Thermo Fisher Scientific pH 600-RF 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

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 Instal lati on .................................................................................................... 9

2.5 Di spla y & Ke y pad ....................................................................................... 10

3 OPERATION 13

3.1 Measurement mode ....................................................................................... 13

3.2 Menu Overview ..............................................................................................14

4 CALIBRATION 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

5 SETUP 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

6 TECHNICAL SPECIFICATIONS 32

7 LIST OF ACCESSORIES 33

7.1 Thermo Scientific ........................................................................................... 33

7.2 Eutech Instruments ........................................................................................ 34

8 TROUBLESHOOTING 35

9 GENERAL 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

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

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.

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

- 1 -

 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.

- 2 -

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.

- 3 -

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

Wireless

Housing and
Sensors

Measurement

Cable

50m

50m

Power Adaptor
(9 V DC)

- 4 -

100m

100m

100m

100m

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

J202

Pin 1

Pin 2

Pin 3

Pin 4

Temp I/P

Temp Sens

Temp Gnd

PMP

J204

Figure 1: Outer Side of Back PCBA

- 5 -

p

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

For PT1000,short the top two pins

For PT100,short the bottom two pins

er J201: Set the J201 jumper to required sensor (Pt100 or Pt1000) type

- 6 -

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 J204 connector

4. Connect pH reference wire to Pin 2 of J204 connector

pH Referenc

Clear sheath

pH Sensing W

Screen

e Wire

ire

- 7 -

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 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.

- 8 -

2.4 Installation

2.4.1 Mechanical Dimensions

CAL

2.4.2 Wall Mount

2

PH/ORP RF Transmitter

Alpha pH 600

ESC

ENT

Cover the catch slots at both
sides with overlays

Pierce through holes at both

11

sides

- 9 -

A

2.5 Display & Keypad

2.5.1 Display Overview

The Liquid Crystal Display (LCD) of Alpha pH 600 Transmitter has two alpha­numerical 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

READY

ERR

-8.8.8.8

-8.8.8.

- 10 -

8

R.mV
pH

°C

pH

TC

°F

Mode Indicators

MEAS

SETUP

CAL

Measurement mode; blinks in Symmetric mode
(Refer Section 3.1& 5.5 )

Setup mode (Refer Section 5)

Calibration mode (Refer Section 4)

Status Annunciators

READY

ATC

Appears when the reading is stable

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

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

pH

Relative Millivolt

Appears in pH measurement/calibration modes
(Refer Section 3.1,4.3)

ºC

ºF

Temperature in Celsius (Refer Section 5.3)

Temperature in Fahrenheit (Refer Section 5.3)

- 11 -

2.5.2 Key Functions

Alpha pH 600

ESC

Key Description

Brings directly into the Calibration entry mode. The security code
must be selected to enter the calibration mode or view only mode.

CAL

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.

To confirm your calibration values in Calibration mode.

To confirm selections in SETUP mode.

ENT

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

When pressed together, serves as escape function to return to

(in the SETUP/CAL modes)

MEAS mode from any point (CAL or SETUP modes).

CAL

PH/ORP RF Transmitter

ENT

- 12 -

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.

MEAS

READY

pH

7.00

°C

25.0

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:

From measurement mode you can access:

For more details, refer section 4 for Calibration mode and section 5 for Setup
mode.)

To guarantee accurate readings, the measuring system (the pH
Transmitter and the sensor) must be calibrated regularly.

• Calibration mode (by pressing CAL key)

• Setup mode (by pressing ENT key)

ATC

- 13 -

V

3.2 Menu Overview

3.2.1 Alpha pH 600

MEAS

CAL

ENT

CAL

pH

ENT

pH

°C

ATC

SETUP

SETUP

SETUP

SETUP

ENT

ENT

ENT

ENT

Buffer Selectio

Calibrat

See Sectio

Offset Set

See Sect

Temperatur

See Sect

iew Electrode

See Secti

See Sectio

ion

n 4

tings

ion 5.2

e Settings

ion 5.3

Properties

on 5.6

n Settings

n 5.4

ENT

ENT

ENT

ENT

ENT

- 14 - - 15 -

4 CALIBRATION MODE

4.1 Preparing the Transmitter & Electrode for Calibration

Before starting calibration, make sure that the pH Transmitter is in appropriate
measurement mode (pH or ORP). When the Transmitter is powered on, it starts up
with the measurement mode last used. For example, if the pH Transmitter is
powered off in ORP measurement mode, it starts up in ORP mode when it is
powered on. (Refer Section 5.5 for switching measurement modes)

Be sure to remove the protective electrode storage bottle or rubber cap of the
electrode before calibration or measurement. If the electrode has been stored dry,
wet the electrode in tap water for 10 minutes before calibrating or taking readings to
saturate the pH electrode surface and minimize drift.

Rinse the electrode in de-ionized water after use, and store in electrode storage
solution. If storage solution is not available, use pH 4.01 or 7.00 buffer solution.

