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05-450
User Manual
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Fluke 05-450 User Manual

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05-450
Digital Doorway Monitor

Users Manual

PN 4484936 Rev. 1, April 2014
© 2014 Fluke Corporation. All rights reserved. Specifications are subject to change without notice. All product names are trademarks of their respective companies.
Warranty and Product Support
This warranty covers only serialized products and their accessory items that bear a distinct serial number tag. Recalibration of instruments is not covered under the warranty.
This warranty gives you specific legal rights and you may also have other rights that vary in different jurisdictions. Since some jurisdictions do not allow the exclusion or limitation of an implied warranty or of incidental or consequential damages, this limitation of liability may not apply to you. If any provision of this warranty is held invalid or unenforceable by a court or other decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any other provision.
7/07
Notices
All Rights Reserved
Copyright 2014, Fluke Biomedical. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language without the written permission of Fluke Biomedical.
Copyright Release
Fluke Biomedical agrees to a limited copyright release that allows you to reproduce manuals and other printed materials for use in service training programs and other technical publications. If you would like other reproductions or distributions, submit a written request to Fluke Biomedical.
Unpacking and Inspection
Follow standard receiving practices upon receipt of the instrument. Check the shipping carton for damage. If damage is found, stop unpacking the instrument. Notify the carrier and ask for an agent to be present while the instrument is unpacked. There are no special unpacking instructions, but be careful not to damage the instrument when unpacking it. Inspect the instrument for physical damage such as bent or broken parts, dents, or scratches.
Technical Support
For application support or answers to technical questions, either email techservices@flukebiomedical.com or call 1-800­850-4608 or 1-440-248-9300. In Europe, email techsupport.emea@flukebiomedical.com or call +31-40-2675314.
Claims
Our routine method of shipment is via common carrier, FOB origin. Upon delivery, if physical damage is found, retain all packing materials in their original condition and contact the carrier immediately to file a claim. If the instrument is delivered in good physical condition but does not operate within specifications, or if there are any other problems not caused by shipping damage, please contact Fluke Biomedical or your local sales representative.
Returns and Repairs
Return Procedure
All items being returned (including all warranty-claim shipments) must be sent freight-prepaid to our factory location. When you return an instrument to Fluke Biomedical, we recommend using United Parcel Service, Federal Express, or Air Parcel Post. We also recommend that you insure your shipment for its actual replacement cost. Fluke Biomedical will not be responsible for lost shipments or instruments that are received in damaged condition due to improper packaging or handling.
Use the original carton and packaging material for shipment. If they are not available, we recommend the following guide for repackaging:
Use a double–walled carton of sufficient strength for the weight being shipped.  Use heavy paper or cardboard to protect all instrument surfaces. Use nonabrasive material around all
projecting parts.
Use at least four inches of tightly packed, industry-approved, shock-absorbent material around the
Returns for partial refund/credit:
Every product returned for refund/credit must be accompanied by a Return Material Authorization (RMA) number, obtained from our Order Entry Group at 1-440-498-2560.
Repair and calibration:
To find the nearest service center, go to www.flukebiomedical.com/service or
In the U.S.A.: Cleveland Calibration Lab Tel: 1-800-850-4608 x2564 Email: globalcal@flukebiomedical.com
Everett Calibration Lab Tel: 1-888-99 FLUKE (1-888-993-5853) Email: service.status@fluke.com
In Europe, Middle East, and Africa: Eindhoven Calibration Lab Tel: +31-40-2675300 Email: ServiceDesk@fluke.com
In Asia: Everett Calibration Lab Tel: +425-446-6945 Email: service.international@fluke.com
instrument.
To ensure the accuracy of the Product is maintained at a high level, Fluke Biomedical recommends the product be calibrated at least once every 12 months. Calibration must be done by qualified personnel. Contact your local Fluke Biomedical representative for calibration.
Certification
This instrument was thoroughly tested and inspected. It was found to meet Fluke Biomedical’s manufacturing specifications when it was shipped from the factory. Calibration measurements are traceable to the National Institute of Standards and Technology (NIST). Devices for which there are no NIST calibration standards are measured against in­house performance standards using accepted test procedures.
WARNING
Unauthorized user modifications or application beyond the published specifications may result in electrical shock hazards or improper operation. Fluke Biomedical will not be responsible for any injuries sustained due to unauthorized equipment modifications.
Restrictions and Liabilities
Information in this document is subject to change and does not represent a commitment by Fluke Biomedical. Changes made to the information in this document will be incorporated in new editions of the publication. No responsibility is assumed by Fluke Biomedical for the use or reliability of software or equipment that is not supplied by Fluke Biomedical, or by its affiliated dealers.
Manufacturing Location
The 05-450 is manufactured for Fluke Biomedical, 6920 Seaway Blvd., Everett, WA, U.S.A.

