LSJ SEED-RA Detector Radiacionis Portabilis

Capacitates Principales

Six Capabilities in One 50 g Wearable Alarm

Area monitors stay at the perimeter, and passive badges are read back hours after the shift. The LSJ SEED-RA closes both gaps: a CsI(Tl) + SiPM detector that measures X and gamma dose rate continuously and alarms the wearer in under five seconds.

LSJ SEED-RA display close-up reading 0.11 uSv/h with battery gauge, three green status LEDs and radiation trefoil

CAPACITÀ 01

Laboratory-Grade Detection Physics in a Pocket-Size Body

The SEED-RA pairs a thallium-doped caesium iodide (CsI(Tl)) scintillation crystal with a silicon photomultiplier (SiPM) — the detection chain of a laboratory counter, reduced to a body that clips onto a vest. It measures X and gamma dose rate from 0.01 μSv/h to 100 mSv/h, tracks cumulative dose to 9999 mSv, and holds relative intrinsic error within ±15% at the Cs-137 reference.

CsI(Tl) scintillator + SiPM; energy response from 30 keV to 3 MeV for X and gamma rays
Energy response error within ±20%, relative intrinsic error within ±15% at Cs-137
Dose rate 0.01 μSv/h – 100 mSv/h; cumulative dose 0.01 μSv – 9999 mSv

CAPACITÀ 02

Clip-on gravis 50 g quod evanescit in vestitu

Non plus grand que 95 × 30 × 20 mm et pesant 50 g avec la pile, l’appareil est de taille adaptée au port sur soi, pas à une utilisation en main. Son boîtier intégré ultrasonique assure une surface extérieure lisse et étanche ; la face avant affiche en temps réel la dose reçue, le symbole international des rayonnements ionisants et trois DEL vertes indiquant le bon fonctionnement, visibles même depuis l’autre bout de la pièce.

95 × 30 × 20 mm et 50 g avec pile — à fixer sur une ceinture, une bretelle de gilet ou dans une poche
Boîtier étanche IP67 : étanche à la poussière et à l’eau, sans aucune ouverture sur le corps de l’appareil
Affichage frontal avec indicateur de niveau de pile et trois DEL vertes pour une vérification immédiate du statut

Front view of the LSJ SEED-RA wearable radiation detector showing the dose-rate display and three green status LEDs

LSJ SEED-RA raising an audible and visual radiation alarm, with warning bell icon and red beacon

CAPABILITY 03

Alertes sonores, visuelles et par téléphone déclenchées par un même événement

Cum ratus dosis crescit supra normas, SEED-RA emittit alarmum auditibilem et accendit suum alarmum visuale LED. Deinde idem eventus ad telefonem mobilem portantis per Bluetooth mittitur, ut supervisor qui singulos dispositus membrorum copiae coniungit situationem supra normam videat, etiam si detector ipse sub vestitu protectivo vel in tasca latet.

Responsio ad alarmum infra 5 secundas, celeriter ut 2 secundae, secundum gradum energiae
Tres canales — auditibilis, visualis, et relatio ad telefonem mobilem — ita ut unus obstruens cursus numquam silentium adhibeat ad monitionem
Coniunctio Bluetooth omnes alarmos ad manubrium portantis reflectit, ut supervisor agere possit

CAPABILITY 04

Plus quam 100 horae in statu expectandi, per basim repleta

A low-power-consumption design keeps the SEED-RA on standby for more than 100 hours on a single charge — over four days of continuous readiness. Recharging runs through the magnetic charging contacts on the base: nothing to plug in with gloves on, and no connector for dust or water to attack. Between shifts the unit goes back on the charger and returns to full readiness.

More than 100 hours standby on one charge, from a low-power-consumption circuit
Magnetic charging contacts on the base — no open charging port on the housing
Rechargeable between shifts, so the unit starts every tour at full readiness

Bottom view of the LSJ SEED-RA showing the magnetic charging contacts

Rear view of the LSJ SEED-RA with the integrated clip for belt, vest or pocket mounting

CAPABILITY 05

Ready in Four Steps, Before You Cross the Line

Deployment is deliberately short: clip on, power on, pair by Bluetooth, work hands-free. The SEED-RA logs cumulative dose continuously from that moment, so the personal record starts when the operator enters the area rather than at the debrief.

