Bild: H3D

H3D

A Series (A400) RIID

Handheld RIID

A portable radioisotope identifier with directionality and high energy resolution without cryogenic cooling.

Detector type: A400: CZT (CdZnTe)1
Spectroscopy energy range: A400: 50–3000 keV1
Weight: A400: 1.2 kg1

Download product sheet (PDF)All values with references – for tender documents

Specifications checked against the manufacturer’s documents on 2026-10-16

Manufacturer’s product page (opens in a new tab)

Overview

Nuclear power & nuclear technology Defence, security & preparedness Emergency services & first response

Key features

Search for, identify and localize gamma sources.
CZT technology without liquid nitrogen.
Handheld instrument for field use.

Specifications

The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.

Detector

Detector type	A400: CZT (CdZnTe)1
Detector volume	A400: >19 cm³1
Neutron detection	Option A401: 16 cm² micro-structured neutron detector (MSND); 4.8 cps/nv from ANSI-moderated ²⁵²Cf (bare detector)1

Performance

Energy resolution at 662 keV	A400: ≤1.1% FWHM (coincident interactions combined), ≤0.9% FWHM (separated), at 25 °C; high-resolution option A400+: ≤0.8% and ≤0.65%1

Measuring range

Spectroscopy energy range	A400: 50–3000 keV1
Directionality energy range	A400: 250–3000 keV1
Localization range	250–3000 keV2
Sensitivity	A400: detects 10 µCi ¹³⁷Cs at 1 m (~3 µR/h) in <22 s in natural background; localises the source in <120 s to ±15°1
Dose-rate accuracy	A400: ±20%, 50–1500 keV, forward direction, ≤0.2 rem/h (2 mSv/h); optional calibration improves accuracy to ±10%1
Count-rate limit	A400: 1 rem/h (10 mSv/h) bare-¹³⁷Cs equivalent for spectroscopy1

Software & data

Nuclide library	A400: selectable from the manufacturer-provisioned master library1

Connectivity & interface

User interface	A400: embedded 3.5-inch screen with buttons; browser view1
Communication	A400: Wi-Fi, Bluetooth, USB-C; RJ45 Ethernet through adapter1
Data storage	A400: 32 GB internal, >1 million measurements; ANSI N42.42 XML1

Power & battery

Battery life	A400: >8 hours1
Power supply	A400: 100–240 V, 47–63 Hz1

Mechanical

Dimensions	A400: 30.5 × 7.6 × 9.5 cm (nominal)1
Weight	A400: 1.2 kg1

Environment & ratings

Operating temperature	A400: −20 to +50 °C1
IP rating	A400: IP651
Humidity	A400: up to 93% at 35 °C1
Certifications	A400: tested to pass ANSI N42.34 requirements; third-party DNDO TCS test report available on request1

General

Startup time	<1.5 minutes2

The data comes from the manufacturer’s published documents. Manufacturers may change specifications; the current configuration and performance are confirmed in the quotation.

Models

6 models in the series. Filter or scroll the table to compare.

6 / 6

Model	Energy resolution at 662 keV2	CZT volume2	Weight (manufacturer unit)2
A100	<1.1 % FWHM	>4.5 cm³	2.5 lb
A100+	<0.8 % FWHM	>4.5 cm³	2.5 lb
A200	<1.1 % FWHM	>9 cm³	2.6 lb
A200+	<0.8 % FWHM	>9 cm³	2.6 lb
A400	<1.1 % FWHM	>19 cm³	2.6 lb
A400+	<0.8 % FWHM	>19 cm³	2.6 lb

Documents

PDFA400 Handheld Radiation Identifier – A400 Specifications (HH-37)Datasheet · H3D

Sources

The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.

1
A400 Handheld Radiation Identifier – A400 Specifications (HH-37)
Publisher: H3DDatasheet p. 2 'Gamma-Ray Detector'; p. 2 'Energy Range'; p. 2 'Nominal Dimensions'; p. 2 'Weight' … Checked 2026-10-16
2
A Series – Handheld Radioisotope Identification Device (RIID)
Publisher: H3DProduct page a400.php model table, column 'A100' (columns A100, A100+, A200, A200+, A400, A400+), row 'Imaging Range (keV)'; a400.php model table, column 'A100' (columns A100, A100+, A200, A200+, A400, A400+), row 'Startup Time (minutes)'; a400.php model table, column 'A100' (columns A100, A100+, A200, A200+, A400, A400+), row 'Resolution (% FWHM @ 662keV)'; a400.php model table, column 'A100' (columns A100, A100+, A200, A200+, A400, A400+), row 'CZT Volume (cm3)' … Checked 2026-10-16

H3D

H Series

Gamma imaging

Detector type: CZT (CdZnTe)
Spectroscopy energy range: 50–3000 keV (H100/H400/H420/H1600)
IP rating: H100/H400/H420/H1600: IP67 (excluding external media)

9 models

H3D

GammAware 3D Radiation Imaging

3D radiation mapping

Mapping method: SLAM, simultaneous localization and mapping
Compatibility: H Series (e.g. H100/H400/H420) and M Series (e.g. M100/M400)
Visualization: Radiation hotspots overlaid on the scanned area’s 3D model

16 referenced values

H3D

T Series (T410)

Rugged integrable gamma imager

Detector type: T Series: CZT (CdZnTe)
Spectroscopy energy range: All tabulated T400S/T410 variants: 50–3000 keV
Weight: T410/T400S (including +): 8.7 lb; T410P/T410SP (including +): 10.9 lb

13 referenced values

H3D

P Series (P100)

Collimated gamma imager

Detector type: P100/P100S: CZT (CdZnTe)
Spectroscopy energy range: P100/P100S: 50–3000 keV
Weight: P100/P100S: 25 lb (approximately 11.3 kg)