|CHOUR - Very low power Geiger Muller counter PC-GM4|
Device : Geiger Muller counter
Date : 2013-2015
Type : PC-GM4
Brand : Chour
Main parts: GM Tube SBM20, MSP430 Texas Instrument family processor, Imex module for High Voltage
Main characteristic : Average power consumption around 20µA.
Software : Downloading page.
PC-GM4 is a low consumption Geiger-Muller counter wich was the prototype for PC-GM3. So there is very little differences between the two counters. In particular, the software and the schematic of the logic part (processor) are identical. The only differences are:
- The case, more basic. My idea is to put the counter into a dwelling place (just like an electronic barometer for example) to report any anomalies.
- The presence of a disconnectable galvanometer which allows to have an idea of the instantaneous measurement of radioactivity.
- The absence of a speaker intended to indicate the "tics".
These last two devices consume power and should not be used when using type "surveillance"
Analog schematic part