Radiation Analyzer

KC761 Radiation Analyzer

Handheld gamma spectrometer with a 2.54 cm³ CsI sensor and a 16 mm² PIN α window for fast field verification.

2.54 cm³ CsI sensor 5.9% FWHM α window, 16 mm² PIN Neutron option AA battery powered Bluetooth + network IP65 High sensitive

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Key Advantages

Engineered for Field Reliability

IP65 Waterproof

Sealed for outdoor missions and harsh environments.

App Connection

Bluetooth-ready for mobile workflows and logging.

Shockproof Shell

Rugged housing for field deployment and transport.

Extensive Interfaces

Bluetooth, Ethernet, PoE, and pulse output.

Up to 5.9% FWHM

High-resolution gamma spectroscopy performance.

4 Models Available

Choose the detector stack that fits your mission.

Dual Modes

Spectrum analysis and dose monitoring together.

AA Battery Powered

Replaceable cells for long-term storage readiness.

Product Overview

Spectrometry-Driven Measurement Core

KC761 combines a scintillation detector with an integrated multi-channel analyzer to deliver energy spectrum, dose rate, and nuclide identification in one handheld platform. This architecture produces richer radiation insight than conventional Geiger counters while remaining field-ready.

Detector Stack

CsI + SiPM, optional 6Li glass, 16 mm² PIN

Resolution

FWHM performance down to 5.9%

Interfaces

Bluetooth, Ethernet, PoE, 3.5 mm pulse output

Environmental

IP65 sealing, floatable housing, extreme altitude operation

Measurement Focus

Key Technical Capabilities

Energy spectrum analysis with stable temperature compensation
Simultaneous dose rate and spectral workflows
Long-life AA power design for emergency readiness
Rugged shell for exploration, security, and incident response

Measured Spectra

Isotope Identification Samples (KC761B)

Representative field spectra.

K40

Potassium-40 reference spectrum.

Ra226

Radium-226 identification spectrum.

Co60

Cobalt-60 source spectrum.

Applications

Designed for Real-World Radiation Workflows

Nuclear Facility Screening

Identify contamination of soil, food, utensils, and nearby surfaces after incidents.

Reagent Leakage Detection

Verify leakage of nuclear reagents and medicines with precise energy signatures.

Nuclide Identification

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

Building Material Monitoring

Assess radiation levels in stone, tile, and living environment materials.

Security and Investigation

Support security checks, accident investigations, and production monitoring.

Medical Site Monitoring

Monitor diagnostic and treatment areas for radiation safety.

KCSDI Software

Control, Capture, and Analyze Faster

KCSDI provides unified control and workflow management for KC761 devices, bringing
capture, review, and reporting into one desktop environment.

Open KCSDI Page

Model Lineup

Choose the Detector Stack That Fits Your Mission

KC761CN

5.9% FWHM

6Li + CsI + PIN

KC761C

6.2% FWHM

CsI + PIN

KC761B

7.5% FWHM

CsI + PIN

KC761A

8.2% FWHM

CsI + PIN

TECHNICAL SPECIFICATION

Object	Condition	Min	Typical	Max	Note
Energy	γ & X	9keV		3MeV	Window open when measure a radiation
	β	50keV		4.5MeV
	α	3MeV		10MeV
Absorbed Dose Rate of Gamma	30~500keV			100uGyh-1	Energy measurement range
	0.5~1MeV			200uGyh-1
	1~3MeV			500uGyh-1
	Strong radiation alert	100uGyh-1		100mGyh-1
Gamma Energy Scale Uncertainty	100cps - 10kcps		± (1%+5k)	± (2%+10k)	At the time of delivery
Gamma Energy Resolution	662keV, 100cps - 10kcps		7.5%	7.8%	KC761B
			8.2%	8.6%	KC761A
			6.2%	6.5%	KC761C
			5.9%	6.2%	KC761CN
Noise			0.01uGyh-1	0.05uGyh-1
Sensitive	662keV, 0.1uGyh-1		10cps
Power Voltage	DC	3.0V	4.5V	6V
Temperature Stability	Amplitude drift		≤ ±10%		-10~50C
	Energy drift		≤ ±(5%+20) keV
Long-term Stability	Gamma		(±5%+10keV)/a		KC761A/B
			(±2%+5keV)/a		KC761C/CN
Net weight	Batteries not include		285g		KC761A/B/C
			305g		KC761CN