Table of Contents

Title Page
Introduction ............................................................................................ 1
Safety Information ................................................................................. 3
Symbols ................................................................................................. 4
General Specifications ....................................................................... 5
Driver Option Specification ........................................................ ........... 6
Getting Started ...................................................................................... 7
Power Up ........................................................................................... 7
Radiation Units .................................................................................. 8
Checking Parameters ........................................................................ 8
Setting Alarm-Points .......................................................................... 9
Operational Check (Optional) ............................................................ 9
Operator Controls and Setup ................................................................ 10
Calibration Controls ........................................................................... 10
Dipswitch (under calibration cover) ................................................... 11
RS-232 Output ................................................................................... 12
9-Pin Data Connector ........................................................................ 13
Detector Setups ................................................................................. 13
Common Options and Modifications...................................................... 14
Time and Date Stamp Option ............................................................ 14
Description ..................................................................................... 14
Setup ............................................................................................. 14
Date and Time ............................................................................... 14
RS232 Data Format ....................................................................... 14
Modifications to the Product for Optimum Performance .................... 14
Calibration ............................................................................................. 15
High Voltage ...................................................................................... 15
Calibration Parameters ...................................................................... 15
Analog Output .................................................................................... 16
Discriminator ...................................................................................... 16
Battery Charge .................................................................................. 16
Receiving and Installation ..................................................................... 17
Unpacking .......................................................................................... 17
Installation ......................................................................................... 17
Location ......................................................................................... 17
Detectors ....................................................................................... 17
Instrument (Counter) ..................................................................... 17
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Users Manual
Cables ........................................................................................... 17
Optional Remote Alarms ............................................................... 18
Maintenance .......................................................................................... 18
Cleaning Instructions and Precautions .............................................. 18
Replacement of Mains Fuse .............................................................. 18
Detector Connector ........................................................................... 18
Recycling ........................................................................................... 19
Drawings ............................................................................................... 20
ii

List of Figures

Figure Title Page
1. Front Panel ................................................................................................ 2
2. Left Side-Panel .......................................................................................... 7
3. Alarm Point Notice ..................................................................................... 8
4. Typical Installation 385x442 ...................................................................... 20
5. Detector Enclosure 385x106 ..................................................................... 21
6. Detector Mounting 385x120 ...................................................................... 22
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Users Manual
iv

Introduction

Model 05-450 and 05-450-2200 Digital Doorway Monitor (the Product) is designed to monitor for nuclear radiation. Featuring a wall-mount chassis, the Product has a four-digit LED display that is readable from 9 m (30 ft) away. Backlit indicators warn of low radiation alarm (yellow), high radiation alarm (red), instrument failure (red) and low battery (yellow). A green status light is a positive indication of instrument operation.
Parameters are protected under a calibration cover. Calibration is easily
accomplished by moving the CAL dipswitch to the right, and using the
pushbuttons to increment or decrement the calibration constant, dead time correction, and alarm point parameters. Parameters are stored in non-volatile memory (retained even with power disconnected).
A five-decade logarithmic analog output is provided. A battery backup provides 48 hours of additional use after the primary power is removed.
Note
The detector does not contain any consumable materials.
Note
If the detector is used in a manner not intended by the manufacturer, the detector may not function properly.
The Product has two scintillation detectors, each with internal lead shield to reduce background radiation. Detectors may be supplied with or without environmental enclosures. The scintillation detectors detect low levels of waste radiation. These detectors are usually, but not always, used in scrap yards or hospitals. Lead shields around the crystal allows specific coverage areas for radiation detection. Figure shows the Product.
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Users Manual
Figure 1. Front Panel
huk01.eps
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Digital Doorway Monitor
Safety Information

Safety Information

A Warning identifies conditions and procedures that are dangerous to the user. A Caution identifies conditions and procedures that can cause damage to the
Product or the equipment under test.
Warning
To prevent possible electrical shock, fire, or personal injury:
• Read all safety information before you use the Product.
• Carefully read all instructions.
• Do not use the Product around explosive gas, vapor, or in
damp or wet environments.
• Use the Product only as specified, or the protection supplied by the Product can be compromised.
• Use this Product indoors only.
• Use only the mains power cord and connector approved for
the voltage and plug configuration in your country and rated for the Product.
• Replace the mains power cord if the insulation is damaged or if the insulation shows signs of wear.
• Make sure the ground conductor in the mains power cord is connected to a protective earth ground. Disruption of the protective earth could put voltage on the chassis that could cause death.
• Do not put the Product where access to the mains power cord is blocked.
• Do not operate the Product with covers removed or the case open. Hazardous voltage exposure is possible.
• Batteries contain hazardous chemicals that can cause burns or explode. If exposure to chemicals occurs, clean with water and get medical aid.
• Have an approved technician repair the Product.
• Use only specified replacement parts.
• Do not use the Product if it is damaged.
• Disable the Product if it is damaged.
• Use only specified replacement fuses.
• For continued protection against the risk of fire, replace
only with fuse of the specified type and current rating.
• The operator or responsible body is cautioned that the protection provided by the equipment may be impaired if the equipment is used in a manner not specified by Fluke Biomedical.
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Users Manual
• Only certified technician or calibration personnel should replace battery.
• Do not touch the circuit board in the calibration window due to potential for electric shock.
• Do not touch the center pin of the detector connector unless the unit has been turned off and power has been removed or at least 1 minute.
• To prevent contact with internal hazardous live parts that are accessible using a tool: turn off the Product and disconnect the power cord. Allow the Product to sit for 1 minute before accessing internal components.

