Thermo Scientific Alpha pH 600 User manual

Instruction Manual
Alpha pH 600
RF Transmitter System
pH / ORP / ºC / ºF
68X450201 |Rev.0 |Oct 2008

Preface
This manual serves to explain the use of the Alpha pH 600 Series RF transmitter. It
functions in two ways, firstly as a step by step guide to help you to operate the
transmitter. Secondly, it serves as a handy reference guide. It is written to cover as
many anticipated applications of the transmitter as possible. If there are doubts in
the use of the transmitter, please do not hesitate to contact the nearest Authorized
Distributor.
Thermo Scientific will not accept any responsibility for damage or malfunction to the
transmitter caused by improper use of the instrument.
Remember to fill in the guarantee card and mail it back to your authorized
distributor.
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
Thermo Scientific.
Copyright © 2008
All rights reserved

TABLE OF CONTENTS
1INTRODUCTION 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
2GETTING STARTED 3
2.1 Description of Instrument ............................................................................... 3
2.2 Measurement System .................................................................................... 4
2.3 Connecting Peripherals ............................................................................. 5
2.4 Installation.................................................................................................... 9
2.5 Display & Keypad ....................................................................................... 10
3OPERATION 13
3.1 Measurement mode ....................................................................................... 13
3.2 Menu Overview .............................................................................................. 14
4CALIBRATION MODE 15
4.1 Preparing the Transmitter & Electrode for Calibration ................................... 15
4.2 Entering pH/ORP Calibration Mode ............................................................... 15
4.3 pH Calibration ................................................................................................ 16
4.4 Check Calibration........................................................................................... 21
4.5 ORP Calibration ............................................................................................. 21
4.6 Temperature Calibration ................................................................................ 22
5SETUP MODE 23
5.1 Enter Setup mode .......................................................................................... 23
5.2 Electrode Offset Settings ............................................................................... 24
5.3 Temperature Settings..................................................................................... 25
5.4 Buffer Selection Settings................................................................................ 27
5.5 Configuration Settings.................................................................................... 28
5.6 Viewing Electrode Properties......................................................................... 31
6TECHNICAL SPECIFICATIONS 32
7LIST OF ACCESSORIES 33
7.1 Thermo Scientific ........................................................................................... 33
7.2 Eutech Instruments ........................................................................................ 34
8TROUBLESHOOTING 35
9GENERAL INFORMATION 36
9.1 Warranty......................................................................................................... 36
9.2 Return of Goods............................................................................................. 36
10 APPENDICES 37
10.1 Appendix 1– pH Buffer Values at Various Temperatures.............................. 37
10.2 Appendix 2 – Abbreviations Used in LCD...................................................... 38

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1 INTRODUCTION
1.1 Before You Begin
Thank you for choosing the Alpha pH 600 Series RF Transmitter.
The construction of Alpha pH 600 Series 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 Transmitter.
The instruction manual must always be stored close at hand, in a place accessible
to all people working with the transmitter.
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
The Alpha pH 600 Series RF Transmitters are intended solely for pH or ORP and
temperature measurements, as described in this instruction manual. This
transmitter system is currently designed for use in 923 to 928 MHz license-free ISM
radio band transmission, which is licensed free in the following countries only.:
1. Argentina
2. Canada
3. Chile
4. Costa Rica
5. Dominican
Republic
6. Mexico
7. Peru
8. Puerto Rico
9. United States
10. Uruguay
11. Australia
12. Brazil
13. China
14. Hong Kong
15. Malaysia
16. Singapore
17. Taiwan
18. Thailand
19. Vietnam
Users are strongly encouraged to check with their local agencies on the
license status of this radio band transmission before installing this
instrument.
Any other use, or use not mentioned here, that is incompatible with the technical
specifications is deemed inappropriate. The operator is solely responsible for any
damage arising from such use.
Other prerequisites for appropriate use include complying with:
the instructions, notes and requirements set out in this instruction manual.
all local safety regulations concerning safety at work.

