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pH/mV/Ion/Cmeter

ON/OFF

MEA

S

MODE

HOLD

ENTER

CAL

MR

MI

ThepH510 and Ion 510 SeriesBenchtop Meters

W D -35619-00, -02, -03, -05, -07,

-08, -10, -12, -15, -17

W D -35619-20, -22, -23, -25, -27, -28

pH510pH/mV/Cmeter

Ion 510pH/Ion/mV/Cmeter

2/00 2000 00702-93

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mV calibrationand

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pH calibrationand

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introduction

Table of contents1. Introduction............................................................................................................................................................................4-7

Keypad Rear panels O ptional Electrode H older

2. Starting up.................................................................................................................................................................................8

3. pH calibration and measurement...................................................................................................................................9-13Calibration M easurem ent (w ith m anual or autom atic tem perature com pensation) H old function

4. mVcalibration and measurement.................................................................................................................................14-15Calibration M easurem ent H old function

5. Ion calibration and measurement (Ion 510 only)......................................................................................................16-18Calibration M easurem ent H old function

6. Memory Function.....................................................................................................................................................................19M em ory input M em ory recall

7. Temperature Calibration.......................................................................................................................................................20

8. Setup mode........................................................................................................................................................................21-23Clear m em ory Electrode data Buffer selection Reset

9. Electrode care...................................................................................................................................................................24-25Electrode activation Electrode m aintenance Storing pH /O RP electrode Electrode cleaning

10. Troubleshooting................................................................................................................................................................26-27

11. Additional information.........................................................................................................................................................28

12. Specifications..........................................................................................................................................................................29

13. Accessories.............................................................................................................................................................................30

14. Warranty.....................................................................................................................................................................................31

15. Return of items........................................................................................................................................................................31

3

Quicktipletthem initableofcontentsintheouterm arginsofthism anualguideyouinstantlytotherightsection

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4

pH/mV/IonCmeter

ON/OFF

MEAS

MODE

HOLD

ENTER

CAL

MR

MI

1. IntroductionThank you for purchasing the O A KTO N W D -35619-series

B enchtop m eters. These m eters are m icroprocessor

controlled, user-friendly and reliable. The large custom ized

LC D allow s clear, easy operation. The display has m ode

annunciators for pH , tem perature, m V and ion readings.

KeypadSee Figure 1.

A large m em brane keypad w ith touch feedback m akes the

m eter easy to use. N am es and sym bols describe the

function button controls.

Key DescriptionON/OFF Pow ers the m eterON/OFF. W hen the m eter is

sw itched on, it starts in the m ode the m eter

w as last in w hen pow ered dow n.

CAL/MEAS Sw itches betw een the m easurem ent and cali-bration m odes of the m eter. In SETU P m ode,

CAL/MEAS returns to the m easurem ent m ode.

MODE pH 510:M easurem ent:MODE sw itches betw een pH

and m V.

C alibration:MODE sw itches from pH to tem per-

ature in the pH calibration m ode (ifMODE is

pressed again, it w ill N O T sw itch back to pH ).

Ion 510:

M easurem ent:MODE sw itches betw een pH ,

m V and ion.C alibration:MODE sw itches from pH to tem -

perature in the pH calibration m ode (ifMODE is

pressed again, it w ill N O T sw itch back to pH ).

MI/ Scrolls values in m V and tem peraturecalibration m ode. Selects calibration points in

the ion calibration m ode (Ion 510). Scrolls to the

next program in the SETU P m ode.

MIinputs m easurem ents into m em ory and

scrolls through m em ory values.

MR/ Scrolls values in m V and tem peraturecalibration m ode. Selects calibration points in

the ion calibration m ode (Ion 510). Scrolls to the

previous program in the SETU P m ode.

MRrecalls m easurem ents from m em ory and

scrolls through m em ory values.

HOLD Freezes a m easurem ent on the display. Pressagain to get current readings.

ENTER Confirm s and enters the value selected forcalibration. Enter also functions in the m em ory

m ode.

Figure 1

ON/OFF

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HOLD

ENTE

R

CALM

R

MI

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5

Figure 2

Rear Panel

See Figure 2.

The O AKTO N W D -35619-series m eters provide a

com plete set of input connections for the various

accessories com m only used. Listed in the table below

are details of the connections that you can m ake.

Connection FunctionATC Phono jack connection from the tem pera-

ture probe for Autom atic Tem perature

Com pensation.

INPUT For connection to sensor electrodes w ithB N C type connectors. The m eter

accepts any pH , O R P or ISE w ith B N C

connector. A lw ays m ake sure that the

connector is clean and dry.

REF For connection to pin type referenceelectrode norm ally used w ith half cell

(m ono) type pH electrodes or ISEs.REC For connection to strip chart recorders.

U se subm iniature plug w ith positive tip.

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

DC For connection of the A C adapter pow ersupply (included).

ATC INPUT REF REC GND DC

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Optional Electrode Holder

If you have purchased a benchtop m eter

w ith the optional electrode holder, the

electrode holder is included in the sam e

box as the m eter.

To attach the electrode holder to the meter:

1. The electrode holder base attached to

the bottom of the m eter com es in the

shipping position.

See Figure 3.

2. U se a Phillips screw driver to rem ove the

screw holding the electrode holder in

shipping position.

See Figure 3.

3.Slide the electrode base aw ay from the

m eter until the second screw slot lines

up w ith the original screw hole. U se the

screw rem oved earlier to secure

electrode holder base into position.

See Figure 4.

4. The electrode holder arm is reversible. If

desired, rem ove screw holding electrode

holder base and slide base out of

brackets. Slide base into brackets on

opposite side and replace screw .

See Figure 5.

