FTLab/Smart Lab Smart Geiger

[timoso san]

It is a compact (smallest that I know of) geiger-müller tube that plugs in to a smart phone (or tablet) audio jack, normally for head phones. Download the smart geiger android app for free or rad-meter app for a graph readout. Buy it from ebay for ~ 20$ it has a range of 0.01-200ųSv (Micro Sieverts) and will save you a lot of headache.

For a DIY project you would need to buy a Multimeter and/or several other components to assemble, and will NOT be even close in accuracy or performance to the Smart Geiger ☺ I added a picture for your convenience, hope this helped ☺

Best Regards Dr. Tim Halloran CEO of Halloran Inc.

[Ariel Levi Simons]

Is there any peer reviewed research testing this device against a known source?

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Ariel Levi Simons

[timoso san]

I will check with the manufacturer for additional info, but here is what i know:
Only testing performed during the prototype R&D and factory calibration Q&C.

I have tested it for Beta/Xray/Gamma against my Scintillometer Sr90/Y90-Check Source (the CPM is within +/-5%) Alpha pafticle test is tomorrow, I will let you know how it goes ☺

Dr. Tim Halloran

[Peter Loron]

These devices do not use a GM tube. They detect gamma via PiN diode. 

Ariel: They do work but are not all that sensitive and are mass-produced consumer goods rather than scientific instruments. Whether it will work for your application depends on many factors. If you can give us more details we may be able to help.

-Pete

[timoso san]

Sorry but... WRONG PETER!  Beta, X-Ray, Gamma and possibly alpha, I will know tomorrow.
This is a miniature Helium fillgass GM-Tube,thick walled end window type! And I can vouch for it. The tiny circuit at the base increases the voltage a little but due to t b e extremely high vacuum (micro Torr) there really is no need to step up the voltage beyond that! The only diode is used for V-drain, for user protection.

Dr. Tim Halloran CEO of Halloran Inc.

[Paul Dolk]

Hi,

> Op 7 jun. 2016, om 19:11 heeft timoso san <timo...@gmail.com> het volgende geschreven:
>
> Beta, X-Ray, Gamma and possibly alpha

I have one too, its from SmartLab and they have a range of sensors that you can connect via the earphone jack.

<http://allsmartlab.com/>
<https://www.youtube.com/watch?v=gPL8rutK6Gw>

The earphone jack is a potential weak point as the connection may falter and ruin your readings. But it’s cheap and easy to bring along.

The SmartLab Geiger is for Gamma only. Alfa is blocked by the housing as is Beta for the most part.

> This is a miniature Helium fillgass GM-Tube,thick walled end window type!

That would be a different animal entirely. A GM tube would need 400-500V from the circuitry in the base and I doubt that is possible in that size.

I myself use a SafeCast bGeigie Nano <http://blog.safecast.org> which has a GM tube with a mica window. It can detect alfa, beta and gamma when doing spot checks, and inside its case its for gamma only.
You can source the parts yourself, or get a kit from KitHub. The cost is on par with other hand held Geiger counters and personal dosimeters. The bGeigie is for mobile use, so it has GPS and micro card for writing out its data.

Background on SafeCast and bGeigie Nano:
<http://motherboard.vice.com/read/meet-the-hackers-building-a-sensor-network-for-global-radiation>
<https://media.ccc.de/v/29c3-5140-en-safecast_h264>




With kind regards,
Planetary Paul.

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[timoso san]

Like a disposable camera has a hard time getting +300V from a simple AAA battery?? This is simply done via IC! I suggest you to harvest you smart geiger, as i have, so you can see it also has mica as a front cover, as per most front end geigers, I havent tested Alpha yet, but i will tomorrow.

Dr. Tim

[Peter Loron]

Perhaps you have a different piece of equipment, but the company website clearly indicates a semiconductor sensor:

http://allsmartlab.com/eng/Smart_Geiger.php

On Tue, Jun 7, 2016 at 11:12 AM, timoso san <timo...@gmail.com> wrote:

Like a disposable camera has a hard time getting +300V from a simple AAA battery?? This is simply done via IC! I suggest you to harvest you smart geiger, as i have, so you can see it also has mica as a front cover, as per most front end geigers, I havent tested Alpha yet, but i will tomorrow.

Dr. Tim

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