Ludlum Measurements 25009185, Manual

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NTRODUCTION
The Model 3001 is an ergonomic, lightweight instrument which can be used for radiation
survey purposes. The Model 3001 features the ability to measure radiation in count rate,
exposure rate/dose, activity rate, time-averaged rates, and scaler counts. It supports up to
four external radiation detectors to detect alpha, beta, or gamma radiation. Each detector
may have its own set of calibration and user parameters. The DETECTOR button is used to
select the active detector. The instrument features a large backlit LCD (liquid crystal display),
an easy, intuitive use keypad, and audio feedback. The unit body is made of lightweight but
durable plastic. It is intended for outdoor use and can resist splashing water. The foam grip
provides a comfortable, ergonomic grip but may be removed for ease of decontamination.
Three modes of operation are available for the Model 3001 – RATE, MAX, and COUNT.
RATE mode operation will display the current count, exposure, or activity rate.
MAX mode is used to capture the highest count, activity, or exposure rate detected – useful
for finding a peak rate, or frisking when the display is not visible. Two sets of units (primary
and secondary) for RATE and MAX modes can be chosen from among cps, cpm, Bq, dpm,
R/h, or Sv/h. The user can switch between these two units by simply pressing the UNITS
button.
COUNT mode allows the user to perform a count for a predetermined time. Depending on
the count units chosen, the result can be a scaler count (in counts or disintegrations), a time-
averaged rate (cpm, dpm, Bq, cps), a time-averaged exposure or dose (R/h, Sv/h), or an inte-
grated exposure or dose (R or Sv). The primary keypad includes four push buttons: ON/ACK
to toggle instrument power and adjust the click audio level, UNITS to change between avail-
able units, DETECTOR to change available external detectors, and MODE to switch between
available modes.
The standard handle includes a LOG button that allows the instrument to log up to 1000
data points when activated with the optional Lumic Datalogging Kit. The display will be
automatically back-lit if light levels are low or can be set to a user defined light level. The
display back-light can also be configured for “Continuous On” operation. RATE, MAX, and
COUNT modes can be silent or utilize a “click” audio; the “click” audio is always silent during
COUNT mode by default. A "sigma" audio mode can be enabled (disabling the "click" audio)
in RATE and MAX modes when scintillator detectors are used, and this mode makes it easy
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