Oakton PC260, PC250 Instruction Manual
PC250
PC260
pH/ORP/CONDUCTIVITY METER
Preface
This manual describes the operation of the following instrument.
Brand: OAKTON
Series name: OAKTON 200 series Handheld Water Quality Meter
Model: PC250, PC260
Model description: pH/ORP/Conductivity Meter
Be sure to read this manual before using the product to ensure proper and safe operation of
the product. Also, safely store the manual so it is readily available whenever necessary.
Product specifications and appearance, as well as the contents of this manual are subject to
change without notice.
• Warranty and responsibility
Oakton Instruments. warrants that the product shall be free from defects in material and
workmanship and agrees to repair or replace free of charge, at option of Oakton Instruments.,
any malfunctioned or damaged product attributable to responsibility of Oakton Instruments. for
a period of Three (3) years from the delivery unless otherwise agreed in a written statement. In
any one of the following cases, none of the warranties set forth herein shall be extended:
• Any malfunction or damage attributable to improper operation
• Any malfunction attributable to repair or modification by any person not authorized by Oakton Instruments.
• Any malfunction or damage attributable to the use in an environment not specified in this
manual
• Any malfunction or damage attributable to violation of the instructions in this manual or
operations in the manner not specified in this manual
• Any malfunction or damage attributable to any cause or causes beyond the reasonable
control of Oakton Instruments. such as natural disasters
• Any deterioration in appearance attributable to corrosion, rust, and so on
• Replacement of consumables
Oakton Instruments. SHALL NOT BE LIABLE FOR ANY DAMAGES RESULTING FROM ANY
MALFUNCTIONS OF THE PRODUCT, ANY ERASURE OF DATA, OR ANY OTHER USES OF
THE PRODUCT.
• Trademarks
• Microsoft, Windows, Windows Vista are registered trademarks or trademarks of Microsoft
Corporation in the United States and other countries.
Other company names and brand names are either registered trademarks or trademarks of the
respective companies. (R), (TM) symbols may be omitted in this manual.
CODE:M003811-3200828208-GZ0000581081
November,2019 © 2019 Oakton Instruments.
I
Regulations
• Regulations
• EU regulations
• Conformable standards
This equipment conforms to the following standards:
EMC: EN61326-1
RoHS: EN50581
Warning: This product is not intended for use in industrial environments. In an
industrial environment, electromagnetic environmental effects may
cause the incorrect performance of the product in which case the
user may be required to take adequate measures.
Class B, Basic electromagnetic environment
9. Monitoring and control instruments
• Information on disposal of electrical and electronic equipment and disposal of batteries and accumulators
The crossed out wheeled bin symbol with underbar shown on the product or accompanying
documents indicates the product requires appropriate treatment, collection and recycle for
waste electrical and electronic equipment (WEEE) under the Directive 2012/19/EU, and/or
waste batteries and accumulators under the Directive 2006/66/EC in the European Union.
The symbol might be put with one of the chemical symbols below. In this case, it satisfies
the requirements of the Directive 2006/66/EC for the object chemical. This product should not
be disposed of unsorted household waste. Your correct disposal of WEEE, waste batteries and
accumulators will contribute to reducing wasteful consumption of natural resources, and
protecting human health and the environment from potential negative effects caused by
hazardous substance in products.
Contact your supplier for information on applicable disposal methods.
II
Regulations
• Authorised representative in EU
Cole-Parmer UK
9 Orion Court, Ambuscade Road
Colmworth Business Park
St Neots
Cambridgeshire
PE19 8YX, United Kingdom
Phone: +44-(0)1480-272279
Fax: +44-(0)1480-212111
• FCC rules
FCC Compliance Statement
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesired operation.
Responsible Party for FCC matter
Oakton Instruments
625 East Bunker Court,
Vernon Hills, IL, 60061, USA
Tel: 1-888-462-5866
Note
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely
to cause harmful interference in which case the user will be required to correct the interference
at his own expense.
Any changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
III
For Your Safety
• For Your Safety
• Hazard classification and warning symbols
Warning messages are described in the following manner. Read the messages and follow the
instructions carefully.
• Hazard classification
This indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury. This is to be
limited to the most extreme situations.
This indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
This indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury. It may also
be used to alert against unsafe practices.
• Warning symbols
Description of what should be done, or what should be
followed.
VI
Description of what should never be done, or what is
prohibited.