Do not reuse buffer solutions after calibration. Contaminants in the solution can
affect the calibration, and the accuracy of the measurements.

The pH Transmitter features two internationally recognized pH buffer standards.
Select the buffer standard you require in the setup mode. (Refer Section 5.4)
Available buffer options are:

• USA buffers --- pH 4.01, 7.00 and 10.01

• NIST buffers --- pH 4.01, 6.86 and 9.18

4.2 Entering pH/ORP Calibration Mode

While in Measurement mode press the CAL key.

1. The display prompts to enter the calibration security code. Press the ▲ or
▼ key to set the calibration security code to “11”, and then press the ENT
key to confirm the calibration security code.

2. The display shows “CAL pH” and “CAL” indicator appears at the top of
display and after 2 seconds delay it automatically leads to the cali on.

brati

CAL

READY

pH

°C

CAL

ATC

• To exit Calibration mode at any time press ▲ and

▼ keys simultaneously (Escape).

• The calibration is always carried out in the units of

measurement (pH or mV), selected in setup mode

HOLD

ENT

CAL

pH

4.3 pH Calibration

The pH Transmitter is capable of calibration of up to 2 points using USA or NIST pH
buffer standards. All new calibration values will automatically override the existing
calibration data. pH buffer values are referenced to 25

o

C. Ensure the measurement
mode is set to pH. (Refer Section 5.5 for switching measurement modes). All pH
buffer values have window of up to ± 1 pH tolerance during calibration. Calibration
error can be occurred if the measured pH value exceeds this window. If you wish to
abort the pH calibration, press ▲ and ▼ keys simultaneously and the pH
Transmitter reverts to pH measurement mode.

4.3.1 For USA Standard Buffer

Make sure that the pH Transmitter is set to accept USA standard buffer in the Setup
mode. (Refer Section 5.4 for Buffer Selection Settings) The factory default is USA
standard. It is recommended that you perform a 2-point calibration at room
temperature (25

o

C), starting with the first buffer at pH 7.00 followed by any other

buffer value (pH 4.01 or 10.01).

1-Point Calibration:

11 2

HOLD

CAL

ENT

HOLD

CAL

YREAD

3

pH

CAL

HOLD

pH

CAL

mV

ENT

°C

pH

MEAS

4

YREAD

pH

°C

ATC

- 16 -

From pH measurement mode press CAL key to enter calibration mode

11

as described in section 4.2. The LCD shows ‘CAL PH’. Press ENT key to
begin calibration.

Place the electrode in pH 7.00 buffer. Immerse the temperature probe in

2

the buffer solution if ATC mode is enabled. Immerse the potential
matching pin in the buffer if symmetrical mode is enabled. The buffer

annunciator appears in LCD. Lower display shows pH 7.00 (USA
standard buffer). Upper display shows the current uncalibrated pH
reading. Allow the reading to stabilize. LCD shows ‘READY’ annunciator
when the reading is stable. Press CAL key to confirm the reading.

The calibration is completed. The pH Transmitter re-calculates electrode

3

properties based on the calibration. The new slope (in mV) is shown in the
upper display and normalized temperature is shown in lower display.

Press ENT key to exit from the calibration.

The pH Transmitter reverts to pH measurement mode.

4

NOTE:

Refer notes at the end of this section for additional information and
possible error indicators of calibration process

2-Point Calibration:

11

CAL CAL

2 3

READY

ENT ENT ENT ENT

pH

pH

CAL

READY

4

pH

pH

CAL

55

mV

pH

MEAS

READY

pH

°C

ATC

3

CAL

READY

pH

ENT

CAL

pH

From pH measurement mode press CAL key to enter calibration mode

1

1

as described in section 4.2. The LCD shows ‘CAL PH’. Press ENT key to
begin first calibration point.

Place the electrode in pH 7.00 buffer. Immerse the temperature probe in

2

the buffer solution if ATC mode is enabled. Immerse the potential
matching pin in the buffer if symmetrical mode is enabled. The buffer

annunciator

appears in LCD. Lower display shows pH 7.00 (USA
standard buffer). Upper display shows the current uncalibrated pH
reading. Allow the reading to stabilize. LCD shows ‘READY’ annunciator

- 17 -

3

4

55

NOTE:

when the reading is stable. Press ENT key to confirm the reading.

The pH Transmitter moves to the second calibration point. The lower
display shows next standard buffer value (pH 4.01). Use ▲ and ▼ keys
to select your second buffer from one of the preset values: pH 4.01 or

10.01. Remove the electrode from the first buffer, rinse and then immerse
it into the second buffer. Allow the reading to stabilize. LCD shows
‘READY’ annunciator when the reading is stable.

Press ENT key (or CAL key) to confirm the reading.

The calibration is completed. The pH Transmitter re-calculates electrode
properties based on the calibration. The new slope (in mV) is shown in the
upper display and normalized temperature is shown in the lower display.

