Atec Fluke-451B - Manual

451B
Ion Chamber Survey Meter with Beta Slide
Key features
• Measures skin dose (slide open) and deep dose (slide closed)
• High sensitivity measurement of rate and dose simultaneously
• Records peak rate using “Freeze Mode”
• Auto-ranging and auto-zeroing
• RS-232 communications interface with optional Windows-based Excel add-in for
data logging
• Ergonomic, anti-fatigue handle with replaceable grip, wrist strap and tripod mount
• Programmable flashing LCD display
• Easily-accessible battery door (operated by two 9-volt alkaline batteries) on the
outside of the bottom case
• Available with dose equivalent energy response (SI units)
Technical Data
The 451B state-of-the-art ion chamber survey
meter is a handheld battery operated unit
designed for use in both rugged and normal
environments. The 451B includes a sliding beta
shield to serve as an equilibrium thickness
for photon measurements and enables beta
discrimination. The 451B auto-ranges and
measures radiation rate and accumulated dose
from various radiation sources (alpha, beta, x-ray,
gamma). The ion chamber detector allows for
a fast response time to radiation from leakage,
scatter beams, and pinholes. Additionally, the
low-noise chamber bias supply provides for fast
background-settling time.
The digital display features an analog bar
graph, 2.5 digit readout, low battery indicator,
freeze (peak hold) mode indicator, and an auto-
matic backlight function. User controls consist of
an ON/OFF button and a MODE button. The case is
constructed of lightweight, high strength materials
and is sealed against moisture.
The RS-232 interface can be connected directly
to a computer for use with the Excel add-in for
Windows (451EXL), enhancing the functionality
of the instrument. This software allows for data
retrieval, user parameter selection and provides a
virtual instrument display with audible and visual
alarm indication.