Symbols

Table 1 shows the symbols used in this manual or on the Product.
Table 1. Symbols
Symbol Description
Risk of Danger. Important information. See Manual.
Hazardous voltage. Risk of electric shock.
AC (Alternating Current)
Protective conductor terminal
This product complies with the WEEE Directive (2002/96/EC) marking requirements. The affixed label indicates that you must not discard this electrical/electronic product in domestic household waste. Product
Category: With reference to the equipment types in the WEEE Directive Annex I, this product is classed as category 9 "Monitoring and Control Instrumentation" product. Do not dispose of this product as unsorted municipal waste. Go to Fluke’s website for recycling information.
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Digital Doorway Monitor
General Specifications

General Specifications

Detectors .................................................................. Two 7.6 cm x 2.5 cm (3 in x 1 in) thick, shielded NaI (T1) scintillation
Display ...................................................................... 4-digit LED display with 2 cm (0.8 in.) character height
Display Range .......................................................... 000.0 to 9999
Display Units ............................................................ Can be made to display in: µR/hr, mR/hr, R/hr, µSv/h, mSv/h, Sv/h,
Linearity .................................................................... Readings within 10 % of true value with detector connected
Operating Range ...................................................... Depends on the type of detectors used and the units of measure
Response .................................................................. Typically 3 seconds from 10 % to 90 % of final reading
Status (green light) .................................................. Indicates the instrument is functioning properly
Low Alarm ................................................................. Indicated by a yellow light and slow beep (1 per second) audible tone
High Alarm ................................................................ Indicated by a red light and a fast beep (4 per second) audible tone
Audible indicators can be configured as a single beep if desired. Audio intensity is controlled by rotating the baffle on the audio device.
DET Fail ..................................................................... Indicated by a red light and an audible tone greater than 68 dB at 2 ft
Low Battery .............................................................. Indicated by a yellow light, beginning when 2 hours of battery life
Connector ................................................................. Dependent upon the system
Calibration Controls ................................................ Accessible from the front of instrument (protective cover provided)
High Voltage ............................................................. Adjustable from 600 volts to 1200 volts
Dead time .................................................................. Adjustable to compensate for dead time of the detector and
Overload ................................................................... A display reading of -OL- and audible FAIL alarm indicate detector
Over-range ................................................................ A display reading of ˝----˝ and activated low and high alarms indicate
Data Output .............................................................. A 9-pin connector with female sockets provides 5-decade log output,
RS-232 Output .......................................................... A 2 second dump for computer data logging
Remote (optional) .................................................... Model 05-446 Remote unit
Power ........................................................................ 95 Vac to 135 Vac (178 Vac to 240 Vac available) 50 Hz to 60 Hz
Battery Life ............................................................... Typically 48 hours in non-alarm condition; 12 hours in alarm
Battery Charger ........................................................ Battery is continuously trickle charged when the instrument is
Instrument Construction ......................................... Aluminum housing with ivory powder-coat finish
detectors with up to 200 ft cables (NEMA 4x enclosures included.)
µrem/hr, mrem/hr, rem/hr, cpm, cps, and others
(can be set at any point from 0.0 to 9999)
(can be set at any point from 0.0 to 9999)
Note
for conditions of detector overload, no count from detector or instrument failure
remain
electronics (can be read on the display)
saturation. It is normally set to initiate just above the highest range of the detector.
that the radiation field being measured has exceeded the counting range of the instrument (or when dead time correction accounts for more than 75 % of the displayed reading).
RS-232 output, signal ground connection, FAIL and HIGH ALARM signals (current sink), and direct connection to battery and ground
single phase (less than 100 mA typical, 1 amp max), 6 Volt sealed lead acid rechargeable backup battery (Built-in)
condition
connected to line power and turned on
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Temperature range .................................................. -20 °C to 50 °C (-4 °F to 122 °F). May be certified for operation from
Maximum relative humidity .................................... Less than 95% (non-condensing)
Size
Electronics (H x W x D) .......................................... 24.6 cm x 18.7 cm x 6.4 cm (9.7 in x 7.4 in x 2.5 in)
Detectors (H x W x D) ............................................ 33 cm x 43.2 cm x 21.6 cm (13 in x 17 in x 13 in)
Weight
Electronics ............................................................. 2.36 kg (5.2 lb)
Detectors ............................................................... 14.5 kg (32 lb)
Indoor use only
Maximum altitude ..................................................... 5000 m (120 V nominal), 2000m (220 V nominal)
Safety ........................................................................ IEC 61010-1, Overvoltage category II, Pollution degree 2.
Electromagnetic Compatibility (EMC) .................... IEC 61326-1 (Basic EM environment); CISPR 11, Group 1, Class A
USA (FCC) ................................................................ 47 CFR 15 subpart B, this product is considered an exempt device
Korea (KCC) ............................................................. Class A Equipment (Industrial Broadcasting & Communication
-40 °C to 65 °C (-40 °F to 150 °F)
Group 1 equipment: group 1 has intentionally generated and/or use conductively coupled radio-frequency energy which is necessary for the internal functioning of the equipment itself.
Class A equipment is equipment suitable for use in all establishments other than domestic and those directly connected to a low voltage power supply network which supplies buildings used for domestic purposes. Caution - There may be potential difficulties in ensuring electromagnetic compatibility in other environments, due to conducted and radiated disturbances.
per clause 15.103
Equipment)
This product meets requirements for industrial (Class A) electromagnetic wave equipment and the seller or user should take notice of it. This equipment is intended for use in business environments and not to be used in homes.

