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This item is a brand new & newly designed digital Geiger Counter/Data recorder GQ GMC-300 set. Real-time Graphic, Text and Large Font(newly added in Re2.20) display mode (Record radiation data and Play it back later)This is a ready to go set. Everying included. No any adjustment needed.
Place it anywhere and then read the value.
The GQ GMC-300 digital Geiger Muller Counter is designed by GQ Electronics LLC, USA. It is designed to be a portable andconvenient device. The device comes with built-in audible and visual signals for the level of radiation detected. It can beused for radiation detection, monitoring in door, out door and other similar environment. It featured auto data recorder.It can continually monitoring the radiation and log the each second data into internal memory. When it connected with a PCsoftware, the radiation history data can be downloaded to computer and user is able to do analysis data later.
The device equipped a USB port for both USB communication and external power supply/charger.
The GQ GMC-300 installed a high capacity rechargeable battery. With power adapter, the battery can be charged while the datacontinually monitored. So never worry about the battery and lost data.
The main board also has a real-time clock for all time related data log.
The USB port communicates with GQ soft Geiger counter software and the history data viewer software. The GQ soft Geigercounter software is an exact copy of the GMC-300. You can download it for free and experience the GMC-300 before you getit.
The GQ data viewer software can download the history data in the unit and save it on computer for future references.
Specification:
- Radiation detection: Beta and Gamma .
- Sensitivity to Gamma Radiation: 0.1~1 MeV
- Own Background: 0,2 Pulses/s
- Working Voltage: 6~9V
- LCD Display: Dot matrix with back light
- Working power: 0.045W - 0.2W
- Power: 9V battery / USB power
The following CPM data is measured by GMC-300:
| Source | CPM reading | | Background | 20~40 | | Public park granite table | 50~83 | | Uranium glass bead 238U | 320 | | Uranium ore 238U | 2905 | | Standard 5uCi radioactive source | 26500 |
For technical support, please visit our support forum: http://www.gqelectronicsllc.com/forum/default.asp
Try the exact copy of GMC-300 before you get it, please visit: GQ GMC-300Soft Geiger Counter
 
http://www.youtube.com/watch?v=ajHblLKx1dU
http://www.youtube.com/watch?v=0qHpNRBFjHg
Measuring on Antique Vintage Radioactive Red Fiestaware Dinner Plate and candy Jar
http://www.youtube.com/watch?v=cyvFGxCAUWg
Main features:
- Small,portable hand-held
- Audio and visual indication for nuclear radiation detections.
- Dot matrix LCD digital display model with back light.
- USB Data port for connection with computer/PC/laptop GQ Soft Geiger Counter software
- Battery charging feature for charging internal battery.
- USB DC input port for external power input, so that continually monitoring become possible.
- Powerfull conter circuit is capable for handling counting up to 65,535 CPM (Count Per Minute).
- Hign sensitivity tube M4011 installed
- built-in battery charging circuit
- On-board real-time clock
- On-board flash memory for history data record
- on-board speaker.
- Dimension: 5'x2.85'x1'
- 9V battery or DC power adapter operation
- Text mode provide maximum data information. eg. CPM, Date, Time, Elapsed time, uSv/h, mR/h etc.
- Real-time graphic mode provide visualized real-time radiation changes, so that much easier to observe the data changes. Italso display the CPM rate at same time. In Graphic mode, the ZOOM feature let user to see from lowest to highest graph onscreen.
- Back light Control to set the back light ON,OFF and timeout. So that to save the power.
- Battery charging and battery level indicator.
- Speaker ON/OFF control.
- Alarm setting. It sets the alarm ON/OFF, alarm type, alarm level.
- Date time set the real-time clock.
- Swivel display setting. Auto 180 degree swivel display provides a convenience reading when unit upside down.
- Three points calibration. For CPM to uSv/h and mR/h conversion
- Power saving mode let unit keep running at minimum power.
- Data saving mode selection. let unit record data every second/minute/hour. Up to 7 days history data
- History data searching
- and more....
Package include items:
GQ GMC-300.USB cableDC power wall adapter/chagerDC power car adapter/chagerQuick start guideDownload link for SoftGeigerCounter and USB driver for Windows XP/Vista/Win7 32 and 64 bits
For technical support, please visit our support forum: EnterForum Here
GQ data viewer software screen shot:
A Recorded History Data Example, CPM(Count Per Minute) Reading During the Flights
See here for original posting.
Count Per Second Reading During the Flights
See here for original posting.
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