RADEX OBSIDIAN User manual

Button
Button
Button
Button
OLED
screen Battery charge
status: green light
means the battery
is charging
Button
Switch
“open / closed”
for the beta lter
detector
USB-C port
to charge the battery
and connecting to PC
Gamma-beta radiation
scintillation detector
The detector consists of a CsI (Tl)
scintillator and a silicon solid-state
photomultiplier.
!
RADEX OBSIDIAN Radiation Dosimeter
Turning ON for the rst time,
using basic settings.
1. Turning ON for the rst time
To turn on, press and hold
for 2-3 seconds. A beep will
sound and clock settings will
appear on the screen.
!
00:00:00
23
22
01
02
2. Setting Time
To set the current hour,
use buttons and . To
continue, press or and
proceed setting minutes then
seconds the same way as
the hour.
01-01-2020
31
30
02
03
3. Setting the Date
To sett the current day,
use buttons and . To
continue, press or and
proceed setting the month
then the year the same way as
setting the day.
To begin -First Use
4. Settings complete
Basic Settings are done. To
continue, press and the
unit will begin measuring.
Turning ON
Press and hold for 2-3
seconds. A beep will sound
indicating that the unit is on.
When rst turned on, the device
is in the default Equivalent Dose
Rate Mode (EDR).
Shutting OFF
Press and hold for 2-3
seconds to shut o󰀨 the unit. The
screen will go blank and the unit
will be o󰀨.
If the device is in Sleep Mode
( lights up on the screen),
then press any button and the
device will exit the sleep mode,
then press and hold for 2-3
seconds. The screen will go
blank and the unit will be o󰀨.
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11:45
Turning the device ON and OFF
Intended Use
Radiation dosimeter is used to measure the radioactivity of food, building materials, antiques,
household goods, soil in household plots, vehicles, etc.

Dose rate measurement range μSv/h 0.01 -9999
Dose measuring range Sv 0 -9.99
Flux density measurement
range of beta particles cm-2*min-1 10 -999000
Range of detectable energy
gamma radiation
beta radiation MeV 0.05 -3 0,1 -3.5
Margin of error for dose rate % ± 15
Margin of error for beta-particles,
where “Р” is a measured result %± (20+1000 /Р)
Measurement time seconds 1
Connection type USB (TYPE-C), Bluetooth
Energy source Lithium polymer battery
Data saves in memory 500
Continuous operation time hours 100
Temperature range °F / °C -4 to +104 / -10 to +40
Unit Size in / mm 46 x 19 x 8 / 116 x 48 x 19
Weight oz / gr 2.8 / 80
The technical specications and/or any features of this device are
subject to change by the manufacturer without notice.
!
The on-screen images (icons) shown in this manual may di󰀨er
from the actual images on the screen.
!
How dangerous?
Di󰀨erent levels of ionizing radiation present di󰀨erent degrees of
danger or they may be just a natural background radiation (coming
mostly from soil and space). As a general rule, an increase in mea-
surement by 0.2 μSv/h above the established natural background
radiation is considered an excess or “elevated”. You should be
aware of where these readings are coming from.
What is on the screen
Notications and Alarms
audio alarm is ON battery power at 100%
vibration alarm is ON battery power at 80%
Bluetooth is ON battery power at 50%
connected to phone Bbattery power at 30%
11:45 current time battery power at 10%
connected to PC USB connected
saving to History
Modes of measuring
SEARCH Mode. The sum measurement of dose rate of
gamma radiation and the ux density of beta-particles, with
results shown as a graph.
MEASURE Mode. Separate measurement of gamma
radiation dose and ux density of beta particles.
EDR Mode in white means the detected radiation levels are
normal. The sum measurement of the dose rate of gamma
radiation and the ux density of beta particles.
EDR Mode showing in yellow indicates the detected radiation
levels as elevated and are higher then threshold Gamma 1
EDR Mode ashing in red means the detected radiation
levels are dangerous and are higher then threshold Gamma 2
DOSE Mode is ON for User 1
DOSE Mode is ON for User 2
DOSE Mode is ON for User 1 blinking in red means the Dose
Threshold for User 1 has been reached.
DOSE Mode is ON for User 2 blinking in red means the Dose
Threshold for User 2 has been reached.
Settings menu
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INCLUDED IN THE PACKAGE
• RADEX OBSIDIAN Radiation Dosimeter device
• USB-C cable
• User manual
• Warranty replacement
TECHNICAL SPECIFICATIONS
10
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Margin of Error
Descriptive estimation
Analog scale
Measurement result
Unit of measurement
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11:45
Measured results
Modes of measuring
Notications and Alarms
Measurement result is a numerical value of level of radioactivity.
Descriptive Estimation has 3 phases: “Normal Bgnd.” / «Elevated
Bgnd.” / “Dangerous Bgnd.” (Bgnd. is short for Background).
Analog Scale displays the level of radioactivity on a logarithmic scale.
Unit of measurement displays the units of measurement selected in
the Settings: μSv/h, μR/h, CPS, CPM or their multiples mSv/h, mR/h,
R/h, KCPS, KCPM.
Margin of Error - if set to “Relative” (under Settings) then the margin
error is displayed as a percent of the nominal value. If set to “Absolute”
then the margin of error is displayed in the same units as the
measurement. If set to “Do not show” then the margin of error will not
be displayed on the screen.
Measured results