Thermo EPD Mk2 - User Manual

EPD/HB/40521/000
ISSUE 5
EPD TECHNICAL HANDBOOK Page (iii)
ELECTRONIC PERSONAL
DOSEMETER
(EPD Mk2)
TECHNICAL HANDBOOK
DATE OF ISSUE: APRIL 2004 CHANGE REFERENCE: Thermo Electron Corp. Revision
© Thermo Electron Corporation. All rights reserved.
The information contained herein is the property of Thermo Electron Corporation and is supplied
without liability for errors or omissions. No part may be reproduced or used except as authorised
by contract or other written permission. The copyright and the forgoing restriction on reproduction
or use extend to all the media in which this information may be embodied.

Thermo EPD Mk2 Specifications

General

Brand	Thermo
Model	EPD Mk2
Category	Measuring Instruments
Language	English

Summary

SECTION 1 INTRODUCTION

SECTION 2 GETTING STARTED

2.1 Setting-up

Outlines the initial procedures for setting up the EPD for operation.

2.1.2 The EPD Battery

Details on battery types, warnings, and insertion/replacement procedures.

2.1.3 Start-up Sequence

2.1.4 EPD Confidence Test

Explains the built-in test to verify EPD functionality.

2.1.6 Wearing an EPD

SECTION 3 OPERATING INSTRUCTIONS

3.2 Audible and Visible Alarms

Details on alarm features, types, configuration, and priorities.

3.2.1 Alarm features

3.2.2 Dose Alarms

How dose alarms are checked, set, and muted.

3.2.3 Dose Rate Alarms

Explanation of dose rate alarms, hysteresis, and muting.

3.2.4 Over-Range Indication

3.2.5 Alarm Muting

3.3 Button Operation and Display Selection

How to navigate menus and select displays using the button.

3.5 Display Options and Button Functions

Detailed explanation of various EPD displays and their button controls.

3.5.1 Displaying Hp (10) Dose, Dose Rate and User ID

3.5.2 Displaying Hp(0.07) Doses, Dose Rate and ADS User ID

3.5.4 Starting;Stopping The Seconds Count Down Timer

3.5.7 EPD Confidence Test

3.5.8 Clearing Dose Displays

3.5.9 Displaying;Setting Dose Alarm Thresholds

How to view and adjust dose alarm thresholds.

3.5.10 Displaying;Setting Dose Rate Alarm On;Off Thresholds

How to view and adjust dose rate alarm thresholds.

SECTION 4 TECHNICAL DESCRIPTION

4.2 Electrical Description

Covers the EPD's electrical characteristics and battery management.

4.2.1 Electrical Characteristics

4.2.2 Battery Management

Explains how the EPD manages different battery types and their voltage.

4.3 Mechanical Description

4.4 Environmental Description

4.4.1 Environmental Characteristics

4.5 Infra-red Interface

4.5.1 Communicating With The EPD

How to communicate with the EPD for data transfer and configuration.

4.6 EPD Internal Processing & Facilities

Covers internal memory, processing, alarms, and data storage.

4.6.1 Memory Characteristics

4.6.2 Alarm Characteristics

Details the types, tones, and configuration of EPD alarms.

4.6.5 Dose and Dose Rate

4.6.7 Dose Quality Flags

4.6.8 Dose And Dose Rate Alarm Processing

4.6.9 EPD Operating Status

4.6.11 Event History Store

SECTION 5 EPD FAULTS and RECOVERY ACTIONS

5.1 Overview

5.2 Visual and Audible Fault Indication

5.3 Internal Logging of Fault Conditions

5.3.1 EPD Status Faults Record

5.3.2 Event History store

5.4 Blank LCD Display and Other Faults

Lists faults causing blank displays or no response and recommended actions.

5.5 Initialisation Error (LCD -)

5.6 Communications Error (LCD ====)

5.7 LCD Display Error Codes

5.8 Recovery Procedures

Outlines steps for logging faults and clearing errors.

5.8.1 Logging Faults; Extracting Data

Procedures for logging fault data and extracting it for analysis.

5.8.2 Clearing faults

Steps to clear faults, ranging from resets to returning the unit.

SECTION 6 MAINTENANCE

6.1 Calibration

Details the EPD calibration process and disclaimer for user modifications.

6.2 The EPD Battery

Information on battery types, replacement, and handling precautions.

6.2.1 Replacement Batteries

6.2.2 Battery Leakage

6.2.3 Lithium Thionyl Chloride Battery Warning

Critical safety warnings for LTC batteries.

6.2.4 Replacing the EPD Battery

Step-by-step guide for replacing the EPD battery.

6.3.1 Removing the EPD Lanyard Plate;Clip Assembly

6.3.2 Replacing The EPD Lanyard Plate;Clip Assembly

6.4 Cleaning

6.4.2 Radiological Cleaning

Steps for decontaminating the EPD after exposure to radioactive material.

6.4.3 Cleaning after a Battery Leakage

APPENDIX B ELECTROMAGNETIC COMPATIBILITY

Standard Test