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Specifications
Mat Schaffer edited this page Apr 25, 2020
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| 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. |
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.
| 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.