EUTECH INSTRUMENTS CYBERSCAN PHION 510 PHION METER, pH 510, Ion 510 Instruction Manual

Instruction Manual

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pH/Ion 510

Bench pH/Ion/mV Meter

Technol o

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68X090811

Rev. 6 08/04

PREFACE

Thank you for choosing the pH 510 pH/mV/Temperature or Ion 510 Ion/pH/mV/Temperature bench
meter.

The instruction manual functions in two ways: firstly as a step-by-step guide to help you operate the
510 series meter. Secondly, it serves as a handy reference guide.

The instruction manual is written to cover as many anticipated applications of the pH/Ion 510 Bench
meter series as possible. If there are doubts in the use of the instrument, do not hesitate to contact
the nearest Authorized Distributor.

Eutech Instruments/ Oakton Instruments cannot accept any responsibility for damage or
malfunction to the meter caused by 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 the part of Eutech Instruments Pte Ltd/ Oakton
Instruments.

Note: Eutech Instruments Pte Ltd/ Oakton Instruments reserves the right to make improvements in
design, construction, and appearance of our products without notice.

Copyright © 2002 All rights reserved.
Eutech Instruments Pte Ltd
Oakton Instruments

Rev 6 08/04

TABLE OF CONTENTS

1 INTRODUCTION........................................................................................................................... 1

1.1 Introducing the 510 Bench Series ...............................................................................................................1

1.2 Custom LCD .......................................................................................... ......................................................1

1.3 Keypad................................................................................ .........................................................................2

1.4 Rear Instrument Panel.................................................................................................................................3

2 STARTING UP .............................................................................................................................. 4

2.1 Connecting the Sensor Electrode........................................................................... .....................................4

2.2 Connecting the Temperature Probe............................................................................................................4

2.3 Connecting the A/C Adapter.................................................... ....................................................................4

2.4 Connecting the Chart Recorder...................................................................................................................4

2.5 Connecting the Electrode Holder (Optional)............................. ... .. .. ..... .. ... .. ..... .. ... .. .. ..... .. ... .. ..... .. .. .. ..........5

2.6 Steps Prior to Calibration....................................................................... ......................................................6

3 CALIBRATION.............................. ................................................................................................ 6

3.1 pH Calibration.................................................. ............................................................................................6

3.2 Ion Concentration Calibration (For Ion 510 only)................. .......... ..................... ........................................9

3.3 mV Calibration .................................................................. .........................................................................11

3.4 Temperature Calibration.................................................................................................................. ..........12

4 MEASUREMENT..........................................................................................................................13

4.1 Automatic Temperature Compensation (ATC)............................... ..... .. .. ... .. ..... .. ... .. ..... .. .. ... .... ... .. .. ... .......13

4.2 Manual Temperature Compensation (MTC) .............................................................................................13

4.3 Taking Measurements...............................................................................................................................14

4.4 HOLD Function...................................................................... ....................................................................15

4.5 Storing and Recalling Data from Memory.................................................. .. .. ..... .. ... .. ... .... ... .. .. ..... .. .. ........15

5 SETUP FUNCTIONS....................................................................................................................17

5.1 P1.0 Clear Memory...................................................................................................................................17

5.2 P2.0 Viewing Electrode Diagnosis ............................................... ...........................................................18

5.3 P3.0 Selecting pH Buffer Standard............................... .. .. ..... .. ... .. ..... .. .. ... ..... .. .. ... .... ... .. .. ..... .. ... . .............19

5.4 P4.0 Meter Reset......................................................................................................................................19

6 pH Electrode Maintenance............................................... ..........................................................20

6.1 Storage ................................................................................................................................. .....................20

6.2 After Use................................................................................................ ....................................................20

6.3 Electrode Cleaning ....................................................................................................................................21

6.4 pH Electrode Rejuvenation..................... ...................................................................................................22

7 TROUBLESHOOTING GUIDE.....................................................................................................23

7.1 Error Messages ................................................ .........................................................................................23

7.2 Troubleshooting................................................ .................................................................................. .......24

8 ADDITIONAL INFORMATION .....................................................................................................25

8.1 pH and Temperature .................................................................................................................................25

8.2 Use of Standard pH Buffers ......................................................................................................................25

8.3 Standard pH Buffers..................................................................................................................................25

8.4 List of Accessories.....................................................................................................................................26

8.5 Specifications............................................................................. ................................................................28

9 WARRANTY....... .................................................................... ......................................................29

10 RETURN OF ITEMS........................................................... ..........................................................29

Instruction Manual pH 510/ Ion 510

1 INTRODUCTION

1.1 Introducing the 510 Bench Series

The pH 510 and Ion 510 bench meters are microprocessor-based which incorporates new ASIC (Application
Specific Integrated Circuit). It is desig ned with convenience in mind, and offers many advanc ed user-friendly
features. The meters are capable of storing and recalling up to 50 data sets in its n on-volatile memory. In
addition, as a space saver, an optional swivel electrode holder can be attached at the either side of bench
meter for resting the electrodes and probes during operation.

The pH 510 meter is capable of m easuring pH/ORP with T emperature; while the Ion 510 meter measures Ion
Concentration/pH/ORP with temperature. It is equipped with a large customized LCD (Liquid Crystal Display)
with simultaneous display of the measured values for easy reading. It is most ideal for routine pH/Ion
Concentration measurement in indoor applications.

1.2 Custom LCD

The 510 meter is characterized by a large c ustom dual LCD. The displa y has mode annunciators for p H, mV,
ppm and temperature readings. The secondar y (lower) display shows the temperature reading simul taneously
with the primary (upper) display that shows the measured values of pH, ppm or mV. Special annunciators such
as units of measure, error message, graphical icons and modes of operation are arranged around both primary
and secondary display to give you a comprehensive yet uncluttered display.

CAL

SETUP – The meter

is in SETUP mod e.

MEAS

- The instrument is in

the measurement mode.

- The instrument is in

the calibrati on mode

.

MEM - Data is stored

into memo r y

- The measured

READY

value has stabilized.

HOLD - The displayed

value has been frozen.

ERR

- An error in

operation has occured.

Buffer - Prompts user

to select buffer during
calibration, or indicates
buffer error when
flashing together with
the ERR annunciator.

SETUP

MEAS

READY
HOLD

ELECTRODE

electrode error when it
appears with ERR.

- indicates

ERR

CAL

MEM

R.mV

pH

ppm

C F
pH

ATC

pH –Indicates buffe r

values of respective
USA or NIST buffer
option set.

Shows the
respective mode
of operation.

ATC (Automatic
Temperature
Compensation)

activated.
displayed, temperature
probe is not connected.
In this case the Manual
Temperature
Compensa tion is
activated.