Press ENT key to exit from the calibration.

The pH Transmitter reverts to pH measurement mode.

• To exit from pH calibration mode without confirming calibration,
press ▲ and ▼ keys together.

• When confirming the buffer measurement, if measured pH value is
not within ±1.00pH from selected buffer value, the electrode

annunciator

blinks and ERR indicator appears in the display.
This error can also occur if non-standard buffers are used or the
electrode has worn out. If this happens, press both ▲and ▼ keys
together to restart the calibration beginning from Step1.

• When calibrating with manual temperature compensation, the
meter automatically changes from the preset ‘process temperature’
to the ‘calibration temperature’. After leaving the calibration mode,
the pH Transmitter reverts back to ‘process temperature’.

4.3.2 For NIST Buffer

Make sure that the pH Transmitter is set to accept NIST standard buffer in the
Setup mode. (Refer Section 5.4 for Buffer Selection Settings) The factory default is
USA standard. It is recommended that you perform 2-point calibration at room
temperature (25

o

C), starting with the first buffer at pH 6.86 followed by any other

buffer value. (pH 4.01 or 9.18)

- 18 -

1-Point Calibration:

141 2

HOLD

CAL

ENT ENT

From pH measurement mode press CAL key to enter calibration mode

11

as described in section 4.2. The LCD shows ‘CAL PH’. Press ENT key to
begin calibration.

Place the electrode in pH 6.86 buffer. Immerse the temperature probe in

2

the buffer solution if ATC mode is enabled. Immerse the potential
matching pin in the buffer if symmetrical mode is enabled. The buffer

annunciator appears in LCD. Lower display shows pH 6.86 (NIST
standard buffer). Upper display shows the current uncalibrated pH
reading. Allow the reading to stabilize. LCD shows ‘READY’ annunciator
when the reading is stable. Press CAL key to confirm the reading.

The calibration is completed. The pH Transmitter re-calculates electrode

3

properties based on the calibration. The new slope (in mV) is shown in the
upper display and normalized temperature is shown in the lower display.

Press ENT key to exit from the calibration.

The pH Transmitter reverts to pH measurement mode.

4

2-Point Calibration:

11

CAL CAL

2 3

READY

ENT ENT ENT

READY
HOLD

CAL

pH

READY

pH

3

pH

CAL

HOLD

pH

CAL

CAL

mV
pH

°C

4

pH

pH

CAL

MEAS

READY

55

mV

pH

MEAS

READY

ENT

pH

°C

ATC

pH

°C

ATC

3

READY

CAL

pH

ENT

CAL

pH

From pH measurement mode press CAL key to enter calibration mode as

11

described in section 4.2. The LCD shows ‘CAL PH’. Press ENT key to
begin first calibration point.

Place the electrode in pH 6.86 buffer. Immerse the temperature probe in

2

the buffer solution if ATC mode is enabled. Immerse the potential matching

- 19 -

3

4

55

NOTE:

pin in the buffer if symmetrical mode is enabled. The buffer annunciator
appears in LCD. Lower display shows pH 6.86 (NIST standard buffer).
Upper display shows the current uncalibrated pH reading. Allow the
reading to stabilize. LCD shows ‘READY’ annunciator when the reading is
stable. Press ENT key to confirm the reading.

The pH Transmitter moves to the second calibration point. The lower
display shows next standard buffer value (pH 4.01). Use ▲ and ▼ keys to
select your second buffer from one of the preset values: pH 4.01 or 9.18.
Remove the electrode from the first buffer, wash and then immerse it into
the second buffer. Allow the reading to stabilize. LCD shows ‘READY’
annunciator when the reading is stable. Press ENT key (or CAL key) to
confirm the reading.

The calibration is completed. The pH Transmitter re-calculates electrode
properties based on the calibration. The new slope (in mV) is shown in the
upper display and normalized temperature is shown in the lower display.

Press ENT key to exit from the calibration.

The pH Transmitter reverts to pH measurement mode.

• To exit from pH calibration mode without confirming calibration,
press ▲ and ▼ keys together

• When confirming the buffer measurement, if the measured pH
value is not within ±1.00pH from selected buffer value, the

electro blinks and ERR indicator appears in the

de annunciator
display. This error can also occur if non-standard buffers are used
or the electrode has worn out. If this happens, press both ▲and ▼
keys together to restart the calibration beginning from Step1

• When calibrating with manual temperature compensation, the
meter automatically changes from the preset process temperature
to the calibration temperature. After leaving the calibration mode,
the pH Transmitter reverts back to process temperature.

- 20 -

4.4 Check Calibration

MEAS

READY

pH

CAL

ENT

CAL

mV

pH

ATC

ENT

pH

1. While in Measurement mode press the CAL key. The display will prompt you to
enter a security code. Leave the security code at “0” (view only mode).