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Bottom of meter

Figure 3

Figure 4

Figure 5

Shipping position

Bottom of meter

Bottom of meter

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Figure 6

Figure 7

5. To install the electrode arm , turn m eter

back to the upright position.

See Figure 6.

6. Line up the hole on the base of the

electrode holder arm w ith the peg on

the electrode holder base. Slide the hole

securely onto the electrode holder base.

See Figure 7.

The electrode arm is now ready to sw ing

into desired position. See Figure 8.

pH/mV/Ion/Cmeter

ON/OFF

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HOLD

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CAL

MR

MI

The electrode arm is now

ready to swing into

desired position.

Figure 8

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2. Starting Up

Back panel connections

See Figure 9 .

1. Connect the AC adapter from an A C pow er source to

the pow er jack (D C ). Slide in the adapter jack of the A /C

adapter into the m eter until it is firm ly seated. Voltage is

set at 9V and the current is at 500 m A , (center positive

connector).

2. Connect a sensor electrodeto the B N C input

connector (INPUT). The m eter can accept any pH , O R P,

or Ion Selective E lectrode w ith a B N C connector. M ake

sure the connector is clean and dry. Slide the electrode

connector of the electrode over the B N C connector

socket. M ake sure the slots of the connector are in line

w ith the posts of the socket. R otate and push the con-

nector clockw ise until it locks. For separate reference

electrodes, push electrode pin into jack m arked REF.

3. Connect a temperature probe to the input jack

m arked ATC. Insert the probe into the jack m arked

w ith ATCon the rear of the instrum ent panel.

4. Connect your chart recorderto the jack m arked REC

You can connect chart recorders or other data collection

devices. Plug in the sub m iniature (2.5 m m ) connector

from the chart recorder into the jack m arked w ith REC.

O utput signal is a m V signal equal to the m easured

electrode output. The tip of the connector is positive,

the sleeve is negative

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Attention!DonotgetwaterontheBNCconnectorduringoperation.Avoidtouchingtheconnectorwithsoi

ledorwethands.

Figure 9

ATC INPUT REF REC GND DC

fortemperatureprobe

for sensorelectrode

for separatereferenceelectrode

for chartrecorder

forground

forAC adapter

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3. pHcalibration and measurementFor best accuracy calibrate at least a tw o points using

fresh pH buffers. Select calibration buffers w ith calibra-

tion values closest to the m easurem ent range you expect

to w ork in. A three point calibration (U SA buffers: 4.01,

7.01, and 10.01 or N IST buffers: 4.01, 6.86 and 9.18)

ensures m axim um accuracy throughout the m easure-m ent range.

For quick checks w ith less accuracy, perform a one point

calibration. Select the buffer value closest to the

m easurem ent range you w ill w ork in.

If you choose to calibrate to only 1 or 2 pH values, the

older calibration values you do not calibrate to w ill rem ain

stored. These old stored calibration values m ay cause

accuracy loss w hen your readings are close to the old

stored calibration values. To clear old calibration data,

reset the m eter as show n in S ection 8, Program 4.0 onpage 23.

For ATC m easurem ents, attach the tem perature probe

to the m eter. The ATCm ode annunciator show s on the

display. See Figure 10.Insert the probe into the solution

to be m easured so that the sam ple tem perature can be

recorded and pH readings autom atically tem perature

com pensate. If m anual tem perature com pensation is

preferred, do not plug a tem perature probe into the

m eter.

DONOTREUSESOLUTIONS AFTERCALIBRATION.C ontam inants in the solution can affect the calibration,

and eventually the accuracy of the m easurem ents.

A ll new pH calibrations w ill over-ride existing stored pH

calibration data at these calibration points. The m eter

retains stored pH calibrations even w hen the m eter is

turned OFF.

memoryfunction

Ion calibrationand

measurement

pH

ATC

MEAS

C

setupmode

Figure 10

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Figure 11

Figure 13

memoryfunction

Ion calibrationand

measurement

pH

ATC

MEAS

C

pH

CAL

pH

pHREADY

CAL

pH

setupmode

Figure 12

pHcalibration

NOTE: W e recom m end that you perform at least a

2-point calibration using buffers that bracket (one above

and one below ) the expected sam ple range. You can

perform a 1-point calibration, but m ake sure that the

buffer value is close to the sam ple value you are m easur-

ing. Select pH 4, 7, or 10 buffers in pouches or bottlesfrom the O A KTO N standard buffer solutions.

1. Press the ON/OFF key. A ll the LC D segm ents display

for a few seconds. The LC D sw itches to the last m ode

the m eter w as turned OFFin w hen pow ered dow n

from the key pad. See Figure 11

The custom ized LC D display w ill indicate the follow ing:

Display RemarksMEAS M easurem ent m ode is selected.pH U nit of m easurem entC U nit of tem perature m easurem entATC A utom atic Tem perature Com pensation

(if tem perature probe or All-in-O neprobe

is connected)

pHCalibration

1. M ake sure the m eter is ON and if necessary, press the

MODE key to select pH m ode. The pH indicator

appears in the upper right hand corner of the display.

See Figure 11.

2. R inse the electrode in deionized w ater or rinse solution.

If using the ATC function w ith a separate tem perature

probe, rinse the tem perature probe as w ell.DO NOT

WIPE THE pH OR TEMPERATURE PROBES DRY!

W iping the probes causes static, and w ill create calibra-

tion and m easurem ent instability.

3. Select the pH buffer and pour som e into a C LEA N

container.

4. D ip the probe into the calibration buffer. The end of the

probe m ust be com pletely im m ersed into the sam ple.

Stir the probe gently to create a hom ogeneous sam ple.

5. Press CAL/MEAS to enter the pH calibration m ode.

The CAL indicator appears. The prim ary display w illshow the m easured reading w hile the sm aller

secondary display w ill indicate the pH standard buffer

solution. See Figure 12.

