Beurer PM 250 - Handbuch (Seite 17)

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and carefully moisten both sensors with saliva,
water or ECG gel (available from pharmacies).
Contact between the skin and the chest strap
must not be interrupted when there is significant
movement of the ribcage, such as when taking
a deep breath. Chest hair may interrupt or even
prevent contact.
Put on the chest strap a few minutes before com-
mencing training to allow it to warm to body tem-
perature and to establish optimum contact.
3. Activating pulse measurement
3.1 Pulse measurement with a smartphone
• Activate the Bluetooth
® function on your smart-
phone.
• Open the “Runtastic PRO” app.
• Select “Settings” in the menu bar.
• Select “Heart rate measurement”.
• Activate the Bluetooth
® interface. Now wait until
connection to the chest strap is established.
NOTE
The service life of the transmitter unit battery is
approx. 1 year when used for 1 hour per day. If
transmission between the transmitter unit and
the chest strap ceases to function, replace the
battery as detailed under “Replacing the trans-
mitter unit battery”.
3.2 Pulse measurement with training devices
(e.g. in the fitness studio) and heart rate moni-
tors with analogue signal transmission
The pulse signal is sent via Bluetooth
® smart
technology as well as via analogue signal trans-
mission.
NOTE
Pulse measurement only works with training
devices and analogue heart rate monitors that
have an uncoded transmission frequency of
5.3 kHz.