b) Persons and product
•
People who set up, use and service the product must have sufficient knowledge
about the measuring process and the meaning of the measurements. This do-
cument provides valuable information on these topics. The instructions in this
document must be understood, observed and followed. To ensure that no risks
result from the interpretation of the measurements, the user must have specialist
knowledge – the user shall be liable for all damage/risks caused by incorrectly
interpreting the measurements due to insufficient knowledge.
• In schools, educational facilities, hobby and DIY workshops, the product must be
operated under the supervision of qualified personnel.
• Always comply with the accident prevention regulations for electrical equipment
when using the product in commercial facilities.
c) Batteries
• Check that the batteries are inserted with the correct polarity.
• To prevent battery leakage, remove the batteries if you do not plan to use the
product for an extended period. Leaking or damaged batteries may cause acid
burns if they come into contact with your skin. Always use protective gloves when
handling damaged batteries.
• Keep batteries out of the reach of children. Do not leave batteries lying around, as
they constitute a choking hazard for children and pets.
•
Batteries must not be dismantled, short-circuited or thrown into fire. Never rechar
-
ge non-rechargeable batteries. This may cause an explosion!
Product overview
1
2
3
4
5
6
7
8
1 Sensor cap
2 Protective cap
3 Screw cap
4 button
5 LCD display
6 Battery compartment cover
7 Measuring probe (replaceable)
8 Probe tip
Setup
a) Inserting/replacing the batteries
• Unscrew the battery compartment cover
(6)
in an anticlockwise direction.
• Insert the two CR2032 batteries (included) into the battery compartment, ensuring that they
are inserted in the correct polarity (observe plus/+ and minus/- markings). The polarity is
indicated in the battery compartment.
• Replace the battery compartment cover
(6)
and tighten it by turning it clockwise. Ensure that
sealing ring in the battery compartment cover is in the correct position.
•
Replace the batteries when the display contrast drops significantly or if you are unable to
switch on the device.
• If the battery level is too low, the device will automatically switch off 3 seconds after it is swit-
ched on. If this occurs, replace the batteries. To replace the batteries proceed as follows:
• Open the battery compartment cover
(6)
by turning it anticlockwise.
• Remove the used batteries.
• Insert two new CR2032 batteries into the battery compartment, ensuring that they are inser-
ted in the correct polarity (observe plus/+ and minus/- markings). The polarity is indicated
in the battery compartment.
• Replace the battery compartment cover
(6)
and tighten it by turning it clockwise. Ensure that
sealing ring in the battery compartment cover is in the correct position.
b) Pre/post-measurement procedures
1. Unscrew the battery compartment cover
(6)
in an anticlockwise direction.
2. Remove the screwdriver.
3. Replace the battery compartment cover
(6)
and tighten it by turning it clockwise. Ensure that
sealing ring in the battery compartment cover is in the correct position.
4. Remove the protective cap
(2)
.
5. Rinse the probe tip
(8)
with clean water and wipe it dry.
6. Press the button
(4)
to switch on the device.
The measurement probe
(7)
is a consumable part with a limited lifespan. For this
reason, the measurement probe is not covered by the warranty/guarantee.
If you run out of the standard solution, you can purchase more as an accessory.
Operating instructions
Conductance measuring stick LWT-04
Item no. 1763395
Intended use
This product is designed to measure the electrical conductance of water and aqueous solu-
tions. Typical applications include drinking water, waste water, surface water, swimming pools,
fish farms and process chemistry. The conductance provides information about the ion content
of a liquid. It is measured and displayed in S or μS. Conductance plays an important role in
drinking water treatment, water monitoring and in industry and laboratories. The device is pow-
ered by two CR2032 lithium batteries.
For safety and approval purposes, do not rebuild and/or modify this product. Using the product
for purposes other than those described above may damage the product. In addition, improper
use can cause hazards such as a short circuit or fire. Read the instructions carefully and store
them in a safe place. Only make this product available to third parties together with its operating
instructions.
This product complies with statutory, national and European regulations. All company and pro-
duct names contained herein are trademarks of their respective owners. All rights reserved.
Package contents
• Measurement device
• Standard 1413 µS
solution
• 2x 3 V lithium batteries
(CR2032)
• 1x screwdriver
• Carrying case
• Instructions manual
Up-to-date operating instructions
To download the latest operating instructions, visit www.conrad.com/down-
loads or scan the QR code on this page. Follow the instructions on the web-
site.
Explanation of symbols
The symbol with an exclamation mark in a triangle is used to highlight important
information in these operating instructions. Always read this information carefully.
The arrow symbol indicates special information and tips on how to use the product.
Safety information
Read the operating instructions and safety information carefully. If you do not
follow the safety information and information on proper handling in these ope-
rating instructions, we will assume no liability for any resulting personal inju-
ry or damage to property. Such cases will invalidate the warranty/guarantee.
a) General information
• The device is not a toy. Keep it out of the reach of children and pets.
• Do not leave packaging material lying around carelessly. It may become a dange-
rous plaything for children.
•
Protect the product from extreme temperatures, direct sunlight, strong jolts, flam
-
mable gases, vapours and solvents.
• Do not place the product under any mechanical stress.
• If it is no longer possible to operate the product safely, stop using it and prevent
unauthorised use. Safe operation can no longer be guaranteed if the product:
- is visibly damaged,
- is no longer working properly,
- has been stored for extended periods in poor ambient conditions or
- has been subjected to any serious transport-related stress.
• Handle the product carefully. Jolts, impacts or a fall even from a low height may
damage the product.
• Consult a technician if you are not sure how to use or connect the product, or if
you have concerns about safety.
•
Maintenance, modifications and repairs must be carried out by a technician or a
specialist repair centre.
• If you have any questions that are not answered in these operating instructions,
please contact our technical customer service or other professionals.
