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VF HF-50 - Page 10

VF HF-50
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Introduction
10
1.
Introduction
1.1. Instrument specifications
The HF series hand-foot contamination monitors are intended to measure surface contamination by alpha,
beta and gamma emitting radionuclides on hands, feet, and clothing.
Typical usage is at nuclear power plants, radio-chemical plants, research institutes, hospitals, etc.
1.2. Abbreviations
A
Activity
A
s
Surface activity
CRM
Certified reference material
DLM
Detection limit
DTR
Decision threshold
k
1-
Coefficient of an error of the first kind (a "false positive")
k
1-β
Coefficient of an error of the second kind (a "false negative)
LV
Alarm level
N
Number of pulses
n
Count rate
PC
Personal computer
PCB
Printed circuit board
PLC
Programmable Logic Controller
PMT
Photomultiplier
q
Emission form surface
R
Response of instrument
RF
Response factor
RS-232 (485)
Serial Interface
SW
Software
USB
Universal Serial Bus
ZnS(Ag)
Zinc sulphide activated with silver (scintillation material for detecting alpha radiation)
δ
Relative basic error
Φ
Instrument efficiency

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