2. Press the ENT key.

The display shows the slope in mV (Main Reading) and the normalized
temperature is shown on the Auxiliary reading of the display.

NOTE:

To exit from any intermediate steps, press ▲ and ▼ keys (Escape)
together. It will return to measurement mode.

4.5 ORP Calibration

If the unit of measurement is in mV, then the calibration is also carried out in mV.

CAL

mV

HOLD

HOLD

CAL

mV

HOLD

CAL

mV

READY

ENTCAL

mV

°C

1. Enter Calibration mode as described in section 4.2. The display shows “CAL
ORP” (for mV calibration) and the “CAL” indicator appears on the display.

2. Place sensor in the solution.

3. Press the ENT key to start calibration. The main display shows the current mV
output of the electrode with offset adjustment and auxiliary display shows the
mV output with out any offset adjustments.

4. Press the ▲ or ▼ key to match the mV value to exact reading.

- 21 - - 22 -

5. Press the ENT key to confirm. The transmitter calculates the correction factor
and returns to the Measurement mode.

4.6 Temperature Calibration

Calibrate temperature probe only if temperature value displayed on the pH
Transmitter is different from that of a calibrated thermometer. Refer to section 5.3
for further information temperature settings.

5 SETUP MODE

5.1 Enter Setup mode

In the Setup mode the transmitter can be configured to the individual requirements.

MEAS

READY

pH

ENT ENT

°C

ATC

“User-setting” Mode

(User can change

parameter settings)

ENT

“User-Setting” Mode

view parameters)

(User can only

1. While in measurement mode, press the ENT key.

2. The display prompts to enter the security code. Set the security code with ▲ or
▼ key to:

“SCD 22” to change parameter settings

“SCD 0” to view parameter settings only (view only mode)

3. Press the ENT key.

NOTE:

To exit from any intermediate steps, press ▲ and ▼ keys (Escape)
together. It will return to measurement mode.

- 23 -

5.2 Electrode Offset Settings

NOTE:

‘Electrode Offset Setting’ is not available when the pH Transmitter is
configured for ORP measurement mode. (Refer Section 5.5 for
switching measurement modes)

In applications where continuous pH measurement is required, it may not be
convenient to remove the electrode for calibration. In such cases, an on-line offset
adjustment is recommended. The pH Transmitter allows you set an offset of up to
± 2.00pH to compensate for errors in the pH electrode.

The pH Transmitter adds or subtracts the offset value from the measured pH value
and displays the corrected value. However, if you need to offset the value beyond
the average offset you would expect in your application type, consider a full
calibration or even electrode replacement.

To Determine the Offset Value:

1. Take a sample from the liquid of pH measurement. Record the pH reading

of the pH transmitter at the time the sample was taken.

2. Measure the pH value of your sample using another calibrated pH meter

having its own electrode (pH tester, hand-held meter or bench meter)

3. The difference between these two readings is the offset

To Adjust the Offset Value:

SETUP

1

ENT

SETUP

READY

2

pH

pH

SETUP

READY

From pH measurement mode press ENT key to enter setup mode as

11

described in section 5.1. The LCD shows the first screen of setup mode
(OFS). Press ENT key to access electrode offset setting (OFS).

The upper display shows the last configured offset value (if any), otherwise

2

zero. The lower display shows currently measured pH reading (including
last configured offset value). Allow the reading to stabilize. LCD shows

- 24 -

3

pH

pH

ENT

A

‘READY’ annunciator when the reading is stable.

Press ▲ or ▼ key to set the upper display to the newly calculated offset

value.

As the upper display value (offset) changes, the pH Transmitter adjust the

3

lower reading automatically to suit the new offset value. Up to ± 2.00 pH
offset is allowed.

Press ENT key to confirm the value. The pH Transmitter reverts to OFS
screen.

NOTE:

To exit from any intermediate steps, press ▲ and ▼ keys (Escape)
together. It will return to measurement mode.

5.3 Temperature Settings

Automatic Temperature Compensation (ATC):

The pH values other than pH 7.00 are affected by temperature. Use ATC feature of
the pH Transmitter to compensate for pH changes when the temperature of the
sample or process liquid fluctuates. Connect a separate temperature probe
(Pt100/pt1000) to the pH Transmitter if an integrated pH/Temperature probe is not
available.

Manual Temperature Compensation (MTC):

Set the pH Transmitter to MTC (disable ATC) when the temperature of sample or
process liquid is constant and a temperature probe is not available. If you disable
ATC, the pH Transmitter allows you to set your process temperature (P.ºC) and
calibration temperature (C.ºC). This allows calibration at a different temperature
other than the process temperature. Example: Setting calibration temperature of
25°C lets you calibrate using standard solutions at 25°C, even if your process
temperature is different from 25°C.