Clip on — the integrated rear clip fixes the unit to a belt, vest strap or pocket before entry
Activare — tres LED viridis confirmant operationem normalem et display monstrat ratem dosis fundi in tempore reali
Coniungere per Bluetooth et operari sine manibus dum dosis cumulativa continue registratur

CAPABILITY 06

Quid Alarma Indossabilis Adicit ad Insigne Quod Turma Iam Portat

Comparatio quam aequipes emptionis primo postulant: insigne probat expositionem post turnum, alarma eam praevinet. Secundum principia operationis hic exposita, SEED-RA alarmat infra quinque secunda et legit dosim in tempore reali in ipso instrumento, dum dosimetrum passivum solummodo registrat et postea legitur in statione centrali.

Allarma in tempore reali cum dosis crescit: SEED-RA ita est, infra 5 secunda — dosimetrum passivum solummodo registrat
Lectio rationis dosis in tempore reali in ipso instrumento potius quam lectio post horae in statione centrali
Dosis cumulativa usque ad 9999 mSv continue registrata in instrumento per totum turnum
Allarma per Bluetooth ad telefonem mobilem relata, quod insigne passivum facere non potest

LSJ SEED-RA wearable nuclear radiation alarm detector reading 0.11 uSv/h

Instrumenta praebere turmae responsionis, fabricae, aut puncto inspiciendi?

Loqui cum fabrica de confirmatione intervali dosis, constitutione relais Bluetooth, appositione tituli OEM et suppeditatione in massa.

Applicationes

Ubi SEED-RA ad opus it

Alarum radiationis personalia ab aedificatoribus auxilii in casu emergentiae et aedificatoribus materiae periculose, aedificatoribus investigationis radiologicae, personis manutentionis in fabricis nuclearibus et officiariis examinatoribus in finibus, portubus et locis gestantur.

LSJ SEED-RA sounding its audible and visual alarm during a hazardous-material response

Auxilium in casu emergentiae et responsum ad materiam periculosem

In casu accidentis ubi substantia adhuc ignota est, aedificatores auxilii in casu emergentiae SEED-RA utuntur ad circumiacentia loci observanda, ad intensitatem et dosim cuiuslibet materiae radioactivae effusae aestimandam, et ad periculum pro hominibus et pro ambiente aestimandum antequam planum responsionis definitur. Alarma etiam ad telefonem indumenti pervenit, ita ut praepositus qui a loco distat eandem admonitionem videat.

LSJ SEED-RA carried into a suspected contaminated outdoor area during a radiological survey

Inspectio Ambientis Radiologici

Survey teams walking a suspected contaminated area carry a per-person, continuous dose record instead of perimeter-only readings, and are warned the moment the dose rate rises. Readings describe the position and moment sampled at the wearer only; they do not replace survey procedure, wipe testing or laboratory analysis.

LSJ SEED-RA clipped on for a shift inside a nuclear facility or screening point

Nuclear Plant Monitoring and Security Screening

Maintenance crews working near active systems wear immediate alarm coverage with cumulative dose logging to 9999 mSv, and supervisors receive alarms over Bluetooth relay. The same clip-on suits officers screening cargo, vehicles or venues, where it alarms the instant radiation above standard levels appears without occupying a hand.

Scenarium Operationis

Damaged Source Store: An Illustrative Deployment

The scenario below illustrates how the SEED-RA may support an entry decision. It is not a documented customer case study.

Illustrative pre-entry dose-rate check on the LSJ SEED-RA display

Example: Pre-Entry Check Outside a Damaged Source Store

Status

A workshop storing industrial radiography sources has been damaged by fire. The incident commander cannot confirm whether the sources remain shielded, and the entry decision must be made before a survey team can bring a full instrument into the yard.

Usus potencialis

A responder could clip a SEED-RA to a vest strap, power it on, and pair it with a phone before approaching; then read live dose rate from 0.01 μSv/h upward on the display and rely on the under-five-second alarm if the reading rises. Cumulative dose is logged from that moment. Readings describe only the position and atmosphere at the wearer; the unit does not locate or identify a source, and it does not replace a survey meter, a dosimetry service, or the radiological protection officer’s procedure.

SUPPORTUM DECISIONIS

Findings may inform where the cordon is placed, who may approach, and how long a task inside the area may run under the protection officer’s rules, with the logged cumulative dose supporting the post-incident record. Outcomes depend on source energy, shielding, distance, detector orientation and operator training.

