一亩三分地
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精华 感谢“小地主”，uglyducking，Mikejia： 成功安装氡气排放设备
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Radon concentration in the atmosphere is usually measured in becquerel per cubic meter (Bq/m3), the SI derived unit. Another unit of measurement common in the US is picocuries per liter (pCi/L); 1 pCi/L=37 Bq/m3.[28]1 pCi/L = 37 Bq/m3
so Safety Siren Pro3 reading is less than 1.
Typical domestic exposures average about 48 Bq/m3 indoors, though this varies widely, and 15 Bq/m3 outdoors.[56]
让那些谈氡色变的人吃后悔药78
一亩三分地
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amazon.ca有便宜的
Safety Siren Pro Series3 Radon Gas Detector, HS79712 Canada
http://www.amazon.ca/Safety-Series3-Detector-HS79712-Canada/dp/B00643TO68
不过有人review报道说是false alarm
一亩三分地
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By
Jim S.
This review is from: Safety Siren Pro Series3 Radon Gas Detector, HS79712 Canada (Kitchen)
Drifted out of calibration over about a month - costs for evaluation and recalibration, shipping are uneconomical versus buying a better unit. No sense sending good money after bad. This unit is probably only good if you really have high radon levels. It is not surprising that Health Canada cautions: "Digital Radon Monitors for short- and long-term testing are also available on the market, however, Health Canada can not recommend their use".
Initially the unit registered around 40 and ranged up to 68 and back again. Then there was a steady trend upward to above 100 ... As a test putting the unit in a large plastic bag (limiting any radon access) and then was no corresponding (3.8 day half life) reduction in the reading. Even shutting the unit off for 10 days - leaving it in the bag. Resetting it and allowing 48 hours resulted in a high reading. So suspected zero drifting error.
So bottom line - no confidence in readings.
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我迷茫了，到底要不要色变？Radon concentration in the atmosphere is usually measured in becquerel per cubic meter (Bq/m3), the SI derived unit. Another unit of measurement common in the US is picocuries per liter (pCi/L); 1 pCi/L=37 Bq/m3.[28]
Typical domestic exposures average about 48 Bq/m3 indoors, though this varies widely, and 15 Bq/m3 outdoors.[56]
让那些谈氡色变的人吃后悔药78