The m eter autom atically recognizes the buffers in the set

you have selected in the SETUPm ode (see page 23 for

instructions on how to select buffer sets): U SA (4.01,

7.00 or 10.01) or N IST (4.01, 6.86, or 9.18) buffers.

7. W ait for the m easured pH value to stabilize (w hen the

READYindicator displays in the left hand corner)

See Figure 13.

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8. Press the ENTER button. The prim ary display flashes

the calibration value.The calibration point is now

stored in the m eter. See Figure 14.

If you are perform ing a one-point calibration, press

CAL/MEAS to return to the m easurem ent m ode

and start taking pH readings.

If you are perform ing a m ulti-point calibration go to

step 9.

9. R inse the probe w ith de-ionized w ater or a rinse

solution, and place it in the next pH buffer. The m eter

autom atically sw itches to the next buffer solution

selected in the secondary display.


READYindicator displays in the left hand corner)

11. Press the ENTER button. The prim ary display flashes


stored in the m eter.

If you are perform ing a tw o-point calibration, press

CAL/MEAS to return to the m easurem ent m ode

and start taking pH readings.

If you are perform ing a three-point calibration go

to step 12.

12. R inse the probe w ith de-ionized w ater or a rinse

solution, and place it in the next pH buffer.


READYindicator displays in the left hand corner).

14.Press the

ENTERbutton. The prim ary display flashes


stored in the m eter. The m eter autom atically returns

to the pH m easurem ent m ode after a three-point

calibration is perform ed.

NOTES:

To exit from pH calibration m ode w ithout confirm ing

calibration,DO NOT press ENTER in step 8. Press

CAL/MEAS instead.

If the selected buffer value is not w ithin the accepted

w indow (see below ) from the m easured pH value: the

electrode and buffer icon blink and ERR annunciator

appears next to the secondary display. Press CAL/MEAS

to exit the ERR condition.

See Figure 15.

Windowof 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

memoryfunction

Ion calibrationand

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pHREADY

CAL

pH

pH

CAL

pHERR

setupmode

Figure 14

Figure 15

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pHMeasurement

This m eter is capable of taking m easurem ents w ith

autom atic or m anual tem perature com pensation. Autom atic

tem perature com pensation only occurs w hen a tem perature

sensor is plugged into the m eter. If there is no tem perature

sensor plugged into the m eter, the default setting is auto-

m atically 25C (if the m eter has never been m anually set for

tem perature) or the last m anually set value w ill display. You

can m anually set the tem perature to m atch your w orking

conditions using a separate therm om eter.

Automatic Temperature Compensation

For autom atic tem perature com pensation (ATC ) sim ply

plug the tem perature probe into the m eter (see page 8 for

directions). The ATCindicator w ill light on the LC D .

See Figure 16..

NOTE: If you are using a tem perature probe, the probe

m ust be subm ersed in the liquid you are m easuring.

Manual Temperature Compensation

IMPORTANT: For m anual com pensation, you m ust

disconnect the tem perature probe.

1. Sw itch the m eter on. Press the MODE key to select pH

m ode.

2. Press the CAL/MEAS key to enter pH calibration m ode.

The CAL indicator w ill appear above the prim ary display.

3. W hile the pH calibration m ode, press the MODE key to

enter tem perature calibration m ode. The prim ary displayshow s the current tem perature setting and the

secondary display show s the default value 25C (if the

m eter has never been m anually set for tem perature) or

the last m anually set value if the m eter has previously

set for m anual tem perature com pensation. If you have

not set the current tem perature setting the prim ary

display w ill also show the default value of 25C.

See Figure 17.

4. C heck the tem perature of your sam ple using an accu-

rate therm om eter.

5. Press the or keys to offset the tem perature to the

m easured value from step 4. See Figure 18.

6. Press ENTER to confirm the selected tem perature and

to return to the pH m easurem ent m ode.

The m eter w ill now com pensate pH reading for the

m anually set tem perature. See Figure 19.

NOTE: To exit this program w ithout confirm ing the

m anual tem perature com pensation value,DO NOT press

ENTER in step 6. Press CAL/MEAS instead.

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Figure 17

Figure 19

Ion cal ibrationand

measurement

memoryfunction

pH

ATC

MEAS

C

CAL

C

CAL

C

pH

MEAS

C

setupmode

Figure 16

Figure 18

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pH

ATC

HOLD

C

13

Taking pHMeasurements

Be sure to rem ove the electrode soaker bottle or protective

rubber cap on the electrode before m easurem ent.

To take readings:

1. R inse the probe w ith deionized or distilled w ater before

use to rem ove any im purities adhering to the probe

body. If the pH electrode had dehydrated, soak it for

30 m inutes in O A KTO N electrode storage solution or a

2M -4M KC l solution.

2. Press ON to sw itch on m eter. The MEAS annunciator

appears on the top center of the LC D . The ATC indicator

appears in the low er right hand corner to indicate

Autom atic Tem perature C om pensation if tem perature

probe is plugged. (For M anual Tem perature

Com pensation see page 12)

See Figure 20.

3. D ip the probe into the sam ple. W hen dipping the probe

into the sam ple, the sensor or the glass bulb of the

electrode m ust be com pletely im m ersed into the

sam ple. Stir the probe gently in the sam ple to create a

hom ogenous sam ple.

4. A llow tim e for the reading to stabilize. W hen the

readings stabilize, a READYindicator displays. The

READYm ode show s the readings are stable w ithin a

range of 0.01 pH . W hen this occurs,READYappears

on the top left corner of your display.

See Figure 21.

5. To toggle betw een pH and m V in the pH 510, or to

toggle betw een pH , m V and ion in the Ion 510, press

the MODE key.

