Radiation Analyzer

KC761 Radiation Analyzer

Handheld gamma spectrometer platform with spectrometry, dose rate, isotope identification, and optional neutron capability for field response, inspection, and long-duration monitoring.

2.54 cm3 CsI sensor 5.9% FWHM 16 mm2 PIN window Bluetooth + Ethernet IP65 housing AA battery powered

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Product Overview

Spectrometry-driven handheld workflow

KC761 combines a scintillation detector, multi-channel analyzer, and portable power system to give you energy spectrum analysis, dose monitoring, and isotope verification in one field-ready device.

Detector Stack

CsI + SiPM, optional 6Li glass, optional PIN alpha-beta window.

Resolution

Gamma energy resolution down to 5.9% FWHM at 662 keV.

Interfaces

Bluetooth, Ethernet, PoE, and 3.5 mm pulse output.

Deployment

IP65 sealing, floating enclosure, and emergency-ready AA cells.

Measurement Focus

Built for real field decisions

Energy spectrum analysis with stable temperature compensation and low noise floor.
Simultaneous dose-rate awareness and isotope identification workflows.
Rugged operation for security checks, incident response, and industrial inspection.
Wireless and wired data links for logging, software control, and reporting.

Key Advantages

Engineered for field reliability

IP

IP65 Waterproof

Sealed for outdoor missions, decontamination routines, and harsh sites.

BT

App Connection

Bluetooth-ready for mobile workflows, capture, and traceability.

RS

Rugged Shell

Shock-resistant housing for transport, patrol use, and daily field carry.

IO

Extensive Interfaces

Bluetooth, Ethernet, PoE, and pulse output simplify integration.

ER

High Resolution

Down to 5.9% FWHM for more reliable nuclide discrimination.

4X

Four Models

Select the detector stack that matches your mission profile and budget.

DM

Dual Modes

Spectrum analysis and dose monitoring in a single handheld platform.

AA

AA Battery Power

Replaceable cells support standby storage and rapid deployment.

Applications

Designed for radiation workflows that need context, not just counts

Nuclear Facility Screening

Check soil, food, utensils, and nearby surfaces after incidents or during routine inspection.

Leakage Verification

Verify reagent, source, and medical material leakage with energy-signature evidence.

Nuclide Identification

Distinguish thorium, uranium, radium, iodine-131, cesium-137, and more.

Material Monitoring

Assess radiation levels in stone, tile, industrial scrap, and living environments.

Security and Investigation

Support border checks, incident investigation, and production monitoring.

Medical Site Monitoring

Monitor diagnostic and treatment areas with portable spectral insight.

Model Lineup

Choose the detector stack that fits your mission

KC761CN

5.9% FWHM

6Li + CsI + PIN window

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KC761C

6.2% FWHM

CsI + PIN window

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KC761B

7.5% FWHM

CsI + PIN window

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KC761A

8.2% FWHM

Entry handheld spectrometer

Open product

Technical Specification

Performance overview

Metric	Range / Typical	Notes
Energy range	Gamma/X: 9 keV to 3 MeV	Alpha with open window, beta from 50 keV to 4.5 MeV.
Gamma dose rate	Up to 500 uGy/h, strong radiation alert to 100 mGy/h	Depends on energy band and alarm mode.
Energy scale uncertainty	Typical +/- (1% + 5 keV)	100 cps to 10 kcps, at delivery.
Energy resolution	KC761CN 5.9%, KC761C 6.2%, KC761B 7.5%, KC761A 8.2%	At 662 keV.
Noise floor	Typical 0.01 uGy/h	Maximum 0.05 uGy/h.
Sensitivity	Typical 10 cps at 662 keV / 0.1 uGy/h	Model and setup dependent.
Power	3.0 V min, 4.5 V typical, 6 V max	AA battery design.
Temperature stability	Amplitude drift <= +/-10%	-10 C to 50 C operating window.
Net weight	285 g for A/B/C, 305 g for CN	Without batteries.

Measured Spectra

Representative isotope samples

K40

Potassium-40 reference spectrum for field comparison.

Ra226

Radium-226 identification sample with clear energy features.

Co60

Cobalt-60 sample for source verification and training reference.

Isotope Library

Supported isotope categories

Natural Radioactive Material

40K
176Lu
226Ra
232Th
238U

Industrial Isotopes

57Co
60Co
133Ba
137Cs
192Ir
241Am

Medical Isotopes

18F
67Ga
99mTc
123I
131I
201Tl

Special Nuclear Material

235U
237Np

KCSDI Software

Control, capture, and analyze faster

KCSDI gives KC761 operators a desktop environment for acquisition, review, and reporting, making it easier to archive spectra, compare sessions, and generate deliverables.

Open KCSDI page

Downloads & Support

Manuals, firmware, software, and integration help

Use the official manuals for operation, install the latest firmware package, or move directly into the KC761 Mapper and KCSDI workflow.

User manual Protocol manual Firmware update Talk to support