Driver Option Specification

Power Required ........................................................ 7.5 V dc at 100 mA; minimum V
Terminating Resistor ............................................... 250 Ω
Recorder Output Connections (9-pin D-sub connector)
Pin 5 is SIG, current output (was voltage output)
Pin 6 is LGND, Isolated Loop Return or Loop Ground
Board Header Pinout
P1-1) .................................................................. Loop GND (Isolated)
P1-2) .................................................................. 4 mA to 20 mA current output (Isolated)
P2-1) .................................................................. +7.5 V dc , RAWDC from main circuit board (LMI PN: 5396-160)
(May range from +5.5 V dc to 15 V dc)
P2-2) .................................................................. GND
P2-3) .................................................................. RCDR voltage in or analog input (0 V dc -1.25 V dc)
= 5.5 V and maximum Vin= 15 V
in
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Digital Doorway Monitor
Getting Started

Getting Started

The Product is designed for ease of use. This section of the manual is designed to help the first-time user get started. Initial power-up and basic features of the instrument are contained in this section. Other sections of the manual provide more detailed information

Power Up

Plug the power cord into a suitable wall (Mains) outlet.
Note
The Product will normally be wired internally for 120 V ac. If requested, the Product may be wired for 220 V ac Check the label next to the ac input receptacle to verify the required input voltage.
If the RS-232 feature is used, plug in a suitably wired 9-pin connector cable. See
the section 9-Pin Data Connector. for pin assignment. Turn power ON with the
left side panel switch. Do not turn power OFF unless the unit is to be removed from service.
Figure shows the left side-panel.
Use only with a 250V fuse
LINE FUSE: 2 EACH LITTEL FUSE F1A, L250V
Figure 2. Left Side-Panel
INPUT:120 VAC 50/60 HZ 250W
Read and then remove the sticker (see Figure ) from the instrument calibration cover. Checking and setting of the alarm point(s) is discussed in detail below and
in the sections Setting Alarm-Points and Calibration Controls in this manual.
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05-450
Users Manual
Please set the alarm point(s) on this insturment to conform to your requirements. The factory-set alarm points may be incorrect for your use.
Refer to the instrument manual for more information on setting alarm points.
FAILURE TO RESET THE ALARM POINT(S) MAY RESULT IN EXCESSIVE ALARMS OR LACK OF SENSITIVITY.
Initial power-up will momentarily activate the internal front-panel lights, sound the audio, and display "8888" on the 4-digit LED display. The firmware version number (39665Nyy) is then displayed as "396" and "65yy" (where yy represents the current version number).
When the instrument has finished measuring background, it will display the current radiation reading and begin checking for an alarm condition.

Radiation Units

The Product may be calibrated for almost any desired radiation units of measure. Common units of measure include mR/hr, µR/hr, R/hr, mSv/h, µSv/h, cps, cpm, and kcpm. In each case, the unit of measure is indicated underneath the four­digit display. Throughout the rest of this manual, the notation <units> will be used as a substitute.

