RaySafe 452 Radiation Survey Meter

One device. Endless possibilities. The RaySafe 452. As versatile as you are. The RaySafe 452 is a powerful survey meter that measures ionizing radiation in a wide variety of applications, including finding spilled isotopes, and measuring scattered radiation from X-ray machines and linear accelerators. Spend more time on measurements and less time on settings. Just turn on the instrument and within a few seconds you are ready to measure. The RaySafe 452 does not require any corrections or manual settings, letting you focus on radiation protection rather than set-up. The intuitive interface shows all parameters in one view. All measurement data is stored automati- cally, and the included PC software RaySafe View provides easy data transfer for further analysis and data storage. One device for every situation means less to carry, learn and administrate. That equals less expense, more efficiency and time savings. Technology The measurement technology of the RaySafe 452 is based on a combination of a silicon sensor cluster and a Geiger-Müller pancake. The instru- ment has two interchangeable lids (depending on model) to switch between air kerma, ambient dose equivalent and counts. This design makes it a versatile instrument with a wide and flat energy response along with high sensitivity and a quick response time.

Models

The RaySafe 452 comes in three different models.

                                R / Gy / rad Sv / rem cps / cpm

RaySafe 452                                                  

RaySafe 452 Air Kerma                

RaySafe 452 Ambient                   

Typical applications

• X-ray tube leakage

• X-ray wall leakage

• Scattered room radiation

• Contamination measurements

• Environmental radiation

• Non-destructive testing

Key features

• Broad application range

• Compliant with IEC 60846-1

• IP 64 (dust proof and water resistant)

• Automatic data storage

• PC software connectivity

• USB charging

• Measures alpha, beta, gamma, X-ray

• Alarm threshold setting

• Built for indoor and outdoor applications

Technical specifications

General

Safety standard Complies with IEC 61010-1:2010, pollution degree 2

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)

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

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, Kair

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

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)

i l

2π emission sensitivity6 Radionuclide Decay (Emax) Typ ca

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 %