If ATC is not

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Instruction Manual pH 510/ Ion 510

1.3 Keypad

A large splash proof membrane keypad with tac tile feedback makes meter easy to use. Names an d symbols
describe the function button control s.

Key Measurement Mode Calibration / Setup Mode

ON/OFF

CAL/MEAS

MODE

MI/¿

MR/À

HOLD

ENTER Enter functions in the memory mode.

Powers the meter ON/OFF. When the meter is
switched on, it automatically starts in the last
mode of operation.

Toggles between the measurement and
calibration modes of the meter. In SETUP
mode, pressing CAL/MEAS key returns to the
measurement mode.

Toggles between the different measurement
modes available pH/Temperature/mV/Ion. (Ion
mode only applies with th e ION 510.)

MI inputs measurements into memory and
scrolls through memory values.

MR recalls measurements from memory and
scrolls through memory values.

Freezes a measurement on the display. Press
again to get current readings.

Switches from pH to Temperature in pH
calibration mode

¿ scrolls values in mV calibration mode
and selects temperature values and ion
options in calibration mode. Scrolls to
next program in the SETUP mode.

À scrolls values in mV calibration mode
and selects temperature values and ion
options in calibration Scrolls to next
program in the SETUP mode.

Confirms and enters the value selected
for calibration.

~

~

~

You can also configure functions like Me ter Reset, Memory Clear and Se lection of pH Buffer Standard via the
keypad. Please refer to Section 5 for more information on the above functions.

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Instruction Manual pH 510/ Ion 510

1.4 Rear Instrument Panel

This 510 series meter provides a complete set of connectors for the various accessories commonly used.
Listed in the table are the details of the connection s that you can make.

Rear View of Meter

Connection Function

ATC

INPUT

REF

REC For connection to strip chart recorders. Use subminiature plug with positive tip.

GND For connection to the ground earth jack (standard tip connectors).

DC For connection for the AC/DC power adapter

For phono jack connection from the temperature probe for Automatic Temperature
compensation. The pro be should be a 30KΩ thermistor type.

For connection to sensor electrodes with BNC type connectors. The meter accepts any pH,
ORP or ISE with BNC connector. Always ensure that the connector is clean and dry.

For connection to pin type reference electrode normally used with half cell (mono) type pH
electrodes or ISEs.

3

Instruction Manual pH 510/ Ion 510

2 STARTING UP

Connect the accessory connectors at the rear of the instrument panel. During operation, it is important that
water does not get onto the BNC connector. Also avoid touching the connector with soiled or wet hands.

2.1 Connecting the Sensor Electrode

Slide the electrode connector of the electrode over the socket of the meter’s BNC conn ector marked ‘INPUT’.
The meter can accept any standard pH, ORP, or Ion Selectiv e Electrode with a BNC conn ector. Align the slot
of the electrode connector with the posts of the socket. Rotate the connector clockwise until it locks. For
separate reference e lectrodes, push the electrode pin into jack marked ‘REF’.

2.2 Connecting the Temperature Probe

Insert the temperature probe (provided) into the connector marked ‘ATC’.

2.3 Connecting the A/C Adapter

Slide in the adapter jack of the A/C adapter into the back panel marked ‘DC’ un til it is fir ml y seated. Ensure that
the power is switched off before installation and the correct vo ltage adapter is used.

2.4 Connecting the Chart Recorder

You can connect chart recorders or external output devic es for contin uous printo ut. Plug in th e input con nector
and ground pin of the chart recorder into the ports marked ‘REC’ an d ‘GND’ respectively.

Sensor electrode

Temp. probe

Separate ref. electrode

Chart recorder

Ground

AC/DC Adapter

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Instruction Manual pH 510/ Ion 510

2.5 Connecting the Electrode Holder (Optional)

The integral electrode holder serves as a handy holder
for mounting a few pH/Ion electrodes or a temperature
probe during measurement or when idle.

This meter’s base plate has a side metal bar to which
you can attach an integral swivel electrode holder.
You can mount the electrode holder on either right or
left side of the meter.

To position the electrode arm:

Use a Phillips screwdriver to remove the screw holdin g
the electrode holder. Slid e the side metal bar until the
second screw slot lines up with the original screw
hole. Use the screw removed earlier to secure the
electrode holder into position.

NOTE: The side metal bar is reversible. If desired,
remove screw holding electrode holder base and slide
out of brackets, Slide base into brackets on opposite
side and tighten screw.

Bottom of Meter

Body of
Electrode
Holder

Side Metal
Bar

Base of
Electrode
Holder

To install the electrode arm to the meter:

To mount the electrode arm into the metal rod on
the side bar, align the slot with the metal ro d and
base of electrode arm. Push it downwards until it
fully sits into position. Avoid using excessive force
when fixing or removing. The electrode arm is
ready for use.

NOTE: Move the base of the electrode holder if
you wish to swing the electrode holder about. To
prevent the meter from toppling over causing
accidental spills, DO NO T s wing the body of the
electrode holder.

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Instruction Manual pH 510/ Ion 510

2.6 Steps Prior to Calibration

2.6.1 Switching ‘ON’ and ‘OFF’ the meter

Press ON key to switch meter on. All the LCD segments will display momentaril y for a few seconds and the
LCD then switches to the last measurement mode. To switch meter off, press OFF key.

2.6.2 Selecting Measurement Mode

The measurement modes available for the pH 510 meter are pH, mV (for ORP) and Te mperat ure , while the Ion
510 meter has Ion, pH, mV and Temperature measur ement modes. Select the correct mode of operation b y
pressing the MODE key, and each press takes you to ne xt measurement mode. When selecting a particular
parameter the respective mode annuncia tor displays at the right hand side of primary displa y; these include
[pH] for pH, [

o

C] for Temperature, [ ppm] for Ion Concentration and [mV] for Millivolt.

2.6.3 Meter Reset

On first use, it is not necessary to reset meter before calibration as it has been factory-calibrated. However if
you wish to reset the meter to factory default refer to Section 5.4.

NOTE: Re-calibration of meter is required before measurement after the meter is reset. Likewise if you wish to
prepare a new set of measurements , you may reset all th e last calibrated pH values simult aneously for added
convenience. Caution: All calibration values and memory data will be erased upon activation. Re-

calibration is required.

2.6.4 Selecting pH Buffer Standard

The meter is capable of calibrating based on eit her USA or NIST pH buffer standar ds. Please refer to Section

5.3 P3.0 for details on how to change the USA buf fer standard to the NIST standard o n the meter itself. Refer
to Section 8.4.1 for more details on pH buffer standards available.

NOTE: Remove protective rubber cap or storage bottle (if any) from the electrode before proceeding with
measurement or calibration. Take care not to exert too much force as this may cause damage to the electrode.
Whenever the electrode is not in use, put it into storage bottle or protect the electrode wit h the rubber cap
provided. Refer to the Section 6 on Probe Maintenance for more details.

