Gamma-Ray Portable Spectrometer
The SPECT2113 Spectrometer is the state-of-the art portable hand-held radiation survey meter device for using in the geophysical industry. It offers an integrated design with a large detector, direct Assay data, data storage, full weather protection, ease of use and highest sensitivity in the market segment. 4.3 inch large colour LCD .two types 2"x2" NaI(Tl) or 2"x2" BGO


SpectroscopySpectroscopy GroupSPECT2113


  • NaI(Tl) or BGO detectors,103 cm3 (6.3 in3 )
  • Extreme sensitivity with unique Full Spectra Analysis 2x greater than Nal crystal of the same volume
  • Light Weight 4.5 lb (2.54 kg) including batteries
  • Display:
    • Full-color touch LCD display 
    • Large color LCD 4.3"
    • Multi-touch (Optional)
    • Easily view log files with no need to connect to a computer
  • Assay mode readout in K%, ppm of U & TH (Online Spectra)  
  • Auto-stabilizing on naturally occurring radioelements
  • Fast audio output with the adjustable audio threshold set point
    • Internal GPS integrated
  • Special rugged design to withstand typical field usage, waterproof against streaming water and fully dust protected
  • Low power (31Wh Li-on) typical 5h battery life at 20°C with External battery pack 10h battery life. 
  • No radioactive sources required for proper operation. 


The SPECT2113 Spectrometer is the state-of-the-art portable hand-held radiation survey meter devices for use in the geophysical industry. It offers an integrated design with a large detector, direct Assay data, data storage, full weather protection, ease of use and highest sensitivity in the market segment.
The spectrometer is auto-stabilizing on the naturally occurring (K, U, Th) radioactivity and does not require any test sources. With this convenient, handheld instrument offers the equivalent performance of much larger, and more costly, portable units. For example, a 120-second measurement with the SPECT2113 handheld provides comparable quality as the same measurement using 2x (in3) Nal portable detector.
Survey and Scan Modes: Total Count Readout is 1x/sec rate in the Survey Mode or can be adjusted (1 - 20 sec.) in the Scan Mode. When used with a GPS receiver, data can be stored and profiles are produced which is ideal for both area surveying and drilled core.
Assay Mode: The assay mode provides the concentrations of K, U, and Th as shown in the display below. The user can select the desired sampling time.
CFP - Analysis Software: The SPECT2113 is provided with utility software to download the data that is stored in memory. All data in the memory can be handled via USB to the SPECT - Analysis program on a PC in the form of 4096 channel spectra, data or Scan data + GPS. The program also gives graphical and numerical views of the data. The data can also be re-exported as a text file for further processing.

Electrical and Mechanical Power Required:

  • Typical Power Requirements:
    • Standard version +19V (2A) DC adaptor
  • Physical:
    • Size: Dimensions & package style 45 X 35 X 20 cm (L X H X W)
    • Weight: Without batteries 1.8 kg, with batteries 2.1 kg, Shipping 5 kg


  • Auto Calibration
  • Auto Stabilizing with the natural source Progress bar for elapsed time Configuration menu
  • Date and time menu
  • Cs137 Calibration

User interface :

Main menu (Assay,... ) Survey Histogram Settings Logs

Cs137 Calibration:

HV adj HV Set Find Cs peak Energy Calibration Cs-137 Resolution Calc

Standard Accessories:

  • SPECT2113 NaI Crystal
  • Standard Car kit
  • SPECT - Analysis utility software
  • USB cable
  • User guide DVD
  • Delivered in the hard case with foam insert

SpectroscopySpectroscopy GroupSPECT2113


  • Large Full color Graphic LCD (800 x 480) pixels, 4.3 inch

Energy Response:

  • 20 keV - 3000 keV.

Internal Sampling:

  • 20 /second 


  • Internal battery pack module (3 cell Li-ion)
  • Rechargeable Life: 5 + hours at 20°C


  • Operating Temperature: -10°C to +50°C
  • Storage Temperature: -20°C to +50°C.
  • Rechargeable battery kit
  • Control: 4 buttons, thumb activated 
  • Internal Memory: Huge 40GB SSD
  • Data Output: CSV, TXT, MCA, KML, XLS, LOG 


  • Audio via miniature speaker
  • The variable audio threshold set point
  • Audio Alarm proportional to the count rate


  • Search Mode: Counts in CPS from 0 to 500k and Hist 32bit x 4096
  • Assay mode: Display in %K, ppm of U & Th (ROIs according to IAEA)
  • Data Input /Output : (Using supplied CFP-Analysis software)  
    • USB
    • Internal GPS

Memory : 

  • SSD 40GB 
  • Storage unlimited Total Count, Scan, Assay, plus full spectrum in 32bit x 4096


  • Without batteries 1.8 kg, with batteries 2.5 kg, Shipping 5 kg.
    • Standard version +19V (2A) DC adaptor


  • Spectrometer  27 X 15 X 10 cm (L X H X W)
  • Package style 45 X 35 X 20 cm (L X H X W)
File Format Spectrometer-SPECT2113-Catalog.pdf en 2/13/2016 11:59:40 AM
File Format Spectrometer-SPECT2113-Certificate .pdf en 6/18/2016 11:18:27 AM
File Format Digital-Portable-Spectrometer-SPECT2113-CE.pdf en 6/11/2017 4:32:15 PM
File Format SPECT2113-Mechanical.pdf en 7/28/2016 10:23:19 AM

SpectroscopySpectroscopy GroupSPECT2113


  • Determination of concentrations of natural radioactive elements (K %, U ppm, The ppm)
  • artificial radiation sources identification
  • dose rate measurement
  • radiation monitoring and mapping
  • geological and raw material survey (uranium ore)
  • laboratory assays
  • healthcare

Gamma Surveyor offers three basic measuring modes:

  • Spectra & Assay - spectral measurements with the determination of K %, U ppm, Th ppm concentrations
  • Dose rate - precise radiometric measurements
  • Search - quick and selective search for gamma-ray sources (1 sec response time)
 The measuring system supports point, profile, and continuous measurements as well as the use of external GPS data.
The methodology is based on the recommendation of IAEA (International Atomic Energy Agency). 
The factory calibration is done on high-volume standards. 

SpectroscopySpectroscopy GroupSPECT2113

1. Coefficient of Variation (CV):

Reference number: CEI/IEC 1239, ANSI N42.34-2006.
The coefficient of variation is reported as a percentage and calculated from the average and standard deviation as follows:
 100 *  (Standard Deviation/Average)
For example, a CV of 1.94% in 1500 cps means the standard deviation is equal to 1.94% of the average.  For some measures, the standard deviation increases as the average increases.  In this case, the CV is the best way to summarize the variation.  In other cases, the standard deviation does not change with the average.  In this case, the standard deviation is the best way to summarize the variation.
cps %Coefficient of Variation %Coefficient of Variation STD
150 3.8 <8.1
500 1.94 <4.5
1500 1.23 <2.5
5000 0.5 <1.4
15000 0.49 <0.8

2. CS-137 Resolution Test: 


3. Survey Mode:

GPS Positioning and Digital Map Processing in 2D and 3D:
GPS Plot