Trotec BW10 Operating Manual

BW10

EN

OPERATING MANUAL

PH MEASURING DEVICE

TRT-BA-BW10-TC-002-EN

Table of contents

Notes regarding the operating manual................................. 1

Safety .....................................................................................2

You can download the current version of the operating manual
and the EU declaration of conformity via the following link:

Information about the device................................................3

Transport and storage...........................................................4

Operation ...............................................................................4

Maintenance and repair ........................................................8

Disposal .................................................................................9

Notes regarding the operating manual

Symbols

Warning of electrical voltage

This symbol indicates dangers to the life and health of
persons due to electrical voltage.

Warning

This signal word indicates a hazard with an average
risk level which, if not avoided, can result in serious
injury or death.

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http://hub.trotec.com/?id=39360

Caution

This signal word indicates a hazard with a low risk
level which, if not avoided, can result in minor or
moderate injury.

Notice

This signal word indicates important information
(e.g. material damage), but does not indicate hazards.

Info

Information marked with this symbol helps you to carry
out your tasks quickly and safely.

Follow the manual

Information marked with this symbol indicates that the
operating manual must be observed.

Wear protective equipment

Information marked with these symbols indicates that
you should wear your personal protective equipment.

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Operating manual – pH measuring device BW10

Safety

Read this manual carefully before starting or using the
device. Always store the manual in the immediate vicinity
of the device or its site of use!

Warning
Read all safety warnings and all instructions.

Failure to follow the warnings and instructions may
result in electric shock, fire and/ or serious injury.

Save all warnings and instructions for future
reference.

This appliance can be used by children aged from
8 years and above and persons with reduced physical,
sensory or mental capabilities or lack of experience
and knowledge if they have been given supervision or
instruction concerning use of the appliance in a safe
way and understand the hazards involved.
Children shall not play with the appliance. Cleaning and
user maintenance shall not be made by children
without supervision.

• Do not use the device in potentially explosive rooms.

• Do not use the device in aggressive atmosphere.

• This appliance is not a toy! Keep away from children and
animals. Do not leave the device unattended during
operation.

• Never immerse the entire device in a liquid. Only the
measuring probe is intended to be immersed.

• Protect the device from permanent direct sunlight.

• Do not remove any safety signs, stickers or labels from the
device. Keep all safety signs, stickers and labels in legible
condition.

• Do not open the device with a tool.

• Only use the device if sufficient safety precautions were
taken at the surveyed location (e.g. when performing
measurements along public roads, on building sites etc.).
Otherwise do not use the device.

• Observe the storage and operating conditions (see chapter
Technical data).

Intended use

Only use the device to determine the pH value and temperature
of liquids in aquaria, ponds, swimming pools or in food.

To use the device for its intended use, only use accessories and
spare parts which have been approved by Trotec.

Improper use

Do not use the device in potentially explosive atmospheres or
for measurements at live parts.

The device is not designed to be used under laboratory
conditions.

Trotec accepts no liability for damages resulting from improper
use. In such a case, any warranty claims will be voided. Any
unauthorised modifications, alterations or structural changes to
the device are forbidden.

Personnel qualifications

People who use this device must:

• be aware of the dangers that occur when handling
corrosive liquids such as bases and acids.

• have read and understood the operating manual, especially
the Safety chapter.

Residual risks

Warning

Be careful when handling strong acids or bases!
If you are unsure whether or not a liquid has a
corrosive effect, wear suitable protective equipment
consisting of eye protection, protective clothing,
protective gloves and safety boots in any case.

Warning

Risk of suffocation!
Do not leave the packaging lying around. Children may
use it as a dangerous toy.

Warning

The device is not a toy and does not belong in the
hands of children.

Warning

Dangers can occur at the device when it is used by
untrained people in an unprofessional or improper way!
Observe the personnel qualifications!

Caution

Sodium carbonate (Na2CO3, contained in buffer solution

10.01) may cause eye irritation. Upon contact with
eyes, thoroughly rinse with water and seek medical
advice.
Keep sodium carbonate out of the reach of children.
Do not breathe dust containing sodium carbonate.

Notice

To prevent damages to the device, do not expose it to
extreme temperatures, extreme humidity or moisture.

Notice

Do not use abrasive cleaners or solvents to clean the
device.

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Operating manual – pH measuring device BW10

Information about the device

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Device description

The pH measuring device BW10 is suited for measuring pH
values and temperatures of liquids.

With the automatic temperature compensation and the
automatic calibration functions the measuring device permits a
quick and precise determination of the pHvalue between pH0
and pH14 in the temperature measuring range between 0 and
50°C.

The three-point calibration is already carried out before leaving
the factory, but it can also be repeated using the supplied
pHbuffer solution set.

The determined pHvalue is displayed along with the water
temperature.