SETUP

1

SETUP

ENT

2

SETUP

ENT

°C

3

SETUP

ENT

°C

4

SETUP

°C

TC

5

ENT

°C

ATC

SETUP

2

SETUP

ENT

°F

3

SETUP

ENT

°C

6

SETUP

ENT

7

ENT

- 25 -

From pH or ORP measurement mode press ENT key to enter setup mode

11

as described in section 5.1. The LCD shows the first screen of setup mode
(OFS). Press ▲ or ▼ key to select Temperature settings screen (SET

ºCF).

Press ENT key to access temperature settings (SET ºCF).

Selecting unit of measurement for temperature: The upper display

2

shows ‘Unit’ and the lower display shows the last configured unit of
measurement for temperature.

Press ▲ or ▼ key to select the desired units for temperature (ºC or ºF).
Press ENT key to confirm your selection.

Enable/disable ATC: The lower display shows ‘AtC’ and the upper display

3

shows the last configured ATC selection (‘On’ or ‘OFF’).

Press ▲ or ▼ key to enable (ATC On) or disable (ATC OFF) automatic
temperature compensation. Press ENT key to confirm your selection.

If ATC enabled (ATC On):

Setting temperature offset: The upper display shows the last configured

4

temperature offset value (if any), otherwise the default is zero. The lower
display shows currently measured temperature reading (including last
configured offset value). LCD shows ‘ATC’ annunciator in lower-right
corner.

Place a thermometer, which is known to be accurate, in your sample or
process liquid. Make sure your temperature probe is placed in the same
liquid. Compare the stabilized temperature reading displayed on the
Transmitter with the thermometer. If there is a difference between the two
readings (offset), you can adjust the reading of the Transmitter. Press ▲
or ▼ key to adjust the lower display to the correct temperature value.

As the lower display value changes, the pH Transmitter adjust the upper

55

display reading automatically to suit the new offset value. Up to ± 10 ºC/ ±
18 ºF offset is allowed.

Press ENT key to confirm the value. The pH Transmitter reverts to SET
ºCF screen.

If ATC disabled (ATC OFF):

Setting process temperature: The lower display shows ‘P.ºC’ and the

6

upper display shows the last configured process temperature. Press ▲ or
▼ key to adjust the upper display to desired process temperature.

Allowable range: –10.0 to 110.0°C / 14.0 to 230°F.

Press ENT key to confirm the process temperature.

- 26 -

Setting calibration temperature: The lower display shows ‘C.ºC’ and the

7

upper display shows the last configured calibration temperature. Press ▲
or ▼ key to adjust the upper display to desired calibration temperature.

Allowable range: –10.0 to 110.0°C / 14.0 to 230°F.

Press ENT key to confirm the calibration temperature. The pH Transmitter
reverts to SET ºCF screen.

NOTE:

Press ▲ or ▼ key to access other setup screens or press ▲ and ▼
key simultaneously (escape) to return to measurement mode.

To exit from any intermediate steps, press ▲ and ▼ keys
simultaneously (escape). The pH Transmitter returns to the first
screen of temperature settings SET ºCF.

5.4 Buffer Selection Settings

NOTE:

The buffer selection setting is only available if the Transmitter is
configured for pH measurement mode.

This allows you to set the pH Transmitter to accept either USA or NIST pH buffer
standard group during pH calibration.

Buffer Group pH Buffer Points

USA pH 4.01, 7.00 & 10.01

NIST pH 4.01, 6.86 & 9.18

SETUP SETUP

ENT

SETUP

- 27 - - 28 -

ENT

ENT

From pH measurement mode press ENT key to enter setup mode as

11

described in section 5.1. The LCD shows the first screen of setup mode
(OFS). Press ▲ or ▼ key to select buffer settings screen (bUFF).

Press ENT key to access buffer settings (bUFF).

Selecting buffer group: The lower display shows the last configured

2

buffer group. Press ▲ or ▼ key to select the required buffer group (‘USA’
or ‘nST’).

Press ENT key to confirm your selection. The pH Transmitter reverts to
bUFF screen.

NOTE:

5.5 Configuration Settings

Configuration settings let you configure the pH Transmitter to different
measurement & operation modes & reset the pH Transmitter to factory defaults.

Asymmetrical Operation Mode (ASY):

This is the default mode of operation of the pH Transmitter, which is suitable for
most applications where sample (or process) liquid is not interfered by adjacent
electrical noise.

Symmetrical Operation Mode (SY):

This is the mode of operation is recommended for applications where sample (or
process) liquid is subjected to high electrical interference and therefore the pH
reading becomes unstable. When the pH Transmitter is set to symmetrical mode,
you should immerse the potential matching pin in the sample (or process) liquid or
use a pH electrode with built-in potential matching pin. The ‘MEAS’ indicator blinks
when the pH Transmitter is set to Symmetric mode.

To exit from any intermediate steps, press ▲ and ▼ keys (Escape)
together. It will return to measurement mode.

