Thiết bị khảo sát phóng xạ RaySafe 452

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RaySafe 452 là thiết bị khảo sát phóng xạ mạnh mẽ, cho phép đo bức xạ ion hóa trong nhiều ứng dụng khác nhau như tìm đồng vị phóng xạ bị tràn, đo tán xạ từ máy X quang và máy gia tốc tuyến tính.

Download Thông số kỹ thuật cụ thể của thiết bị (Datasheet) - Bản tiếng Anh.

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Tổng quan

General

Safety standard

Complies with IEC 61010-1:2010, pollution degree²

Radiation meter standard

Complies with IEC 60846-1:2009, except EMC which complies with IEC 61326-1:2012, and except alarm sound level

Dimensions

250 x 127 x 83 mm (9.8 x 5.0 x 3.3 inches)

Weight

0.8 kg (1.7 pounds)

Display

240 x 400 pixel color LCD, sunlight readable, backlit

Rate alarm

65 dB(A) at 30 cm (12 inches)

Operating temperature

-20 – +50 °C (-4 – +122 °F)

Storage temperature

-30 – +70 °C (-22 – +158 °F)

Battery charging temperature

+10 – +40 °C (+50 – +104 °F)

Atmospheric pressure

70 – 107 kPa, altitude up to 3000 m (10,000 ft)

IP code

IP64 (dust proof and water resistant) according to IEC 60529:1989-2013, with lid mounted, seals intact and nothing connected to USB connector

Humidity, without lid

< 90 % relative humidity, non-condensing

Battery life

Up to 100 h

Battery

Built-in rechargeable lithium-ion, 2550 mAh

Connector

USB micro (5 V DC, 1.3 A), for communication and charging

Mounting

Standard 1/4” tripod thread on handle

Data storage

4000 stored measurements and 10 days of dose rate log with 1 s resolution

Software

RaySafe View (for remote control, analysis and data export)

Thông số kỹ thuật

Radiology

Ambient dose equivalent, H*(10)

Range

0 μSv/h – 1 Sv/h (0 μrem/h – 100 rem/h)

Rate resolution

0.01 μSv/h (1 μrem/h) or 3 digits

Dose resolution

0.1 nSv (0.01 μrem) or 3 digits

Energy range

16 keV – 7 MeV

Energy response¹

> 20 µSv/h (2 mrem/h) and T < 30 °C (86 °F)	±15 %, 20 keV – 5 MeV ±25 %, < 20 keV or > 5 MeV
otherwise	±20 %, 20 keV – 1 MeV –25 % – +150 %, < 20 keV or > 1 MeV

otherwise

Minimum X-ray pulse length²

5 ms at T < 30 °C (86 °F)

Minimum linac frequency²^,3

100 Hz at T < 30 °C (86 °F)

Rate response time

˜2 s to detect a step from 0.2 to 2 μSv/h (20 to 200 μrem/h)

IEC 60846-1 energy range⁴

20 keV – 2 MeV, angle of incidence ±45°"

IEC 60846-1 dose rate range⁴

1 μSv/h – 1 Sv/h (100 μrem/h – 100 rem/h), non linearity < ±10 %

IEC 60846-1 dose range⁴

1 μSv – 24 Sv (100 μrem – 2.4 krem), coefficient of variation < 3 %

Units

Sv
rem (1 rem = 1/100 Sv)

Air kerma, K_air

Range

0 μGy/h – 1 Gy/h (0 μR/h – 114 R/h)

Rate resolution

0.01 μGy/h (1 μR/h) or 3 digits

Dose resolution

0.1 nGy (0.01 μR) or 3 digits

Energy range

30 keV – 7 MeV

Energy response¹

> 20 µGy/h (2.3 mR/h) and T < 30 °C (86 °F)	±15 %, 30 keV – 5 MeV ±25 %, 5 MeV – 7 MeV
otherwise	±30 %, 30 keV – 1 MeV –25 % – +120 %, 1 MeV – 7 MeV

otherwise

Minimum X-ray pulse length²

5 ms at T < 30 °C (86 °F)

Minimum linac frequency²^,3

100 Hz at T < 30 °C (86 °F)

Rate response time

˜2 s to detect a step from 0.2 to 2 μGh/h (23 to 230 μR/h)

Units

Gy
rad (1 rad = 1/100 Gy)
R (1 R = 1/114.1 Gy)

Mean photon energy, Ē

Range

20 keV – 600 keV

Uncertainty

10 % at < 100 keV, 20 % otherwise

Defining standard

ISO 4037-1:2019

Minimum dose rate⁵

20 μSv/h (2 mrem/h) or 20 µGy/h (2.3 mR/h), at T < 30 °C (86 °F)

Counter (α, β, γ)

Detector type

Geiger-Müller pancake

Window

Mica, 1.5 – 2 mg/cm²

Sensitive area

15.55 cm², behind 79 % open steel grid

Range

0 cps – 20 kcps (0 cpm – 1.2 Mcpm)

Rate resolution

0.1 cps (1 cpm) or 3 digits

Counter resolution

1 count or 3 digits

Dead time correction

Automatic, linearity within -10 % – +30 %

Typical background at 0.1 μSv/h

0.5 cps (30 cpm)

Typical gamma sensitivity, 137Cs

6 cps / μGy/h (3000 cpm / mR/h)

Rate response time

~2 s to detect a step from 1 to 10 cps (60 to 600 cpm)

Units

cps
cpm (1 cpm = 1/60 cps)

2π emission sensitivity

Radionuclide	Decay (E_max)	Typical efficiency
¹⁴C	β¯ (0.16 MeV)	15 %
⁶⁰Co	β¯ (0.32 MeV)	31 %
³⁶Cl	β¯ (0.71 MeV)	43 %
⁹⁰Sr / ⁹⁰Y	β¯ (0.55 / 2.28 MeV)	49 %
²³⁹Pu	α (5.16 MeV)	26 %
²⁴¹Am	α (5.49 MeV)	26 %

Footnotes

The instrument uses a Geiger-Müller pancake at low rates and a cluster of solid-state sensors at high rates. The rate where the solid-sate sensors are fully engaged gradually increase with temperature, for temperatures above 30 °C (86 °F).
Limit where the response is within ±20 % of the response at continuous radiation. Above 30 °C (86 °F) the instrument’s ability to handle low linac pulse rates and short X-ray pulses gradually declines with increasing temperature.
Refers to the microwave pulse repetition frequency of typical medical linear accelerators. Each pulse has a typical duration of a few µs.
Ranges where the instrument fulfills IEC 60846-1:2009.
Above 30 °C (86 °F) the minimum dose rate gradually increases with increasing temperature.
Measured at 3 mm distance between instrument housing (without lid) and wide area class 2 sources according to ISO 8769:2010.

Thiết bị khảo sát phóng xạ RaySafe 452

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