Oakton 700 Quick Manual

Quick Guide

Bench 700 Series

pH/mV/Ion/Conductivity/TDS/Dissolved Oxygen/ºC/ºF

GETTING STARTED

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Keypad Functions

Keys Functions

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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.

Increase value. Scroll up in SETUP mode.

MR (Memory Recall) recalls values from memory

Decrease value. Scroll down in SETUP mode.

Freezes measured reading. Press again to resume live reading.

Confi rms calibration values in CAL mode.
Confi rms selections in SETUP mode.
View recalled values in memory mode.

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Melrose, MA 02176

Phone [phone]
Toll Free 1-800-517-8431

Part of Thermo Fisher Scientifi c

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LCD Annunciators

Measured
value is stable

During setup,
select auto hold
ON, ready ON or
Ready OFF

Error or invalid
key pressed

Prompts user
to select bu er

Setup
mode

Electrode error
when appears
with ERR

Measurement
mode

Primary
reading

14

Calibration
mode

Secondary
reading

Memory mode or
when data is stored
into memory

Measured
value is held

Current
measurement
unit / mode
of operation

Automatic
temperature
compensation
is active

During pH CAL,
secondary reading is
the auto recognized pH
bu er standard value

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Meter Connections

BNC connection for pH, ORP (Redox), or

pH

Ion Selective Electrodes (ISE).

Pin connection for half cell reference electrodes.

DC

ATC REF.

pH

Requires separate half cell BNC electrode.

REF

Note: REF is not commonly used and is not required.

For Automatic Temperature Compensation probe.

ATC

Power supply.

DC

CALIBRATION

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pH Calibration

For best results, periodic calibration with known accurate standards is recommended. 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;

USA buer group 1.68, 4.01, 7.00, 10.01, 12.45

NIST buer group 1.68, 4.01, 6.86, 9.18, 12.45

To eliminate temperature errors associated with the pH electrode, attach the automatic
temperature compensation (ATC) probe for best accuracy.

1. Press

2. Dip the pH and ATC electrodes into pH buffer and press

as needed to select pH.

. 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

to accept.
The primary reading will flash briefly then display the percent efficiency (slope) before the
secondary display begins scrolling the remaining available buffers.

4. To calibrate another buffer repeat step 3 or press

to return to the measurement mode.

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Temperature Calibration

The thermistor sensor used for automatic temperature compensation and measurement is
both accurate and stable. Temperature calibration is recommended upon electrode
replacement, whenever the temperature reading is suspect, or if matching against a certified
thermometer is desired.

C

1.

onnect the temperature probe to the meter and place into a solution with a known accurate

t

emperature such as a constant temperature bath.

N

ote: To adjust the manual temperature compensation (MTC) value, do not connect the

t

emperature probe.

2. Press

3. Press
secondar

4. Adjust the temperature using
allo

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Millivolt (mV) Oset Adjustment

as needed to select pH or mV/R.mV.

followed by . The primary display shows the measured temperature while the

y display shows the factory default temperature.

or . Press to accept or to cancel. The meter

ws an adjustable maximum value of ± 5

º

C (or ± 0.9 ºF) from the factory default temperature.

Oxidization Reduction Potential (ORP or Redox) is not a precise measurement, but is useful as a
relative indicator. mV offset adjustment makes readings comparable to a reference.

1.

onnect an ORP electrode and press

C

2.

Dip the ORP elec

3. Press

trode into a solution with a known mV value and stir.

when the reading is stable. The primary display shows the relative millivolt value

as needed to select mV (or R.mV).

(R.mV) while the secondary display shows the factory default mV value.

4. Adjust the R.mV value using

or . Press to accept or to 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.

32

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Ion Calibration (Ion 700 Only)

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. For best results always begin with your lowest standard value, followed by
the next lowest standard.

1. Connect the ISE and press

“- - - -” 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

reading is stable.

3. Press

value (0.10, 1.0, 10, etc).

4. Press

standard value.

5. Rinse the ISE then dip into the corresponding calibration standard and stir.

6. Press

calibration is successful. “SLP Err” indicates calibration for the current point was not successful.

7. Revert to step 3 to calibrate additional points or press

mode at any time.

or to match the primary display to your corresponding ion calibration

to accept or to abort. The primary display will show the next highest calibration

to accept or to cancel. The mV/decade slope value will be displayed briefl y if the

as needed to select ppm. Note: The primary reading will show

when the secondary

as needed to return to measurement

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
The stored memory location value (StO) is briefl y displayed.

to insert the measured value into memory.

2. To recall data from memory, press
fi rst. Press

3. Press

For more information on our products, please contact our channel partner or visit our websites listed below:

or to select the location of the desired data, then press to accept.

to return to the stored data location. Press to return to measurement mode.

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. The location of the most recent stored data is displayed

99 Washington Street
Melrose, MA 02176

Phone [phone]
Toll Free 1-800-517-8431