Cur cum LSJ Operare

Facultas Fabricandi
Constructum Circa Necessitates Emptionis

Explore the production facilities, compliance documents, and international exhibitions presented in the materials below. Confirm product-specific certifications and current manufacturing capabilities with the supplier before placing an order.

16anni Fabricatio
experientia

4genera documentorum CE · ISO · MSDS · RoHS
ostensa in imagine suppeditata

Globalis Exhibitio commercii internationalis
sponsaliciis

Supplied collage of LSJ manufacturing, assembly, and testing areas

01 · PRODUCTIO

Capacitas ad coniungendum et experiri

The supplied company materials describe 16 years of manufacturing experience alongside assembly and testing activities. Confirm the applicable product line, current capabilities, and lead time when requesting a quote.

Supplied collage of CE, ISO, MSDS, and RoHS-related documents

02 · CERTIFICATUS

Documentation pro Diligentia Debite

Petere documenta actualia, specifica pro producto, et verificare ambitum eorum antequam utantur in concursu aut examen importationis.

Ce ISO Msds ROHS

LSJ team and visitors at international trade exhibitions

03 · GLOBALIS

Disquisitiones de Producto in Eventibus Globalibus

Explorare imagines exhibitionum industrialium et disquisitiones facie ad faciem cum sociis internationalibus et professionalibus pro responsione ad emergentias.

Cliccare super imaginem pro visu maiore · Petere visitationem fabricae aut verificatio documentorum

Petere demonstrationem operationis

Ask about clip-on mounting, the three-LED status check and Bluetooth pairing

Video de Operatione

See the LSJ SEED-RA in Operation

No SEED-RA operating video is published at the time of writing. Ask the factory for a walkthrough of one full cycle: mounting the unit on a vest, the power-on status check, pairing to a handset, and the alarm cascade across the audible, visual and phone channels.

Clip-on mounting and the three-green-LED status check
Pairing to a handset and reading the mirrored alarm
Magnetic charging contact placement between shifts

Specificationes Technicae

LSJ SEED-RA Specification Sheet

Parametros infra sunt ex fabbricantis tabula informationum pro LSJ SEED-RA excerpta. Unus numerus ante ordinandum confirmandus est: in tabula specificatorum et in textu corporis datur intervallo dosis 0.01 μSv/h usque ad 100 mSv/h, dum in summarium cartis eiusdem paginae legitur 0.01–100 μSv/h. Confirmare limitem superiorem et omnes valores configurationis-specificos ad novissimam datasheet.

Parametrum	Specificatio enuntiata
Nomen producti	Detector portabilis radiationis nuclearis (SEED-RA alarmum radiationis)
Nomen commerciale / Fabricator	LSJ — Beijing LSJ Technology Development Co., Ltd.
Positioning	Personal radiation alarm that monitors subtle radiation changes in the natural environment and warns the wearer the moment dose rises above standard levels
Detected radiation	X and γ (gamma) rays
Technologia Detectivis	CsI(Tl) scintillation crystal + SiPM
Intervallum Taxae Dosologiae	0.01 μSv/h – 100 mSv/h
Cumulative dose range	0.01 μSv – 9999 mSv
Energy response range	30 keV – 3 MeV
Energy response error	≤ ±20%
Error Intrinsicus Relativus	≤ ±15% (@Cs-137)
Tempus responsionis	< 5 s, cito ut 2 s secundum gradum energiae
Modus Alarum	Auditibilis + visualis + per telephonum mobile — sonus et indicatio LED in ipso instrumento, cum allarmo transmisso ad telephonum portantis per Bluetooth
Communicatio	Bluetooth — coniungitur cum telephono mobili portantis ad notificationem remotam
Display	Display integratum pro velocitate dosis, cum indicatore bateriae et diodis status
Standby Time	> 100 horae in una replectione
Praecipiens	Recaricabilis — designum ad consumendum parvam potestatem, cum contactibus magneticis ad recaricandum
Dimensionum totalium	≤ 95 × 30 × 20 mm
Pondus	≤ 50 g, bateriam inclusam
Gradus protectionis	IP67 — impervius pulveri et aquae
Temperatura operativa	−20 °C – 50 °C
Humiditas relativa	≤ 95% (ad 30 °C, non-condensing)
Typica Applicationes	Emergency rescue, hazardous chemical accidents, radiological environment inspection, nuclear plant monitoring, security checks and other work involving radioactive substances
Fabricator	Beijing LSJ Technology Development Co., Ltd.
Inscriptio	Sola 3 ad 17, Aedificium 5, Area 1, Via Hangfeng, Districus Fengtai, Pekinum, Sinae
Telephonum / WhatsApp	Tel & WeChat: +86 19388919457 · WhatsApp: +1 8402841651
E-mail / Situs web	[email protected] · www.lsj-te.com