HOLDFunction

This feature lets you freeze the value of pH and tem pera-

ture, m V and tem perature or Ion and m V (Ion 510 only).

HOLD can be used anytim e w hen in MEAS m ode.

1. To hold a m easurem ent, Press the HOLD key w hile in

m easurem ent m ode. HOLDw ill appear on the

display. See Figure 22.

2. To release the held value, press HOLD again. C ontinue

to take m easurem ents.

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pH

ATC

MEAS

C

pH

ATC

READY

MEAS

C

setupmode

Figure 20

Figure 21

Figure 22

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4. mV calibration and measurement

mVcalibration

The custom ized LC D display w ill indicate the follow ing:

Display Remarks

MEAS M easurem ent m ode is selected.R.mV U nit of m easurem entC U nit of tem perature m easurem entATC A utom atic Tem perature Com pensation

(if tem perature probe or All-in-O neprobe

is connected)

mVCalibration

1. M ake sure the m eter is ON and if necessary, press the

MODE key to select m V m ode. The m V indicator

appears in the upper right hand corner of the display.

See Figure 23.

2. Press the CAL/MEAS key The CAL indicator appears

above the prim ary display. The prim ary display show s

the relative m V reading and the secondary display

show s the absolute m V value. See Figure 24.

NOTE: If you have never calibrated relative m V or if the

m eter has been reset, the value show n in the prim ary

display is the sam e as the absolute m V value.

3. Press the or keys to enter the relative m V value

that m atches your desired reading. See Figure 25.

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

return to the m easurem ent m ode. The prim ary display

now show s the relative m V reading. The R.mV indicator

appears in the upper hand corner. The m eter autom ati-

cally returns to the m V m easurem ent m ode the ENTER

key is pressed. See Figure 26.

NOTE: N ew m V calibrations w ill over-ride existing the

stored m V calibration data. The m eter retains stored m V

calibrations even w hen the m eter is turned OFF.

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ATC

MEASmV

C

CALmV

CALmV

ATC

MEASR.mV

C

setupmode

Figure 23

Figure 24

Figure 25

Figure 26

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mVMeasurement

1. M ake sure you are in the m V m easurem ent m ode.

Press the MODE key to choose the m V m ode.

2. D ip the electrode into the sam ple. The sensor or glass

bulb of the electrode m ust be com pletely im m ersed

into the sam ple. Stir the electrode gently to create a

hom ogeneous sam ple.

4. Allow tim e for the reading to stabilize. The prim ary

display w ill show the m V reading, and the secondary

display w ill show the current tem perature reading. W hen

the readings stabilize, a READYindicator displays. The

READYm ode show s the readings are stable w ithin

0.1 m V. W hen this occurs,READYappears on the top

left corner of your display.

See Figure 27.

5. To toggle betw een pH and m V in the pH 510, or to

toggle betw een pH , m V and ion in the Ion 510, pressthe MODE key. See Figure 28.

HOLDFunction



HOLD can be used anytim e w hen in MEAS m ode.

1. To hold a m easurem ent, Press the HOLD key w hile in

m easurem ent m ode. HOLDw ill appear on thedisplay. See Figures 29 and 30.



Ion calibrationand

measurement

memoryfunction

ATC

READY

MEASR.mV

C

MEAS

ppm

ATC

HOLD

R.mV

C

HOLDppm

setupmode

Figure 27

Figure 28

Figure 29

Figure 30

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5. Ion calibration and measurement(Ion 510 only)

Ion calibrationThis instrum ent is capable of up to three-point ion calibra-

tion w ith a m inim um of tw o-point calibration. C alibration

values are 0.10, 1.0, 10.0 or 100.0. A ll calibration should

be one decade apart. For exam ple you m ay perform three-

point calibration to 0.10, 1.0 and 10.0, or tw o-point calibra-

tion to 10.0 and 100.0. D o NOT perform tw o-point

calibration to 1.0 and 100.0 the m eter w ill display Er4.

For best accuracy calibrate your m eter to points w ith

sim ilar concentrations to the solutions you w ant to test.

IONCalibrationThe custom ized LC D display w ill indicate the follow ing:

Display RemarksMEAS M easurem ent m ode is selected.ppm U nit of m easurem ent

1. C onnect an Ion S elective E lectrode (ISE) to the B N Cinput connector on the back of the m eter (See page 8)

and turn the m eterON.

2. Press MODE to select ion m easurem ent m ode. If the

m eter has not been previously calibrated in the Ion

m ode, the display w ill read - - -in the prim ary display

See Figure 31.

3. D ip the electrode into the first calibration standard.

M ake sure to start w ith the calibration standard that has

the low est concentration and m ove up to the standards

that have higher concentrations.

4. Press CAL to enter the ion calibration m ode. The CAL

indicator appears above the prim ary display and prim ary

display reads 0.10See Figure 32.

5. The first calibration point of0.10 ppm appears on the

display. If you do NOT w ish 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 .

6. If you DO w ish to calibrate to 0.10 ppm , m ake sure the

electrode is in the 0.10 calibration standard. The m eter

w ill display the m V output of your electrode in the stan-

dard solution in the low er display. A llow the m V reading

to stabilize. W hen the reading stabilizes the READY

indicator w ill appear on the display. See Figure 33.

Stabilization m ay take a few m inutes depending on

electrode and standard concentration. Electrode response

in low concentrations is m uch slow er than response in

high concentrations.

7. Press ENTER to confirm your calibration. The prim ary

display w ill flash for a few seconds See Figure 34.The

m eter w ill m ove on to the next calibration standard of

1.0 ppm.

