Ludlum Measurements 23, Техническое руководство

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Model 23 & 23-1 Technical Manual
Section 1
Ludlum Measurements, Inc. Page 1-1 August 2017
Introduction
he Model 23 EPDi is an electronic personal dosimeter, which
measures personal dose equivalent from external radiation sources. It
is ideal for the measurement and general monitoring of gamma and X-
ray radiation in medical and laboratory environments, as well as any
controlled or restricted area where personal radiation monitoring is required or
desired.
The Model 23-1 is identical to the Model 23, except that it measures in Sv/h
instead of R/hr.
The compact and lightweight body of the instrument (55.9 g {2 oz}) makes it
ideal for personal use. It can be compared to the size of an ink pen.
This instrument is sensitive to a wide range of energies from 35 keV to 3 MeV.
Dose, dose equivalent rate, and alarm values are easily seen on the four-digit
LCD screen. Each preset alarm threshold is displayed on the screen. When the
dose or dose rate reaches the preset alarm thresholds, the alarm activates.
Users who have multiple EPDi units, there is an optional reader/software kit
that can be used to quickly take data directly from the EPDi Dosimeter via
infrared communication to the user’s PC. The optional software also allows the
user to set or change alarm set points quickly.
Since the Model 23 has energy characteristics corresponding to 1 cm dose
equivalent, by placing it close to the body it is able to measure 1 cm dose
equivalent.
Notice!
The Model 23 Dosimeter may not measure pulsed radiation
accurately. Point the “body side” (noted on the dosimeter) or
display side towards the body or area to be measured. A dot next
to the gamma symbol on the instrument indicates the center
point of the unit.
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