Checking Parameters

Check the low alarm point setting by pressing the LOW ALARM button. The low
alarm point will be displayed as long as the button is pressed. The low alarm point is in units of <units>. The low alarm point can be set from 0.1 <units> to 9999 <units>.
Check the high alarm point setting by pressing the HIGH ALARM button. The
high alarm point will be displayed as long as the button is pressed. The highalarm point is in units of <units>. The high alarm point can be set from 0.1 <units> to 9999 <units>.
Figure 3. Alarm Point Notice
huk02.eps
8
Check the calibration constant by pressing the CAL CONST button. The
calibration constant will be displayed as long as the button is pressed. The calibration constant is in units of cpm (counts per minute) per <units>*. The calibration constant can be set from 0.1 cpm/<units> to 9999 cpm/<units>.
Check the detector dead time correction by pressing down on the DEAD TIME
button. The dead time correction will be displayed as long as the button is pressed. The dead time correction is in units of microseconds*. The dead time correction can be set from 0.1 microseconds to 9999 microseconds.
Digital Doorway Monitor
Getting Started

Setting Alarm-Points

The LOW ALARM and HIGH ALARM points can only be changed while the
instrument is in calibration mode. Switch the top dipswitch CAL MODE (behind
the calibration cover) to the right to place the instrument into calibration mode.
Changing alarm points is done by holding down the corresponding parameter key and pressing the up or down arrow buttons. Alarm points can be set in the range of 0.1 to 9999. When an alarm point is changed, the instrument will sound an audible beep to confirm the saving of the parameter, and will then return to displaying the current radiation level.
Note
Once the alarm point(s) is set, it is important to remember to switch the CAL MODE switch back to the left. This action protects the parameters from inadvertent changes.

Operational Check (Optional)

The operational check is an important assurance that the radiation detector and electronics are working correctly.
Note
The manufacturer of this instrument suggests that an operational check be performed on a regular basis. Local procedures may supersede this suggestion.
For an operational check, use a radiation check source (not included, but available). When not being used, store the check source in a secure area.
Note
Most check sources present very minimal risks and are therefore unlicensed (Exempt Quantity Sources reference: 10 CFR 30.71 Schedule B). The radioactive element is sealed (permanently bonded or fixed inside a capsule) so you need not wash your hands after handling. Radiation exposure while handling this source is very minimal with no identified long or short term risks. Although the amount of radiation given off by exempt sources is so low that it presents no significant hazard, they should be handled with care and respect. Time, distance, and shielding are the best ways to control exposure.
1. Taking the source in hand, place it so that it is located on or near the center (same location each time) of the detector. Hold it there for approximately 5 seconds or until the reading stabilizes. Take note of the displayed level of radiation.
2. Verify that the reading is within 20 % of the last reading obtained. Remove the source from the detector.
3. If an alarm is activated, ensure that all visual and audible devices (if applicable) work correctly.
4. Repeat the procedure for the other detector(s) if it was not triggered by the first test.
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Users Manual

Operator Controls and Setup

Calibration Controls

Remove the calibration cover to expose the calibration controls. The calibration controls include the up/down buttons, five calibration potentiometers, and the option dipswitch (detailed in the following subsection). The five potentiometers are detailed below:
Warning
To prevent possible electrical shock, fire, or personal injury:
• To prevent contact with internal hazardous live parts that
are accessible using a tool: turn off the Product and disconnect the power cord. Allow the Product to sit for 1 minute before accessing internal components.
• Do not touch the circuit board in the calibration window
due to potential for electric shock.
• ANALOG: Used to adjust the logarithmic analog voltage output. Adjusted in
calibration mode to the full-scale voltage reading or adjusted to a known point at some given reading.
• HV: Used to set the high voltage required for detector operation. Adjustable
from 0 V dc to 2500 V dc. The high voltage required will depend on the type of detector used. Internal GM detectors typically require 550 V dc. Be sure to check the high voltage with a high impedance (1000-Mohm impedance) voltmeter only. A high-voltage checkpoint is located next to the HV potentiometer.
• DISC: Internal discriminator used to set negative pulse threshold for counting
pulses from the detector. Pad allows direct measurement of threshold voltage. Utilize a Ludlum Model 500 Pulser or equivalent to inject pulses of the desired threshold size. The pulse height threshold is adjustable from
2.0 mV dc to 100 mV dc.
• BAT CHARGE: Used to set the backup battery trickle charging voltage. It is
set to 6.9 V dc while the battery is disconnected.
• OVERLOAD: Used to set the detector current overload point. When
excessive radiation causes the detector to overload, this set point will cause
the FAIL light to engage, and the display will be forced to -OL-.
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Digital Doorway Monitor
Operator Controls and Setup

Dipswitch (under calibration cover)

When the calibration cover is removed, a four-pole dipswitch is accessible that
can activate or deactivate options. These four options are: CAL MODE, LATCH ALARM, RANGE, and SINGLE BEEP.
• Dipswitch 1: Switching the top CAL MODE switch to the right places the
instrument into calibration mode. Parameters can only be changed while the instrument is in calibration mode. Calibration mode also changes the analog
output to full-scale so that the full-scale voltage may be set by the ANALOG
potentiometer. Calibration mode also slows the response time of the display and increases the accuracy. If the display seems too erratic, leaving this
switch in the calibration mode during operation will help. Moving the CAL MODE switch back to the left locks the parameters and disables any further
changes.
• Dipswitch 2: The second switch, LATCH ALARM, changes the high alarm to
a latching alarm. This switch does not affect the low alarm, which is always non-latching. When switched to the left, the high alarm is non-latching; the alarm automatically turns off when the radiation level drops below the alarm point. When switched to the right, the high alarm light and audio signals are
latched until either the LOW ALARM or HIGH ALARM button is pressed.
• Dipswitch 3: The third switch, RANGE, selects the range of the instrument.
To select the 0.1 <units> -999.9 <units> range, switch the
RANGE switch to
the left. To select the 1 <units> -9999 <units> range, switch the RANGE
switch to the right.
• Dipswitch 4: Switching the fourth switch to the right places the instrument into SINGLE-BEEP mode. This option limits the audio output to a single half-
second beep on LOW ALARM and HIGH ALARM. DET FAIL audio output (steady tone) is not limited.
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Users Manual