3 CALIBRATION

3.1 pH Calibration

The 510 series bench meter is capable of multi-point calibration (up to 3 points) for high accuracy across the
measurement range. The 3-point calibration offers flexibility of calibrating using either USA or NIST buffer
standards with their 3 i nternationally accepted calibration points namely:

For ATC measurements, attach the temperature probe to the meter. The ATC mode annunciator shows on the
display. Insert the probe into the soluti on to be measur ed so tha t the sample temperat ure can be r ecorded and
pH readings automatically tempera ture co mpensate d. If ma nual tem perature co mpensa tion is pre ferred, do not
plug a temperature probe into the meter.

DO NOT REUSE SOLUTIONS AFTER CALIBRATION. Contaminants in the solution can affect the calibration,
and eventually the accuracy of the measurements.

USA standard buffer options: pH 4.01, pH 7.00 and pH 10.01
NIST standard buffer options: pH 4.01, pH 6.86 and pH 9.18.

6

Instruction Manual pH 510/ Ion 510

All new calibrations will override existing s tored calibration data at thes e calibration points. I t is recommended
that you perform at least a 2-point calibration using buffers that bracket (one above and one below) the
expected sample range, sta rting with pH 7 buffer first. You can perform a 1-point calibration, but make sure that
the buffer value is close to the sa mple value you are measuring. Select a p H 4, 7 or 10 buffer in sachets or
bottles from standard buffer solutions.

1. Press ON/OFF key. All the LCD segments will be displayed
momentarily. The LCD switches to pH measurement mode. If
necessary press MODE key to select pH mode.

NOTE: The meter starts in the same measurement mode that it
was switched off.

2. The customized LCD display will indicate the following:

Display Remarks
MEAS Measurement mode is selected
pH Unit of measurement

o

C Measured temperature reading
ATC Automatic Temperature Compensati on
(If temperature probe or “All-in-One” probe is

connected)”

3. Rinse the pH electrode well with d eionized water or rins e solutio n.
If using the ATC function with a separate temperature probe,
thoroughly rinse the temperature probe as well. (Do not wipe the

electrode or the temperature probe as this may cause a build­up of electrostatic charge and will create calibration and
measurement instability!).

One Point Calibration

4. Select the first pH buffer, say pH 7.00 buffer and pour som e into a
clean container.

5. Dip both probes into the standard calibration buffer. The end of
the probe must be completely immersed into the buffer. Stir the
probes gently to create a homogenous solution.

6. Press CAL/MEAS key to enter the pH calibration mode. The
annunciator [CAL] appears on top of the LCD to indicate the
meter is in pH calibration mode. The upper display will show the
measured reading while the lower display indicates appropriate
pH standard buffer solution being used.

Figure 1: 1st-point calibration

NOTE: The meter automatically recognizes the buffers in the
buffer standard you have set in the SET UP mo de, i.e. eith er USA
(pH 4.01, 7.00 or 10.01) o r NIST (pH 4.01, 6.86 or 9.18) buffers.

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Instruction Manual pH 510/ Ion 510

Fig

CAL

pH

ERR

pH

7.00

ure 2: Calibration error

CAL

READY

pH

4.05

pH

4.01

Figure 3: 2nd-point calibration

CAL

pH

pH

10.01

Figure 4: 3rd- point calibration

HINT: If the selected
buffer value is not within
the accepted window (see
below) from the measured
value: the electrode and
buffer icon blink and ERR
annunciator appears next
to the secondary display.
(See Figure 2 above)
Press CAL/MEAS key to
exit the ERR condition.

Window of Accepted
Values:­USA 4.01 ±1.00

7.00 ±1.50

10.01 ±1.00

−−−−−−−−−−−−−−−−−−−−
NIST 4.01 ±1.00

6.86 ±1.25

9.18 ±1.00

7. Wait for the measured pH value to stabilize (when th e [READY]
indicator displays in the left-hand corner).

NOTE

If the upper measured display is not within the buffer acceptable
window (refer to Hint below) an error message and the electrode
icon flash upon pressing the ENTER key. Refer to Section 7,
Troubleshooting Guide. Check electrode condition and recalibrate.
Press CAL/MEAS key to exit calibration and resume to the
measurement mode.

8. Press the ENTER key. The upper display flashes the ca libration
value momentarily. The calibration poi nt is successfully stored
in the meter.

9. If you are performing a one-point calibration, press CAL/MEAS
key to return to the measurement mode and start taking pH
readings (see Figure 1).

NOTE
To exit from pH calibration mode without confirming calibration, DO

NOT press ENTER key in step 9. Press the CAL/MEAS key instead.

Two to Third Point Calibration

10. If you are per forming a multi-point calibration (i. e. second-point
or more) go to step 11.

11. Rinse the probes with dei onized water or rinse so lution to av oid
cross contamination, and place them in the next pH buffer, say
pH 4.01 buffer. The meter automatically switches to the next pH
buffer solution selected in the lower display

12. Wait for the measured pH value to stabil ize (when the [ READY]
indicator displays in the left-h an d co rne r). (s ee Figure 3 ).

13. Press the ENTER key. The upper display flashes the calibrated
value. The calibration point is now stored in the meter.

14. If you are performing a two-point calibration, then press the
CAL/MEAS key to return to the measurement mode and start
taking pH readings.

15. If you are performing a three-point calibration go to step 16.

16. Rinse the probes with deionized water or rinse solution, and
place them in the next pH buffer, say pH 10.01 buffer. The
meter automatically switches to the next pH buffer solution
selected in the lower display.

17. Wai t for the measured pH value to stabilize. (For the third point
calibration, the [READY] indicator will not be displayed.

18. Press the ENTER key once the value has been noted to be
stable. The upper display flashes the calibration value. The
calibration point is now stored in the meter. The meter
automatically returns to the pH measurement mode after a

-

8

Instruction Manual pH 510/ Ion 510

3.2 Ion Concentration Calibration (For Ion 510 only)

The Ion 510 meter is capable of up to 3-point ion calibration (minimum 2 points) with choice of 4 options to
ensure accuracy across the entire measuremen t range. Note that the ion meas urement mode acce pts input of
only

± 500 mV. Ion calibration options include 0.10, 1.0, 10.0 or 100.0 ppm. All calibration should be at least one

decade apart from each other. For exampl e you may perform 3 point calibration to 0.10, 1.0 and 1 0.0, or 2­point calibration to 10.0 and 100.0. If 1-point calibration is performed a n error message “Er2” is displayed. If
any of calibration points are not within 1 decade, an error message “Er4” will be displayed at the end of
calibration process.

Calibration values are successfully stored if the ISE slope is within the specified tolerance of 15mV/decade
(minimum) and 90mV/decade (maximum), other wise an error message “Er3” is displayed (see Figure 7). The
calibration values are not stored into the meter’s built-in memory if any error message appears after each
calibration process. Re-calibration is necessary as calibration is unsuccessfully attempted in this instance.
Check that your ISE and standard solutions are in good working conditions.

