D-tect Systems V040005 Alpha-beta probe (NSN: 6665-01-671-4479; - 3 MeV - 8 MeV)

Usage: Survey for alpha and beta radiation

Radiological:

Detector type: ZnS(Ag) scintillator adhered to thick plastic scintillator

Active detection area100 cm² (15.5 in²)

Dose rate units: Count Rate - cpm, cps. Count Rate per Unit Area - cpm/cm², cps/cm²

Detection range:

 Alpha range - 3 MeV - 8 MeV

 Beta range - 100 keV - 5 Mev

Cross talk:

 Alpha to Beta (Am-241) < 15%

 Beta to Alpha (Sr-90 Y-90) < 1%

Measurement range: 0 to 1.5 Mcpm

Gamma sensitivity: >35 cps per µGy/hr

Ambient Background: 10 µR/hr eld: Alpha < 3.0 cpm, Beta < 300 cpm

Response uniformity: ±10% from average reading

Efficiency (4π):

 Beta: 10% C-14, 18% Tc-99, 25% for Sr/Y-90, 30% for Ru/Rh-106

 Alpha: 4% Gd-148, 14% Th-230, 17% Am-241, 13% U-238, 17% Pu-239, 24% Cf-252

Operational:

Display: RDS Base Unit

Alarms: Saved in Base Unit memory, ability to set thresholds for Alpha channel & Beta channel

Electrical: 

Power: Supplied by RDS Base Unit

Mechanical

Dimension: 11.6” x 3.7” x 3.8” (29 x 9 x 10 cm)

Probe Housing: Anodized aluminum

Weight: 1.9 lb. (0.86 kg)

Protective Grate: 22 ga 0.076 cm (0.030 in.) stainless steel hex 0.64 cm (0.25 in.), 81% open

Environment

Operating Temp.: 22° to 122° F (-30° to 50° C )

Storage Temp.: -58° to 140° F (-50° to 60° C )

Relative Humidity; 3% to 100%

Ingress Protection: IP 54 - Contaminated Mylar Window should be replaced

Cleaning: Decontaminate with mild detergent and water

Salt Fog: Resistant (MIL-STD 810 G, Method 509.5)

Explosive Atmosphere: Intrinsically safe