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CAL

ppm

READY

CAL

ppm

READY

CAL

ppm

setupmode

Figure 31

Figure 32

Figure 33

Figure 34

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8. R inse off the electrode w ith deionized w ater before

placing it in the next calibration standard.

9. A llow m eter to stabilize in the next calibration standard.

W ait for the READYindicator to appear before you

press the ENTER key to confirm the second calibration

point. The prim ary display flashes for a few seconds

then m oves to the next calibration point of10.0 ppm.

If you are perform ing a 2-point ion calibration, press

CAL/MEAS. SLOappears in the prim ary display w ith the

m V indicator, the num ber in the secondary display is the

actual electrode slope in m V. See Figure 35.After a few

seconds the m eter reverts to the m easurem ent m ode. You

are now ready to take ion m easurem ents. If the slope is

outside acceptable lim its or if incorrect standards have been

used the prim ary display w ill show Er3. See Figure 36.

If you are perform ing a 3-point ion calibration, rinse off the

electrode w ith deionized w ater and place it in the next

calibration standard.

10. A llow m eter to stabilize in the next calibration standard.

W ait for the READYindicator to appear before you

press the ENTER key to confirm the third calibration

point. The prim ary display flashes for a few seconds

then SLOappears in the prim ary display w ith the m V

indicator, the num ber in the secondary display is the

average electrode slope in m V. See Figure 35.A fter a

few seconds the m eter reverts to the m easurem ent

m ode. You are now ready to take ion m easurem ent.

NOTES: You m ay com pare the average electrode slope

value w ith the expected slope value for your electrode

from your electrode m anual to verify electrode operation.

If you w ant to leave the calibration m ode prior to confirm ing

tw o calibration points, press the CAL/MEAS key to exit the

calibration m ode. The m eter w ill revert to back to the earlier

calibration curve. If you have calibrated to tw o points press-

ing CAL/MEAS w ill confirm the new calibration

You m ust calibrate to at least tw o points in order for

calibration to take effect. If you only confirm the one

calibration point, the m eter w ill display Er2w hen you

exit the calibration m ode, and the m eter w ill revert back to

the earlier calibration curve.See Figure 37.

N ew ion calibrations w ill over-ride existing the stored ion

calibration data. The m eter retains stored ion calibrations

even w hen the m eter is turned OFF.

Ion calibrations w ill be erased if the pow er cord is

unplugged or pow er is cut off to the A C adapter even if the

m eter is turned off.

mV

READY

CAL

ERR

setupmode

Figure 35

Figure 37

CAL

ERR

Figure 36

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Ion measurement

1. Turn m eterON. Press MODE to select ion

m easurem ent m ode. See Figure 38.

2. Prepare sam ples as necessary (i.e. add Ionic S trength

A djuster). Sam ple preparation varies depending on ion

typesee your electrode m anual for details on the

specific electrode that you are using.

3. D ip electrode into the sam ple. The sensor or glass bulb

of the electrode m ust be com pletely im m ersed into the

sam ple.

4. A llow tim e for the reading to stabilize. W hen the read-

ings stabilize, a READYindicator displays. The READY

indicator show s w hen the readings are stable. W hen

this occurs,READYappears on the top left corner of

your display. The reading holds until the m easured value

fluctuation exceeds the set lim its. See Figure 39.

NOTE: The low er display in the ion m easurem ent m ode

show s m V that correlates to the electrode output. C hange

in m V w ill typically be 59.7 m V for m onovalent ions (1+ or

1- charge) and 29.8 m V for divalent ions (2+ or 2-charge).

HOLDFunction



HOLD can be used anytim e w hen in MEAS m ode.1. To hold a m easurem ent, Press the HOLD key w hile in

m easurem ent m ode. HOLDw ill appear on the

displaySee Figure 40.



HOLDppm

MEAS

ppm

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READY

MEAS

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Figure 38

Figure 39

Figure 40

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6. Memory functions

Memory Input

Your m eter can store up to 50 sets of data in any

com bination of values:

pH 510 meter:

pH and tem perature

m V (or relative m V) and tem perature.

Ion 510 meter:

pH and tem perature

m V (or relative m V) and tem perature.

ion and m V

For exam ple, you can store 32 pH and 18 m V values for the

pH 510 or 15 ion, 12 m V and 23 pH values for the Ion 510.

To store a readings:

1. D uring any m easurem ent or H O LD function, press the

MIkey to input any data into the m em ory

2.MEM, StOand m em ory num ber w ill flash. The

m eter then returns to m easurem ent m ode.

See Figure 41.

NOTE:If the m em ory is full, the first value stored w ill be

erased to create space for the new value.

Memory Recall

This function recalls the previous readings stored in the

m em ory. You can only access M R from the m easurem ent

m ode. M em ory recall is in Last In First O utorder.

To recall readings:

1. Press the MRkey once to retrieve the last reading

stored. The m em ory location screenMEM, LOC

and the m em ory num berw ill flash on the display.

See Figure 42.

2. Press the ENTER key to recall the reading stored

under that m em ory num ber. See Figure 43.

3. Press the ENTER key again to return to the m em ory

location screen. The display autom atically m oves to

the next m em ory location screen. See Figure 44.

4. If necessary, press the key to select the next

m em ory location screen; press the key to select

the previous m em ory location screen.

5. R epeat steps 2-4 to review additional stored data sets.

6. To exit M em ory R ecall, press the MEAS key to return

to the m easurem ent m ode.

NOTES: R eadings stored in m em ory are retained even if

the unit is turned off. To erase all readings stored in

m em ory, see program P1.0 on page 21.

MEM

MEM

MEM

pH

MEM

C

MEM

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Figure 41

Figure 42

Figure 43

Figure 44

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7. Temperature calibration

Temperature CalibrationIn this calibration procedure, the ATC probe is attached

to the m eter and the ATCannunciator displays on

the right hand side of the LC D .See Figure 45.