Ensure that you use new or fresh stan dar d s oluti ons d uring cal ibr ation. Do no t reus e io n s tandar d s olu tion as it
may be contaminated and affect the calibration and accuracy of measurements. Always store standard
solutions in a dry, cool environment if possible. Before us e, remove plastic protective c ap of ISE. Briefly rinse
the electrode with clean deionized water to remove any residues.

Rinse probes before and after each calibration or sample measurement to avoid cross-contamination. For
more details please refer to Manufacturer’s care and maintenance guide.

NOTE: The ion calibration values will be lost once power is disconnect ed; only pH and mV cali bration
values will be retained.

1. Connect an Ion Selective Electrode (ISE) to the BNC input connecto r
on the back of the meter. Turn the meter ON.

2. Press MODE key (if needed) to select ion measurement mode. If
there is no old calibration values, then the meter displays “---“ in the
upper display in measureme nt mode.

3. Dip the ISE into the first calibration standard. Make sure to start with
the calibration standard that has the lowest concen tration and move
up to the standards that have higher concentration s .

Swirl it gently. Press CAL key to enter the ion calibration mode. The
[CAL] indicator appears above the upper display and the upper
display reads “0.10”. The lower display shows the corresponding
absolute mV value of sample measured.

4. The first calibration point of 0.10 ppm appears on the display. If you
DO NOT wish to calibrate to this point, press  (up arrow) to skip
and continue to the next calibration point of 1.0 ppm or 10.0 ppm.

5. If you DO wish to calibrate to 0.10 ppm, allow the mV reading to
stabilize. When the reading stabilizes the [READY] indicator will
appear on the display. Stabilization may take a few minutes
depending on electrode and standard concentration.

6. Press ENTER key to confirm your first point calibration (see Figure 5).
After calibration, the display will sho w the next calibration option, i.e.

1.0 ppm. Proceed by rinsing the electrode with deionized water
before placing it in the nex t calibration standard i.e. 1.0 ppm.

7. Allow the meter to stabilize in the next calibration standard. Wait for
the [READY] indicator to appear before you press the ENTER key to
confirm the second calibration point. The upper display flashes
momentarily then moves to the next calibration point of 10.0 ppm.

NOTE: If you are performing a 2-point ion calibration, press
CAL/MEAS key. “SLO” appears in the upper display with the [mV]
indicator and the number in the lo wer display is the electrode s lope in
mV (see Figure 6). You are ready to take ion measurements. If the
slope is outside the acceptable l imits or if incorrect standards have
been used the upper display will show “Er3” (see Figure 7).

Figure 5: 1st-point calibration

9

Instruction Manual pH 510/ Ion 510

If you are performing a 3-point calibr ation, rinse off the electrode
with deionized water, place it in the next calibration standard and
proceed as follows.

8. Allow meter to stabilize in the next calibration st andard. Once the

reading has stabilized, press the ENTER key to confirm the third
calibration point. The upper display flashes for a few seconds then
“SLO” appears in the upper display with the mV indicator, the
number in the lower display is the average electrode slope in mV
(see Figure 6). After a few seconds the meter reverts to the
measurement mode. You are now ready to take ion measurement.

NOTE: All the calibration values are succ essfully stored. Ot herwise
error message will appear in the LCD if the calibration was
unsuccessful with no values stored into me mory.

NOTE: You may compare the average electrode slop e value with
the expected slope value for your electrode from your electrode
manual to verify electrode operation.

HINT: Minimum of 2
points and maximum
of 3 points are
allowed for Ion
Calibration. All
calibration points
should be at least one
decade apart, i.e.
valid calibration
points are 0.1, 1, 10
ppm or 1, 10, 100 ppm
or 0.1, 1 ppm or 1, 10
ppm or 10, 100 ppm.

Figure 6: Slope value in mV

Figure 7: Error message Er3

if slope not within range

10

Instruction Manual pH 510/ Ion 510

3.3 mV Calibration

1. Make sure the meter is on and if necessary, press the MODE key to

select mV mode. The [mV] indicator appear s in the upper right-hand
corner of the display.

2. Press the CAL/MEAS key. The [CAL] indicator appears above the

upper display that displays the relative mV reading. The lower
display shows the absolute mV value.

NOTE: If you have never calibrated relative mV or if th e meter has
been reset, the value shown in the upper dis play is the same as the
absolute mV value. The range of adjust ment is -1999 mV to 1999
mV (resolution is 1 mV); of which from - 199.9 to 19 9.9 mV the meter
gives you a resolution of 0.1 mV.

3. Press ¿ or À key to enter the relative mV value that matches your

desired reading.

4. Press the ENTER key to confirm the reading and the meter

automatically returns to the measurement mode . The upper display
now shows the relative mV reading. The [R.mV ] indicator appe ars in
the upper right hand corner .

NOTE: New mV calibrations will override existing stored mV
calibration data. The meter retains stored mV calibr at ions even when
the meter is turned off.

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Instruction Manual pH 510/ Ion 510

3.4 Temperature Calibration

In this calibration procedure, the ATC probe is attached to the meter and the [ATC] annunciator is displayed on
the right hand side of the LCD.

1. Dip the temperature probe into a solution of known temperature,

such as a temperature bath for a few minutes until the te mperature
probe stabilizes.

2. To perform temperature calibration, you must be in the pH

measurement mode.

3. Press MODE key to switch to the pH measurement mode if you are

in the mV or ion measurement modes.

4. Press CAL/MEAS key to enter pH calibr ation mode.

5. Press MODE key again to switch to temperature calibration.

6. Press ¿ or À key to scroll to the correct temperature value

corresponding to the known solution temperat ure. The meter allows
a limit of ± 5

o

C variation (with 0.1 oC resolution) of the input

reading, and of the original displayed reading.

7. Once you selected the correct temperature, press ENTER key to

confirm. The meter automatically returns to the pH measurement
mode.

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Instruction Manual pH 510/ Ion 510

4 MEASUREMENT

4.1 Automatic Temperature Compensation (ATC)

For ATC measurements, simply attach the temperature probe into the
meter (see Section 2.2). The [ATC] annunciator lights up on the LCD.

NOTE

If you are using a temperature probe, the probe must be submersed in
the liquid you are measuring so that the sample temperature can be

4.2 Manual Temperature Compensation (MTC)

Important: For MTC, you must disconnect the temperature probe.

