This is a real working radioactivity counter. You only need a BLACK TAPE to cover the lenses !!
Disclaimer: The type of radiation picked up by the camera can be dangerous/detrimental to the user's health as well as cause damage to the device.
Its NOT a JOKE! The App is using the camera sensor to detect radiation, like a geiger mueller counter, of course with a smaller area. We tested several mobile phones at the Helmholtz research facility in Munich, using a professional radiation device in the range of 2-10 µGy/h till 1-10 Gy/h (CS137 and CO60). The CMOS sensors can detect primary gamma radiation and some higher beta radiation (depends on the shieldings in the mobile phone). Typically not going into saturation as most GM tubes. See FAQ on our homepage for what you can measure and how.
PLEASE SEND US FEEDBACK via EMAIL !! We add new devices in short intervals.
Attention: the tape must shield the light completely. Please check with a light source !
On our homepage you find several measurement result for different devices we tested so far. Some are excellent, some not that sensitive.
Feel free to use our table to assign radiation values to our counter measurements when you have the same device.
The real values might differ as sensors can change. There we need your help and the help of the manufactures for a future calibration service.
You can use the contact button in the help menu to provide us with feedback and please use it.
If you need any help, PLEASE send us an email. We have cannot answer the comment section below, so please ask us first on measurment problems. We help as fast as possible. Please contact us on any problems you have with this application! Look at our videos, more are comming soon. Attention: The counts per minute (CPM) for the background noise should be low (increase the noise setting if not). This is camera noise not radiation noise basically. If the radiation increases then also counts from the radiation adds to the CPM values (see our tables for the sensitivity). If you have a phone with 200 CPM for 100 uGy/h then the background noise produces for 100 nGy/h only 0.1 CPM. That means in 10 minutes ONE counts in 100 minute TEN counts adding to the CPM0 (noise of sensor). So you need a LONG time to measure for low radiation values on this device. Attention: AM241 (smoke detectors) only emit ALPHA rays, they get stuck in the plastic of the phones. H3 (tritium - watches etc) are beta emitters with 45 keV. They also get stuck quickly, mainly already in the watches. K40 (KCL for example contains 16 Bq/g) are beta emitters with small amount of gamma (due to positron collisions)- you need also a long integration time to measure them. Same for TH rods (2% Thorium) mainly alpha rays, then beta and some gamma. Very small diameter ! You need a large area to detect them (best GM with mica windows). The CMOS sensor of the camera only has 2mmx2mm.
Good objects are TH lenses (up to 30% TH232), pitchblend (gamma of decay products) and CS137 for checking food which might be contaminated (if larger 1 uSv/h). Don't experiment with radiation sources !!!
* saving raw counter values in 3 different noise levels
* saving temperature data
* saving location (optional)
* saving settings data
* export by email (CSV) or file, CSV / HTML
* export of mean values in Counts + standarddeviation
* unit converter (Sievert, Gray, Rem...)
We just released a comprehensive help on our homepage --
Important you NOISE value should be similar as in our tables, if it is too high check the tape to cover the lense - use multiple tapes if necessary and start calibration again !!! Please before writting a bad one star comment write us we will help you very quickly PLEASE !!!
more videos on our homepage -
instruction and help:
Instructions for use:
Preferences can be found by pressing the menu button. Many display options are available to customize what is on the screen.
The range on the meter can be changed in the options or by sliding your finger up or down on the screen. The left side of the screen adjusts the minimum, the right side adjusts the maximum. You can lock or unlock touch adjustments through the menu.
Auto Range Mode can be selected to affect the graph range, the graph and the UI range, or neither. It is suggested to select "Graph and Interface" to have fully automated range control.
Baseline Mode lets you set a baseline value that will be subtracted from the reading.
Custom color values can be set for the text and graph line. Sound can be enabled and customized in preferences, default is off. This will play a tone at a rate determined by the EMF reading, similar to a Geiger counter.
More detailed Instructions are available from the menu within the app.
This app was designed to be lightweight, fast, and free of gimmicks. Please email any questions, comments, concerns, or ideas. If you have any problems, please use email as this is the only way I will know how to reach you.
Valarm monitors external and built-in sensors to create an all-in-one remote environmental monitor and tracking device.
On devices with OTG or USB Host Mode, Valarm Pro can use Yoctopuce USB and some RS-232/serial sensors to monitor and alert based on various factors:
- Radiation (Mazur geiger counters)
- Air Quality/Dust/PM2.5 (Dylos DC1100 + DC1700)
- CO2 & VOCs
- Electrical resistance (switches, potentiometers, etc)
- Any/all 4-20mA sensors (4 channels, 2x Yocto-4-20mA-Rx units)
- 0-10V sensors
Valarm compatible sensors are available at http://shop.valarm.net .
Valarm also works with most Bluetooth OBDII adapters to monitor a vehicle's status, and tie that data to its location via GPS. OBD2 sensors currently include throttle, speed, RPMs, and coolant temp. See http://www.valarm.net/obd2 for more details about OBDII support.
Built-in sensors include:
- Accelerometer (motion)
- GPS (speed, geofencing)
- Microphone (audio)*
- Ambient light
Valarm responds to configurable triggers, (limits/thresholds) set by you on each sensor:
- Send SMS/text msg
- Send email
- Post to Valarm Tools Cloud ( http://tools.valarm.net )
- Play an alarm sound
- Take a photo
- Record audio*
In other words, you can configure Valarm to send a text, email, or post to your account on http://tools.valarm.net , when any sensor is triggered by your settings, for example:
- Your vehicle goes too far, too fast, too close to an area (geofence), the accelerator is "floored" or the engine raced.
