Sper-scientific 840007 Radiation Detection Meter Manuel d'utilisateur Page 1

SPER SCIENTIFIC RADIATION MONITORS 840007, 840026 INSTRUCTION MANUAL

10 given off from natural radioactive minerals in the earth's crust is a major constituent of background radiation. For the most part, it is quit

11 Neutrons, having no net charge, do not interact with matter as easily as other particles, and can drift through great thickness of material without

12 LIMITED WARRANTY The 840007 and 840026 Geiger counters are warranted for 5 years on electronics and 1 year for G-M t

2 TABLE OF CONTENTS INTRODUCTION ... 2 CAUTION ...

3 BATTERY REPLACEMENT The unit is powered by a 9-volt battery. With the on button activated, the LED should be brightly lit. When the LED is no longe

4 sonable average time should be at least two minutes or more. The Geiger-Mueller tube is located behind the slots in the upper edge of the case. The

5 THIS IS THE POSITION IN WHICH TO HOLD THE GEI-GER COUNTER TO TAKE READINGS. It is important to understand this, for misleadingly high meter readings

6 beeps, at a rate that increases as the radiation level in-creases. Although this range is not as accurate as the dis-played range, beeping will begi

7 It is important to note that the field intensity from a radioac-tive object decreases very quickly with distance. If the object is very small, incr

8 Atoms are composed of three basic particles: protons, neu-trons and electrons. Electrons are extremely light, nega-tively charged particles that exi

9 The energy released in each decay can be enormous. This decay process is utilized in atomic reactors and bombs. When certain very heavy isotopes of