Rae GammaRAE II Installation guide

Using the
GammaRAE II
Personal Radiation
Detector

Training Agenda
• GammaRAE II
Features
• Normal Usage
– Turning Unit On
– Operating Mode
– User Screens
• Advanced Features
– Programming Mode

GammaRAE II Features
• Detector: CsI (TI)/Photodiode
• Sensitivity: More than 1 cps per µR/hr (>100
– cps per µSv/hr)
• Dose Equivalent: 1–4000 µR/h (0.01–40 µSv/h)
• Rate (DER) range
• for 137Cs
• Accuracy of DER: ± 30%
• for 137Cs
• Dosage Range: 1 µR - 999 µR
• Energy Range: 0.06-3.0MeV

GammaRAE II Features
• LCD display flips for 2-way viewing
• Continuous digital display of dosage rate
in µR/h or µSv/h (user programmable)
• Programmable audible, visible and/or
vibration alarms
• Highly visible LED lights on both sides of
LCD graphic display
• Loud alarm >85 dB @ 30cm for noisy
environments
• 2 operation/program buttons
• Optional Windows™-compatible
datalogging and set-up program

GammaRAE II Reliability
• Passes Drop Test from 59” (1.5m)
• Non-slip rubber housing with grippable ridges
securely fits into hand or glove
• 0 -100% humidity, water resistant, IP-65 rated
case
• Temperature range of -4oF to 122oF (-20oC to
50oC)
• 800 hours on alkaline battery (can be changed
with a coin)
• Rugged metal belt clip, wrist strap

Physical Description
Battery
Compartment
MODE
button for
selecting
mode and
function
SET button for
setting or
selecting
parameters
Buzzer alarm

Physical Description
LED alarm
LCD flips 2 ways
with SET button
to easily show
operation
parameters and
radiation
measurements
Battery
compartment
cover screw

Training Agenda
• GammaRAE II
Features
• Normal Usage
– Replacing Battery
– Turning Unit On
– Operating Mode
– User Screens
• Advanced Features
– Programming Mode

Replacing Battery
• Using either a flat-
head screwdriver or a
coin, turn screw
counterclockwise to
loosen
• Tilt cover off to
access AA batteries.
– Initial use may require
thin, flat object to
assist in removal
• Screw is captured in
battery cover
– Note: Use only
alkaline batteries;
carbon batteries may
leak causing damage.

Replacing Battery
• Insert new batteries
according to
directions on back of
GammaRAE II
• Replace cover and
turn screw clockwise
to tighten
• Unit will beep and
LEDs will flash once
indicating full battery
charge
• If alarm beeps
continuously, or
makes a “zapping”
noise, the batteries
are almost dead and
should not be used

Training Agenda
• GammaRAE II
Features
• Normal Usage
– Replacing Battery
– Turning Unit On
– Operating Mode
– User Screens
• Advanced Features
– Programming Mode

Start-up: Turning Unit On
• Press and hold the MODE button for 3
seconds
• Alarm sounds (if buzzer is set to ON)
• LCD displays unit information
– LEDs and vibrator self-test at this time
• Instrument performs self-check
– Time and battery status are displayed
• GammaRAE II performs a 36-second
background “calibration”

Start-Up Warnings
Important! If your GammaRAE II displays “Gamma sensor
not found” or “No sensor installed!” contact your distributor
or RAE Systems service at 408-752-0723. Do not attempt
to use or repair the unit. There are no user-serviceable
parts in the GammaRAE II.

Start-Up
Once calibration is complete and the unit is in Normal
Operating Mode (NORM), you will see a screen like
this.
Note: NORM does not mean “Naturally Occurring
Radioactive Material”; It indicates that the unit is in
Normal Operating Mode.

Turning Unit Off
• Press and hold the MODE button for 5
seconds
• The detector counts down 5 seconds on
the screen, flashes the orange LEDs, and
beeps, and then shuts off
• Do not release the MODE button until the
unit has counted down to zero, flashed the
red LEDs, and sounded a long beep.

Training Agenda
• GammaRAE II
Features
• Normal Usage
– Replacing battery
– Turning Unit on
– Operating Mode
– User Screens
• Advanced Features
– Programming Mode

GammaRAE II Operations
• The GammaRAE II has two modes of
operation: Normal Operating Mode
(NORM) and Programming Mode (PROG).
• In normal operating mode, the
GammaRAE II detects Gamma radiation
and accumulates radiation dosage data.
• In Programming Mode, operating
parameters are specified.

Training Agenda
• GammaRAE II
Features
• Normal Usage
– Replacing battery
– Turning Unit on
– Operating Mode
– User Screens
• Advanced Features
– Programming Mode

User Screens
•NORM-Normal Operation Mode
•CAL–Background Calibration
• PEAK – Maximum radiation level detected since last cleared
• MIN – Minimum radiation level detected since last cleared
• DOSE – Accumulated radiation dosage since last cleared
•STAT–Detector status
• TEST – Self test
– Each function remains active for 60 seconds before automatically
returning to the normal operating mode.
– Pressing the MODE button moves the selection to the next one in the
sequence.

Normal Operating Mode (NORM)
• Displays a measurement of the ambient radiation.
• Can operate in “search mode” (expressed in counts per second, cps)
or “detection mode” (µR/h or µSv/h, depending on how the detector
is set up in Programming Mode)
• Switch back and forth between search and detection modes by
pressing the SET button.
• Press the MODE button to step to the next function.