6
7
ENGL
iSH
of measures to reduce the radon level – for example by increas-
ing the ventilation.
The building can be diagnosed by taking measurements for one
week. This should preferably be followed by long term measure-
ment in the room which has the highest radon value. For long
term measurement period and action level we recommend to
follow the guidelines from the national radiation authority.
The RESET button is used when the monitor is moved in order
to take a new measurement. This deletes all stored radon data.
Remember to note the previous measurement before using
the RESET button.
The MODE button is used to obtain information on how many
days measurements have been taken since the monitor was
started for the first time, or since the RESET button was last
depressed. This information is displayed on the lower half of
the screen for 20 seconds, after which the screen reverts to
the regular display.
Use a pen or similar to press the RESET and MODE.
When the monitor is connected to PC with the USB cable, dis-
play shows an indicator and the serial number of instrument
(for example SEr 64 15)
It is recommended that the monitor is activated continuously,
and that the batteries are not removed. The batteries last for
about 3 years, and they can be replaced without stored data
being deleted.
• If the screen displays the error message ‘Err’ and a number:
press the RESET button, remove the batteries and put them
back in
• Position the unit in a location that is representative of the air
that is breathed in this room
• The unit should not be exposed to direct sunlight or elec-
tromagnetic radiation; it should be positioned lying flat at
least 25 cm from the nearest wall, at least 50 cm above the
floor, and at least 150 cm from the nearest door, window or
ventilation device
• To permit self-calibration, the unit should remain untouched
for the first few minutes after start-up
• N.B.: Dependent on the radon level, expect a few hours before
the display shows other than 0 Bq/ m³. During the first few
days, the reading should be regarded only as an indication
of the radon level
HOW TO USE THE CANARY
• The long term average (LONG TERM AVERAGE) is the average
radon value over the last year (updated once every 24 hours)
• The short term average (SHORT TERM AVERAGE) alternates
between showing the radon value over the last day (1 DAY
– updated every hour) and over the last 7 days (7 DAYS – up-
dated once every 24 hours)
The long term average is used to identify any potential health
risk. The short term average is used primarily to see the effect