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all information and warnings in the documentation dealing with the
products used together with this pH / ORP Transmitter (housing, sensors,
etc.).
the local environmental and operational conditions.
1.3 Safety Instructions
The Alpha pH 600 RF Transmitter should be installed
and operated only by personnel familiar with the
instrument and who are qualified for such work.
A defective pH 600 RF Transmitter must neither be
installed nor put into service.
The Alpha pH 600 RF Transmitter must only be
operated under the specified operating conditions (see
section 6).
The Alpha pH 600 RF Transmitter must not be repaired
by the customer.
No modifications to the Alpha pH 600 RF Transmitter
are allowed. The 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 disconnect the unit from the power supply and then undo all electrical
connections.
Remove the unit from the wall.
Correct Disposal of the Instrument
When the Alpha pH 600 Transmitter 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 600 RF Transmitter is used for measuring pH or ORP and
temperature values. The pH values can be measured using industrial combination
pH sensors; the ORP values can be measured using industrial ORP sensor; the
temperature values can be measured using 3-wire Pt100 / Pt1000 sensors. The
Transmitter can be used for applications such as water treatment and monitoring,
galvanic-decontamination, chemical processing, food processing, clean or
wastewater control and neutralization processes.
This pH Transmitter has many user-friendly and safety features which include:
Easy to calibrate and set up
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:
Up to 10 Alpha pH 600 Transmitters
Alpha Link 600 Data Acquisition Software (Installation instructions included
separately)
A Wireless RF Transceiver
One pH sensor or ORP sensor with integrated or separate Pt100/Pt1000
temperature sensor per Transmitter
Appropriate measurement cables
An immersion, flow or process assembly
A computer, installed with the Alpha RF Transmitter System Software
Power Adaptor
(9 V DC)
Measurement
Cable
Housing and
Sensors
Wireless
Transceiver
100m
50m
50m
100m
100m
100m

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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
Transmitter.
•Remove the back cover. The connectors are exposed on the back
PCBA as shown in the Figure 1 below.
Connectors:
•J202 – 9V DC power
•J204 - pH electrode & Temperature probe connections (wiring has to
be done in the detachable connector:
1. Pin 1 : pH Sensor
2. Pin 2 : pH Reference
3. Pin 3 : No Connection
4. Pin 4 : No Connection
5. Temp I/P : Pt 100 Compensate
6. Temp Sens : Pt 100 Sense
7. Temp Gnd : Pt 100 GND
8. PMP : Potential Matching Pin
Figure 1: Outer Side of Back PCBA
J204
J202
Pin 1
Pin 2
Pin 3
Pin 4
Temp I/P
Temp Sens
Temp Gnd
PMP

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2.3.2 Switching Between PT100 & PT1000 Temperature Sensors
The Alpha pH 600 transmitter 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 (J201) as described
below.
Remove Back Cover:
Remove screws from the four corners at the back of the pH Transmitter. Remove
the back cover.
Remove Back PCBA:
Remove the screw located center of the back PCBA (Figure 1). Detach the back
PCBA from the Transmitter. Turn over the back PCBA. Locate J201 jumper on the
inner side of the back PCBA as shown in Figure 2 below.
Figure 2: Inner Side of Back PCBA
Set Jum
p
er J201: Set the J201
j
um
p
er to re
q
uired sensor
(
Pt100 or Pt1000
)
t
yp
e
For PT1000
,
short the to
p
two
p
ins
For PT100
,
short the bottom two
p
ins

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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.
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 J204 connector
4. Connect pH reference wire to Pin 2 of J204 connector
Insulation
pH Referenc
Clear sheath
pH Sensing W
Screen
e Wire
ire

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2.3.4 Connecting Temperature Probe
For Automatic Temperature Compensated (ATC) pH readings, a 100ΩPt 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 J204 connector
2. Connect PT100 sense wire to Pin 6 of J204 connector
3. Connect PT100 GND wire to Pin 7 of J204 connector
2-Wire Probe:
1. Short Pin 5 & 6 of J204 connector using a small piece of wire
2. Connect PT100 sense wire to Pin 6 of J204 connector
3. Connect PT100 GND wire to Pin 7 of J204 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 J204 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
2.4.2 Wall Mount
ENT
ESC
PH/ORP RF Transmitter
Alpha pH 600
CAL
11
Pierce through holes at both
sides
2
Cover the catch slots at both
sides with overlays

