Oakton pH/CON 510 series User manual

pH/mV/Conductivity/TDS/°C/°F meter
ON/OFF
MEAS
HOLD
▲
▼
CAL
MODE
SET
pH/CON 510 series
RANGE
ENTER
pH/CON510
BenchtopMeter
WD-35610-10, -12, -15, -17
pH/CON510meter
10/00 ©2000 68X090817

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Starting up ..........................................................................4-8
Keypad ..............................................................................4
Display ..............................................................................5
Electrode holder arm ....................................................6-7
Probe connections............................................................8
Power connections ..........................................................8
Calibration ..........................................................................9-14
Important information on meter calibration ....................9
pH calibration ............................................................10-11
Conductivity/TDS calibration......................................12-13
Temperature calibration..................................................14
Measurement....................................................................15-21
pH measurements..........................................................15
mV measurements ........................................................16
Conductivity /TDS measurements ................................17
HOLD function/Ready indicator/Auto endpoint ............18
Using manual ranging function: conductivity/TDS ........19
Selecting manual temperature compensation:
conductivity /TDS......................................................20
Selecting a manual temperature compensation value..21
Advanced Setup mode..................................................23-37
Advanced setup mode overview..............................23-25
P1.0: Viewing previous pH calibration data ..................26
P2.0: Viewing pH electrode data....................................27
P3.0: pH configuration ..............................................28-29
P3.1: Ready indicator and auto endpoint functions 28
P3.2: Selecting number of pH calibration points ....28
P3.3: Selecting NIST or USA buffer sets ................29
P3.4: Selecting °C or °F............................................29
P4.0: Resetting to factory default settings (pH) ............30
P5.0: Viewing previous con./TDS calibration data ........31
P6.0: Viewing con./TDS probe data ..............................32
P7.0: Conductivity/TDS configuration ......................33-35
P7.1: Ready indicator and auto endpoint functions 33
P7.2: Selecting °C or °F............................................34
P7.3: Selecting Automatic/Manual temp. comp. ....34
P7.4: Setting the TDS factor ....................................35
P8.0: Temperature settings............................................36
P8.1: Selecting the temperature coefficient............36
P8.2: Selecting the normalization temperature ......36
P9.0: Resetting to factory default settings (con./TDS)..37
Probe Care ..................................................................................38-39
Electrode activation ........................................................38
Electrode maintenance ..................................................38
Storing pH/ORP electrodes............................................38
Electrode cleaning ..........................................................39
Conductivity/TDS probe care..........................................39
Troubleshooting ..............................................................40-41
Error messages ..............................................................40
Troubleshooting ..............................................................41
Specifications........................................................................42
Accessories ..........................................................................43
Appendix 1: Conductivity to TDS conversion factors ....44
Appendix 2: Calculating temperature coefficients ........45
Appendix 3: pH and temperature......................................46
Appendix 4: Meter factory default settings ....................47
Warranty ................................................................................48
Return of Items....................................................................48
3
Quick tip
let the mini table of contents in the outer
margins of this manual guide you instantly to
the right section
setup
mode
Tableofcontents

4
pH/mV/Conductivity/TDS/°C/°F meter
ON/OFF
MEAS
HOLD
▲
▼
CAL
MODE
SET
1.Startingup
Thank you for purchasing an OAKTON®pH/CON 510
benchtop meter. This multiparameter meter reads pH, mV,
Conductivity, Total Dissolved Solids (TDS), and temperature
(°C or °F). It is microprocessor controlled, user-friendly and
reliable.
Keypad
See Figure 1.
A large membrane keypad makes the meter easy to use.
Names and symbols describe the function button controls.
ON/OFF
Powers the meter ON/OFF. When the meter is switched on,
it starts in the mode the meter was last in when powered
down.
ENTER/RANGE
ENTER Press to confirm values in Calibration mode and to
confirm selections in Setup mode.
RANGE Press to switch to manual ranging in Conductivity or
TDS mode.
CAL/MEAS
Toggles user between Calibration and Measurement mode.
Example: If you are in pH measurement mode, press
CAL/MEAS to enter pH calibration mode.
NOTE: Temperature calibration is available from pH, TDS, or
Conductivity calibration mode; see page 14 for directions.
In Set up mode : Press CAL/MEAS to return to main menu
from sub menus. Press CAL/MEAS again to return to mea-
surement mode from main menu.
HOLD
Freezes the measured reading. To activate, press HOLD
while in measurement mode. To release, press HOLD again.
NOTE: When auto endpoint feature is switched on, meter
automatically holds reading after 5 seconds of stability. The
HOLD indicator appears on the display. Press HOLD to
release auto endpoint feature.
MODE
Measurement: Press MODE to toggle between pH, mV,
conductivity and TDS.
Calibration: In calibration mode, press MODE to access
temperature calibration.
SET
Enters advanced set up mode. SETUP mode lets you
customize meter preferences and defaults, and view
calibration and probe data.
