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Operating instructions
FAS-100 Formaldehyde Meter
Item no. 2388642
Intended use
The FAS-100 formaldehyde meter can be connected to a smartphone or tablet and allows
measuring formaldehyde (HCHO) concentration in the ambient air. The meter is compatible
with most Android-based smartphones and tablets with a USB-C port and OTG function. The
free app supports Android version 6.0 and later. The meter is powered via the USB-C port of
the smartphone or tablet.
You can download the app onto your smartphone or tablet using the regular app portals (e.g.
Google Play Store). Your gadget should be connected to the Internet.
The meter can measure formaldehyde concentrations in the measuring range of
0.00 – 5.00 ppm at ambient temperatures of 0 – 50 °C. The measurement data record includes
a date and time stamp.
The app allows you to view the measurement as a value and graph and save it. Likewise, you
can get a quick overview of the formaldehyde concentration by highlighting the measurement
with traffic light colours (green, orange and red).
Any use other than that described above is not permitted and may damage the product. Fur-
thermore, there are dangers such as short circuits, fire, electric shock, etc.
The product must not be modified or reassembled!
Always observe the safety information in these instructions!
Delivery content
• FAS-100 formaldehyde meter
• Operating instructions
Up-to-date operating instructions
Download the latest operating instructions at www.conrad.com/downloads or scan the QR code
shown. Follow the instructions on the website.
Description of symbols
The symbol with the lightning in a triangle indicates that there is a risk to your health,
e.g. due to an electric shock.
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.
This product has been CE tested and complies with the necessary national and
European regulations.
Safety information
Read the operating instructions carefully and observe in particular the safety
instructions. If you do not follow the safety information and information on
proper handling in these operating instructions, we will assume no liability for
any resulting personal injury or damage to property. Such cases will invalidate
the warranty/guarantee.
• For safety and licensing reasons, the unauthorised conversion and/or modification
of electrical devices is not allowed.
• To ensure safe operation, the user must follow the safety instructions and warning
notices that are included in these operating instructions.
• For installations in industrial facilities, follow the accident prevention regulations for
electrical systems and equipment issued by the national safety organisation or the
corresponding national authority.
• In schools, training centres, hobby and self-help groups, the trained personnel
shall responsibly supervise the use of soldering irons and accessories.
• Improper connection may cause short circuits or destroy sensitive components.
• Allow the device to reach ambient temperature before connecting it to the power
supply. The condensation that forms can damage the device. Allow the device to
reach ambient temperature before connecting it.
• If you suspect that safe operation is no longer possible, stop using the device
immediately and prevent unauthorised use.
• Safe operation can no longer be assumed if:
- the device is visibly damaged,
- the device does not function anymore and
- the device has been stored under unfavourable conditions for a long time or
- it has been subjected to considerable stress during transport.
• Make sure that you always have these instructions at hand to ensure safe
operation. Keep these operating instructions in a safe place and give them to any
subsequent owners.
Downloading the app
Go to the app portal (e.g. Google Play Store) and download the app for the measurement onto
your smartphone or tablet.
In the search field, enter the app name "Voltcraft HCHO monitor FAS-100" and start the search.
Select the app and install it on your gadget.
Connecting the meter
Before you connect the meter to your smartphone or tablet, start the Voltcraft HCHO
monitor FAS-100 app.
• Use the USB-C plug to connect the meter to your smartphone or tablet. It does not matter
how you connect the plug. While connecting the meter to your smartphone, ensure you
clearly see the housing openings and power indicator. If the power indicator lights up red, it
means that the meter is correctly connected to the power supply.
• Once the meter has been recognised by your smartphone or tablet, a confirmation prompt
pops up on the display.
• Confirm the prompt by tapping the "OK" button.
HCHO detector
Allow the HCHO detector to access UART Bridge Controller on CP2102USB? Cancel
• Tap "OK".
If you tap "Cancel", the meter will not be connected to your gadget and no measurement data
will be transferred.
App description and measurement
• The app is simple and intuitive.
• Use the following buttons to control the app:
• Tapping the "Home" button always returns to the home screen (Monitoring).
• "History" contains all measurement data records with date and time stamps. This menu
allows you to view the measurement data as a graph or list.
• "Settings" contains information about the app version.
• "Record" initiates measurement data recording with date and time stamp.
• "Screen Shot" allows the static storage of screen display in the image format (png).
• Use the Send button in the top right corner to forward the data.
• The Monitoring window displays the measurement data as a plain measured value at the
top and as a graph at the bottom. The measurement is highlighted in traffic light colours
(green, orange and red) depending on the height. The colour intensity of the highlighted
measurement also varies with the concentration. You can thus quickly visually assess the
concentration. The field in the middle displays the possible health risks for the current
average measurement.
The ambient air should flow about the sensor inside the meter for a few seconds
for the measurement to stabilise. Ensure the housing openings in the meter are not
obstructed so that the ambient air can freely flow through them.
OK.
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