Eberline ESP-1 - Page 90

A. GENERAL DESCRIPTION
tor is alpha sensitive (above 3 MeV).
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lightweight probe without any gamma shielding.
B. SPECIFICATIONS
Operating Voltage: 900 +50 V
Plateau Length: 100 V minimum
Plateau Slope: 0.1 percent per V maximum
Dead Time: 50 us maximum
Temperature Range: — 22°F to +167°F
(-30°C to +75°С)
Mica Window Thickness: 1.4 to 2.0 mg/cm?,
Model HP-260
These hand probes provide a sensitive beta detector
featuring a “РапсаКе”” GM tube with a thin mica win-
dow. They are designed for contamination surveys on
personnel, table tops, floors and equipment. The open
window, which is protected by a sturdy wire screen, per-
mits useful beta sensitivities down to 40 keV. The detec-
The HP210-L with a lead shield and the HP-210T with a
tungsten shield permit relatively low-level beta monitor-
ing in a gamma background. The shielding ration for
“Со gamma (front: back) is 4:1. The HP-260 is a
Models HP-210 and HP-260
Hand Probes
Mica Window Size: 1.75-inch-diameter
(4.45 cm); 2.4 in? (15.5 cm?)
Gamma Sensitivity: =3600 cpm/mR/h (13309)
(into window)
*Beta Efficiency:
2:45 percent **Sr-°°Y
= 30 percent Tc
= 10 percent “С
Alpha Sensitivity: 3 MeV at window
Connector: BNC series coaxial
C. AVAILABLE ACCESSORIES
Sample Holder: SH-4A for use with HP-210
Cable: CA-16-60
Check Source: CS-7A
*Efficiencies with screen in place. Screen removal will
increase efficiency by =45 percent of stated value.
Efficiencies listed as percentage of 2π emission rate,
from a A source.
Model HP-210T/Model HP-210L
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