For Your Safety
• Safety precautions
This section provides precautions for using the product safely and correctly and to prevent
injury and damage. The terms of DANGER, WARNING, and CAUTION indicate the degree of
immanency and hazardous situation. Read the precautions carefully as it contains important
safety messages.
• Instrument and electrode
Do not disassemble or modify the instrument. Otherwise, it may heat up or be ignited
resulting in a fire or an accident.
Harmful chemicals
Some electrodes are used with hazardous standard solutions. Handle them with care.
The internal solution of pH electrode is highly concentrated potassium chloride (3.33
mol/L KCl). If the internal solution comes in contact with the skin, wash it off
immediately. If it gets into the eyes, flush with plenty of water and then consult a
doctor.
Broken glass
Broken glass may cause injury. The outer tube and tip of an electrode are made of
glass. Handle them with care.
Do not use the phono jack under wet or humid conditions. Otherwise, it may cause a
fire, electric shock, or breakage.
VII
For Your Safety
• Battery
Keep batteries out of reach of children. If someone accidentally swallows a battery,
consult a doctor immediately.
If alkaline fluid from a battery gets into the eyes, do not rub the eyes, rinse with clean
water immediately and then consult a doctor. Contact with alkaline fluid could cause
blindness.
Do not put batteries in a fire, expose to heat, disassemble or remodel.
Doing so can case fluid leakage, overheating or explosion.
VIII
Product Handling Information
• Product Handling Information
• Operational precautions (instrument)
• Only use the product including accessories for their intended purpose.
• Do not drop or physically impact the instrument.
• The instrument is made of solvent-resistant materials but that does not mean it is resistant
to all chemicals. Do not expose the instrument in strong acid or alkali solution, or wipe with
such solution.
• If the instrument is dropped into water or gets wet, wipe it using soft cloth. Do not heat to
dry it.
• The instrument has a dust-proof and waterproof structure i.e., the instrument does not
malfunction even when immersed in water of 1 m depth for 30 minutes. This does
guarantee non-destructive, trouble-free, dust-proof, and waterproof performance in all
situations.
• When replacing the batteries or when a serial cable connected, the instrument does not
have the dust-proof and waterproof performance. The dust-proof and waterproof
performance is maintained only when the covers are attached correctly.
• After replacing the batteries or removing the serial cable connected, make sure that the
waterproof gasket attached to the cover is not deformed or discolored, or has foreign
matter adhering to it. If the waterproof gasket is deformed, discolored or has foreign matter
adhering to it, dust could get inside, water leaks could occur that could lead to instrument
malfunction.
• To disconnect an electrode or serial cable, hold the connector and pull it off. If you pull at
the cable, it may cause breakage.
• The phono jack communication between the instrument and a personal computer (referred
to as PC in the rest of this document) may fail because of environmental conditions, such
as electromagnetic noise.
• Do not replace the batteries in a dusty place or with wet hands. Dust or moisture could get
inside the instrument, possibly causing instrument malfunction.
• Do not use an object with a sharp end to press the keys.
• If the power supply is interrupted while measurement data is being saved in the instrument,
the data could be corrupted.
• A NiMH rechargeable battery can be used in this instrument.
• Operational precautions (battery)
• Do not short circuit a battery.
• Position the + and side of the battery correctly.
• When the battery has depleted or the instrument will not be used for a long time, remove
the batteries.
• Of the specified battery types, make sure to use two batteries of the same type.
• Do not use a new battery together with a used battery.
• Do not use a fully charged nickel-metal hydride battery together with a partially charged
battery.
• Do not attempt to charge a non-rechargeable battery.
IX
Product Handling Information
• Environmental conditions for use and storage
• Temperature: 0 °C to 45 °C
• Humidity: under 80% relative humidity and free from condensation
• Avoid the following conditions:
• Strong vibration
• Direct sunlight
• Corrosive gas environment
• Locations close to an air-conditioner
• Direct wind
• Transportation
When transporting the instrument, repackage it in the original package box. Otherwise, it may
cause instrument damage.
• Disposal
• Standard solution used for the calibration must be under neutralized before the disposal.
• When disposing of the product, follow the related laws and regulations of your country for
disposal of the product.
