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New GQ GMC-320 Geiger Counter Nuclear Radiation Detector Data Recorder Beta Gamma Ray Detection

4.2 out of 5 stars 16 customer reviews
| 6 answered questions

Price: $118.00 & FREE Shipping
Only 10 left in stock.
Ships from and sold by GQ Electronics LLC.
3 new from $118.00

Specifications for this item
Brand Name GMC
Part Number 320 Plus
Number of Items 1
Color white
EAN 0608939448834
Import Designation Made in USA
Item Weight 7.04 ounces
Power Source Type battery-powered
Shape Rectangular
Size pocket size
Temperature Rating 0-80
UNSPSC Code 46191501
UPC 608939448834

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  • New GQ GMC-320 Geiger Counter Nuclear Radiation Detector Data Recorder Beta Gamma Ray Detection
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Total price: $126.19
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Product Features

  • Compact Radiation Detector
  • Detects nuclear Beta, Gamma, X-Ray Radiation
  • Transfer data to PC. Record radiation data and Play it back later.
  • Compact, portable, light. Comes with carrying pouch.
  • Rechargeable, comes with USB, Wall and Car charging adaptors.

Product Description

The GQ GMC-320-Plus digital Geiger Counter is an enhanced version of GMC-320 and GMC-300. It added new features from previous model, such as front LED indicator, analog data port output, new graphic type etc.

It is designed to be a portable and convenient device. The device comes with built in audible and visual signals for the level of radiation detected. It can be used for radiation detection and monitoring both indoor and outdoor, as well as in other similar environments. It features automatic data recording. It can continually monitor the radiation and log the data each second into internal memory. When connected to a PC, software can download the radiation history data to the computer and the user is able to analyze those data later.

The device is equipped with an USB port, utilized for communication and external power supply/charging of the internal rechargeable battery. The GQ GMC-320 Plus internal rechargeable battery can be charged with the supplied wall adapter or with the car adapter for the cigarette lighter. Using the adapters, continuous data monitoring is possible. Using either power adapter you will not have to worry about the batteries charge condition or any data loss. The main board also has a real time clock on board for time related data logging purposes. The USB port communicates with the GQ GMC-320 Plus Soft Geiger Counter software and the GQ Geiger Counter Data Viewer software. The GQ Geiger Counter Data Viewer software can download the time stamped radiation (history) data from the unit and save it on a computer for future references and analysis. For professional data logging of radiation data, the GQ Geiger Counter Data Viewer(Logger) may be downloaded for free. An even more advanced version, may be purchased at low cost from GQ Electronics LLC.

Product Details

  • Product Dimensions: 5 x 1 x 2.8 inches ; 7 ounces
  • Shipping Weight: 10.6 ounces (View shipping rates and policies)
  • ASIN: B00EU8CLLE
  • Item model number: GMC 320 Plus
  • Average Customer Review: 4.2 out of 5 stars  See all reviews (16 customer reviews)
  • Amazon Best Sellers Rank: #116,313 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
  • Product Warranty: For warranty information about this product, please click here

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
I bought this and only had it for a week. It worked well for a while and the features were good but then I started to have problems. When I first got it the charge indicator was showing odd readings but i thought it just need to be drained and recharged. But after a week it wouldnt charge or turn on even if it was plugged into the computer. The unit also would reset the user setting every time i plugged it into the computer. I am considering buying the 300 but im sure. The unit was neat and had some good features but just had problems. One other thing I didnt like was that they give you the impression that its a US company and US made but the pictures show Chinese on the display. I have bought a oscilloscope from a Chinese company before and the product preformed similar to this; great idea just not a great product. Its like they dont take the time to make sure it works like it should.
P.s. The firmware upgrade has to be done in house which is extremely inconvenient. It might have been worth the bugs if they released a firmware upgrade that could be done by the user.
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Verified Purchase
I bought this unit because I wanted the data logging. Unfortunately, I received the unit and the GM tube was obviously not working. The unit powered up, let me navigate the menus but always read zero on the display. I have seen this in other reviews. I can comment on the construction, it's very poor. Cheap and light which I would be afraid to drop because it would most likely be damaged. The display backlight shines through the case mask on the top, bottom and sides of the LCD display which is a bit annoying. I know there has been some positive reviews but unfortunately I cannot give this a 4-5 star rating. I returned the item and spent the extra money on a professional high end brand which has been great!
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Verified Purchase
I have been unable to get my Geiger counter to interface with my computer. I have posted my problem on the manufacturer's help forum, tried to load the interface program onto 3 different computers, and had 4 friends who are fairly expert with computers try to make it work. Nothing worked. It does work well as a freestanding Geiger counter but inability to connect it to my computer is a bummer. ( I am posted under the name Teslabuilder on the manufacturer's help forum--i did get a few replies but nothing worked.)
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Verified Purchase
I have many cold war era units and I wanted one to log data so I could keep a long record of background levels, a reference point for where I live. I have an interface I built along with a program to log into a pc but that involves leaving the pc and old printer on all the time.
The unit worked just fine for what I wanted except for the data log. It was very random at times, it would sometimes keep a record for the entire day (1440 records), other times it only kept 200 records for the day. It also was limited/varied on how many days it would record until it dropped or missed days.
I also have a Mazur 9000 unit, very good, more money, but it will track a whole month of data and not miss anything. Its just a little more difficult to extract the data and the cost is higher.
The GMC unit is ok for very basic stuff I guess, but maybe my unit was a little flakey.
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I bought mine (a Raspberry PI and GMC-320) through netc.com to support their network of radiation monitoring. The GMC-320 has been functioning fine and sending data to their network with no problems. I can even see my own monitoring site and data on their map. Cool!

Update: As of 2/22/15, no problems with the GMC-320 unit and still sending data reliably to NETC.com through the Raspberry PI and my wireless router.
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Verified Purchase
I bought this device because I live near a nuclear power plant and I wanted to be prepared in the event of an emergency (yes I also have iodine pills too). We tested this unit against an americium source and registered as expected.

What's really neat is you can put this unit in a cell phone holder in a car while driving and observe background radiation as you travel. What would be really neat is if you could attach a usb gps sensor to it and gather coordinates and make a heat map of background radiation and overlay it on a map. Hrm. Maybe I can attach it to a cell phone and use the cell phone to do the dirty work of getting location data and logging it.....
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Verified Purchase
no volume control. clicks very faint made of cheaper then cheap plastic. save your money buy the inspector model and be happy
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Verified Purchase
I bought this in response to the spiking radiation levels in California from the reactor meltdown in Japan. I am not a scientist, but it was easy to follow the instructions and get it operating in a matter of minutes. Living within 25 miles of a nuke plant, it was reassuring that at least for now the levels are low in my area. Easy to use.
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