Frequently Asked Questions
General
Our Geiger counter detects ionizing radiation such as alpha particles, beta particles and gamma rays using the ionization effect produced in a Geiger tube/sensor;
Please hold the on button for 3 seconds and you will see the model information on the screen.
The model is also marked on your package.
| CPM | uSv/h | mR/h | Meaning |
|---|---|---|---|
| 5-50 | 0.03-0.33 | 0.003-0.033 | Normal background |
| 51-99 | 0.33-0.65 | 0.033-0.065 | Medium Level Radiation |
| >100 | >0.65 | >0.065 | High Level |
| >1000 | >6.5 | >0.65 | Very High Level |
| >2000 | >13 | >1.30 | Extremely High Level |
Geiger counter can be used on real-time testing evaluation,
scientific testing on sample like: Building Material, Hospital Radiation
Therapy Monitoring for Cancer, Food, Water, Indoor/outdoor,X-Ray, and
more..
There are three type of radiation, Alpha, Beta and Gamma.
Alpha doesn't travel far from the source and is a weak type, can't pass through 1 piece of paper or the first layers of skin.
Beta, lasts longer than Alpha and can pass though multiple layers of skin.
Gamma is the worst. It's the type used in radiation therapy, Neutron is the last.
Reference
- Alert you once big incident happens: like a dirty bomb, Fukushima, Chernobyl.
- Carry the unit with you to test air, food, water, personal environment.
- Lab research, oil field, hospital radiation treatment.
- Nuke plant environment radioactive plume like Fukushima.
- Stone collection, marble counter-top, building material, antique collector.
- Space radiation, air industrial.
- Hospital-Radiation Therapy Monitoring & Radioiodine Treatment Monitoring.
- Real-time testing evaluation, scientific testing on samples.
- Measuring on Antique radiation level like Vintage Fiesta Dining Ware.
- Space Radiation Detection on the airplane.
Battery
The device will work about 2-3 days on a 100% charged battery with Power Saving mode on.
The GMC units can be charged by any standard USB power adapter, even a computer USB port. You can just connect the USB cable to any USB port.
When you receive the unit, the unit comes with a rechargeable battery and you can charge your unit with the USB cable in the package. You can remove the battery by simply open the battery case.
It can be plugged into an AC power supply, and it can stand with battery.
Software & GMC Map
Yes for Windows. No for Mac OS.
Download it from the app store and if you are an existing user with our GMC Map, your account/Geiger Counter information is saved.
If you are a new user, please click "Add" on your Geiger Counter Category. Then follow the tutorial.
Yes, we are always happy to improve! Please post in the forum or write us an email.
Compare
Please click "compare" on each item or check the comparison table.
Calibration
The unit has been calibrated during the production and QA process. There is no paper-based certificate in the package.
There is a calibration option in the unit menu. A standard radioactive source is used to calibrate the unit. The unit is been calibrated from the manufacturer. So, you do not need to calibrate it again if you use it
as regular measurement.
Support
Besides eBay/Amazon warranty, we also offer one-year factory warranty as the manufacturer
Before you buy, please check GQ Geiger Counter Selection Guide and try the exact copy of GMC demo software before you get it.
We provide future free download firmware updates and GQ online support forums.