RS-232 Output

With the CAL MODE dipswitch in the left position, the Product dumps RS-232
data onto pin 4 of the 9-pin connector every 2 seconds.
An example program which shows how an IBM compatible PC can be used to collect the data follows:
‘Demonstration Program ‘Model 05-450 communication program written for QuickBasic ‘This program causes the computer screen to display the data being dumped
from the Model 05-450. ‘Needs the following cable: ‘ Model 05-450 PC (9-pin) PC (25-pin) ‘ pin 4 TXD pin 2 pin 3 ‘ pin 2 GND pin 5 pin 7 ‘Cable connector has male pins on Model 05-450 side ‘Cable connector has female pins on PC side ‘open up communications with serial port #1 ‘at 2400 bps (baud), no parity, 8 data bits, 1 stop bit ‘no handshaking, buffer size of 8k OPEN “COM1: 2400,n,8,1,bin,CS0,DS0,CD0,RB0” FOR INPUT AS #1
‘open up filename• for output CLS ‘clear the screen LOCATE 1 PRINT ‘Press Esc key to stop reading data. COM(1) ON ‘enable coml trapping ON COM(1) GOSUB Getcomport ‘if something comes in coml, then get it WHILE (1) ‘loop until Esc key is hit
comment•= INKEY• IF comment• = CHR• (27) THEN GOTO endloop
WEND endloop: COM (1) OFF CLOSE#1 ‘CLOSE COM port. END Getcomport: WHILE LOC(1) <>0
ComportInput•=INPUT•(1,#1) ‘bring in data from serial port PRINT ComPortInput•; ‘pint data to screen
WEND RETURN
The RS-232 data includes the current radiation readings and the current condition of the status lights. The data is presented in the following format:
BYTE1 0 x BYTE2 x x BYTE3 x OR x BYTE4 x x BYTE5 . . BYTE6 x 0 BYTE7 Audio Status =1=on BYTE8 High Alarm Status =1=on BYTE9 Low Alarm Status =1=on BYTE10 Over Range Status =1=on BYTE11 Monitor Status =1=on BYTE12 Error Code BYTE13 Carriage Return (ODH) BYTE14 Line Feed (0AH)
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Digital Doorway Monitor
Operator Controls and Setup

9-Pin Data Connector

The 9-pin connector provides output signals from the instrument and input voltage to the instrument. The pin assignments are:
pin1- +BATTERY
pin2- GND IN
pin3- FAIL_L
pin4- RS232 DUMP
pin5- ANALOG OUT
pin6- NA
pin7- HIGH ALARM_L
pin8- EXT RESET_L
pin9- +5VDC OUT
The FAIL and HIGH ALARM digital signal outputs are open drain 2N7002 outputs, able to sink about 50 mA each.

Detector Setups

Typical response and set points for the Product with NaI(TI) Scintillation Detectors are as follows:
• Operating Voltage: 600 V dc to 1200 V dc determined by comparing plateaus
• Threshold: 10 mV dc (using a 39-inch cable)
• Calibration Constant: 2400 cpm/μR/hr
• Dead Time Correction: 5 µsec
• Linear Range with DTC: 10 µR/hr to 1500 µR/hr
Typical Checkpoints:
100 µR/hr
150 µR/hr - calibration constant set point
200 µR/hr
500 µR/hr
1000 µR/hr - dead time correction set point
1500 µR/hr
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Users Manual

Common Options and Modifications

Time and Date Stamp Option

Description

When an alarm or failure occurs, the Product will print the current reading, date, time, and either ALARM or FAIL to the RS-232 port. The instrument will print once every 30 seconds as long as the alarm or fail condition is present.

Setup

You will need the following: the Product, a 1220 40-column printer, and a cable (LMI PN: 8303-674)
The printer should be configured at 2400 bps (baud), no parity, 8 data bits, 1 stop bit, and no handshaking. See printer manual for proper setup instructions.