2.5 Display & Keypad
2.5.1 Display Overview
The Liquid Crystal Display (LCD) of Alpha pH 600 Transmitter has two alpha-
numerical displays (Upper and a Lower).
•Upper display: Measured pH, mV or relative mV value are
displayed when the Transmitter is in normal operation
(measurement) mode.
•Lower display: Measured temperature value is displayed when the
Transmitter is in normal operation (measurement) mode. In pH
Calibration mode, standard pH buffer values are displayed here:
while measured mV values are displayed in the ORP Calibration
mode.
The two displays indicate function names, options & settings in Setup mode. Refer
‘Appendix 2 – Abbreviations Used in LCD’ for more details.
The LCD also consists of various mode indicators, status annunciators and unit of
measurement indicators.
SETUP MEAS CAL
ERR
READY
-8.8.8.8
-8.8.8.
pH
°C
8
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A
TC
pH
R.mV
°F

Mode Indicators
MEAS Measurement mode; blinks in Symmetric mode
(Refer Section 3.1& 5.5 )
SETUP Setup mode (Refer Section 5)
CAL Calibration mode (Refer Section 4)
Status Annunciators
READY Appears when the reading is stable
ATC Appears when Automatic Temperature Compensation (ATC) is
enabled.
Not visible when Manual Temperature Compensation (MTC) is
enabled.
Flashes if the temperature probe is faulty in its ATC mode.
(Refer Section 5.3)
ERR Appears when an error occurs (Eg. wrong key pressed)
Electrode annunciator. Appears when viewing electrode properties
or during calibration error
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Buffer annunciator. Appears in calibration mode
Units of Measurement Indicators
mV Millivolt. Appears in ORP measurement / calibration modes
(Refer Section 3.1, 4.5)
R.mV Relative Millivolt
pH Appears in pH measurement/calibration modes
(Refer Section 3.1,4.3)
ºC Temperature in Celsius (Refer Section 5.3)
ºF Temperature in Fahrenheit (Refer Section 5.3)

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2.5.2 Key Functions
ENT
ESC
PH/ORP RF Transmitter
Alpha pH 600
CAL
Key Description
CAL
Brings directly into the Calibration entry mode. The security code
must be selected to enter the calibration mode or view only mode.
While in pH Measurement mode, press CAL to enter pH
Calibration entry mode.
While in mV Measurement mode, press CAL to enter mV
Calibration entry mode.
ENT
To confirm your calibration values in Calibration mode.
To confirm selections in SETUP mode.
While in MEAS mode, pressing ENT takes you directly to SETUP
entry mode. The security code must be selected to enter the
calibration mode or view only mode.
To scroll through the various submenus
To increment/decrement values or toggle between options
(in the SETUP/CAL modes)
When pressed together, serves as escape function to return to
MEAS mode from any point (CAL or SETUP modes).

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3 OPERATION
3.1 Measurement mode
When the pH Transmitter is powered on, the display shows all the LCD segments
briefly, and then automatically enters into the Measurement mode.
pH
ATC
°C
25.0
MEAS
READY
7.00
The mode indicator ‘MEAS’ at the top of the display indicates that the pH
Transmitter is in Measurement mode; ‘MEAS’ blinks when in Symmetric mode. The
upper alpha-numerical display shows the measured pH or mV value, while the
lower display shows the temperature value. The indicator “pH” or “mV” at the upper
right side of the display indicates the current measurement mode. (Refer Section
5.5 for switching measurement modes)
NOTE: To guarantee accurate readings, the measuring system (the pH
Transmitter and the sensor) must be calibrated regularly.
From measurement mode you can access:
•Calibration mode (by pressing CAL key)
•Setup mode (by pressing ENT key)
For more details, refer section 4for Calibration mode and section 5for Setup
mode.)

3.2 Menu Overview
3.2.1 Alpha pH 600
MEAS
°C
ATC
pH
CAL
pH
SETUP
SETUP
SETUP
SETUP
Calibrat
See Sectio
Offset Set
See Sect
Temperatur
See Sect
Buffer Selectio
See Sectio
ENT
ion
n 4
tings
ion 5.2
e Settings
ion 5.3
n Settings
n 5.4
V
iew Electrode
See Secti
Properties
on 5.6
CAL
ENT
ENT
ENT
ENT
ENT
ENT
ENT
ENT
ENT
ENT
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