SETUP SETUP SETUP

ENT

ENT

SETUP SETUP

ENT

SETUP SETUP

ENT

SETUP SETUP

SETUP

HOLD

Measurement

Mode

NOTE:

To exit from any intermediate steps, press ▲ and ▼ keys (Escape)
together. It will return to measurement mode.

Selecting “pH” or “mV” Mode of Operation

1. Press ENT key and use ▲ or ▼ keys to scroll till LCD displays ‘CONF’
(Configuration). Press ENT again.

2. LCD displays ‘PH’. meter is set to operate as a pH meter. Use ▲ or ▼ keys to
change from ‘PH’ to ‘ORP’, if this Transmitter is to operate as an ORP
Transmitter.

3. Press the ENT key to accept selection.

4. Press S and T keys together to return to the CONF main menu.

Selecting “Asymmetrical” or “Symmetrical” Mode of Operation

In some applications, there may be some electrical interference in the sample,
where the electrode is installed. The sensitive electrode picks up the signal and the
effect is displayed on the LCD.

If the electrical interference is from an AC source, the reading on the LCD fluctuates
wildly. If the source is DC, then readings will be stable, but at a wrong value.

- 29 - - 30 -

In such cases, switch the Transmitter to the Symmetrical mode as below:

1. Press ENT key and use ▲ or ▼ keys to scroll till LCD displays ‘CONF’
(Configuration). Press ENT again.

2. LCD displays “ASY” (asymmetrical operation). Use ▲ or ▼ keys to select for
‘”SY” (symmetrical mode of operation). Press ENT key again.

3. Press S and T keys together to return to the CONF main mode.

Selecting Back Light ON or OFF Operation

1. Press ENT key and use ▲ or ▼ keys to scroll till LCD displays ‘CONF’
(Configuration). Press ENT again.

2. Press ENT key until the LCD displays either “LitE ON” or “LitE OFF”

3. LCD displays “LitE ON” (Back light ON). Use ▲ or ▼ keys to select for “LitE
OFF” (back light OFF).

4. Press ENT key again.

5. Press S and T keys together to return to the CONF main mode.

Reset the User Calibration parameters or Setup parameters

1. Press ENT key and use ▲ or ▼ keys to scroll till LCD displays ‘CONF’
(Configuration). Press ENT again.

2. Press ENT key until the LCD displays “no DEF”.

3. Not to reset any of the setup or user calibration parameters select “nO DEF”
and press ENT key. It will lead to the CONF main menu.

4. To reset the user calibration parameters, select “CAL DEF” and press ENT key.
It will reset the User calibration parameters and lead to measurement mode.

5. To reset the user calibration parameters and meter setup parameters to default
values, select “FAC DEF” and press ENT key. It will reset the user calibration
parameters and meter setup parameters and lead to measurement mode.

5.6 Viewing Electrode Properties

Each time you calibrate your pH electrode, the pH Transmitter re-calculates slope &
offset of the electrode and shown in the LCD at the end of calibration. The setup
mode allows you to view slope & offset values at any time.

NOTE:

When the measurement mode is set to ORP, only the offset value of
the electrode is displayed.

11

2

NOTE:

SETUP

HOLD

1

ENT

SETUP

measurement mode

For pH

SETUP

measurement mode

For ORP

2

mV

ENT

pH

2

mV

ENT

To view the calibration and parameter, press CAL key, then ENT key.

Electrode status: T de annunciator

pH measurement mode, the slope (in mV) is shown in the upper display

he electro appears in the LCD. For

and normalized temperature is shown in the lower display.

For ORP measurement mode, the offset value (in mV) of the electrode is
shown in the upper display.

Press ENT key to quit from electrode properties screen.

To exit from any intermediate steps, press ▲ and ▼ keys (Escape)
together. It will return to measurement mode.

- 31 -

6 TECHNICAL SPECIFICATIONS

General Specification
(a) pH

(b) mV

(c) Temperature

Calibration Point
(a) pH

(c) Temperature

Input / Output

Display

Electrical data and Connections

RF Communication Specifications

Others

pH Measuring Range 0.00 to 14.00 pH
Resolution 0.01 pH
Accuracy ± 0.01 pH

mV Measuring Range -1000 to 1000 mV
Resolution 1 mV
Accuracy ± 1 mV

Temperature measuring range -10.0 to +110.0 oC or +14.0 to +230.0 oF
Resolution 0.1
Relative accuracy 0.5 oC or 1.0 oF
Sensor 3 wire / 2 wire – Pt100 or Pt1000 (Jumper Selectable)
Compensation Automatic or Manual

Number of calibration points
Number of calibration buffers

Offset Adjustment

Input Asymmetrical / Symmetrical
Output UART Serial Comm. Output for the RF RX/TX Board:

LCD UV coat, Custom Dual segments display with symbols

Back light On/Off selectable

pH/mV Input 8-pin Screw Terminal (3.5mm pitch)
Temperature Input 8-pin Screw Terminal (3.5mm pitch)
Power Phone Jack DC Socket

