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Instruction Manual
pH 700 pH/mV/°C/°F Bench Meter
Ion 700
Part of Thermo Fisher Scientific 68X541701 Rev.3 Nov 2010
pH/mV/Ion/°C/°F Bench Meter
Tech nol o
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TABLE OF CONTENTS
1. INTRODUCTION.............................................................. 1
2. GETTING STARTED........................................................ 2
2.1 Keypad Functions ...................................................................2
2.2 LCD Annunciators...................................................................3
2.3 Meter Connections..................................................................3
3. CALIBRATION................................................................. 4
3.1 pH Calibration .........................................................................4
3.2 Temperature Calibration .........................................................5
3.3 Millivolt (mV) Offset Adjustment..............................................6
3.4 Ion Calibration (Ion 700 Only) .................................................6
4. STORING AND RECALLING DATA ............................... 7
5. SETUP FUNCTIONS........................................................ 8
5.1 P1.0 CAL (Calibration)............................................................8
5.2 P2.0 ELE (Electrode Information)............................................8
5.3 P3.0 ConF (Configuration)......................................................9
5.4 P3.1 rdY (Ready / Stability Indicator)......................................9
5.5 P3.2 °C°F (Celcius Or Fahrenheit)..........................................9
5.6 P3.3 buFF (pH Buffers & Calibration Points)...........................10
5.7 P4.0 rSt (Reset) .....................................................................10
5.8 P5.0 CLr (Clear Memory).......................................................10
6. TROUBLESHOOTING GUIDE......................................... 11
7. ION SELECTIVE ELECTRODES..................................... 13
8. SPECIFICATIONS............................................................ 14
9. WARRANTY..................................................................... 15
10. RETURN OF ITEMS......................................................... 15
1. INTRODUCTION
Thank you for purchasing our pH 700 / Ion 700 series benchtop
meter. These microprocessor-based meters are economical and
simple to use. The design incorporates a large LCD for clear
viewing, yet offers a small footprint to conserve space.
The pH 700 measures pH, mV (ORP), and temperature (ºC or ºF).
In addition to these parameters, the Ion 700 features direct ion
concentration measurement of various ions (mono and divalent).
Each meter includes a convenient slide-out card for
quick reference.
Some configurations include an electrode arm and metal bracket
which can be easily attached to the left or right side of the meter
according to your preference.
The 700 series benchtop meters replace our popular 510 series
meters that were introduced in 2000.
We take great pride in every instrument we manufacture and
hope this one serves you well.
1
2. GETTING STARTED
2.1 Keypad Functions
Powers the meter on and off. Upon power on, the meter
automatically begins in the mode that was last used.
Calibration and memory values are retained even if meter
is unplugged.
Toggle between available measurement modes;
pH/Temp, mV/Temp, or ppm/mV (Ion 700 only).
Also used to switch from pH to Temp during pH
calibration mode.
Press and hold for 5 seconds to enter SETUP mode.
Toggles between measurement and calibration modes.
In SETUP mode, returns user to the measurement mode.
MI (Memory Insert) stores values into memory.
S Increase value. Scroll up in SETUP mode.
MR (Memory Recall) recalls values from memory
T Decrease value. Scroll down in SETUP mode.
Freezes measured reading. Press again to resume
live reading.
Confirms calibration values in CAL mode.
Confirms selections in SETUP mode.
View recalled values in memory mode.
2
2.2 LCD Annunciators
2.3 Meter Connections
pH
REF
ATC
DC
BNC connection for pH, ORP (Redox), or Ion Selective
Electrodes (ISE).
Pin connection for half cell reference electrodes.
Requires separate half cell BNC electrode.
Note: REF is not commonly used and is not required.
For Automatic Temperature Compensation probe.
Power supply.
3
3. CALIBRATION
3.1 pH Calibration
For best results, periodic calibration with known accurate standards is
recommended. Calibrate with standards that bracket your intended
measuring range while including a neutral standard (pH 7.00 or 6.86).
For example, if you expect to measure samples from pH 6.2 to pH 9.5,
calibration with 4.01, 7.00, and 10.01 will work well.
The 700 series meters can be calibrated with up to 5 buffers. The
non-volatile memory retains all calibration values upon meter shut down.
The following calibration standards are automatically recognized;
To eliminate temperature errors associated with the pH electrode, attach
the automatic temperature compensation (ATC) probe for best accuracy.