X
Contents
■ Product Overview .............................................................. 1
● Package Content........................................................ 1
● Key Features .............................................................. 2
● Product components................................................. 3
■ Basic operations................................................................ 7
● Mode and measurement............................................ 9
■ Calibration........................................................................ 11
● pH Calibration .......................................................... 11
● ORP/mV Calibration................................................. 13
● Conductivity Calibration ......................................... 15
● TDS calibration ........................................................ 18
● Salinity calibration................................................... 19
● Temperature Calibration ......................................... 21
■ Data................................................................................... 23
● Data capture and storage........................................ 23
● Data transfer............................................................. 24
■ Setup................................................................................. 25
● P1 pH setup .............................................................. 25
● P1 COND setup ........................................................ 29
● P2 TDS setup............................................................ 36
● Data setup ................................................................ 43
XI
Contents
● General setup........................................................... 50
● CLK setup................................................................. 59
■ Maintenance and storage ............................................... 64
● Maintenance and storage of the instrument ......... 64
● Maintenance and storage of electrodes ............... 65
■ Error messages and trouble shooting........................... 67
■ Appendix .......................................................................... 72
● Appendix 1 ............................................................... 72
● Appendix 2 ............................................................... 75
● Appendix 3 ............................................................... 80
XII
Product overview
1
2
3 5
4
■ Product Overview
This section describes the package content, key features and product components of OAKTON
200 series Handheld meters.
● Package Content
After opening the carry case, remove the meter and check for damage on the instrument and
confirm that the standard accessories all exist. If damage or defects are found on the product,
contact your dealer.
OAKTON PC200 series Handheld meters and meter kit include the following items:
S.NO. Name
1 Instrument
2 Instruction manual
3 2 AA batteries
4 Electrodes (Electrodes kit only)
5 Calibrating solutions
1
Product overview
● Key Features
• IP67 water ingress, dust-proof, shock-resistant, anti-slip meter housing.
• Large monochrome LCD (50 x 50 mm) with white LED back lighting.
• Built-in electrode holder (up to 2 electrodes).
• Foldable meter stand.
• Simple user interface and single parameter display.
• 500 (for PC250) / 1000 (for PC260) data memory.
• Automatic Temperature Compensation (ATC) with temperature calibration.
• Adjustable auto shut-off time (1 to 30 minutes).
• Auto-hold / Auto stable / Real-time measurement modes with stability indicators.
• Powered by 2 x AA batteries.
• Real-time clock (only for PC260).
• PC (standard USB) / Printer (25 pin serial) connection via 2.5 mm diameter phono jack.
2
Product overview
● Product components
No Name Function
1 Monochrome LCD Displays the measured value
2 Operation keys Used for instrument operation
3 Electrode connector Connect to the BNC connector of the electrode
4 Temperature connector (T) Connect to the temperature sensor of the electrode
5 Battery cover Open/close to insert/remove batteries
6 Electrode holder Hold the electrode to carry with the instrument
7 Meter stand
8 Serial connector Connects to the PC or printer with the appropriate cable
Open stand to place the meter at an inclined position on a
flat surface
3
Product overview
● Display
No Name Function
1 Status Icon
2 Parameters
3
4
Temperature display
5
area
Measured value, set
6
item display area
7
Displays the current operation mode (Setup, Calibration,
Measurement and Data mode)
Displays the measured parameters like pH, RmV, COND, Res,
TDS and Sal
Stability indicator shows value is stable for documentation in
Auto Stable and Auto Hold modes
Appears when the measured value display is stable and fixed in
auto-hold mode
Displays the measured temperature
Displays the measured value and the set value
Indicates electrode sensitivity level
8
9 Indicates data being transfered to the printer or computer
10 Displays the unit for the measurement parameter
11 Displays the battery level
Indicates error situation
4
Product overview
● Battery level display
100% battery life
50% battery life
20% battery life
Batteries are weak and need replacement. Refer “ BATT LOW ” (page 67) to
solve this
● pH Electrode sensitivity level
Electrode sensitivity above 95%(excellent)
Electrode sensitivity between 85% to 95% (very good)
Electrode sensitivity between 80% to 85%(good). Refer “ SLPE ERR ” (page
67) to solve this
5
Product overview
● Keypad operation
Keypad Name Function
CAL key
MEAS key
DATA key Switches from the measurement mode to the data mode.
MODE key In the measurement mode, changes measurement parameters.
SET key Switches from the measurement mode to the setup mode.
ENTER key
UP key
DOWN key
POWER key Powers ON/OFF the instrument.
Switches from the measurement mode to the calibration mode.
Starts calibration in the calibration mode.
Switches the operation mode to the measurement mode.