▲/▼
Press in Setup mode to scroll through subgroups. Also lets
you increment/decrement the values in the conductivity, TDS
and temperature calibration modes.
Figure 1
ON/OFF
RANGE
HOLD
▲
▼
ENTER
MODE
SET
MEAS
CAL
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Figure 2
Display
See Figure 2.
The OAKTON®pH/CON 510 meter features a large dual
display that shows the measured parameter in the primary
display, plus temperature in °C or °F in the secondary
display. It also features mode annunciators that describe
the meter’s functions.
mS
ATC
READY
MEAS CAL
HOLD
ERR F
SETUP
ON
OFF C
µS
pH
mV
pH
ppt
ppm
K=
Primary display
Secondary display
3.
2.
19.
18.
13.
15.
14.
12.
1.
17.
16.
4.
6.
5.
9.
11.
10
7.
8.
1. SETup mode indicator
2. MEASurement mode
indicator
3. CALibration indicator
4. mV indicator
5. pH measurement indicator
6. Millisiemens indicator
7. Microsiemens indicator
8. Parts per thousand (Total
Dissolved Solids) indicator
9. Parts per million (Total
Dissolved Solids) indicator
10. Temperature indicators
11. pH setup indicator
12. Automatic Temperature
Compensation indicator
13. ERRor indicator
14. Probe indicator
15. Calibration indicator
16. Cell constant indicator
17. ON/OFF indicator
18. HOLD indicator
19. READY indicator
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ElectrodeHolderArm
The electrode holder is included in the same
box as the meter.
Toattachtheelectrodeholdertothemeter:
1. The electrode holder base attached to
the bottom of the meter comes in the ship-
ping position.
See Figure 3.
2. Use a Phillips screwdriver to remove the
screw holding the electrode holder in ship-
ping position.
See Figure 3.
3. Slide the electrode base away from the
meter until the second screw slot lines
up with the original screw hole. Use the
screw removed earlier to secure
electrode holder base into position.
See Figure 4.
4. The electrode holder arm is reversible. If
desired, remove screw holding electrode
holder base and slide base out of
brackets. Slide base into brackets on oppo-
site side and replace screw.
See Figure 5.
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 meter back
to the upright position.
See Figure 6.
6. Line up the hole on the base of the
electrode holder arm with 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 swing into
desired position.
See Figure 8.
pH/mV/Conductivity/TDS/°C/°F meter
ON/OFF
MEAS
HOLD
▲
▼
CAL
MODE
SET
pH/CON 510 series
RANGE
ENTER
The electrode arm is
now ready to swing into
desired position.
Figure 8
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Probeconnections
See Figure 9 .
Your meter includes two probes:
• pH electrode with BNC connector
• conductivity/TDS/temperature probe with a notched
6-pin connector
The temperature sensing element built into the conductiv-
ity/TDS probe will also compensate for pH readings as long
as both probes are in your solution at the same time.
If you want to use an “All in One” pH probe with a built-in
temperature element, or if you want to use a separate
temperature probe, you will need to disconnect the
conductivity/TDS probe to allow for connection of the
separate temperature sensor.
You can use any standard pH, mV (ORP) or Ion Selective
electrode with a BNC connector with this meter.
Conductivity/TDS probes, “All in One” pH electrodes with a
built-in temperature element, and separate temperature
probes require a probe with a notched 6-pin connector.
For replacement probes, see the “Accessories” section,
page 43.
To connect the pH electrode:
1. Slide the BNC connector of the probe over the BNC
connector socket on the meter. Make sure the slots of
the connector are in line with the posts of the socket.
Rotate and push the connector clockwise until it locks.
2. To remove probe, push and rotate the connector
counterclockwise. While holding onto the metal part of
the connector, pull probe away from the meter.
To connect the conductivity/TDS/temperature probe:
1. Line up the notch and 6 pins on the meter with the holes
in the 6-pin connector. Push down and turn the locking ring
clockwise to lock into place.
2. To remove probe, turn locking ring counterclockwise on
the probe connector. Pull probe away from the meter.
NOTE: follow the same directions to connect an optional sep-
arate temperature element.
Powerconnections
See Figure 9 .
Your meter includes an AC to DC adapter:
To connect the AC adapter:
1. Slide the phono plug of the AC adapter into the “DC” slot
on the back of the meter.
Attention!
Do not get water on the connectors
during operation. Avoid touching
the connector with soiled or wet
hands. Do not pull on the probe
cord or the probe wires might
disconnect.
Figure 9
CON/TEMP pH DC
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9
2.Calibration
ImportantInformationonMeterCalibration
When you recalibrate your meter, old calibration points are
replaced on a “point by point” basis in pH, and on a “range
by range” basis in conductivity or TDS.
For example:
• pH: if you previously calibrated your meter at pH 4.01,
7.00, and 10.01, and you recalibrate at pH 7.00, the meter
retains the old calibration data at pH 4.01 and pH 10.01.
