In the eighties occurred in Kramatorsk terrible story: Five-story building in a concrete wall accidentally hit a powerful source of radiation. For nine years, four apartment dwellers died of leukemia, several people were injured.
If people living in the apartment was a dosimeter, all would be left alive. That is why I believe that the dosimeter is necessary for everyone. His first very primitive dosimeter I collected myself (he was able to click a loudspeaker in contact with a charged particle in the sensor), the second (also homemade) bought after the Chernobyl disaster. The new dosimeter I bought after Visit Semipalatinsk polygon (ammo1.livejournal.com/974055.html). It is one of the cheapest dosimeters on the market, at the same time he has a huge advantage compared to most expensive models.
Radiation dosimeter "Spring 3" is worth 3990 rubles. It fixes the γ (gamma), β (beta) and X-ray radiation. The screen displays the radiation level in microsieverts per hour. There audible alarm when you exceed the radiation levels. You can turn on audible and visual indication of the position of each particle (this allows you to quickly search for the point sources of radiation). And most importantly - the device operates continuously, continuously measuring the level of radiation, and the battery lasts for 10 years.
In the display shown in mikrozivert radiation level per hour (generally 1 roentgen / hour is 0.01 mikrozivert / hour). It uses an intelligent measurement system: the number of pulses counted in simple devices per minute and the value for the display is updated only once per minute, here is used a statistical calculation and the display value is updated each give me a sec.
On the right side of the device is the speaker, on the left - the red LED. If enabled in the alarm mode, when you exceed the current level of radiation speaker starts beeping loudly, LED flash. You can enable the display of each particle, prior to registration speaker emits a short beep and the LED flashes. Managed by the dosimeter single button.
A short press of the button switches the two modes of the display - the hours and the level of radiation, while in both modes, the device continues to measure the level of radiation and signal when it is exceeded. By default, five minutes after the radiation level display mode is automatically the transition to the "clock" mode, but can be switched off - then the device will always show the level radiation.
Two-second press of the button turns off the device. If you continue to hold the button, the device turns on again and goes into setup mode. In this mode, you can change 11 parameters. To move to the next option you need to hold the button for 5 seconds, so that the process is not fast any setting (however, the setting is done once).
When you turn off the sound of detecting the photon switches off also LED indication, so do not need to turn off the LED. SHU option is better to put in the state, then the device will not, switch from display radiation levels in the time display mode.
Spring 3 does not differ in accuracy from the majority of both household and professional dosimeters, because most sensor dosimeters worth the same - SBM 20-1 production corporation Rosatom.
I check what level of radiation Spring shows the plane at an altitude of 10 000 meters.
Maximum recorded value - 2.85 mSv / h or 285 mR / h (if you do not know the level of radiation in the plane actually exceeds the allowed 15 times).
If you have not read my article Misconceptions about radiation ( https://ammo1.livejournal.com/974653.html)Be sure to read!
I use the dosimeter for 10 months, and the battery level is still showing 100% (I use the device in a mode of constant radiation level indication). It looks like he really worked for 10 years on the batteries that were supplied.
Lack at the spring 3 is probably one - a very long setting (to go through all the steps necessary to 11 just hold the button for 5 seconds), but the configuration is done once, so this lack of insignificant. In my opinion totally unnecessary in the device clock - if they were not, and it would be the setting items on the three lower and the setting would be performed faster. But overall a great device.
The probability that in an apartment or cottage is accidentally radioactive item is rather low, but it is. I think it is always better to have the confidence that there is no danger, and for that I recommend everyone to have a small household dosimeter radiation.
© 2019 Alex Nadozhin