PCE Instruments PCE-WO2 10 Users guide

© PCE Instruments

PCE-WO2 10 Oxygen Meter

User Manual

User manuals in various languages (français,

italiano, español, português, nederlands, türk, polski,

русский, 中文) can be found by using our

product search on: www.pce-instruments.com

Last change: 8 August 2019

v1.0

English

Contents

1 Safety notes ........................................................................................... 1

2 Technical specifications ...................................................................... 2

3 Delivery Scope ...................................................................................... 2

4 Installing the Batteries ......................................................................... 3

5 Display ................................................................................................... 3

6 Keypad ................................................................................................... 4

7 Filling the Electrolyte Solution ............................................................ 5

8 Connecting the Dissolved Oxygen Probe .......................................... 5

9 Switching the Tester On and Off ......................................................... 6

10 Prior to Use ............................................................................................ 6

11 Setup Menu ............................................................................................ 6

11.1 Setting the default option .................................................................................................. 7

12 Setting the salinity coefficient ............................................................. 8

13 Setting the ambient pressure .............................................................. 8

14 DO Calibration in % Saturation Mode ................................................. 9

14.1 Single point calibration - 100% saturation ......................................................................... 9

14.2 2 points calibration ........................................................................................................... 9

15 Temperature Calibration .................................................................... 10

16 Dissolved Oxygen Measurement ....................................................... 11

17 Auto-Hold ............................................................................................. 11

18 Electrode Care and Maintenance ...................................................... 12

19 Troubleshooting .................................................................................. 12

20 Addendum: Preparation of the Zero Oxygen Solution .................... 12

21 Contact ............................................................................................... 13

22 Disposal ............................................................................................... 13

© PCE Instruments

© PCE Instruments

1

1 Safety notes

Please read this manual carefully and completely before you use the device for the first time. The
device may only be used by qualified personnel and repaired by PCE Instruments personnel.
Damage or injuries caused by non-observance of the manual are excluded from our liability and
not covered by our warranty.

• The device must only be used as described in this instruction manual. If used otherwise,
this can cause dangerous situations for the user and damage to the meter.

• The instrument may only be used if the environmental conditions (temperature, relative
humidity, …) are within the ranges stated in the technical specifications. Do not expose
the device to extreme temperatures, direct sunlight, extreme humidity or moisture.

• Do not expose the device to shocks or strong vibrations.

• The case should only be opened by qualified PCE Instruments personnel.

• Never use the instrument when your hands are wet.

• You must not make any technical changes to the device.

• The appliance should only be cleaned with a damp cloth. Use only pH-neutral cleaner,

no abrasives or solvents.

• The device must only be used with accessories from PCE Instruments or equivalent.

• Before each use, inspect the case for visible damage. If any damage is visible, do not

use the device.

• Do not use the instrument in explosive atmospheres.

• The measurement range as stated in the specifications must not be exceeded under

any circumstances.

• Non-observance of the safety notes can cause damage to the device and injuries to
the user.

We do not assume liability for printing errors or any other mistakes in this manual.
We expressly point to our general guarantee terms which can be found in our general terms of

business.
If you have any questions please contact PCE Instruments. The contact details can be found at

the end of this manual.

© PCE Instruments

2

2 Technical specifications

Measuring range oxygen content

0.0 ... 20.0 mg/l

Resolution oxygen content

0.1 mg/l

Measuring accuracy oxygen content

±0.5 mg/l

Measuring range oxygen saturation

0.0 ... 200.0 %

Resolution oxygen saturation

0.1 %

Measuring accuracy of oxygen saturation

±2.0 %

Temperature compensation

0 ... +40 °C / 32 ... 104 °F, automatic

Air pressure correction

60.0 ... 112.5 kPa, 450 ...850 mmHg

Salinity correction

0 ... 35 g/l

Sensor type

polarography

Environmental conditions

0 ... +60 °C / 32 ... 140 °F, max. 80 % r.H.

Power supply

2 x 1.5 AAA batteries

Dimension (length x radius)

175 x 40 mm / 6.8 x 1.5"

Weight

100 g / 3.5 oz

3 Delivery Scope

1 x Dissolved Oxygen Meter PCE-WO2 10
1 x Oxygen probe with measuring cable
2 x Membrane
1 x Electrolyte solution (30ml)
2 x 1.5 V AAA batteries
1 x User manual
1 x Carrying case

© PCE Instruments

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4 Installing the Batteries

• Twist the electrode collar counter clockwise, pull the 6-pin connector away from the
tester.