Transmission Method TDMA, FSK Modulation
Frequency 923 to 928 MHZ, ISM Band Region 2
Air Baud Rate 16 Kbit/S
Range Single Unit 100 m (328 ft) (in open air)
RF Power +5 dB
Antenna Internal diversity antenna
Network Model Mesh
Operating Temperature -10 to 65 °C

Power Input +9 V DC
Pollution Degree 2
Dimensions (W x H x D) 96mm x 96mm x 66 mm
Weight (Estimated) 210g
Ambient Temp. operating range 0 to 40 oC
Maximum Relative Humidity 80% up to 31 oC decreasing linearly to 50% at 40oC
Ingress Protection IP65

o

C or 0.1 oF

1 or 2 points
USA: 4.01, 7.00, 10.01
NIST: 4.01, 6.86, 9.18

±10 ˚C/ ±18 ˚F

for Status information.

Protocol : 8-N-1

Data rate: 9,600 kbps

- 32 -

7 LIST OF ACCESSORIES

7.1 Thermo Scientific

pH Transmitter Replacement and Accessories

Item Description

Alpha pH 600 wall-mount pH/ORP RF transmitter TSPHCTP0600

Wireless (RF) receiver and application software TSRCV0600S

Ryton®-body pH combi electrode with Pt100 RTD (ATC) & 20 m cable with BNC &
PMP EC100GTSO20B

Ryton®-body pH combi electrode with Pt100 RTD (ATC) & 10 m cable with BNC &
PMP EC100GTSO10B

Ryton®-body pH combi electrode with Pt100 RTD (ATC) & 5 m cable with BNC &
PMP EC100GTSO05B

Ryton®-body pH combi electrode with 5 m cable with BNC & connector for PMP
(no ATC) ECARGTSO05B

Ryton®-body pH combi electrode with 5 m cable with BNC connector (no ATC);
measures up to 110 ºC ECARHTTSO05B

Ryton®-body pH combi electrode without ATC & 5 m cable with BNC connector.
HF resistant glass ECARTSOHF05B

Ryton®-body pH combi electrode with 5 m cable with BNC connector (no ATC) ECARTSO05B

Ryton®-body ORP gold electrode with 5 m cable with BNC & PMP (no ATC) ECHTAUTSO05B

Ryton®-body ORP platinum electrode with 5 m cable with BNC & PMP (no ATC) ECHTPTTSO05B

Order Code

Calibration Solutions

Item Description

pH 4.01 buffer solution, 480 ml bottle EC-BU-4BT

pH 7.00 buffer solution, 480 ml bottle EC-BU-7BT

pH 10.01 buffer solution, 480 ml bottle EC-BU-10BT

pH 4.01 buffer sachets, 20 ml x 20 pcs. EC-BU-4BS

pH 7.00 buffer sachets, 20 ml x 20 pcs. EC-BU-7BS

pH 10.01 buffer sachets, 20 ml x 20 pcs. EC-BU-10BS

pH De-ionized water rinse sachets, 20 ml x 20 pcs EC-RIN-WT

pH sachet assortment pack – 5 each of pH 4.01, pH 7.00, pH 10.01 and de-ionized
water sachets per box

Protein cleaning solution for pH electrode EC-DPC-BT

Storage solution for pH electrode EC-RE-005

Order Code

EC-AST-PK

NOTE:

• pH buffer solutions (480 ml bottle) have ±0.01 pH accuracy at 25 °C

• pH buffer sachets are individually sealed, single use pouch

containing 20 ml of fresh, contamination free calibration solution

• pH buffer sachets have ±0.01 pH accuracy at 25°C

- 33 -

7.2 Eutech Instruments

pH Transmitter Replacement and Accessories

Item Description

Alpha pH 600 transmitter 56706-00

Wireless RF receiver with application software 56706-50

pH/Temp electrode with PMPO and 10-ft cable 35807-20

Platinium ORP electrode with 10-ft cable 35801-21

BNC to spade lug adapter 05994-90

Order Code

Calibration Solutions

Item Description

pH 4.01 calibration buffer, 500 ml 00654-00

pH 7.01 calibration buffer, 500 ml 00654-04

pH 10.01 calibration buffer, 500 ml 00654-08

pH 4.01 calibration buffer solution pouches, 20/box 35653-01

pH 7.00 calibration buffer solution pouches, 20/box 35653-02

pH 10.00 calibration buffer solution pouches, 20/box 35653-03

pH De-ionized water rinse sachets, 20 ml x 20 pcs 35653-00

Assortment pack – 5 each of pH 4.01, pH 7.00 and pH 10.00 solution pouches. 35653-04