The device comes equipped with an exchangeable pH electrode.
The electrode and the water temperature probe are protected
from external influences by means of a removable protective
cap.

The device is further equipped with a Hold function for holding
the currently measured value.

Device depiction

No. Designation

1 Battery compartment with screw-on lid

2 LC display

3 CAL button

4 HOLD button

5 Power button

6 Screw cap

7 Measuring probe

8 Measuring electrode

9 Protective cap

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Display

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14

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Transport and storage

Notice

If you store or transport the device improperly, the
device may be damaged.
Note the information regarding transport and storage of
the device.

Transport

For transporting the device use a suitable bag to protect it from
external influences.

Make sure that the protective cap is attached to the measuring
probe.

No. Designation

10 Measured pH value indication

11 °C indication

12 Measured temperature indication

13 °F indication

14 ATC indication

15 CAL indication

Technical data

Parameter Value

Article number 3,510,205,810

pH value Measuring

range

Accuracy ±0.02 pH

Resolution 0.01 pH

Temperature Measuring

range

Accuracy 0.2 °C / 2 °F

Resolution 0.1 °C / 1 °F

Display LCD

Protection type IP65

Operating conditions 0 °C to 50 °C / 32 °F to 122 °F

Storage conditions 10°C to 25 °C with <65 % RH

Power supply 4 x 1.5 V, LR44

Dimensions 188 mm x 38 mm x 38 mm

Weight 83 g

0.00 pH to 14.00 pH

0 °C to 50 °C / 32 °F to 122 °F

with <85 % RH

Storage

When the device is not being used, observe the following
storage conditions:

• dry and protected from frost and heat

• protected from dust and direct sunlight

• with a cover to protect it from invasive dust if necessary

• The storage temperature is the same as the range given in
the Technical data chapter.

• Remove the batteries from the device.

Operation

Inserting the batteries

Insert the supplied batteries into the device before first use.

Notice

Make sure that the surface of the device is dry and the
device is switched off.

1. Open the battery compartment at the top by unscrewing the
lid.

Scope of delivery

• 1 x pH measuring device

• 4 x 1.5 V LR44 batteries

• 1 x pH buffer solution set (4.01/7.00/10.01)

• 1 x Quick guide

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Operating manual – pH measuring device BW10

2. Insert the batteries (4 x LR44 button cells) into the battery

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compartment with correct polarity.

Removing the protective cap

The device has already been calibrated at the factory using a
highly concentrated saline solution. This often leads to the
formation of salt crystals at the diaphragm electrode (fibre
bundle) during later usage. These visible residues are
completely normal for pH measuring electrodes of this type.
Such residues are harmless for the measuring electrode and
can easily be washed off with water; thus they do not represent
any quality defect!

The measuring electrode is protected from external influences
by means of a protective cap.

1. Prior to every measurement pull the protective cap off the
measuring electrode.

3. Screw the lid back on the battery compartment. In doing so,
make sure that the rubber seal is properly seated.

2. After every measurement put the protective cap back on the
electrode.

Performing calibration

Info

Before calibration immerse the measuring probe in
distilled water for approx. 10 to 15min.

To perform a calibration of the pH measuring device, you first
have to prepare the buffer solutions contained in the supplied
set.

The buffer solutions correspond to the pH values 4 (red),
7 (green) and 10 (blue) with an accuracy of ±0.01pH (at 25°C).

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Operating manual – pH measuring device BW10

Please proceed as follows to prepare a buffer solution:

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Caution

The powder for the buffer solutions as well as the
buffer solutions made thereof are unfit for human
consumption.

Caution

Sodium carbonate (Na2CO3, contained in buffer
solution 10.01) may cause eye irritation. Upon contact
with eyes, thoroughly rinse with water and seek
medical advice.
Keep sodium carbonate out of the reach of children.
Do not breathe dust containing sodium carbonate.

1. Fill the contents of a sachet (e.g. pH 7 = green) into a
beaker glass or suitable glass vessel with a capacity of at
least 250ml.

2. Add 250ml of distilled water.

3. Stir the solution with a glass rob until the powder is
completely dissolved.

Please note that the pH value of the buffer solution may vary
depending on the temperature. The table below indicates the pH
value as a function of the temperature (see also imprint on
plastic sachets):

5. Let go of the CAL button(3).

ð After approx. 2s, SA is displayed in the measurement

value display(10).

ð Afterwards, End is displayed.
ð Calibration for pH value7 is now completed and the

current measurement result is displayed.