- The school or board room's CO2 levels go above 1500 ppm and productivity is dropping fast!
- Someone steals your camera bag/guitar/motorcycle
- Your A/C breaks down and your servers are overheating
- The lights go out on your aquarium or hydroponics
- Alert you of flooding / presence of water on the floor or in a tub
- Humidity in your greenhouse drops and your orchids are drying up!
Text and email messages include the GPS location of the device at the moment the sensor is triggered, and the value reported by the sensor. Other responses configure Valarm to record audio* or take photos when someone is tampering with your property.
The Interval Timer allows automatic recording of the status of configured sensors at regular intervals (data logging), including taking photos and recording audio*. This allows you to graph all values on the tools.valarm.net website, as well as plot all locations on maps.
Valarm integrates with http://tools.valarm.net to provide mapping, graphing, historical analysis, and export to CSV or KML for analysis in Esri ArcGIS, Excel, MatLAB, and Google Earth (see http://www.valarm.net for examples and tutorials). A basic account for a single device is free, and allows you to see all sensor values posted by your Valarm equipped device, plotted on a map. Subscribers get more tools (details at www.valarm.net) & support for unlimited devices to be integrated and managed on the web or your site with APIs for real-time JSON, CSV, KML, + GeoRSS feeds.
NOTE: Devices running Android older than 3.1 can use Valarm Classic, which does not support external USB sensors. Valarm Classic is compatible with devices back to Android 2.2, however on newer devices (Android 3.1+) the camera will not function. Valarm Pro supports these devices, and also includes support for USB sensors.
Valarm includes a "Call-Me-Back" SMS remote-control command. This requires the "Make Phone Calls" permission! Valarm also sends/receives SMS/Text Messages!
* Audio/Mic support is considered "beta" and known to be unstable on some devices.
The most important part for the detection of the radioactivity is the camera chip of the smartphone. During the measument absolutely no incident light is allowed for the camera. Therefore the camera lens must be sealed e.g. by a black insulating tape. Of course you can keep the lens shut by your finger, but sometimes a little light shines through the fingers. In this case use at least additionally a cloth to shut the lens.
First calibrate the radioactivity-meter for your smartphone-hardware:
a) Fix the zero point where no radioactivity is caught by the smartphone. The zero point must be fixed at the lowest temperature of all future measurements.
b) Measure the radioactivity at a place, where the current radioactivity is known and assign this known gauge value and its unit to the value, measured by your smartphone to establish a relation between the internal hardware-dependent values of the smartphone and the real absolute quantity of radioactivity. The more exact the calibration and the higher the gauge value, the better the measurement results. From then on your radioactivity-meter is able to indicate the current radioactivity.
Due to the different hardware of the various smartphones we cannot ensure, that Radioactivity-Meter works on all smartphones with sufficient accuracy.
Since Radioactivity-Meter uses statistical algorithms to calculate the stochastic noise processes, the measuring situations should be always as similar as possible to avoid deviations of the metered values: same ambient temperature (without the zero point fixing), same up time of the smartphone, same method for sealing the camera lens etc. For this reason only single measurements are possible, no continuous measurements.
That way you can use your smartphone to determine at least the tendency for the changes of the radioactivity radiation.
SPITCONSULT expressly disclaims any warranty for its software products. The software products are provided 'As Is' without any express or implied warranty of any kind, including but not limited to any warranties of merchantability, noninfringement, or fitness of a particular purpose. SPITCONSULT does not warrant or assume responsibility for the accuracy or completeness of any information, text, graphics, links or other items contained within the software products. SPITCONSULT makes no warranties respecting any harm that may be caused by the transmission of a computer virus, worm, time bomb, logic bomb, or other such computer program. SPITCONSULT further expressly disclaims any warranty or representation to Authorized Users or to any third party.
LIMITATION OF LIABILITY
In no event shall SPITCONSULT be liable for any damages (including, without limitation, personal injury, lost profits, business interruption, or lost information) rising out of 'Authorized Users' use of or inability to use the software products, even if SPITCONSULT has been advised of the possibility of such damages. In no event will SPITCONSULT be liable for loss of data or for indirect, special, incidental, consequential (including lost profit), or other damages based in contract, tort or otherwise. SPITCONSULT shall have no liability with respect to the content of the software products or any part thereof, including but not limited to errors or omissions contained therein, libel, infringements of rights of publicity, privacy, trademark rights, business interruption, personal injury, loss of privacy, moral rights or the disclosure of confidential information.
Keywords: Geiger counter,Radioactivity,Radiation Detection
La atenuación de la radiación ionizante es:
- Directamente proporcional al espesor y densidad del material.
- Inversamente proporcional a la energía del haz de radiación.
Nuestra aplicación toma en cuenta todos estos factores, y mediante cálculos matemáticos ofrece un estimado del tiempo de exposición necesario para lograr la radiografía con la mayor calidad y contraste posible. Estos cálculos se aplican a radiación ionizante mediante rayos gamma.
Geiger Type6 (USB) onto your Android device.
You can purchase Pocket Geiger Type6 device on http://www.radiation-watch.org
* This software includes some source codes distributed on the Apache
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