Electrode cleaning solution 00653-06

Electrode storage solution 00653-04

Order Code

NOTE: To order Eutech accessories, contact the nearest Oakton distributor

- 34 -

8 TROUBLESHOOTING

Problem Solution

Power on, but no display a) Loose connections

Unstable pH reading a) Dirty electrode

Oscillating temperature
readings

Slow response a) Dirty / Oily electrode a) Clean electrode

Blinking ATC a) No temperature probe

Blinking
electrode
annunciator

Or (pH) a) pH electrode is not

Or (Temperature) a) Temperature probe is

Cause

a) Ensure cables make good

b) Incorrect output voltage

of the power adaptor

b) Electrical noise

interference

a) Electrical noise

interference

connection during ATC
mode

a) Error in calibration a) Ensure calibration standard

connected

not connected when
ATC enabled

contact

b) Use an power adaptor with

specified output voltage

a) Clean electrode and

recalibrate
b) Switch to Symmetric mode

a) Ensure shield wire is

properly connected to pin 7

a) Ensure temperature sensing

cable makes good contact

solution is not

contaminated. Ensure

electrode is clean.

a) Ensure electrode makes

good contact with

Transmitter

a) Ensure electrode makes

good contact with

Transmitter

- 35 -

9 GENERAL INFORMATION

9.1 Warranty

This transmitter is supplied with a one-year warranty against significant deviations
in material and workmanship from date of purchase and a six-month warranty for
probe. Each instrument will have a warranty card with a specific serial number. The
warranty card must be endorsed by the Authorized Distributor at the point of sale.

If repair or adjustment is necessary and has not been the result of abuse or misuse
within the designated period, please return – freight pre-paid – and correction will
be made without charge. Thermo Scientific/ Eutech will determine if the product
problem is due to deviations or customer misuse.

Out of warranty products will be repaired on a charged basis.

Exclusions

The warranty on your instrument shall not apply to defects resulting from:

• Improper or inadequate maintenance by customer

• Unauthorized modification or misuse

• Operation outside of the environment specifications of the products

9.2 Return of Goods

Authorization must be obtained from our Customer Service Department or
authorized distributor before returning items for any reason. A “Return Goods
Authorization” (RGA) form is available through our authorized distributor. Please
include data regarding the reason the items are to be returned. For your protection,
items must be carefully packed to prevent damage in shipment and insured against
possible damage or loss. Thermo Scientific will not be responsible for damage
resulting from careless or insufficient packing. A restocking charge will be made on
all unauthorized returns.

NOTE: Thermo Scientific reserves the right to make improvements in design,
construction, and appearance of products without notice.

- 36 -

10 APPENDICES

10.1 Appendix 1– pH Buffer Values at Various Temperatures

The following table shows the various pH values at different temperature of the
solution during calibration.

3 pH 4.01 pH 6.86 pH 7.00 pH 9.18 pH 10.01

0 4.01 6.98 7.12 9.47 10.32

5 4.01 6.95 7.09 9.38 10.25

10 4.00 6.92 7.06 9.32 10.18

15 4.00 6.90 7.04 9.27 10.12

20 4.00 6.88 7.02 9.22 10.06

25 4.01 6.86 7.00 9.18 10.01

30 4.01 6.85 6.99 9.14 9.97

35 4.02 6.84 6.98 9.10 9.93

40 4.03 6.84 6.97 9.07 9.89

45 4.04 6.83 6.97 9.04 9.86

50 4.06 6.83 6.97 9.01 9.83

55 4.08 6.83 6.97 8.99 9.81

60 4.10 6.84 6.98 8.96 9.79

70 4.12 6.85 6.99 8.92 9.76

80 4.16 6.86 7.00 8.89 9.74

90 4.20 6.88 7.02 8.85 9.73

- 37 -

10.2 Appendix 2 – Abbreviations Used in LCD

Abbreviation Description

ASy Asymmetrical mode

AtC

bUFF Buffer

CAL Calibration

C.ºC Calibration temperature

CONF Configuration

dEF Default values

FCt Factory (defaults)

OFS Offset

Or Reading is over range

Orn Out of range

OrP Oxidation Reduction Potential

P.ºC Process temperature

PH pH

Set Setting

Sy Symmetrical mode

tyP Type

Ur Reading is under range

Automatic Temperature Compensation

- 38 -

Thermo Scientific
Water Analysis Instruments

North America 166 Cummings Center

Beverly, MA 01915 USA
Toll Free: 1-800-225-1480
Tel: [phone]
Dom. Fax: [phone]
Int’l Fax: [phone]

www.thermo.com/process

Europe

Denmark House, Angel Drove
Ely, Cambridgeshire
CB7 4ET, UK
Tel: [phone]
Fax: [phone]

Asia Pacific

Blk 55, Ayer Rajah Crescent,
#04-16/24 Singapore 139949
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]

Oakton Instruments

P.O Box 5136,
Vernon Hills, IL 60061, USA
Tel (in U.S.): 888-462-5866
Tel (outside U.S.): 1-847-549-7600
Fax: [phone]
E-mail: [e-mail]
Web-site: http://

www.4oakton.com

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