Without temperature compensation, pH accuracy will worsen as samples
deviate from 25ºC and pH 7.
USA buffer group 1.68, 4.01, 7.00, 10.01, 12.45
NIST buffer group 1.68, 4.01, 6.86, 9.18, 12.45
See Section 5.6 to change the buffer group
1) Press
2) Dip the pH and ATC electrodes into pH buffer and press
The secondary display will lock on the appropriate buffer value. Provide
stirring for best results. When the READY indicator appears, press
to accept. The primary reading will flash briefly before the secondary
display begins scrolling the remaining available buffers.
3) Rinse the pH and ATC electrodes then dip into the next pH buffer. The
secondary display will lock on the appropriate buffer value. When the
READY indicator appears, press
will flash briefly then display the percent efficiency (slope) before the
secondary display begins scrolling the remaining available buffers.
as needed to select pH.
to accept. The primary reading
4
4) To calibrate another buffer repeat step 3) or press to return to the
measurement mode. Note: The meter will automatically return to
measurement mode upon successful completion of the number of
specified calibration points. To specify a different number of pH
calibration points see Section 5.6.
Additional notes:
A single point (offset) calibration is only allowed with pH 7.00 or
pH 6.86 buffers.
When the first calibration value is accepted during a new calibration,
all prior calibration values are erased.
Press
mode.
3.2 Temperature Calibration
The thermistor sensor used for automatic temperature compensation and
measurement is both accurate and stable, so require frequent calibration
isn’t required. Temperature calibration is recommended upon electrode
replacement, whenever the temperature reading is suspect, or if matching
against a certified thermometer is desired.
at any time to abort calibration and return to measurement
1) Connect the temperature probe to the meter and place into a solution
with a known accurate temperature such as a constant temperature
bath. Note: To adjust the manual temperature compensation (MTC)
value, do not connect the temperature probe.
2) Press
3) Press
measured temperature while the secondary displa y shows the factory
default temperature.
4) Adjust the temperature using
to cancel. The meter allows an adjustable maximum value of ± 5ºC
(or ± 0.9
as needed to select pH or mV/R.mV.
followed by . The primary display shows the
or . Press to accept or
º
F) from the factory default temperature.
5
3.3 Millivolt (mV) Offset Adjustment
Oxidization Reduction Potential (ORP or Redox) is not a precise
measurement, but is useful as a relative indicator. As such, mV offset
adjustment is not meant to enhance accuracy, but rather to make readings
comparable to a reference. Commercial ORP solutions are often used as
a check standard in which a meter/electrode system are verified to be
close to a given value, instead of being used as a calibration standard in
which adjustments are made in an attempt to match the ORP value.
1) Con nect an ORP electrode and press as needed to select mV
(or R.mV).
2) Dip the ORP electrode into a solution with a known mV value
(i.e. Zobel, Light’s, quinhydrone, or iodidetriiodide) and stir.
3) Press
relative millivolt value (R.mV) while the secondary display shows the
factory default mV value.
4) Adjust the R.mV value using
cancel. The meter allows an adjustable maximum value of ± 150 mV
from the factory default mV value.
Note: When an offset has been stored successfully, R.mV replaces mV.
3.4 Ion Calibration (Ion 700 Only)
The Ion 700 can measure ion concentration such as ammonia or fluoride
when using an ion selective electrode (ISE) for the specific ion of interest.
The available ion calibration values are 0.10, 1.0, 10.0, 100.0, and 1000
parts per million (ppm). Choose a minimum of 2 consecutive values for
calibration and prepare the corresponding ion calibration solutions. F or
best results always begin with your lowest standard value, followed by
the next lowest standard.
when the reading is stable. The primary display shows the
or . Press to accept or to
6
1) Con nect the ISE and press as needed to select ppm. Note: The
primary reading will show “- - - -” without a stored ion calibration. The
secondary value is the corresponding mV reading of the ISE.
2) Dip the ISE into your lowest standard solution value and stir. Press
when the secondary reading is stable.
3) Press
ion calibration value (0.10, 1.0, 10, etc).
4) Press
next highest calibration standard value.
5) Rinse th e ISE then dip into the corresponding calibration standard
and stir.
6) Press
be displayed briefly if the calibration is successful. “SLP Err” indicates
that the calibration for the current point was not successful. This occurs
when the slope (mV difference between two consecutive points) is
lower than 15mV/decade or higher than 90mV/decade.