6. Repeat steps2 to 5 for the buffer solution which is closest
to the expected pHvalue.

°C pH 4 pH 7 pH 10

10 4.00 7.06 10.18

15 4.00 7.04 10.12

20 4.00 7.02 10.06

25 4.00 7.00 10.01

30 4.01 6.99 9.97

35 4.02 6.98 9.93

40 4.03 6.97 9.89

45 4.04 6.97 9.86

50 4.06 6.96 9.83

Info

If calibration is aborted, this is either due to a wrong
buffer solution or to a defective measuring electrode.
First check whether the correct buffer solution was
used by means of a second measuring device if

To perform the calibration, please proceed as follows:

Info

Always use fresh buffer solutions for calibration.

1. Press the Power button(5) to switch the device on.

ð The currently measured pH and temperature values are

displayed.

necessary. If the buffer solution corresponds to the
pH value to be calibrated, the measuring electrode is
defective and must be replaced, see chapter Replacing
the measuring electrode.

2. With light circular motions, immerse the measuring probe in
the buffer solution for the pH value7 first.

ð The measuring electrode should be completely

surrounded by the buffer solution.

3. Wait until a stable measured value is shown on the
measurement value display(10).

4. Press the CAL button(3) for approx. 3s.

ð CAL is displayed in the measurement value display(10).

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Carrying out a measurement

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1. Immerse the measuring probe in the liquid to be measured.

ð The measuring electrode should be completely

surrounded by the liquid.

2. Press the Power button(5) to switch the device on.

ð The currently measured pH and temperature values are

displayed.

Holding a measured value (HOLD)

1. Press the HOLD button(4) to freeze the currently measured
value.

2. Press the HOLD button(4) again to show the currently
measured values again.

Switching the device off

The device comes equipped with an automatic switch-off
function and switches off automatically if no button was pressed
for approx.15 min.

1. Press the Power button(5) to switch the device off.

Info

If the measured value is outside the measuring range,
this is indicated on the display.
The measurement value display will show --- for the
pH value and either L or H for too low or too high
temperature values.

Changing the unit °C / °F

In default setting, the measuring device is set to °C.

Please proceed as follows to change between the units °C
and °F:

ü The measuring device is switched off.

1. Simultaneously press the CAL(3) and Power button(5) until
the unit °C(11) or °F(13) is displayed.

2. Press the CAL button(3) to switch between °C and °F.

3. Press the HOLDbutton(4) to save the setting.

ð SA appears on the display.
ð The setting is saved and the current measurement

result is displayed.

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Maintenance and repair

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Battery change

A battery change is required when the device can no longer be
switched on (see chapter Inserting the battery).

Replacing the measuring electrode

The measuring electrode must be replaced if it is damaged or
can no longer be properly calibrated. This manifests itself in the
fact that calibration is aborted despite using the correct buffer
solution.

1. Pull the protective cap off the measuring electrode.

3. Pull the measuring electrode and the seal ring off the
device.

4. Place the new seal ring onto the new measuring electrode.

5. Put the new measuring electrode on the device. In doing so,
pay attention to the guide rails and connections.

2. Loosen the screwing at the measuring electrode and slide it
downwards.

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Operating manual – pH measuring device BW10

6. Put the screwing back on and tighten it firmly.

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7. Calibrate the device with the new measuring electrode, see
chapter Operation.

Cleaning

Clean the device with a soft, damp and lint-free cloth. Ensure
that no moisture enters the housing. Do not use any sprays,
solvents, alcohol-based cleaning agents or abrasive cleaners,
but only clean water to moisten the cloth.

Disposal

The icon with the crossed-out waste bin on waste
electrical or electronic equipment stipulates that this equipment
must not be disposed of with the household waste at the end of
its life. You will find collection points for free return of waste
electrical and electronic equipment in your vicinity. The
addresses can be obtained from your municipality or local
administration. For further return options provided by us please
refer to our website www.trotec24.com.

The separate collection of waste electrical and electronic
equipment aims to enable the re-use, recycling and other forms
of recovery of waste equipment as well as to prevent negative
effects for the environment and human health caused by the
disposal of hazardous substances potentially contained in the
equipment.

You are responsible for deleting any personal data stored on the
waste equipment to be disposed of.

In the European Union, batteries and accumulators must not be
treated as domestic waste, but must be disposed of
professionally in accordance with Directive 2006/66/EC of the
European Parliament and of the Council of 6September 2006
on batteries and accumulators. Please dispose of batteries and
accumulators according to the relevant legal requirements.

Cleaning the measuring probe

When cleaning the measuring probe, proceed with great
caution:

• Rinse the electrode with distilled water.

• Avoid unnecessary friction / contact with the glass ball
electrode as it may be damaged or age faster.

Repair

Do not modify the device or install any spare parts. For repairs
or device testing, contact the manufacturer.

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Operating manual – pH measuring device BW10

Trotec GmbH & Co. KG

Grebbener Str. 7
D-52525 Heinsberg

[phone]
[phone]

[e-mail]
www.trotec.com