Quaestiones Frequenter Rogatae

Procurement and Field Use

Answers to the questions radiation safety officers and procurement teams ask before ordering. Confirm all commercial and technical terms with the supplier.

Which radiation types does the SEED-RA detect, and with what technology?

It detects X-rays and gamma rays using a CsI(Tl) scintillation crystal coupled to a silicon photomultiplier (SiPM). Energy response spans 30 keV to 3 MeV with energy response error within ±20%, and relative intrinsic error within ±15% at the Cs-137 reference source. Detection is specified for X and gamma radiation only — no alpha, beta or neutron response is stated by the manufacturer.

What dose ranges can the SEED-RA measure?

Intervallo di dose-rate: 0.01 μSv/h–100 mSv/h; intervallo di dose cumulativa: 0.01 μSv–9999 mSv, come indicato nella tabella delle specifiche del produttore. Il limite inferiore rileva i livelli naturali di radiazione di fondo; il limite superiore copre incidenti radiologici gravi. Nota: le schede riassuntive della stessa pagina indicano «0.01–100 μSv/h»; chiedere alla fabbrica di confermare quale limite superiore si applica alla tua configurazione prima che lo strumento entri in servizio.

Quanto velocemente il SEED-RA risponde a una variazione di radiazione?

Il tempo di risposta è inferiore a 5 secondi e può essere rapido fino a 2 secondi, a seconda del livello energetico. Questa rapida risposta trasforma l’unità da dosimetro a allarme: l’utilizzatore viene avvisato mentre l’esposizione è ancora evitabile.

Come avvisa il SEED-RA l’utilizzatore?

Per tres canales: un allarme auditivu, un allarme visuali in sos LEDes de su dispositivu e un allarme in su telefunu mobile trasmissu per Bluetooth. Su portatore audet su dispositivu, bedit sos indicatores e retzet l’allarme in su telefunu appaiadu — duncas un’abitu protettivu o una tasca subra su detetore non isilat su avvisu.

Cantu tempus durat sa batieria, e comu est carrigada s’unidade?

Tempus in statu expectandi est ultra 100 horas propter conceptionem consumi parvi energiae. SEED-RA replectur per contactus magneticos replectionis in basi sua, sine portibus apertis in carcasse.

Est su SEED-RA adeguadu pro cunditziones campales aspres?

Su cuntenidore est classificadu IP67 — impenetrabile a su pulvere e a s’aqua — e s’unidade funtzionat dae −20 °C a 50 °C cun umididade relativa finas a su 95% (a 30 °C, non condensante). Custu cumprendet sos ambientis de rescata all’apertu e industriales; cunfirmare cualsiasi riquisitu additzionale comente sa resistentzia a su impattu o sa classificatzione ATEX cun su fabricante.

Chi fabricat su SEED-RA, e comu podet atzerlu?

It is manufactured by Beijing LSJ Technology Development Co., Ltd., Floors 3 to 17, Building 5, Courtyard 1, Hangfeng Road, Fengtai District, Beijing, China. Contact the factory at [email protected], or by phone and WeChat at +86 19388919457 (WhatsApp +1 8402841651), for pricing, OEM configurations and bulk supply.

Supplier Support

Subsidium a Selectione usque ad Servitium

Selectio Technica

Confirm the dose-rate upper bound you need, the radiation types present on site, and whether the alarm has to reach a supervisor’s phone as well as the wearer.

Supporto per gare d'appalto e dimostrazioni

Request the factory datasheet, calibration statement and a sample unit for evaluation, with the documents your tender or radiation protection programme requires.

Calibration and Service

Confirm calibration interval, the reference source used, spare-part and charger supply, and repair turnaround for your delivery market before the units enter service.

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DESCRIPTIO