Oakton pH 700, Ion 700 Instruction Manual

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Instruction Manual

Part of Thermo Fisher Scientific 68X541701 Rev.4 Apr 2013

pH 700 pH/mV/°C/°F Bench Meter

Ion 700

pH/mV/Ion/°C/°F Bench Meter

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 ............................... 8

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 ºCºF (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. REPLACEMENTS AND ACCESSORIES ........................ 11

7. TROUBLESHOOTING GUIDE ......................................... 13

8. ION SELECTIVE ELECTRODES ..................................... 15

9. SPECIFICATIONS ............................................................ 16

10. WARRANTY ..................................................................... 17

11. RETURN OF ITEMS ......................................................... 18

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.

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.

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.

Confirms calibration values in CAL mode. Confirms selections in SETUP mode. View recalled values in memory mode.

2.2 LCD Annunciators

2.3 Meter Connections

REF

ATC

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. 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) 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 display shows the factory default temperature.

4) Adjust the temperature using to cancel. The meter allows an adjustable maximum value of ± 5ºC (or ± 9ºF) from the factory default temperature.

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

followed by . The primary display shows the

or . Press to accept or

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