1. Switch the meter on. Press the MODE key to select pH mode.

2. Press the CAL/MEAS key to enter pH calibration mode. The CAL
annunciator appears above the upper display.

3. While in pH calibration mode, press the MODE key to enter
temperature compensation mode. The upper display shows the
current temperature setting and the lo wer display shows the default
value 25.0 ºC (if the meter has never been manually set for
temperature) or the last manually set value if the meter has
previously set for MTC. If you have not set the current temperature
setting the upper display will also show the default value of 25.0 ºC.

4. Check the temperature of your sample using an accurate
thermometer.

5. Press ¿ or À key to offset the temperature to the measured valu e
from step 4.

6. Press ENTER key to confirm the selected temperature and return to
the pH measurement mode.

NOTE
To exit this program without confirming the MTC value, DO NOT press

ENTER key in step 6. Press CAL/MEAS key instead.

The meter will compensate pH reading for the manually set temperature.

13

Instruction Manual pH 510/ Ion 510

4.3 Taking Measurements

Be sure to remove any electrode soaker bottle or protective rubber cap from the electrode before
measurement.

To take readings:

1. Rinse the electrode with distilled or tap water before use to remove any impurities adhering to the
electrode body. If the pH electrode had dehydrated, soak it for 30 minutes in EC-RE005/ 00653-04
electrode storage solution. (See Electrode Care - Sec tion 6)

2. Press ON key to switch on meter. The [MEAS] annunciator appears on the top center of LCD. The ATC
annunciator appears in the lower right hand corner to indicate ATC if a temperature probe is plugged.
(For MTC, refer to Section 4.2).

3. Dip the elec tro de and te mper atu re probe into the sample , mak ing sure that the glass bulb of the el ec trode
must be completely immersed into the sample. Stir the probes gently to create a homogeneous sample.

4. Allo w time for reading to stabilize. When the readings stabilize, a [READY] annunciator displays. The
READY mode shows the readings are stable within a range of ±0.01 pH. When this o ccurs, the [READY]
annunciator appears on the top left side of LCD. Take the reading.

5. To toggle between pH and mV in the pH510, or to toggle bet ween pH, mV and Ion in th e Ion 510, press
the MODE key.

14

Instruction Manual pH 510/ Ion 510

4.4 HOLD Function

This feature lets you freeze the value of the measured reading. HOLD can be used anytime when in [MEAS]
mode. You can store the held reading into memory by pressing MI key.

HOLDing a measurement

To hold a measurement, press the HOLD key while in measurement
mode. [HOLD] annunciator will appear on the display.

Releasing a Held Value

To release the held value, press HOLD key again. [HOLD] annunciator
will disappear from the LCD. Continue to take measurements.

4.5 Storing and Recalling Data from Memory

The meters allow up to 50 data sets to be stored and recalled into its non- volatile memory in the Last-In-First­Out (LIFO) sequence. The data set is also stored with specified location as indicated on the display. Howe ver
you can selectively view the data at that specified location for added convenience.

pH 510 meter:

• pH and Temperature

• mV (or Relative mV) and temperature

Ion 510 meter:

• pH and Temperature

• mV (or Relative mV) and temperature

• ion and mV

For example you can store 32 pH and 18 mV values for the pH 510 or 15 ion , 12 mV and 23 pH values for the
Ion 510.

Memory Input

This feature allows you to store measurement readings into memory for
later review. This mode can be invoked at any time during measurement
mode or when the reading is frozen ([HOLD] annunciator is displayed on
LCD by the activation of HOLD key).

To store reading:

1. During any measurement or HOL D function, press the MI key once

to input data into the memory.

2. [MEM] annunciator, “StO” and memory number will flash

momentarily. The meter then returns to the measurement mode.

3. To continue storing data, press MI key again.

NOTE: If the memory is full, the first value stored will be erased to
create space for the new value.

15

Instruction Manual pH 510/ Ion 510

Memory Recall

1. In the measurement mode, press MR key once to retrie ve the l a st
reading stored. The memory location screen – “MEM”, “LOC” and
the memory number – will flash on the display.

2. Press the ENTER key to recall the reading stored under that memory
number.

3. If necessary, you can selectively choose to view any data that is
stored by using ¿ or À key. For example to view the third data
location se t t o L O C 3 from last stored location of LOC 5. Use ¿ or À
key to set to LOC 3. Press ENTER key to retrieve the data from this
location.

4. To continue reviewing additional stored data, press ENTER key
again. For this instance the next location, LOC 2, will be displayed.

5. To exit Memory Recall and operate meter, press the MEAS key to
return to the measurement mode.

NOTE: Readings stored in memory are ret ained even of the unit is turned
off. To erase all readings stored in memory, see Program P1.0 on the
next page.

16

Instruction Manual pH 510/ Ion 510

5 SETUP FUNCTIONS

The advanced SETUP mode lets you customize your meter’s preferences and defaults:

P1.0: Memory Clear (Clr)
P2.0: Viewing electrode data (ELE)
P3.0: Selecting buffer sets (bUF)
P4.0: Reset to factory default settings (rSt)

To enter the SETUP mode:

1. Turn meter OFF.

2. With meter off, press and hold the MODE key, and press and release the ON key. The display will show
the [SETUP] indicator. If the display indicates you are in the measurement mode turn the meter off and try
step 2 again until [SETUP] appears.

NOTE: To exit the SETUP mode at anytime without confirming changes press CAL/MEAS until the
measurement mode appears. You may have to press CAL/MEAS key two times before th e mete r re verts to the
measurement mode.

5.1 P1.0 Clear Memory

Use this program to clear all m emory values when you need to store a
new series of values. This lets you avoid confusing the old values with
the new ones. NO is the default setting.

1. Enter the SETUP mode as described above. The meter
automatically goes to program P1.0. Clr appears in the upper
display and P1.0 in the lower display.

2. Press the ENTER key to access the program and the lower display
shows either “nO” or “YES” (depending on last option selected or
factory default i.e. nO).

3. Use ¿ or À key to toggle between “nO” or “YES”

4. Press ENTER key to confirm selection and return to the SETUP
mode. To continue to the next SETUP, press ¿ or À key to select a
new program. Otherwise press the CAL/MEAS key to return to the
measurement mode.

17

Instruction Manual pH 510/ Ion 510

5.2 P2.0 Viewing Electrode Diagnosis

This program lets you check the electr ode parameters for diagnos tic purposes. Depending on the last displa y
mode, displayed electrode info rmat i on varies . Only these rea di n gs can be viewed:

Last Display Mode Electrode Property

pH in mV %
Ion - in mV
mV in mV -

1. Enter the SETUP mode as described above. The meter
automatically goes to program 1.0.

2. Press ¿ or À key to scroll throu gh the programs until you view ELE
in the upper display and P2.0 in the lower display. The electrode
annunciator also appears.

3. Press ENTER key to access the program P2.0. The lower display
will read P2.1.

The information you wil l see in Program P2.0 will depend upon which
MODE the meter was in prior to shutting the meter off:

In the pH measurement MODE:

P2.1 shows the mV offset of the electrode. Press ENTER key to go
to P2.2 (see Figure 8).

