Tunturi C25 ユーザーズマニュアル

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5

O W N E R ' S   M A N U A L  

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  C 2 5

rate reading will not appear on the display. If the 

electrodes are dry, they must be moistened again. 

Allow the electrodes warm up properly to ensure 

accurate heart rate measurement. If there are several 

telemetric heart rate measurement devices next to 

each other, the distance between them should be at 

least 1.5 m. Similarly, if there is only one receiver and 

several transmitters in use, only one person with a 

transmitter should be within transmission range. the 

transmitter is switched to an active state only when 

it is being  used for measurement. sweat and other 

moisture can, however, keep the transmitter in an 

active state and waste battery energy. therefore it is 

important to dry the electrodes carefully after use.

When selecting training attire, please note 

that some fibers used in clothes (e.g. polyester, 

polyamide) create static electricity, which may 

prevent reliable heart rate measurement. Please 

note that a mobile phone, television and other 

electrical appliances form an electromagnetic field 

around them, which will cause problems in heart 

rate measurement.

Pulse is measured by sensors in the handlebars. 

Pulse is measured when the user of C25 is touching 

both sensors simultaneously. Reliable pulse 

measurement requires that the skin is constantly 

touching the sensors and that the skin is slightly 

moist. Too dry or too moist skin weakens the 

reliability of hand pulse measurement.

First find your maximum heart rate i.e. where the 

rate doesn’t increase with added effort. If you don’t 

know your maximum heart rate, please use the 

following formula as a guide:

The formula gives an average value, the maximum 

varies from person to person. The maximum heart-

rate diminishes on average by one point per year. If 

you belong to a risk group, ask a doctor to measure 

your maximum heart rate for you.

We have defined three different heart-rate zones to 

help you with targeted training.

 

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 50-60 % of maximum heart-rate

Also suitable for weight-watchers, convalescents 

and those who haven’t exercised for a long 

TIME

. 

Three sessions a week of at least a half-hour each 

is recommended. Regular exercise considerably 

improves beginners’ respiratory and circulatory 

performance and you will quickly feel your 

improvement.

 

•

 60-70 % of maximum heart-rate

Perfect for improving and maintaining fitness. Even 

reasonable effort develops the heart and lungs 

effectively, training for a minimum of 30 minutes at 

least three 

TIME

s a week. To improve your condition 

still further, increase either frequency or effort, but 

not both at the same time!

 

•

 70-80 % of maximum heart-

rate

Exercise at this level suits only the fittest and 

presupposes long-endurance workouts.

The selection dial functions in two ways:

A) Rotating the dial (+ / -). By rotating the dial 

clockwise, you can scroll the menus to the right, and 

increase values or resistance. By rotating the dial 

counter-clockwise, you can scroll the menus to the 

left, and decrease values or resistance.

B) Pressing the dial (ENTER). By pressing the dial, you 

can accept the selection you made when rotating 

the dial.

Single push resets values. Long push restarts the 

meter. 

Calculates your recovery heart rate index.

Calculates your body mass index (BMI) and shows 

your body fat %.

Puts the meter immediately to the sleep mode.