7) Revert to step 3) to calibrate additional points or press
to return to measurement mode at any time. Note: The meter will
automatically return to measurement mode upon successful completion
of the number of specified calibration points. To change the number of
ion calibration points see Section 5.6.
or to match the primary display to your corresponding
to accept or to abort. The primary display will show the
to accept or to cancel. The mV/decade slope value will
as needed
4. STORING AND RECALLING DATA
The 700 series meters can retain up to 100 points into memory for
later retrieval.
1) In the measurement mode, press
memory. The stored memory location value (StO) is briefly displayed.
to insert the measured value into
7
2) To recall data from memory, press . The location of the most recent
stored data is displayed first. Press
the desired data, then press to accept.
3) Press to return to the stored data location. Press to return to
measurement mode. To erase stored data, see Section 5.8.
or to select the location of
5. SETUP FUNCTIONS
Use the set up mode to customize your instrument operation. During
measurement, press and hold
Press
Press
Press
5.1 P1.0 CAL (Calibration)
5.2 P2.0 ELE (Electrode Information)
or to change programs or change options.
to select the program or confirm selection.
to go back a level or to return to measurement mode.
Press to view each stored calibration point.
Press
Press
to view mV offset (OFS) in mV and pH modes only.
to view % slope (SLP) in pH and Ion modes only.
Last Display
Mode
pH in mV %
Ion - in mV
mV in mV -
for 5 seconds to enter SETUP mode.
Electrode Property
Offset Slope
8
Note: When multiple slopes exist, the slope that is available to view will
depend on the measured value before entering SETUP mode.
For example, if pH calibration values pH 4.01, 7.00 and 10.01 were
completed, there will be two slope values; one that corresponds to pH
values below 7.00 and another that corresponds to pH values above 7.00.
If the measured pH value was 5.23 when setup mode was entered, the pH
slope that corresponds to values lower than 7.00 will be available to view.
If no calibration is stored, the offset will be 0.0 mV and the slope is 100%.
5.3 P3.0 ConF (Configuration)
Press
5.4 P3.1 rdY (Ready / Stability Indicator)
Press
Press or to choose READY “On”, READY “OFF”, or
Auto HOLd.
Press
5.5 P3.2 ºCºF (Celcius Or Fahrenheit)
Press
Press
Press
.
.
to confirm.
.
or to select ºC or ºF.
to confirm.
9
5.6 P3.3 buFF (pH Buffers & Calibration Points)
Press
Press
(pH mode only).
Press
(pH and Ion only).
Press
.
or to select “USA” or “NIST” buffer group
or to select number of Calibration Points
to confirm.
5.7 P4.0 rSt (Reset)
Press .
Press
If “Yes”, press
“FCt” (complete reset to factory default settings).
Press
5.8 P5.0 CLr (Clear Memory)
Press
Press
Press to confirm.
or to select “Yes” or “No”.
or to select “Cal” (calibration reset only) or
to confirm.
.
or to select “Yes” (erase memory) or “No”.
10
6. TROUBLESHOOTING GUIDE
PROBLEM CAUSE SOLUTION
No display a) Main power not
Unstable
reading
Slow
response
Meter not
responding
to key press
switched on.
b) AC Adapter
socket not
inserted
properly.
a) Insufficient
reference
electrolyte in
electrode.
b) Broken
electrode.
c) External ‘noises’
or induction
(e.g. electrical
‘noise’ caused
by a nearby
motor).
d) Dirty electrode. d) Clean & rehydrate the electrode.
a) Dirty electrode. a) Clean & rehydrate the electrode.
a) HOLD mode
in operation.
b) Bad keypad.
a) Switch on the power supply.
b) Re-insert AC Adapter & press
a) Fill electrode with reference electrolyte.
b) Replace electrode.
c) Remove or switch off interfering device.
a) Press
to disable Auto Hold feature if enabled.
b) Contact Technical Service.
to deactivate. See SETUP
.
11
PROBLEM CAUSE SOLUTION
From any screen
Ion CAL mode Ion slope calibration error;
Ion CAL mode Calibration points
Ion CAL mode Calibration attempted
pH CAL mode Calibration attempted
Err with electrode
icon
Ur (Under range)
Or (Over range)
Invalid key;
Button does not
work in the current
operation mode.
calibration solutions are
outside acceptable range
(15 to 90 mV per decade).
are more than 1
decade apart.
with only 1-point during
ion calibration.
using only 1-point that
was not pH 7 (USA) or
pH 6.86 (NIST).