P2.2 shows the slope in % of the electrode.

In the mV measurement MODE:

P2.1 shows the mV offset of th e electrode (see Figure 9).

In the Ion measurement MODE:

P2.1 shows the average slope of the electrode (see Figure 10).

4. To exit P2.0 program press ENTER key until ELE is in the upper

display and P2.0 is in the lower display. Press ¿ or À key to
select a new program OR press CAL/MEAS key to return to the
measurement mode.

Offset Slope

Figure 8: slope in %

Figure 9: mV offset

Figure 10: Average slope (mV)

18

Instruction Manual pH 510/ Ion 510

5.3 P3.0 Selecting pH Buffer Standard

This program lets you select between two standard calibration buf fer sets,
depending upon your requirements.

The available standards are USA and NIST.

1. Enter the SETUP mode as described in this section earlier. The
meter automatically goes to program P1.0.

2. Press ¿ or À key to scroll through the progr ams until you v iew “bUF”
in the upper display and P3.0 in the lower display. The buffer
annunciator also appears.

3. Press ENTER key to access the program P3.0. The lower display will
read either ”USA” or “nSt” (depending on the previous setting you
have made; factory default is USA.)

4. Press ¿ or À key to select the buffer set you require:

• USA buffers: 4.01, 7.00 and 10.01

• nSt buffers: 4.01, 6.86 and 9.18

5. To confirm the buffer standard, pr ess ENTER. All the characters on
the display will flash momentarily and then returns to P3.0.

6. To exit P3.0 program press ¿ or À key to select a new program OR
press the CAL/MEAS to return to the measurement mode.

5.4 P4.0 Meter Reset

This program resets and clears all memory data and calibration data
except temperature calibrated value which will be retained. NO is the
default setting.

1. Enter the SETUP mode as described in this section earlier on. The
meter automatically goes to program P1.0.

2. Press ¿ or À key to scroll through the programs until you view rSt in
the upper display and P4.0 in the lower display. The mV and pH
annunciators also appears.

3. Press the ENTER key to access the program P4.0. The lower
display will read NO.

4. Press ¿ or À key to select “NO” or “YES”. Select YES erases all
calibration values for all modes (pH, mV and ion) and all memory
values.

5. To confirm the reset, make sure YES is selec ted and press ENTER.
All the characters on the display will flash for a second then the
meter returns to the measurement mode.

NOTE

Once YES is selected and ENTER key is pressed; the reset program
clears all old calibration data and memory data. The data is no longer
retrievable. You must calibrate the meter before taking any new
measurements. Meter will however retain buffer set selection (NIST or
USA).

19

Instruction Manual pH 510/ Ion 510

6 pH ELECTRODE MAINTENANCE

pH electrodes are susceptible to dirt and contamination and need to be cleaned regularl y depending on the
extent and condition of use. Refer to Section 6.3 for more details on cleaning pH electrode.

6.1 Storage

For best result, always keep the pH ele ctrode bulb wet, prefera bly with the use of storage solution. p H 4 buffer
is also acceptable as a storage medium. Do not store in deionized water. The protective rubber cap or
container filled with the buffer solution p rovides ideal storage for long periods.

6.2 After Use

After measurement is complete, follow the sequence below for storage.
a) Wash the electrode and reference junction in de-ionized water
b) If using a r efillable electrode, close the refilling hole by r eturning its rubber sleeve or stopper cap into

position.

c) Store the electrode as mentioned above (see Storage).

6.2.1 Electrolyte Replacement (for refillable el ectrod es only)

The reference electrolyte needs to be refilled when the pH electrode has been used for an extended period, or
when the internal electrolyte has dried up. To accomplish this, follow the procedure:

1. Remove the protective rubber ca p or sleeve to expose the filling port of the electr ode. Remove the old
reference electrolyte by flushing out with a syri ng e and a flex ibl e tube .

2. Add in fresh electrolyte until it reaches the level of the refilling port. The reference electrolyte depends on
your electrode. For double junction or Calomel electrodes , the electrolyte should be 4M KCl (EC-RE001/
05992-48). Replace the rubber sleeve.

Sleeve

Rubber
Stopper

3. Rinse the liquid junction with de-ionized water and gently tap dry.

NOTE

If these steps fail to restore normal electrode response, you may attempt to rejuvenate it. (See: 6.4 pH
Electrode Rejuvenation).

20

Instruction Manual pH 510/ Ion 510

6.3 Electrode Cleaning

pH electrodes that are mechanicall y intact and not in use for a short peri od of time can be restored t o normal
performance by one or a combination of following procedures:

a) Salt deposits

Dissolve the salt deposits by immersing the elec trode in a container fille d with some tap wat er for ten to fifteen
minutes. Then thoroughly rinse with de-ionized water .

b) Oil / Grease Films

Wash the pH electrode bulb in mild detergent and water. Rinse electrode tip with de-ionized water.

c) Clogged Reference Junction

Heat a dilute 1% KCl solution to 60-80
solution for approximately 10 minutes (as shown above) . Care must be taken when performing this procedure.
Allow electrode to cool while immersing in some unheated KCl solution. (Heating time confirmed at 10 minutes
on our side, pls take note)

o

C. Place the sensing portion of the pH electrode into heated KCl

d) Protein Deposits

Use Protein Cleaning Solution (EC-DPC-BT/ 00653-06) to remove any protein that is deposited onto pH
electrode. Allow the electrode to stand in this solution for five to ten minutes.

21

Instruction Manual pH 510/ Ion 510

6.4 pH Electrode Rejuvenation

CAUTION: Proper protective eyewear and precautionary measures must be used when performing the

rejuvenation procedure as it involves the use of concentrated acid and alkaline.
Generally, if procedure of storage and maintenance had be en closely followed, the pH electrode can be used

immediately. However, should the electrode respons e become sluggish, it may be possible that th e glass bulb
has dehydrated. Immersing the electrod e in an ideal storage so lution (e.g. buffer pH 4 s olution) for 1- 2 hours
can dehydrate the glass bulb. If this fails , the electrode may requ ire re-activation. At no t ime should you touch
or rub the glass bulb as this causes the build-up of electrostatic charge. If the above procedure does not re­activate electrode to acceptable status, try rejuve nating electrode by following the procedure outlined below.

6.4.1 Rejuvenation Procedure

1. Dip and stir the electrode in freon or alcohol for 5 minutes.

2. Leav e th e electrod e in tap wat er for 15 minutes.

3. Dip and stir the electrode in concentrated acid (e.g. HCl, H

4. Repeat Step 2.

5. Dip and stir in strong base (NaOH) for 5 min. Leave for 15 minutes in tap water.

6. Test with standard calibration buffer solutions.

Finally, test with standard calibration buffer solutions to see if the electrode yields acceptable results. You may
repeat steps 3-6 again for better response (maximu m 3 times). If the response does not improve, then the
electrode has completed its useful life. Replace with a new electrode.