• Insert two AAA batteries into the battery compartment, note polarity.

• Align the slot on connector, gently push the connector into the tester.

• Twist the electrode collar clockwise until it is tight.

5 Display

PCE-WO2 10 pocket dissolved oxygen tester is equipped with an easy-to-read LCD display that
used to show the measured values and mode icons. The
following table describes the function of each icon.

INDEX:

ICON

DESCRIPTION

MEAS

Indicates the tester is in the measurement mode.

CAL

Indicates the tester is in the calibration mode.

SETUP

Indicates the tester is in the setting mode.

HOLD

Indicates the measuring value has been locked.

ATC

Indicates the temperature compensation is enabled.

When the battery is depleted, the icon will disappear.

© PCE Instruments

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6 Keypad

The tester has a succinct membrane keypad, names and symbols describe each function key
controls.

INDEX:

KEY

FUNCTION

MEAS/HOLD

• Switches the tester ON/OFF.

• Locks the measured value, press the key again to resume measuring.

• Exits the calibration or setting and returns to the measurement mode.

CAL

• Press the key to start the calibration.

• Press and hold the key to enter the setup menu.

• In the setting mode, press the key to select the default option.

ENTER

• Confirms the calibration or selected option.

© PCE Instruments

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7 Filling the Electrolyte Solution

• Take out the dissolved oxygen probe and electrolyte solution from the packaging. Unscrew

the membrane cap.

• Fill the membrane cap halfway with electrolyte solution.

• Screw the membrane cap onto the probe, excess electrolyte solution will drain out.

• Be sure the cathode of probe makes contact with membrane cap, the electrolyte solution in

membrane cap should be without an air bubble.

8 Connecting the Dissolved Oxygen Probe

Insert the 6-pin connector of probe into the connector socket on the tester. After the connection
is completed, DO NOT pull on the cable. Always make sure that the connector is clean and dry.

Cathode

© PCE Instruments

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9 Switching the Tester On and Off

• Press the Meas key to switch on the tester, the display shows measured values.

• Press and hold the Meas key for 5 seconds, the tester will switch off.

• To enable the Auto-Power Off function, please refer to chapter SETUP MENU.

10 Prior to Use

Switch on the tester 10 to 15 minutes and wait for the probe to polarize.

11 Setup Menu

PCE-WO2 10 pocket dissolved oxygen tester contains an integrated setup menu that is used to
customize the displayed option to meet measurement
requirements.

MENU

DESCRIPTION

OPTIONS

DEFAULT

Set the salinity coefficient of
sample.

Range: 0~35ppt

0.0ppt

Set the barometric pressure
coefficient.

Range:
450~850mmHg

760mmHg

Set the number of calibration
points.

1 point

1 point
2 points

Set the default measurement
unit.

mg/L

Concentration Unit

mg/L, °C

ppm % % saturation

Degrees Celsius

Degrees
Fahrenheit

Calibrate the temperature.

---

---

When the option is enabled,
the tester will automatically
sense a stable reading and
lock the measurements.

Enable

Disable
Disable

When the option is enabled,
the tester will automatically
switch off if no key is pressed
within 8 minutes.

Enable

Disable
Disable

Reset the tester to factory
default settings.

Enable

Disable

Disable

Power

On

5 sec.
Power
Off

© PCE Instruments

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11.1 Setting the default option

• Press and hold the Cal key for 3 seconds to enter the setup menu, the tester shows a
menu item and default option.

• If necessary, press the Cal key again to select the desired option.

• Press the Enter key to confirm, the tester moves to the next menu item.

• Repeat the steps above until the tester returns to the measurement mode. Setting is

completed.



• During the setting process, press the Meas key, the tester will exit the setup menu and
return to the measurement mode.

• If you do not want to calibrate the temperature, press the Enter key to skip the °C/CAL
or °F/CAL option.

• The Reset function will restore the tester back to factory default settings. If enabled, all
of the calibration data and selected parameters will be lost or reset, the tester must
be recalibrated.

Option

© PCE Instruments

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12 Setting the salinity coefficient

In order to get an accurate reading, the salinity of the sample should be specified which is done
with the help of a coefficient.
Salt dissolved in water will influences oxygen content of water. If your sample contains high levels
of salinity, ensure that setting an applicable salinity
coefficient prior to measurement.

• In the measurement mode, press and hold the Cal key for 3 seconds to enter the
setup menu, the display shows (salinity coefficient) option.

• Press the Cal key again to set the value.

• Press the Enter key to confirm, the display shows the next menu item.