• Conductivity/TDS: if you previously calibrated your meter at
1413 µS in the 0 to 1999 µS range and you recalibrate at
1500 µS (also in the 0 to 1999 µS range), the meter will
replace the old calibration data (1413 µS) in that range. The
meter will retain all calibration data in other ranges.
Note that if you calibrate a TDS value in an equivalent
conductivity range, the TDS value will replace the previous
conductivity value, and vice versa.
To view current calibration points:
• pH: Program P1.0 in the SETUP section, page 26.
• Conductivity/TDS: Program P5.0 in the SETUP section,
page 32.
To completely recalibrate your meter, or when you use a
replacement probe, it is best to clear old calibration data by
resetting the meter.
To reset the meter to its factory defaults:
• pH: Program P4.0 in the SETUP section, page 30.
• Conductivity/TDS: Program P9.0 in the SETUP section,
page 37.
NOTE: Resetting the meter will set meter to factory
defaults. Conductivity/TDS and pH must be reset separately.
PreparingtheMeterforCalibration
Before starting calibration, make sure you are in the correct
measurement mode. When you switch on the meter, the
meter starts up in the units last used. For example, if you
shut the meter off in "pH" units, the meter will read "pH"
units when you switch the meter on.
Do not reuse calibration solutions after calibration.
Contaminants in the solution can affect the calibration, and
eventually the accuracy of the measurements. See page 43
for information on our high-quality calibration solutions.
More information
• See section 2.1 (pages 10-11) for pH calibration
• See section 2.2 ( pages 12-13) for
conductivity/TDS calibration
• See section 2.3 (page 14) for Temperature
Calibration
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10
pHcalibration
We recommend that you perform at least a 2-point calibra-
tion using standard buffers that bracket (one above and one
below) the expected sample range.
PreparingforpHcalibration
This meter is capable of up to 5-point pH calibration to
ensure accuracy across the entire pH range of the meter.
The meter automatically recognizes and calibrates to these
standard buffer values, which makes pH calibration faster
and easier.
Select from the following buffer options:
USA: pH 1.68, 4.01, 7.00, 10.01, and 12.45.
NIST: pH 1.68, 4.01, 6.86, 9.18, and 12.45.
To select the buffer set, see Setup Program P3.3 on
page 29.
The pH/CON 510 meter also lets you select the number of
pH calibration points the meter will use in calibration mode:
2, 3, 4, or 5. The meter will automatically exit calibration
mode after you have calibrated to your selected number of
points. See Setup Program P3.2 on page 28.
Beforestarting
Be sure to remove the protective electrode storage bottle or
rubber cap of the probe before calibration or measurement.
If the electrode has been stored dry, wet the probe in tap
water for 10 minutes before calibrating or taking readings to
saturate the pH electrode surface and minimize drift.
Wash your probe in deionized water after use, and store in
electrode storage solution. If storage solution is not avail-
able, use pH 4.0 or 7.0 buffer. DO NOT store electrode in
distilled or deionized water.
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TocalibratepH:
1. If necessary, press the MODE key to select pH
measurement mode. The pH indicator appears in the
upper right hand corner of the display.
See Figure 10
2. Rinse the pH electrode thoroughly with de-ionized water or
a rinse solution. Do not wipe the probe; this causes a build-
up of electrostatic charge on the glass surface.
3. Dip the pH electrode into the standard calibration buffer
(see page 10 for list of possible buffers). The end of the
probe must be completely immersed into the sample.
Stir the probe gently to create a homogeneous sample.
NOTE: The temperature element is in the conductivity/TDS
cell. For temperature compensated readings, dip the
conductivity/TDS cell into the calibration buffer as well.
4. Press CAL/MEAS to enter pH calibration mode. The
CAL indicator lights. The primary display will show the
measured reading while the smaller secondary display will
indicate the pH standard buffer solution.
See Figure 11
5. Wait for the measured pH value to stabilize. If the
READY indicator has been activated (set up program
P3.1—see page 28), the READY annunciator lights when
the reading is stable.
6. Press ENTER to confirm calibration. The meter is now
calibrated to the current buffer. The lower display scrolls
through the remaining buffer options.
• If you are performing multipoint calibration, go to step 7.
• If you are performing one-point calibration, go to step 9.
7. Rinse the electrode with de-ionized water or a rinse
solution, and place it in the next pH buffer.
8. Follow steps 5 to 8 for additional calibration points.
9. When calibration is complete, press CAL/MEAS to return
to pH measurement mode.
See Figure 12
Notes
To exit from pH Calibration mode without confirming
calibration, DO NOT press ENTER in step 6. Press
CAL/MEAS instead.
If the selected buffer value is not within ±1.0 pH from the
measured pH value: the electrode and buffer icon blink and
the ERR annunciator appears in the lower left corner of the
display.
To select USA or NIST buffer sets, see Set up Program P3.3
on page 29.
To limit the number of pH buffer values available during cali-
bration, see Set up program P3.2 on page 28.
ATC
READY
MEAS
C
pH
READY
CAL pH
pH
ATC
READY
MEAS
C
pH
Figure 10
Figure 11
Figure 12
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