Velleman VM200 User Manual page 4

English
1
2
3
4
Description
The VM200 has been designed to allow detection of elevated
1 Buzzer
radioactivity levels in an easy way. Elevated radioactivity is a
radioactivity level higher than the normal background radiation level.
2 indicator LED
When radiation is detected, the unit will beep. The number of beeps per
minute indicates the relative strength of the radiation. With normal
3 Control button
background radiation levels, the unit produces an average of 2 to 5
beeps per minute. More frequent beeping can point to elevated radiation levels.
Use
Press the button briefly to turn on the unit. The unit generates a single
beep. The indicator led will blink every 5s to indicate that the unit has
been turned on.
Press the button again to turn off the unit. The unit generates a double
beep. The counter tube, the part sensitive to radiation, is located near
the sounder.This is the most radiation-sensitive spot of the unit.
Description / use