Calibration error.
Buffer value does not
match value displayed or
electrode is disconnected
or failing.
Measured value is out
of range.
Electrodes not connected.
Electrode clogged, dirty
or broken.
Meter not calibrated.
Wrong temp value.
Press alternate key.
Select valid buttons
depending on mode.
Recalibrate using fresh ion
solutions. Use required ISA.
Replace electrode.
Recalibrate using
consecutive calibration
values 1 decade apart
(ex. 1.0 and 10.0).
Recalibrate using 2 or more
ion calibration points.
Recalibrate using 2 or more
pH points or use pH 7 (USA)
or use pH 6.86 (NIST).
Use fresh buffer solutions.
Check electrode connection.
Clean & recondition
electrode.
Replace electrode.
Make sure electrode is
connected.
Clean or replace electrode.
Recalibrate the meter.
Treat samples to bring
within meter measuring
range.
Reset meter.
12
7. ION SELECTIVE ELECTRODES
Contact our partners for more details regarding ISE and related solutions.
The table below lists the most common electrodes available.
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
13
8. SPECIFICATIONS
pH Range -2.00 to 16.00 pH
Resolution 0.01 pH
Accuracy
Calibration Points Up to 5 points with Auto-buffer recognition
Buffer Options
Slope Display Yes (with offset)
mV Range
Resolution
Accuracy
Offset Adjustment Up to ±150 mV
Temperature Range 0.0 to 100.0 ºC / 32.0 to 212.0 ºF
Resolution 0.1 ºC / ºF
Accuracy
Compensation Automatic or Manual (0 to 100 ºC / 32 to 212 ºF)
Calibration
Ion Range (Ion 700
only)
Resolution (ppm) 0.01/ 0.1/1 ppm
Accuracy
Calibration Points
Slope Range 15 mV/decade to 90 mV/decade
Memory 100 data sets
Inputs BNC, ATC, Reference (Half-cell)
Power AC/DC 9V, 6W Adapter (100/240 VAC, 50-60Hz)
Offset in 0.1 º increments; Offset range: ± 5.0 ºC / 9.0 ºF
USA : pH 1.68, 4.01, 7.00, 10.01,12.45
NIST: pH 1.68, 4.01, 6.86, 9.18 ,12.45
0.1 mV (± 199.9 mV), 1 mV beyond ± 200 mV
± 0.2 mV (± 199.9 mV), ± 2 mV beyond ± 200 mV
± 0.3 ºC/± 0.5 ºF (0 to 70 ºC)
0.01 to 2000 ppm ( ± 2000mV)
±0.5% FS (mono-valent) ±1.0% Full Scale
From 2 to 5 consecutive points;
0.1, 1.0, 10.0, 100.0 or 1000.0 ppm
± 0.01 pH
± 2000 mV
(di-valent)
14
9. WARRANTY
This meter is supplied with a warranty against significant deviations in
material and workmanship for a period of THREE years from date of
purchase whereas probe with a SIX month warranty.
If repair or adjustment is necessary and has not been the result of abuse
or misuse within the designated period, please return – freight prepaid –
and correction will be made without charge. Eutech Instruments/Oakton
Instruments will determine if the product problem is due to deviations or
customer misuse.
Out of warranty products will be repaired on a charged basis.
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 Authorization” (RGA) form is available through our authorized
distributor. Please include data regarding the reason the items are to be
returned. For your protection, items must be carefully packed to prevent
damage in shipment and insured against possible damage or loss.
Eutech 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 /Oakton Instruments reserve the right
to make improvements in design, construction, and appearance of
products without notice.
15
For more information on our products, please contact our channel
partner or visit our websites listed below:
Oakton Instruments
625 E Bunker Court
Vernon Hills, IL 60061
USA
Tel: (1) 888-462-5866
Fax: (1) 847-247-2984
info@4oakton.com www.4oakton.com
Distributed by:
Eutech Instruments Pte Ltd
Blk 55, Ayer Rajah Crescent,
#04-16/24
Singapore 139949
Tel: (65) 6778 6876
Fax: (65) 6773 0836
eutech@thermofisher.com
www.eutechinst.com
Part of Thermo Fisher Scientific
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