCED SET UP MODE 16

7.1 Electrode Offset (OFS) sub-function.................................................................................. 16

7.2 Setting temperature (Set oC) sub-function.........................................................................17

7.2.1 Selecting automatic or manual temperature compensation......................................17

7.2.2 Temperature calibration (ATC mode only)................................................................ 18

7.2.3 Setting manual temperature compensation..............................................................19

7.3 Control Relay A/Control Relay B (SP1/SP2) sub-function.................................................20

7.3.1 Entering Set point 1 (Set point 2) sub-function.........................................................20

7.3.2 Selecting set point values.........................................................................................20

7.3.3 Choosing High or Low set points..............................................................................21

7.3.4 Selecting a hysteresis (dead band) value.................................................................22

7.3.5 Setting an on-delay time lag..................................................................................... 23

7.3.6 Setting an off-delay time lag..................................................................................... 24

7.4 Configuration (ConF) sub-function..................................................................................... 25

7.4.1 Entering Configuration sub-function .........................................................................25

7.4.2 Selecting pH or ORP mV measurement...................................................................26

7.4.3 Reverting to factory default settings .........................................................................26

7.5 Calibration (CAL) sub-function........................................................................................... 27

7.5.1 Entering Calibration mode from Advanced Set-up mode ......................................... 27

8 TECHNICAL SPECIFICATIONS 28

9 ACCESSORIES 29

10 GENERAL INFORMATION 30

10.1 Warranty ............................................................................................................................30

10.2 Packaging..........................................................................................................................30

10.3 Return of Goods ................................................................................................................30

10.4 Guidelines for Returning Unit for Repair............................................................................ 30

11 APPENDICES 31

11.1 Appendix 1.........................................................................................................................31

11.2 Appendix 2.........................................................................................................................32

11.3 Appendix 3.........................................................................................................................33

1 INTRODUCTION

1.1 Description of Unit

Thank you for purchasing ¼ DIN 800 series pH/ORP process controllers.

This unit is used for measuring either pH or ORP parameter one at a time,

and the operational mode is switchable from the menu. You can use this unit

to measure pH or ORP with limit control. This controller has many user-

friendly and safety features which include:

•Menu-driven program that simplifies set-up

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

other information are not erased if power supply fails

•Push-button two-point calibration and electrode offset adjustment

from the keypad

•Automatic temperature compensation (ATC)

•Manual temperature compensation setting without the ATC probe, with

independent setting for calibration and process temperature

•0 to 2000 second time delay adjustment on all relays – minimise false

alarms

•Separately adjustable high and low set point hysteresis (dead bands)

prevent chattering of relays around the set points

•Asymmetrical/symmetrical input for pH/ORP operation

•Large dual display LCD for easy reading with clear multiple

annunciators, alarm status, operational and error messages

•Two switching contacts as set-point triggering relays

•Hold function freezes output current (4/20mA) and control relays

•LED indicators signal control activities to monitor controller status from a

distance

•Protection against electromagnetic interference – Input and output

are free from external inference

1.2 Applications

Use this controller in panel mounted enclosures for applications such as

water treatment and monitoring, galvanic-decontamination, chemical

processing food processing, clean or waste water control and neutralisation

process.

2 ASSEMBLY AND INSTALLATIONS

2.1 Measurement and Control System

A typical measurement system consists of:

•a pH/ORP process controller

•a pH/ORP combination electrode with integrated or separate temperature

sensor Pt 100/1000,

•an immersion, flow or process assembly with or without a potential

matching pin (PMP)

•a final control element such as pump or valve

•a recorder

PH Controller

Flow Assembly

Measurement Cable

Process Assembly

with Electrode Po

(220

wer Mains

/110 VAC)

Chart Recorder

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