Date and Time

Check the month and day (MMDD) by pressing the LOW ALARM and HIGH ALARM buttons simultaneously. The month and day will be displayed as
long as those buttons are pressed. The month and day can be set from 0101 to
1231.
Check the year (YYYY) by pressing the LOW ALARM and CAL CONST buttons
simultaneously. The year will be displayed as long as those buttons are pressed. The year can be adjusted from 0000 to 9999.
Check the hours and minutes (HHMM) by pressing the LOW ALARM and DEAD TIME buttons simultaneously. The hours and minutes will be displayed as
long as those buttons are pressed. The hours and minutes can be adjusted from 0000 to 2359.

RS232 Data Format

The data will be sent to the RS-232 port as:
Byte 1 0 x Byte 18 Space (20H) Byte 2 x x Byte 19 H Byte 3 x OR x Byte 20 H Byte 4 x x Byte 21 : Byte 5 . . Byte 22 M Byte 6 x 0 Byte 23 M Byte 7 Space (20H) Byte 24 : Byte 8 Space (20H) Byte 25 S Byte 9 Space (20H) Byte 26 S Byte 10 M Byte 27 Space (20H) Byte 11 M Byte 28 A Space Byte 12 / Byte 29 L F Byte 13 D Byte 30 A OR A Byte 14 D Byte 31 R I Byte 15 / Byte 32 M L Byte 16 Y Byte 33 Carriage Return (0DH) Byte 17 Y Byte 34 Line Feed (0AH)
Example output:
0642.1 04/21/95 16:56:24 ALARM
0000.0 04/21/95 08:32:16 FAIL
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Modifications to the Product for Optimum Performance

The Product main board (LMI PN: 5396-160) has these modifications:
• U531 changes from an LM358 to an OPA2343UA; LMI PN: 06-6582
• C531 changes from 10 μF tantalum to 0.047μF “poly film” (Polypropylene
sulfide), LMI PN: 04-5729.
• R432 changes from 100 k to 1 mg, LMI PN: 12-7844
Digital Doorway Monitor
Calibration

Calibration

High Voltage

The high voltage is adjustable from 600 V dc to 1200 V dc using the HV
potentiometer located under the calibration cover. Ensure that the high voltage is checked only with a high impedance (≥1000 megohm) voltmeter only. A high-
voltage checkpoint is located next to the HV potentiometer. The high voltage
required will depend on the type of detectors used. Normally, each detector in a two detector system is separately plateaued and documented. The two plateau sheets are then compared and an operating voltage is selected that is compatible to both detectors.
Warning
To prevent possible electrical shock, fire, or personal injury do not touch the circuit board in the calibration window due to potential for electric shock.

Calibration Parameters

The calibration parameters, LOW ALARM, HIGH ALARM, CAL CONST, and DEAD TIME can only be changed while in calibration mode. Switch the top
dipswitch CAL MODE to the right to switch into calibration mode. Changing any
parameter is done by holding down the parameter key and pressing the up or down arrow buttons. Any parameter can be set in the range of 0.1 to 9999. If a parameter is changed, the instrument will beep to confirm the saving of the parameter, and then return to displaying the current radiation level.
The calibration constant (CAL CONST) is set when the detector is exposed to a "low" radiation field. A "low" radiation field in this case is defined as a field where dead time losses do not exceed 5 %. The calibration constant is usually given for a certain detector. Once the calibration constant is set and checked at a low radiation field, the dead time correction can be set.
The dead time correction (DEAD TIME) is set when the detectors are exposed to a "high" radiation field. A "high" radiation field in this case is defined as a field where dead time losses exceed 30 %. The dead time correction will elevate the ratemeter reading to account for counts arriving at the detector during the detector's dead time. Scintillation detectors generally have short dead times from 1 microsecond to 10 microseconds.
Note
Once parameters are set, it is important to remember to switch the CAL MODE switch back to the left. This action protects the parameters from inadvertent changes.
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Users Manual

Analog Output

The analog output is a five-decade logarithmic voltage-out. The maximum voltage-out while under primary power is 6 volts. The maximum voltage out while under battery backup power is 4.5 volts. The five decades are:
• 0.1<units> to 1.0 <units>*
• 1 <units> to 10 <units>*
• 10 <units> to 100 <units>*
• 100 <units> to 1000 <units>*
• 1000 <units> to 10000 <units>*
When the CAL MODE dip switch is switched to the right, the analog output goes
to full scale. The analog output goes to full scale during a DET FAIL condition.

Discriminator

The DISC potentiometer located under the calibration cover is used to set the
threshold for pulses coming from the detector. The desired pulse threshold depends on the type of detector used. It is adjustable from 2.0 mV dc to 100 mV dc.

Battery Charge

The potentiometer labeled BAT, located under the calibration cover, is used to
set the backup battery trickle-charge voltage. This is typically set to 6.9 V dc with the battery disconnected.
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Digital Doorway Monitor
Receiving and Installation

Receiving and Installation

Unpacking

Remove the calibration certificate and place it in a secure location. Remove the instrument and accessories (cables, detectors, and other parts) and ensure that all of the items listed on the packing list are in the carton. Check individual item serial numbers and ensure calibration certificates match. The Product serial number is located on the lower left corner of the front panel. Most detectors have a label on the base or body of the detector for model and serial number identification.
Note
If multiple shipments are received, ensure that the detectors and instruments are not interchanged. Each instrument is calibrated to specific detectors, and is therefore not interchangeable.