) for 5 minutes.

2SO4

22

Instruction Manual pH 510/ Ion 510

7 TROUBLESHOOTING GUIDE

7.1 Error Messages

The table provides a quick guideline for diag nosis of possible problems in dicated by the messages generate d
by the 510 meter series. The table also provides possible solutions to problems encountered.
Diagrams in serted below.

Display Screen ERROR

MESSAGE

Err. 2 (in upper

display) during Ion
calibration

Err. 3 (in upper
display) during Ion
calibration

Err. 4 (in upper
display) during Ion
calibration

INDICATES CAUSE CORRECTIVE

ACTION

Too few
calibration points

Slope error Ion calibration

Calibration points
more than 1
decade apart

Meter calibrated with
only 1-point in ion
calibration

solution not within
acceptable range
(15mV to
90mV/decade)

Calibration points
more than 1 decade
apart

Recalibrate using 2 or
more points

Recalibrate using fresh
ion solutions

Replace electrode.

Recalibrate using
calibration points 1
decade apart.

Err (annunciator)

Electrode icon

(indicator)

Ur or Or (in upper
display)

Wrong keypad
input

Calibration error Buffer value does not

Measured value is
out of range

Button does not work
in the current
operation mode

match value displayed
or electrode is
disconnected or
failing

Electrode not
connected

Electrode clogged,
dirty or broken

Meter not calibrated.
Measurement is

under range or over
range

Release key. Select
valid buttons
depending on mode.

Use fresh buffer
solution or check
electrode connection.

Possibly replace
electrodes.

Make sure electrode is
connected

Clean or replace
electrode

Recalibrate the meter.
Treat samples to bring

within meter measuring
range

23

Instruction Manual pH 510/ Ion 510

7.2 Troubleshooting

PROBLEM PROBABLE CAUSE REMEDIAL ACTION

No display a) Mains power not switched on.

b) AC Adapter socket not inserted properly.

Unstable reading a) Insufficient reference electrolyte in

b) Broken electrode b) Replace electrode.
c) External ‘noises’ or induction ( e.g.

d) Dirty electrode. d) Clean the electrode. Hydrate, then rejuvenate if

Slow response a) Dirty electrode. a) Clean electrode. Hydrate, then rejuvenate if

Meter not
responding to key
press

electrode.

electrical ‘noise’ caused by a nearby
motor)

a) HOLD mode in operation.
b) Internal program error.

a) Switch on the powe r supply.
b) Re-insert AC Adapter socket.
a) Fill electrode with reference electrolyte.

c) Remove or switch off interfering device.

necessary.

necessary.
a) Cancel HOLD mode. Press Hold button.
b) Reset all internal programs by removing and

reinserting the A/C adapter.

24

Instruction Manual pH 510/ Ion 510

8 ADDITIONAL INFORMATION

8.1 pH and Temperature

Automatic Temperature Compensation (AT C) compensates for tem perature changes . Some solu tions sh ow an
increase while others a decrease in pH with the same tem perature change. Record the solution temperature
along with the pH value, or the measurement may be meaningless. Temperature changes also affect the signal
the pH electrode sends to the meter and causes a loss of accuracy for the reading. To limit the loss of
accuracy during calibration, make the temperature of the pH buffer calibrating solutions and the sample
solution the same.

8.2 Use of Standard pH Buffers

Use standard buffer solutions to calibrate a pH meter be fore you measure the pH of a s ample. They serve as
reference standards for basis of comparison between measurement. The most common USA standard buffers
are the pH 4.01, pH 7.00 and pH 10.01 and the NIST s tandard buffers ar e pH 4.01, pH 6.86 and pH 9. 18. For
1-point calibration, use a standard buff er of pH 7.00 or a st andard buffer wh ose pH value is close to that of the
sample. Use 2-point calibration when you know the sampl e is acidic (low pH) or basic (high pH). For acidic
samples, use standard buffers of pH 7.00 and pH 4.01. For basic samples, use standards of pH 7.00 and pH

10.01. Use a 3-point calibration when the sample pH is completely unknown. Use all pH 7.00, pH 4.01 and pH

10.01 calibration solutions.

8.3 Standard pH Buffers

The following table shows the various pH values at different temperature of the solution during calibration. The
table also illustrates w hy a calibration value may be different from the buffer value at 25

Temperature (oC)

0 4.01 7.12 10.32 4.01 6.98 9.47

5 4.01 7.09 10.25 4.01 6.95 9.38
10 4.00 7.06 10.18 4.00 6.92 9.32
15 4.00 7.04 10.12 4.00 6.90 9.27
20 4.00 7.02 10.06 4.00 6.88 9.22
25 4.01 7.00 10.01 4.01 6.86 9.18
30 4.01 6.99 9.97 4.01 6.85 9.14
35 4.02 6.98 9.93 4.02 6.84 9.10
40 4.03 6.97 9.89 4.03 6.84 9.07
45 4.04 6.97 9.86 4.04 6.83 9.04
50 4.06 6.97 9.83 4.06 6.83 9.01
55 4.08 6.97 9.81 4.08 6.83 8.99
60 4.10 6.98 9.79 4.10 6.84 8.96
70 4.12 6.99 9.76 4.12 6.85 8.92
80 4.16 7.00 9.74 4.16 6.86 8.89
90 4.20 7.02 9.73 4.20 6.88 8.85

pH 4.01 pH 7.00 pH 10.01 pH 4.01 pH 6.86 pH 9.18

USA Buffer NIST Buffer

o

C.

25

Instruction Manual pH 510/ Ion 510

8.4 List of Accessories

8.4.1 Replacement Meter and Accessories

Item Description Eutech Instruments

Order Code No.

pH 510 Bench meter complete with temperature probe and
integral electrode holder

Ion 510 Bench meter complete with temperature probe and
integral electrode holder

Temperature Probe for pH/Ion 510 bench meter, 1m cable length EC-PH5-TEMB01P 35613-05
110/120VAC power adapter, 50/60 Hz EC-120-ADA 35615-07
220/230VAC power adapter, 50/60 Hz EC-220-ADA 35615-08

EC-PH510/01S 35619-10

EC-ION510/01S 35619-20

Oakton Instruments

Order Code No.

8.4.2 pH Buffers/Sachets, Reference Electrolyte & Others

To order some accessories, send the part name and number to our authorized distributor.

