Transcript Model 1621M Trainer’s Guide

Model 1621M Trainer’s Guide
General Overview

Model 1621M is a
Geiger Meuller based Personal
Radiation Detector (PRD)
 Complies with ANSI 42.32
 Used for individual monitoring or
Exposure and Exposure Rate
 Capabable of Storing Accumulated
Exposure and Communicating with a
PC
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Applications
Emergency Workers / Responders
 Nuclear Power
 Nuclear Medicine (Radiopharmacy)
 Health Physics
 Anti-Terrorism, WMD Detection
 Event Management
 Many Others….
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Features of Model 1621M
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Dose Rate Scale (seven
segments) for quick visual
Dose Rate Indicator (in
DER Mode)
% Variation in Dose Rate
(in DER Mode)
Dose Rate Averaging Time
“Light/Set” button
“Mode” button
Speaker
LCD
IR Port
Center of Detector
Battery Compartment
Basic Power-Up
Unscrew Battery Compartment
 Insert Battery (+) Side First
 Replace Battery Cover
 Check Display for Self Test (all
Symbols lit)
 Wait 1 Minute for Self Test and
Calibration
 Maximum Sensitivity if Detector is
Facing Outward (on belt clip, etc)
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Battery Replacement (cont.)
Mode
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After Power Up, Unit will Default to
Measurement Mode
Current Dose Rate (DER)
 Absorbed Dose (DE)
 Blind Mode (Display does not indicate
radiation details)
 Communication Mode (Device is using
IR port)
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More Modes
Battery (bat) – Device needs a new
battery
 Alarm – Thresholds are exceeded
 Set Mode – Flashing indicators allow
user to set various items
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Toggle Between Modes
Continuous Monitoring

Unit Continues to Record:
Dose Rate Level (DER)
 Accumulated Dose Absorption (DE)
 Time Elapsed with Respect to DE
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EXCEPT while in Data-Transfer Mode
(using IR Port)
Memory

1621M Stores in Memory:
Dose Absorption (DE)
 Time Elapsed Relative to DE
Measurement
 Thresholds for Alarms
 History Files on Dose Rates and
Absorbed Dose
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Safety and Usability Note
If you expect High Dose Rates,
include new battery (>0.1mS/Hr)
 If going to Temperatures below 20C, Display will not function but
alarm and storage of data will
continue
 Avoid unnecessary shock, humidity,
chemical, etc to the unit.
 Ship sealed and without battery
installed

Manager Utilities
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Supervisor May:
Adjust Alarm Thresholds
 Reset Absorbed Dose and Related
Time Elapsed
 Modify Audible Settings (on / off)
 Permit or Disable Modes of Operation
(DE, DER, Blind, Communication to
PC)
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Manager Set Up
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To Modify Thresholds for Alarm,
Supervisor may use Mode and Light
Buttons
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Hold Light Button for 5 seconds
Cycle to Alarm 1 or 2 (press Light Button)
Cycle to Parameter to Change (units, values,
decimal place) using Light button
Change Values using Mode button (press to
increment value, hold for faster cycling of
value)
Hold Light Button when done
Adjust Using Lower Button
Advanced Set Up

Use IR Communication to:
Enable / Disable modes altogether
 Download History to PC
 Modify what Functionality User can
Access
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 (Such
as Disable Ability for User to Dose
Absorption and related Time)

Develop Operational Protocols for User
Group
Main User Mode 1
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Dose Rate (DER) Displays the
Following:
Measurement in Units (uR/hr, mR/hr,
R/hr)
 Simple Bar Indication (7 Segments,
logarithmic)
 Averaging Time of DER Value (in
seconds) Quick Tip: Location of Radiation Source
is quickly obtainable by using the DER
 Coefficient of
DER
Variation
(asoraarea
%
value
and sweeping
a subject
value)
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Enable Search to Screen
Cargo, Areas or Personnel
Enable Vibrate Mode for
Increased Awareness
Main User Mode 2
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Absorbed Dose of Radiation (DE)
Indicates total absorbed dose since
reset
 Accumulation Time since reset
 Reset Both Values by Holding the Light
and Mode Button at the Same Time
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 In
PC Mode, this can be disabled. Also in
PC Mode, DE values can be reset.
Absorbed Dose Set-Up
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Modify the Alarm Thresholds similar to
Dose Rate Mode Setup (DER)
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Hold Light Button to enter ‘adjust’, cycle
values with “Mode” and variables with “Light”
When Complete, Hold “Light” for 5 seconds
to exit setup
Threshold 1 is initial Alarm to indicate to
user that first threshold is exceeded
Threshold 2 is total allowable absorption
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This value is used to calculate remaining
allowable stay time
Blind Mode
Used to Monitor Status of
Instrument
 Indicates Serial Number and
Production Date
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PC Communication
Used to Set Up Instrument
 Save Stored Data
 Enable or Disable Local Access to
Funtionality
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Need:
IR Port on PC
 Software that came with unit
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