Installation

The following is intended to be a general guide for installing the Product. Exact installation details depend on the customer’s specific location and use.

Location

The placement of the detector will depend on the relative importance of the following factors:
• Exclusiveness – finding a point that all waste goes through
• Proximity – closer to the waste means more sensitivity
• Shielding - smaller containers mean less shielding around possible sources
of radiation.
• Accountability – finding out where the waste is coming from

Detectors

Place detectors as close as is practical to the load. Elevate the detectors to the typical center of the load.

Instrument (Counter)

Connect the instrument to Mains power. The Product is designed for indoor use only and must be protected from adverse weather conditions.
The Product will normally be wired internally for 120 V ac. If requested, the unit may be wired for 220 V ac. Check the label next to the ac input receptacle to verify the required input voltage.

Cables

Route cables from the detectors to the instrument. Protect the cables from physical abuse. Plastic or metal conduit may be used to protect the cables.
To prevent possible electrical shock, fire, or personal injury, do not touch the center pin of the detector connectors unless the unit has turned off and the power has been removed for at least 1 minute.
Note
Warning
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Users Manual
Note
Since the coaxial cable supplies high voltage for detector operation, splicing or re-terminating cables must be done very carefully. Improper termination will result in shorting out the high voltage, a DET FAIL condition and/or blown fuse condition.

Optional Remote Alarms

Remote alarm monitors such as the Model 05-446 may be operated by the Product.

Maintenance

Warning
To prevent possible electrical shock, fire, or personal injury:
• Do not operate the Product with covers removed or the case open. Hazardous voltage exposure is possible.
• Batteries contain hazardous chemicals that can cause burns or explode. If exposure to chemicals occurs, clean with water and get medical aid.
• Have an approved technician repair the Product.
• Use only specified replacement parts.
• Only certified technician or calibration personnel should
replace battery.

Cleaning Instructions and Precautions

The Product may be cleaned externally with a damp cloth using only water as the wetting agent. Do not immerse the instrument in any liquid. Observe the following precautions when cleaning:
1. Turn the instrument OFF and disconnect the instrument power cord.
2. Allow the instrument to sit for 1 minute before cleaning.

Replacement of Mains Fuse

Fuses should be changed by a maintenance technician approved by the manufacturer only.
Warning
For continued protection against the risk of fire, replace only with fuse of the specified type and current rating.

Detector Connector

Cables should be installed by qualified personnel only.
Warning
To prevent possible electrical shock, fire, or personal injury, do not touch the center pin of the detector connectors unless the unit has turned off and the power has been removed for at least 1 minute.
18
Digital Doorway Monitor
Maintenance

Recycling

The manufacturer of this instrument supports the recycling of the electronics products it produces for the purpose of protecting the environment and to comply with all regional, national, and international agencies that promote economically and environmentally sustainable recycling systems. To this end, the manufacturer strives to supply the consumer of its goods with information regarding reuse and recycling of the many different types of materials used in its products. With many different agencies, public and private, involved in this pursuit it becomes evident that a myriad of methods can be used in the process of recycling. Therefore, the manufacturer does not suggest one particular method over another, but simply desires to inform its consumers of the range of recyclable materials present in its products, so that the user will have flexibility in following all local and federal laws.
The following types of recyclable materials are present in manufacturer’s electronics products, and should be recycled separately. The list is not all­inclusive, nor does it suggest that all materials are present in each piece of equipment:
• Batteries Glass Aluminum and Stainless Steel
• Circuit Boards Plastics Liquid Crystal Display (LCD)
Products, which have been placed on the market after August 13, 2005, have been labeled with a symbol recognized internationally as the “crossed-out wheelie bin.” This notifies the consumer that the product is not to be mixed with unsorted municipal waste when discarding; each material must be separated. The symbol will be placed near the AC receptacle, except for portable equipment where it will be placed on the battery lid.
The symbol appears as such:
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05-450
Users Manual

Drawings

Figure 4. Typical Installation 385x442
375-30RWM Typical Installation
375-30rwmtypicalinstallation.eps
20
Digital Doorway Monitor
Drawings
Figure 5. Detector Enclosure 385x106
M3503_3530_375-30 Enclosure
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05-450
Users Manual
22
375-30_3530 Detector Mounting
Figure 6. Detector Mounting 385x120
0
1.6481.648
Use #6 screws
6.000
Drawing to actual size may be used as template.
2.679
Anchors must be able to hold
12 pounds per screw, and must be appropriate
for wall construction.
Minimum clearance 3 3
0
05-450
Users Manual
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