• Press the Meas key to exit the setting and return to the measurement mode.

13 Setting the ambient pressure

To ensure an accurate reading, the ambient pressure must be set in the unit mmHg.
The following table will help to convert your ambient pressure into the required unit mmHg on
the basis of your current height.

ALTITUDE (m)

kPa

mmHg

ALTITUDE (m)

kPa

mmHg

0

101.3

760

1600

82.9

622

100

100.1

750

1700

81.9

614

200

98.8

741

1800

80.9

607

300

97.6

732

1900

79.9

599

400

96.4

723

2000

78.9

592

500

95.2

714

2100

77.9

584

600

94.0

705

2200

76.9

577

700

92.8

696

2300

76.0

570

800

91.7

688

2400

75.0

563

900

90.5

679

2500

74.1

556

1000

89.4

671

2600

73.2

549

1100

88.3

662

2700

72.3

542

1200

87.2

654

2800

71.4

536

1300

86.1

646

2900

70.5

529

1400

85.0

638

3000

69.6

522

1500

84.0

630

3100

68.7

515

• In the measurement mode, press and hold the Cal key for 3 seconds to enter the
setup menu, the display shows .

• Press the Enter key, the display shows (Barometric Pressure Coefficient)
option.

• Press the Cal key to set the value.

• Press the Enter key to confirm, the display shows the next menu item.

• Press the Meas key to exit the setting and return to the measurement mode.

© PCE Instruments

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14 DO Calibration in % Saturation Mode

PCE-WO2 10 pocket dissolved oxygen tester can be calibrated quickly in air. In the percentage
saturation mode, the tester is able to perform either 1 or 2 points calibration. For single point
calibration, we recommend that you perform 100% saturation calibration in the air-saturated
water. If the 2 points calibration is selected, the zero oxygen solution needs to be used.

14.1 Single point calibration - 100% saturation

• Make sure that you have selected 1 point
calibration in the setup menu.

• Press the Cal key, the tester shows “100% /
CAL1”.

• Hold the dissolved oxygen probe in the air
at 100% relative humidity or place the probe
into the air-saturated water for 15
minutes.

• Press the Enter key. Wait for the reading to
stabilize, the tester automatically shows
END. Single point calibration is completed.

14.2 2 points calibration

• Make sure that you have selected 2 points
calibration in the setup menu.

• Repeat the steps 1.2 to 1.4 above. When
the first calibration point is completed, the
display will show “0% / CAL2”. The
tester prompts you to continue with second
point calibration.

• Immerse the dissolved oxygen probe into
the zero oxygen solution, stir the probe
gently.

• Press the Enter key to confirm. Wait for the
reading to stabilize (this can often take more
than 10 minutes), the display automatically
shows END. The tester returns to the
measurement mode. Calibration is
completed.

 Performing a percentage saturation

calibration will simultaneously calibrate the
corresponding mg/L (or ppm) concentration value.

© PCE Instruments

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15 Temperature Calibration

During the measurement process, if the temperature reading displayed differs from that of an
accurate thermometer, the tester needs to be calibrated.

• Press and hold the Cal key for 3 seconds to
enter the setup menu.

• Press the Enter key until the tester shows
°C/CAL or °F/CAL.

• Press the Cal key to enter the temperature
calibration mode.

• Press the Cal key again to modify the
temperature value (Resolution: 0.5°C).

• Press the Enter key to confirm, the tester
shows the next menu item.

• Press the Meas key to return to the
measurement mode. Calibration is
completed.

© PCE Instruments

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16 Dissolved Oxygen Measurement

PCE-WO2 10 pocket dissolved oxygen tester is suitable for measuring the water, wastewater,
brine and other liquids. If the sample is belong to the seawater or other water containing large
amounts of salt, please setting the salinity coefficient before measurement. Some gas and steam
such as chloride, sulfur
dioxide, sulfureted hydrogen, ammonium, carbon dioxide and iodin can permeate the membrane
via diffusion. So their existence will influence the measurement of dissolved oxygen. If the sample
contains the solvent, grease, sulfide and alga, the membrane on the probe will be blocked,
damaged or eroded.

• Connect the dissolved oxygen probe to tester and wait for 15 minutes to polarize the
probe.

• If necessary, to set the barometric pressure and salinity coefficient in the setup menu
(Refer to page 5).

• Immerse the probe in the sample solution, make sure the temperature sensor on the
probe is fully immersed.

• Stir the probe gently. Record the measured value when the reading is stable.