Releases the fixed measurement value mode in the auto hold
mode and begins a fresh measurement.
Determines the selection or setup.
Saves data in the measurement mode and calibration mode.
In the setup mode, navigates between various setups.
Selects preferred option in some setup screens.
Increases or decreases selected digit when entering numbers.
6
Basic operations
Note
■ Basic operations
This section describes function and basic operation method of each part of OAKTON PC200
series Handheld meters.
● Turning on the instrument
Inserting the batteries
This instrument is operated by batteries. You can use
AA alkaline batteries or AA Ni- MH chargeable
batteries. Perform the following procedure to insert
batteries in the instrument.
1. Unscrew the battery cover on the back of the
instrument counter-clock wise to unlock the battery cover.
2. Remove the battery cover and set the batteries
inside.
3. Replace battery cover.
4 . S c r e w t h e b a t t e r y c o v e r o n t h e b a c k
of the instrument clockwise to lock the battery
cover.
• Do not replace the batteries in a dusty place or with wet hands. Dust or moisture could get
inside the instrument and possibly cause an instrument malfunction.
• Do not short-circuit a battery.
• Note polarity as shown in the battery compartment.
• When the battery has depleted or the instrument is not used for a long time, remove the
batteries.
• Of the specified battery types, make sure to use two batteries of the same type.
• Do not use a new battery together with an used battery.
7
Basic operations
Electrode connector
Temperature jack (T)
● Connecting an electrode
To perform calibration/ measurement, it is necessary to use the appropriate electrode for
measurement parameter. Recommended electrodes for various sample are listed in our
product catalog. Use the following procedure to correctly connect the electrode to the
instrument:
1. Insert the electrode connector by fitting its groove with the connector pin of the instrument (refer below table).
2. Turn the electrode connector clockwise by following the grooves.
3. Slide the connector cover on the connector.
4. When using a combination electrode equipped with a temperature sensor, insert the temperature jack (T) to the ATC socket on the meter.
CH1 CH2
pH Electrode Conductivity Electrode
8
Basic operations
● Mode and measurement
● Changing the operation mode
You can change the operation mode to four available modes depending on the purpose of use.
The status icon indicates the current mode.
Icon Name Function
Setup mode Perform various setup functions.
Calibration
mode
Measurement
mode
Data mode Performs data setup. Displays the saved data.
You can change the operation mode using the corresponding key:
• Measurement mode: Press the key to change to the measurement mode.
• Calibration mode: In the measurement mode, press the key to change to the
calibration mode.
• Data mode: In the measurement mode, press the key to change to the data mode.
• Setup mode: In the measurement mode, press the key to change to the setup mode.
Performs calibration.
Performs measurement.
9
Basic operations
● Changing the measurement parameter
This instrument measures multiple parameters. For measurement, an electrode corresponding
to the measurement parameter is required. In the measurement mode, the measurement
parameter can be changed by pressing the key.
10
pH calibration
Note
Tip
■ Calibration
This section describes the basic calibration method using OAKTON PC200 series Handheld
meters, pH and conductivity electrode.
● pH Calibration
Calibration is necessary for accurate pH measurement. To perform pH calibration, follow the
procedure detailed below:
Prerequisites
• Clean the pH electrode with DI (deionized) water and wipe it with tissue paper.
• Switch on the PC meter and plug in the pH electrode.
• Prepare buffer solution required for calibration.
• Keep the meter in pH measurement mode.
• Dip the pH electrode at least 3 cm in the calibration solution.
• Perform two-point calibration using:
pH 7 and 4 for acidic sample.
pH 7 and 10 for alkaline sample.
• Perform three-point calibration using pH7, 4 and 10 if you are unsure of the expected
sample pH value. It is recommended to calibrate with pH7 first.
• Default buffer setup is BUFF USA. If you want to change to BUFF NIST or BUFF DIN,
refer to “P 1.1 Buffer selection” on page 26.
• To abort an ongoing calibration process at any point of time, press the key.
• It is recommended to clear the previous calibration data before performing calibration. For
erasing the calibration data, refer to “P 1.3 Erase calibration data” on page 28.
11
pH calibration
Note
Calibration
5. After placing the pH electrode in the buffer solution, press the key.
6. The selected buffer standard appears on the meter screen and meter starts checking
various calibration values with a blinking on screen.