1. D ip the tem perature probe into a solution of know n

tem perature, such as a tem perature bath for a few

m inutes until the tem perature probe stabilizes.

2. To perform tem perature calibration, you m ust be in the

pH m easurem ent m ode.

3. Press MODE to sw itch to the pH m easurem ent m ode if

you are in the m V or ion m easurem ent m odes.

4. Press CAL/MEAS to enter pH calibration m ode.

See Figure 46.

5. Press MODE again to sw itch to tem perature calibration

See Figure 47.

6. Press and to scroll to the correct tem perature

value corresponding to the know n solution

tem perature. The m eter allow s a lim it of 5C

variation (w ith 0.1C resolution) of the input reading,

and of the original displayed reading.

7. O nce you select the correct tem perature, press ENTER

to confirm . The m eter autom atically returns to the pH

m easurem ent m ode.

NOTE: The m eter w ill not allow input values that exceed

the allow able lim it of 5C of the original displayed

reading.

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pH

ATC

MEAS

C

pH

CAL

pH

ATC

CAL

C

Figure 45

Figure 46

Figure 47

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8. Setup ModeThe advanced SETU P m ode lets you custom ize your

m eters preferences and defaults:

P1.0: M em ory clear (CLr)

P2.0: View ing electrode data (ELE)

P3.0: Selecting buffer sets (bUF)

P4.0: R eset to factory default settings (

rSt)

To enter the SETUPm ode:

1. Turn m eterOFF.

2. W ith m eter off, press and hold the MODE key.

C ontinue to hold dow n the MODE key w hile pressing

and releasing the ON key. The w ill show the SETUP

indicator. See Figure 48.R elease the M O D E key if the

SETUPindicator is present. If the display indicates you

are in the m easurem ent m ode (MEAS indicator) turn

the m eter off and try step 2 again untilSETUP

appears.

NOTE: To exit the SETUPm ode at anytim e w ithout

confirm ing changes press CAL/MEAS until the

m easurem ent m ode reappears. If the m eter is inside a

program , press CAL/MEAS tw o tim es to revert the

m eter to the m easurem ent m ode.

P1.0: Memory ClearU se this program to clear all m em ory values w hen you

need to store a new series of values. This lets you avoid

confusing the old values w ith the new ones.NO is the

default setting.

1. Enter the SETUPm ode as described above. The m eter

autom atically goes to program P1.0.CLr appears in the

prim ary display and P1.0in the secondary display.

See Figure 48.

2. Press the ENTER key to enter program P1.0.

3. Press and keys to toggle betw een NOandYES.

See Figures 49 and 50.

NOretains current m em ory values.

YES clears all m em ory

4. Press ENTER to confirm selection and return to the

SETUPm ode. Press CAL/MEAS to return to the


To continue to the nextSETUPprogram , press the or

keys to select a new program .

SETUP MEM

SETUP MEM

SETUP MEM

Figure 48

Figure 49

Figure 50

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P2.0: Viewing electrode dataThis program lets you check the electrode param eters for

diagnostic purposes.

1. Enter the SETUPm ode as described on page 21. The

m eter autom atically goes to program P1.0.

2. Press and keys to scroll through the program s

until you view ELE in the prim ary display and P2.0in

the secondary display. The electrode annuciator also

appears.

See Figure 51.

3. Press the ENTER key to enter program P2.0. The

secondary display w ill read P2.1

The inform ation you w ill see in program P2.0w ill depend

upon w hich MODE the m eter w as in prior to shutting the

m eter off:

From the pH measurement MODE:

P2.1show s the m V offset of the electrode.

Press ENTER to go to P2.2P2.2show s the slope in % of the electrode.

See Figures 52 and 53.

From the mV measurement MODE:

P2.1show s the m V offset of the electrode

See Figure 54.

From the ion measurement MODE (Ion 510 only):

P2.1show the slope in m V of the electrode

See Figure 55.

4. To exitP2.0program press ENTER untilELE is in the

prim ary display and P2.0is in the secondary display

See Figure 51.press the or keys to select a newprogram O R press CAL/MEAS to return to the


pH

SETUP

pH

mVSETUP

pH

SETUP

%

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R.mVSETUP

mVSETUP

ppm

Figure 51

Figure 52

Figure 53

Figure 54

Figure 55

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P3.0: Selecting buffer setsThis program lets select betw een tw o standard calibration

buffer sets, depending upon your requirem ents.

The available sets are U SA and N IST.

1. Enter the SETUPm ode as described on page 21. The

m eter autom atically goes to program P1.0.

2. Press and keys to scroll through the program s until

you view bUFin the prim ary display and P3.0in the

secondary display. The buffer annuciator also appears.

See Figure 56.


secondary display w ill read read eitherUSA ornSt.

4. Press the and keys to select the buffer set you

require:

U SA buffers:4.01, 7.00 and 10.01

USA in the secondary displaySee Figure 57.

N IST buffers:4.01, 6.86 and 9.18

nStin the secondary displaySee Figure 58.

5. To confirm the buffer set, press ENTER. A ll the

characters on the display w ill flash for about a second

then returns to P3.0.

6. To exitP3.0program press the or keys to select a

new program O R press CAL/MEAS to return to the


P4.0: Resetting to factory default settingsThis program resets and clears all calibration data and

m em ory data EXC EPT the offset value in tem perature

calibration and m anually set tem perature for m anual

tem perature com pensation.NOis the default setting.

1. Enter the SETUPm ode as described on page 21.

The m eter autom atically goes to program P1.0.

2. Press and keys to scroll through the program s

until you view rStin the prim ary display and P4.0in

the secondary display. The m V and pH annuciators also

appear. See Figure 59.


secondary display w ill read NO. See Figure 60.

