Specifications - Safecast/bGeigieNanoKit GitHub Wiki
Part |
Description |
LND 7317 sensor |
“Pancake” Halogen-Quenched Geiger-Mueller (GM) tube, 2”; Effective diameter 1.75” (45 mm); Mica window density 1.5-2.0 mg/cm2. Capable of detecting Alpha, Beta and Gamma radiation. Comes with Medcom iRover controller and HV (high voltage) supply. |
Alarm LED |
Activates when radiation level meets the warning level you've set. The level ranges from 0 to 99,999 CPM (maximum to about 1mSv/h dose rate). |
Dual CPU from Atmel/Arduino |
The Arduino Fio board is based on the Atmel AVR ATmega328P microcontroller, and uses open-source software. |
OLED display |
128×64 high-contrast. Supports two OLED display sizes. |
Blue indicator LED |
Indicates when a nuclide is detected. |
Red indicator LED |
Indicates whether the device is in recording mode (bGeigie mode) or alarm mode (xGeigie mode). |
Orange indicator LED |
Indicates charge status. |
Buzzer |
Can be switched off. |
Battery status indicator |
For 2000mAh 3.7V 7.4Wh Lithium Polymer battery** (Li-Po) that powers about 40 hours of nonstop operation in bGeigie mode. Mini-USB rechargeable. |
GPS module |
-165 dBm sensitivity, 10 Hz updates, 66 channels. |
SD card |
2Gb micro-SD card. Parameters configurable through settings file on micro-SD card (according to Safecast API geo-tagged logging format, customizations, etc.) |
3.5 mm Apple audio data communication cable and jack |
Sends pulses to the Safecast iOS app. |
Real-time clock |
|
Pelican 1010 micro case |
Clear plastic, hinged cover and strong latch. Water-resistant (not for submerging), crushproof, and dust-proof when closed. Removable liner (in yellow, black, blue, or red). Comes with a strap, plastic buckle and carabiner (spring hook) for easy carrying or secure mounting on a vehicle. (Compact size fits some bicycle cases.) |
Function button |
User assignable. |
Wireless option |
BLE-enabled Bluetooth, 802.15.4 or Wi-Fi supported through Xbee socket. Sends data wirelessly to bGeigie Ninja or smartphone app. Wireless components not included in this kit. |
Features
Modes
The bGeigie Nano has three modes.
bGeigie Mode |
xGeigie Mode |
iGeigie Mode |
Mobile radiation sensor logging with display indicators for CPM and µSv/h, number of satellites locked, altitude (m), distance traversed (km), total duration of measurement (h:m), and time stamp (dd:hh:mm:ss) |
Geiger counter (no logging) with display indicators for µSv/h dose-rate (Cs137), max dose-rate, dosimeter, CPM, Bq/m2 (Cs137), time stamp, and alarm LED |
iPhone-compatible output for the Safecast iOS app that displays dose rate, maps data, and uploads data to the Safecast API in real time |
- Note that there is a hot switch for switching between bGeigie (logging) and xGeigie (no logging) modes. Data recording will be paused in xGeigie mode.
Other Features
Feature |
Description |
Dual use modular design |
main unit can be taken out of case for α-, β-detection, for careful use as surface contamination spot meter |
Operating range |
μSv/h: .000 to 1,000 ; mR/hr: .000 to 100 ; CPM: 0 to 350,000 |
Accuracy |
+/- 10% typical, +/- 15% maximum [* as with Onyx ?] |
Temperature range |
-20 to +50 C, -4 to +122 F [* as with Onyx ?] |
Calibration |
Cesium-137 (gamma from daughter metastable Barium) |
Gamma sensitivity |
334 CPM per uSv/h (3340 CPM per mR/hr) referenced to Cs-137 |
Certifications |
(in progress, TBA*) |
Further information is available at the Nano catch-all landing page.