7. Wait for the to stabilize (stable calibration reading).
8. Press the ENT key to confirm and save calibration data.
9. Meter displays DONE indicating end of the pH calibration procedure.
If you want to know previous calibrated values, press the key when you are in the CAL
mode.The display scrolls through the calibrated values and indicates slope and offset values.
12
ORP calibration
Note
Tip
● ORP/mV Calibration
Calibration is necessary for accurate ORP measurement. To perform ORP calibration, follow
the procedure detailed below:
Prerequisites
• Clean the ORP electrode with DI (deionized) water and wipe it with tissue paper.
• Switch on the PC meter and plug in the ORP electrode.
• Prepare standard solution required for calibration.
• Ensure that the meter is in mV measurement mode.
• Dip the ORP electrode into the standard solution ensuring that the solution level is at least
3 cm from the electrode tip.
• Absolute value measurement mode and relative value measurement mode are the two
types of measurement mode available for ORP (mV) measurement.
• In absolute value measurement mode, the handheld meter displays the actual voltage
value.
• In relative value measurement mode, user can adjust the absolute mV value by calibration.
If the mV value is adjusted, the meter automatically indicates relative mV value as RmV.
The adjustment mV is applied as an offset to the absolute mV value.
• In the relative mV mode, the absolute mV value can be adjusted by ± 200 mV.
To abort an ongoing calibration process at any point of time, press the key.
13
ORP calibration
Calibration
10. After placing the electrode in the solution, press the key to switch to mV mode.
11. Press the key.
12. Meter starts reading mV values and the blinks until value stabilizes.
13. Wait for the to stabilize (stable calibration reading).
14. Use the keys to adjust the mV value to your desired value.
15. Press the ENT key to confirm and save calibration data.
16. Meter displays DONE that indicates end of the ORP/mV calibration procedure.
14
Conductivity calibration
Note
Tip
● Conductivity Calibration
Calibration is necessary for accurate electrical conductivity measurement. To perform
conductivity calibration, follow the procedure detailed below:
Prerequisites
• Clean the conductivity electrode with DI (deionized) water and wipe it with tissue paper.
• Switch on the PC meter and plug in the conductivity electrode.
• Prepare standard solution required for calibration.
• Press the key to keep the meter in COND mode.
• Dip the conductivity electrode in the standard solution till the hole at the upper part of the
electrode is immersed.
• Salinity, TDS, and resistivity of a sample solution are calculated from the measured value
of conductivity.
• In conductivity calibration mode, the default calibration method is Auto calibration. If you
like to change it to manual calibration method, refer “P 1.3 calibration mode setup” on
page 32.
• For second or multiple point calibration, clean the conductivity electrode with DI water and
follow the same procedure.
• If you are performing multiple point calibration, calibrate to the lowest conductivity first and
then move to increasing conductivity values. This minimizes cross contamination.
• To abort an ongoing calibration process at any point of time, press the key.
15
Conductivity calibration
Calibration
Auto calibration
17. After placing the conductivity electrode in the standard solution, press the key.
18. Meter displays “Auto cal” as per set calibration method and starts measuring various
calibration values with a blinking on screen.
19. Wait for the to stabilize (stable calibration reading).
20. Press the ENT key to confirm and save calibration data.
21. Meter displays DONE indicating end of the conductivity calibration procedure.
22. Repeat for other calibration points as required.
23. You can calibrate at one point for each range
16
Conductivity calibration
Manual calibration
1. After placing the conductivity electrode in the standard solution, press the key.
2. Meter displays “Manual cal” as per set calibration method and starts measuring various
calibration values with a blinking on screen.
3. Wait for the to stabilize (stable calibration reading).
4. Use the keys to enter the electrical conductivity value of the standard solution used for calibration.
5. Press the ENT key to confirm and save calibration data.
6. Meter displays DONE indicating end of the conductivity calibration procedure.
7. Repeat for other calibration points as required.
8. You can calibrate at one point for each range.
17
Conductivity calibration
Note
● TDS calibration
TDS (Total dissolved solids) is calculated from the measured conductivity value. So no TDS
calibration is required and once conductivity mode is calibrated, TDS values will be recalibrated
accordingly.
Set the required TDS curve in OAKTON PC200 series Handheld meters. Available TDS curves
are;
- LINR (Linear factor with adjustable factor from 0.4 to 1.0)
- 442 (Myron L 442 non-linear curve)
- EN (European environmental standard non-linear curve)
- NACL (non-linear salinity curve)
To set a desired TDS method, refer “P 2.1 TDS curve selection” on page 37.
18
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