4. Press the and keys to selectNO orYES. Selecting

YES erases all calibration values for all m odes (pH , m V

and ion) and all m em ory values. See Figures 60 and 61.

5. To confirm the reset, m ake sureYES is selected and

press ENTER. A ll the characters on the display w ill

flash for about a second then the m eter returns to the


NOTE: O nceYES is selected and the ENTER key is

pressed, the reset program clears all old calibration data

and m em ory data. The data is no longer retrievable.

You m ust calibrate the m eter before taking any new

m easurem ents. M eter w ill how ever retain buffer set

selection (N IST or U SA ).

pH

SETUP

SETUP

SETUP

pHmV

SETUP

pHmV

SETUP

pHmV

SETUP

Figure 56

Figure 57

Figure 58

Figure 59

Figure 60

Figure 61

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introduction

9. Electrode Care

Electrode Activation

DO NOT touch or rub the glass bulb. If you follow the

storing and m aintenance procedure, you can use your

electrode im m ediately. If the electrode responds

sluggishly or drifts, the bulb m ay be dehydrated.Im m erse the electrode in an ideal storage solution

such as electrode storage solution or pH 4 buffer solution

for 1-2 hours to hydrate it. See Storing pH/ORP

electrodesbelow .

If this procedure does not hydrate the electrode,

reactivate or replace it.

U se 2 or 3 point calibration to test your electrode

perform ance. If you do not get good readings, use a

different pH electrode to confirm the m eter is w orking

properly. If the results are still not satisfactory, consultyour O A KTO N distributor.

Electrode Maintenance

pH electrodes are susceptible to dirt dehydration and

contam ination. C lean them regularly depending on the

extent and condition of use.

Storing pH/ORP electrodes

For best results, alw ays keep the pH bulb w et, preferably

in pH 4 buffer w ith 1% saturated KC l. O ther pH buffers or

tap w ater are also acceptable storage solutions. D o not

store in de-ionized w ater. The protective rubber cap filled

w ith buffer solution is an adequate m ethod for storing

pH electrodes.

O A K T O N offers a com plete line of low cost electrode

storage and cleaning solutions and containers.

After Use

1. A fter each series of m easurem ents, w ash the

electrode and reference junction in deionized w ater.

2. If using a refillable electrode, close the refilling hole by

returning its rubber sleeve or stopper plug over the

opening in the side of the electrode. See Figure 62.

3. Store the electrode as m entioned above.

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Electrode CleaningElectrodes that are m echanically intact can often be

restored to norm al perform ance by one or a com bination

of the follow ing options.

Som e suggestions for:

a. Salt deposits which are normal on all electrodes.

D issolve the deposit by im m ersing the electrode intap w ater for ten to fifteen m inutes. Thoroughly rinse

w ith de-ionized w ater.

b. General dirt and light oil coatings.

Soak the electrode for several hours in O A KTO N

general purpose electrode cleaning solutions.

R inse in deionized or distilled w ater.

c. Oil/Grease Films

W ash the electrode pH bulb in a little dish w ashing

detergent and w ater. R inse the electrode tip w ith

de-ionized w ater.

d. Clogged reference junction

H eat a dilute 1% KC l solution or pH 4.01 buffer

solution to 60-80C. Place the sensing portion of the

pH electrode into the heated KC l solution for

approxim ately 30 m inutes. A llow the electrode to

cool w hile im m ersed in som e unheated KC l solution

or pH 4.01 buffer solution. R inse w ith deionized w ater.

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Problem Cause Solution

N othing is displayed w hen a. A C outlet pow er not a. Sw itch on the pow er supply

the O N /O F F key is selected. sw itched on.

b. A C adapter socket not b. R e-insert A c adapter socket.

inserted properly.

U nstable reading a. Insufficient reference a. Fill electrode w ith reference

electrolyte in electrode. electrolyte.

b. B roken electrode. b. R eplace electrode.

c. Electrical field c. R em ove or sw itch off

interference (electrical interfering device.

noise caused by a

nearby m otor or

ultrasonic device).

d. D irty electrode d C lean the electrode.

H ydrate if needed.

Slow response a. D irty electrode a. Clean electrode. H ydrate

if needed.

N o response a. H O LD m ode in operation a. C ancel H O LD m ode. Press

from keypad. H old displayed. See LC D . H old button.

b. Internal program error. b. Reset all internal program sby rem oving A /C adapter

from m eter and re-inserting

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Standard pHBuffersThe follow ing table show s the various pH values at

different tem perature of the solution during calibration.

The table also illustrates w hy a calibration value m ay

be different from the buffer value at 25C.

Temperature pH buffer valuesC F 4.01 7.00 10.00

(phthalate) (neutral (carbonate)phosphate)

0 32 4.01 7.12 10.33

5 41 4.01 7.09 10.25

10 50 4.00 7.06 10.18

15 59 4.00 7.04 10.11

20 68 4.00 7.02 10.05

25 77 4.01 7.00 10.00

30 864.01 6.99 9.95

35 95 4.02 6.98 9.92

40 104 4.03 6.98 9.88

45 113 4.04 6.97 9.85

50 122 4.06 6.97 9.82

55 131 4.07 6.98 9.80

60 140 4.09 6.98 9.77

70 158 4.12 6.99 9.73

80 176 4.16 7.00 9.69

90 194 4.20 7.02 9.66

11. Additional Information

pHand TemperatureThe pH electrode is affected by tem perature changes. A utom atic Tem perature

C om pensation (ATC ) com pensates for tem perature changes. Som e solutions show an

increase w hile others a decrease in pH w ith the sam e tem perature change. R ecord the

solution tem perature along w ith the pH value, or the m easurem ent m ay be m eaningless.