Item Description Eutech Instruments

Order Code No.

pH 4.01 Buffer Solution (480 ml bottle) (1 pint) EC-BU-4BT 00654-00
pH 7.00 Buffer Solution (480 ml bottle) (1 pint) EC-BU-7BT 00654-04
pH 10.01 Buffer Solution (480 ml bottle) (1 pint) EC-BU-10BT 00654-08
pH 4.01 Buffer Sachets (20 ml x 20 pcs. per box) EC-BU-4BS 35653-01
pH 7.00 Buffer Sachets (20 ml x 20 pcs. per box) EC-BU-7BS
pH 10.01 Buffer Sachets (20 ml x 20 pcs. per box) EC-BU-10BS
Reference Electrolyte (KCl with Ag/AgCl) (480 ml bottle) (1 pint) EC-RE001 05992-47 (125 ml)
Reference Electrolyte (4MKCI) for Calomel (Hg/ Hg2Cl2)

electrodes & other specialty electrodes (1 pint)
Storage Solution for pH Electrode (480 ml bottle) (1 pint) EC-RE005 00653-04
Protein Cleaning Solution (480 ml bottle) (1 pint) EC-DPC-BT 00653-06

EC-RE002 05992-48 (125 ml)

Oakton Instruments

Order Code No.

35653-02
35653-03

8.4.3 Replacement Electrodes for pH/ ION 510 meters

All electrodes are supplied with 1m cable length and BNC connector.

Item Description Eutech Instruments

General purpose, Epoxy-body double junction pH Combination
Electrode, 12 X 110 mm, 1m cable length

General purpose, Epoxy-body “3-in-1” pH/Temp. Combination
Electrode, 12 X 110 mm, 1m cable length

Glass body Refillable pH Combination Electrode: Annular
ceramic reference ju nction with protective sensor guard, 1 m
cable length

General Purpose Epoxy-body double junction ORP Electrode,
12 X 110 mm, 1m cable length

Order Code No.

EC-FE72522-01B 35805-05

EC-FE73529-01B 35811-71

EC-FG73504-01B 05997-10

EC-FE79602-01B 35805-15

Oakton Instruments

Order Code No.

26

Instruction Manual pH 510/ Ion 510

8.4.4 Ion Selective Electrodes (ISE)

Ask our distributors for more details regarding ISE and its stan dard so luti ons. The ta ble bel o w lists the range o f
electrodes available. All ISE are supplied with 1m cable length and BNC connector.

Ion Ion

Ammonia (NH3) Iodide (I-)

Ammonium (NH

+

) Lead (Pb+2)

4

Bromide (Br-) Lithium (Li+)

Cadmium (Cd+2) Nitrate (NO

-

)

3

Calcium (Ca+2) Nitrogen Oxide (NOx)

Carbon Dioxide (CO2) Perchlorate (CIO

-

)

4

Chloride (Cl-) Potassium (K+)

Copper (Cu+2) Silver / Sulfide (Ag+ / S-2)

Cyanide (CN-) Sodium (Na+)

Fluoride (F-) Surfactant (X+, X-)

Fluoroborate (BF

-

) Water Hardness

4

27

Instruction Manual pH 510/ Ion 510

8.5 Specifications

Description pH 510 Ion 510

pH Range 0.00 to 14.00 pH
Resolution 0.01 pH
Accuracy

Ion Concentration Range 0.01 to 1999 ppm

Resolution

Accuracy

mV Range Yes

Resolution
Accuracy
Calibration Offset Adjustment Up to ±150 mV

Temperature Range 0.0 to 100.0 oC
Resolution 0.1
Accuracy
Temperature Compensation Automatic / Manual (0 to 100 oC)
No. of pH Calibration Points Up to 3 points with Auto-buffer recognition

pH Buffer Calibration Options

No. of Ion Calibration Points Up to 3 points (minimum 2 points)
Ion Calibration Options 0.1, 1.0, 10.0 or 100.0 ppm
Min. & Max. Slope during

Calibration
Temperature Calibration
Memory 50 data sets
Hold Function Yes
Self-diagnostic Messages Yes
pH Slope and Offset Di splay Yes
Inputs BNC, Phono, Ref. (Half-cell), Ground
Output Recorder (+/- 2000 mV)

Power Requirements

Display

Dimensions / Weight

0.01 pm (0.01 to 0.99 ppm); 0.1 ppm (1.0
to 199.9 ppm); 1 ppm (200 to 1999 ppm)

±0.5% Full Scale for mono-valent ions

0.1 mV (± 199.9 mV), 1 mV beyond ± 200 mV
± 0.2 mV (± 199.9 mV), ± 2 mV beyond ± 200

Offset in 0.1

AC/DC 9V Adapter (110 VAC/220 VAC, 50-

Custom Dual LCD (1 x 4 digits, 1 x 3.5 digits,

Meter with electrode holder: 18 x 23 x 6 cm /

Boxed (meter with electrode holder): 40 x 26 x 9

± 0.01 pH + 1 count

±1.0 % Full Scale for di-valent ions

mV

o

C

o

C

± 0.3

USA : pH 4.01, 7.00, 10.01;

NIST: pH 4.01, 6.86, 9.18

15 mV/decade to 90 mV/decade

o

C increments; Offset range: ± 5 oC

60Hz)

annunicators)

1250 g

cm / 1950 g

9 9
9 9
9 9

9

± 1999 mV

± 500mV(Absolute)

±1999mV( Relative)

9 9
9 9
9 9

9 9
9 9
9 9
9 9
9 9

9 9

9 9
9 9
9 9
9 9
9 9
9 9
9 9

9 9

9 9

9 9

9

(± 500 mV input)

9

9

9

9
9

9

28

Instruction Manual pH 510/ Ion 510

9 WARRANTY

This bench meter is supplied with a 3-year warranty from manufacturing defects and electrodes for 6 months
from the date of purchase.

If repair or adjustment is necessar y and has not been the resul t of abuse or misuse within the designated
period, please return – freight pre-paid – and correction will be made without charge. Eutech Instruments/
Oakton Instruments will det ermine if the product problem i s 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

10 RETURN OF ITEMS

Authorization must be obtained from our Customer Service Department or authorized distributor before
returning items for any reason. A “Return Goods Author ization ” (RGA) for m is avail able t hrough our Aut horized
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. Eutech
Instruments/ Oakton Instruments will not be responsible for damage resulting from careless or insufficient
packing. A restocking charge will be made on all unauthorized returns.

NOTE: Eutech Instruments Pte Ltd/ O akton Instruments reserves the r ight to make improvements in design,
construction, and appearance of products without notice.

29

For more information on Eutech Instruments/ Oakton Instruments’ products, contact your nearest
distributor or visit our website listed below:

Oakton Instruments

P.O Box 5136,
Vernon Hills, IL60061, USA
Fax: [phone]

www.4oakton.com
www.oaktoninstruments.com

Eutech Instruments Pte Ltd

Blk 55, Ayer Rajah Crescent,
#04-16/24 Singapore 139949
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
Web-site: www.eutechinst.com

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