17 Auto-Hold

PCE-WO2 10 pocket dissolved oxygen tester contains an Auto-Hold function. If enabled, the
tester will automatically sense a stable reading and lock the
measurements. The icon appears on the display. If disabled, press the Hold key, the tester
will immediately lock the displayed value. Press the Meas key to resume measuring.

Temperature
sensor

© PCE Instruments

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18 Electrode Care and Maintenance

• Always keep the membrane of the dissolved oxygen probe is wet or moist.

• If you do not use the probe for long periods, please screw off membrane cap and rinse

the cathode, anode and membrane with deionized water, then soak up residual water
on them with filter paper. Install the probe again.

19 Troubleshooting

LCD DISPLAY

CAUSE

CORRECTIVE ACTION

DO probe does not connect
to tester

Check the connector of probe.

Measured value is out of
range

Check the DO membrane whether
clogged, dirty or broken.

Electrolyte solution is
depleted

Refilling electrolyte solution.

Zero oxygen solution is
contaminated

Replace the calibration solution.

20 Addendum: Preparation of the Zero Oxygen Solution

Dissolve 500mg of sodium sulfate (Na2SO3) reagent and a small amount of cobalt (II) chloride
hexahydrate (CoCl

2

• 6H

2

O) in the 250mL distilled water, mix the solution until the reagent is

completely dissolved.

Membrane cap

Cathode and Anode

21 Contact

If you have any questions, suggestions or technical problems, please do not hesitate to contact

us. You will find the relevant contact information at the end of this user manual.

22 Disposal

For the disposal of batteries in the EU, the 2006/66/EC directive of the European
Parliament applies. Due to the contained pollutants, batteries must not be disposed of as
household waste. They must be given to collection points designed for that purpose.

In order to comply with the EU directive 2012/19/EU we take our devices back. We either re­use them or give them to a recycling company which disposes of the devices in line with law.

For countries outside the EU, batteries and devices should be disposed of in accordance
with your local waste regulations.

If you have any questions, please contact PCE Instruments.

© PCE Instruments

13

© PCE Instruments

14

PCE Instruments contact information

Germany France Spain

PCE Deutschland GmbH PCE Instruments France EURL PCE Ibérica S.L.
Im Langel 4 23, rue de Strasbourg Calle Mayor, 53
D-59872 Meschede 67250 Soultz-Sous-Forets 02500 Tobarra (Albacete)
Deutschland France España
Tel.: [phone] Téléphone: [phone] Tel. : [phone]
Fax: [phone] Numéro de fax: [phone] Fax: [phone]
[email protected] [email protected] [email protected]
www.pce-instruments.com/deutsch www.pce-instruments.com/french www.pce-instruments.com/espanol

Germany United Kingdom Italy

PCE Produktions- und PCE Instruments UK Ltd PCE Italia s.r.l.
Entwicklungsgesellschaft mbH Unit 11 Southpoint Business Park Via Pesciatina 878 / B-Interno 6
Im Langel 26 Ensign Way, Southampton 55010 Loc. Gragnano
D-59872 Meschede Hampshire Capannori (Lucca)
Deutschland United Kingdom, SO31 4RF Italia
Tel.: [phone] Tel: [phone] Telefono: [phone]
Fax: [phone] 9971 Fax: [phone] Fax: [phone]
[email protected] [email protected] [email protected]
www.pce-instruments.com/deutsch www.pce-instruments.com/english www.pce-instruments.com/italiano

The Netherlands China Hong Kong

PCE Brookhuis B.V. PCE (Beijing) Technology Co., Limited PCE Instruments HK Ltd.
Institutenweg 15 1519 Room, 6 Building Unit J, 21/F., COS Centre
7521 PH Enschede Zhong Ang Times Plaza 56 Tsun Yip Street
Nederland No. 9 Mentougou Road, Tou Gou District Kwun Tong
Telefoon: [phone] 102300 Beijing, China Kowloon, Hong Kong
[email protected] Tel: [phone] Tel: [phone]
www.pce-instruments.com/dutch [email protected] [email protected]
www.pce-instruments.cn www.pce-instruments.cn

United States of America Turkey

PCE Americas Inc. PCE Teknik Cihazları Ltd.Şti.
711 Commerce Way suite 8 Halkalı Merkez Mah.
Jupiter / Palm Beach Pehlivan Sok. No.6/C
33458 FL 34303 Küçükçekmece - İstanbul
USA Türkiye
Tel: [phone] Tel: [phone]
Fax: [phone] Faks: 0212 705 53 93
[email protected] [email protected]
www.pce-instruments.com/us www.pce-instruments.com/turkish