Tem perature changes also affect the signal the pH electrode sends to the m eter and causes

a loss of accuracy for the reading. To lim it the loss of accuracy during calibration, m ake the

tem perature of the pH buffer calibrating solutions and the sam ple solution the sam e.

pHBuffer Calibration SolutionU se standard buffer solutions to calibrate a pH m eter before you m easure the pH of a sam -

ple. C alibration solutions serve as basis of com parison betw een m easurem ents. The m ost

com m on standard buffers are the pH 4.01, pH 7.00 and pH 10.01. For 1-point calibration,

use a standard buffer of pH 7.00 or a standard buffer w hose pH value is close to that of the

sam ple. U se 2-point calibration w hen you know the sam ple is acidic (low pH ) or basic (high

pH ). For acidic sam ples, use standard buffers of pH 7.00 and pH 4.01. For basic sam ples,

use standards of pH 7.00 and pH 10.01. U se a 3-point calibration w hen the sam ple pH is

com pletely unknow n. U se all pH 7.00, pH 4.01 and pH 10.01 calibration solutions. C ontact

your O AK TO N distributor for inform ation on pH buffer and calibration solutions.

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12. Specifications

Mode pH510 Ion 510

pH Range 0.0 to 14.0 pHResolution 0.01 pH

Accuracy 0.01 pH

Calibration 1 to 3 points

U SA : 4.01, 7.00, 10.01

N IST: 4.01, 6.86, 9.18

mV Range -1999 to 1999 m VResolution 0.1 m V betw een 199.9 m V

1 m V beyond 199.9 m V

Accuracy 0.2 m V betw een 199.9 m V2 m V beyond 199.9 m V

Calibration O ffset up to 150 m V

Ion Range 0.01 to 1999 ppmResolution 0.01 ppm for 0.01 to 0.99 ppm

0.1 ppm for 1.0 to 199.9 ppm

1 ppm for 200 to 1999 ppm

Accuracy 0.5% of full scale for m onovalent ions1% of full scale for divalent ions

Calibration 2 to 3 points0.1, 1, 10, 100 ppm

Minimum slope 15 m V

Maximum slope 90 m V

Temp Range 0 to 100CResolution 0.1C

Accuracy 0.3C

Calibration O ffset in 0.1C increm ents; O ffset range: 5C

Temperature compensation:autom atic (ATC ) or m anual from 0 to 100COperating temperature:0 to 50C

Power: 9V D C adapter for 110 or 220 VA C

Display: D ual LC D

Connectors: pH /m V/Ion uses B N C connector, tem perature uses

m ini-phono plug, recorder uses m ini-pin (sub-m ini phono plug)

Memory: Stores up to 50 readings

Recorder Output: 1999 m V directly proportional to input

Power Requirements: 110 or 220 VA C depending upon m odel.

Input Impedance: 10 12

Instrument Drift: < 50 uV/C

Input Bias Current: 50 pA m ax. at 25C

Hold function: YES

ATC Function: 0.0 to 100.0C

READY Indicator: YES

Meter Dimensions: 7.2L x 9.2W x 2.52H (180 x 230 x 63 m m )

Shipping weight: 1.4 lbs (0.64 kg)

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13. AccessoriesTo order som e accessories, contact your O A KTO N

distributor and describe the item s listed below .

WD-35613-05 ATC probe

WD-35615-07 110 VA C adapter

WD-35615-08 220 VA C adapter

WD-35801-00 O A KTO N general purpose pH electrode

WD-35805-04 O A KTO N general purpose double junction

refillable liquid filled pH electrode. G lass

body.

WD-35805-15 O A KTO N general purpose double junction

O R P electrode. Epoxy body.

WD-35811-71 O A KTO N A ll-in-O ne single junction sealed

gel filled general purpose pH electrode

w ith tem perature sensor. Epoxy body.

WD-00654-00 pH 4.01 buffer calibration solution, 1 pint



WD-35653-00 D e-ionized rinse w ater pouches 20/box

WD-35653-01 pH 4.01 buffer calibration solution pouches

20/box

WD-35653-02 pH 7.01 buffer calibration solution pouches

20/box

WD-35653-03 pH 10.00 buffer calibration solution

pouches 20/box

WD-35653-04 B uffer pouches assortm ent pack,

5 each pH 4, 7, 10 and rinse w ater

setupmode

8/9/2019 pH510_Ion510mnl

30/30

14. WarrantyO A KTO N w arrants this m eter to be free from significant

deviations in m aterial and w orkm anship for a period of

three years from date of purchase. O A KTO N w arrants this

probe to be free from significant deviations in m aterial and

w orkm anship for a period of six m onths from date of

purchase. If repair or adjustm ent is necessary and has notbeen the result of abuse or m isuse w ithin the w arrantied

tim e period, please returnfreight prepaidand correction

w ill be m ade w ithout charge. O A KTO N alone w ill deter-

m ine if the product problem is due to deviations or cus-

tom er m isuse.

15. Return of itemsA uthorization m ust be obtained from our C ustom er Service

D epartm ent before returning item s for any reason. W henapplying for authorization, please include data regarding the

reason the item s are to be returned. For your protection,

item s m ust be carefully packed to prevent dam age in ship-

m ent and insured against possible dam age or loss. W e w ill

not be responsible for dam age resulting from careless or

insufficient packing. a restocking charge w ill be m ade on all

unauthorized returns.

NOTE: W e reserve the right to m ake im provem ents in

design, construction, and appearance of products w ithout

notice

mV calibrationand

measurement

warranty

accessories

specifications


troubleshooting

electrodecare


pH calibrationan d

measurement

starting up

introduction

memoryfunction

Ion calibrationand

measurement

setupmode

pH510_Ion510mnl

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