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Alcotest 7410 GLC User’s Manual

1

Introduction

A peace officer must have reasonable and

probable grounds to believe a person has

committed an offence under Section 253 of

the Criminal Code before demanding an

evidentiary breath test. This means the

peace officer must believe that the person

was driving while either 1) impaired or

2) the blood alcohol concentration exceeded

80 mg% (milligrams of alcohol in 100

millilitres of blood). It is important for the

peace officer to understand the distinction

between these two possibilities.

Grounds for impaired driving are acquired

by observing the driving pattern, physical

appearance and other symptoms displayed

by the subject. Sobriety tests can be useful,

too, although you may need to give a

warning to the subject to avoid admissibility

issues in court. Obtaining grounds this way

is often time-consuming and dependent on

the experience and judgement of the peace

officer. Also, individuals experienced in the

consumption of alcohol may show few or no

effects and avoid detection.

The average blood alcohol concentration

(BAC) of drivers apprehended this way is in

the range of 160 to 170 mg%, well beyond

the legal limit. This means that mostly

intoxicated

 drivers are apprehended in this

manner and not 

impaired

 drivers.

(Intoxicated drivers are severely impaired

and demonstrate gross physical symptoms.

Impaired drivers show few symptoms but

still represent a high risk of being

responsible for a motor vehicle accident.)

To detect impaired drivers, the peace officer

needs to use the second means of acquiring

reasonable and probable grounds. This is a

roadside test that allows the peace officer to

form the belief that the BAC exceeds

80 mg%.

The development of accurate and rapid

scientific instruments capable of being used

at the roadside was a major milestone in

impaired driving enforcement. The first

approved screening device

 (ASD) was

introduced in 1977. Several different

instruments are currently included in the

Approved Screening Devices Order.

Among them are the 

Alcotest 7410 PA3

 and

the 

Alcotest 7410 GLC.

 Both of these are

distributed and serviced in Canada by

Dräger Canada of Mississauga, Ontario. The

PA3 and GLC are identical except that the

PA3 gives analog readings only

(PASS-ALERT-FAIL) while the GLC gives

a digital readout in the PASS range.

NOTE: Saskatchewan uses the GLC model

almost exclusively and reference will be

made throughout this manual to the GLC.

Unless otherwise indicated, all information

also applies to the PA3. For conciseness,

“GLC” is sometimes used as an

abbreviation for “Alcotest 7410 GLC.”

A peace officer should have thorough

Содержание Alcotest 7410 GLC

Страница 1: ...Alcotest 7410 GLC Operator Manual Prepared By Toxicology Services National Forensic Services Amended April 2011 ...

Страница 2: ...s And Maintenance 9 Law and Field Use of the Alcotest 7410 GLC 10 Glossary and Abbreviations 13 Note The instructions procedures and policies included in this manual were in effect at the time of its writing They are subject to revisions imposed by amendments to the Criminal Code Saskatchewan Traffic Safety Act or the Vehicle Administration Act case law decisions manufacturers instructions and cha...

Страница 3: ...ivers are apprehended in this manner and not impaired drivers Intoxicated drivers are severely impaired and demonstrate gross physical symptoms Impaired drivers show few symptoms but still represent a high risk of being responsible for a motor vehicle accident To detect impaired drivers the peace officer needs to use the second means of acquiring reasonable and probable grounds This is a roadside ...

Страница 4: ...ding the lungs brain and liver It is the depressant action of alcohol in the brain that causes impairment and intoxication Elimination of the alcohol begins immediately after it has entered the blood Most of the alcohol 90 98 is eliminated by metabolism in the liver The remainder 2 10 is eliminated unchanged through urine sweat breath and other body fluids Unlike absorption the elimination process...

Страница 5: ...Alcotest 7410 GLC User s Manual 3 Description ...

Страница 6: ... battery power is low and operation can be continued for only a few minutes Return the device to the charging unit If you are using disposable alkaline batteries Lo Bat will come on as part of the normal operational cycle It does not indicate that the batteries must be replaced When there is insufficient power to conduct a test the instrument will automatically shut off NOTE The users must be awar...

Страница 7: ...displayed Note and record the result 10 Turn off the device by pressing the side button twice D Improper Sample If the sample was interrupted too short or too weak an E0 indication is briefly displayed The Ready light goes out and the tone ceases followed by two short audible signals When the Ready light reappears instruct the person to blow again No results will be displayed until a proper breath...

Страница 8: ... A microprocessor evaluates this current to determine the BAC The BAC is displayed in the LCD window Normally the result is provided in 10 to 25 seconds As indicated there are two reaction processes The first reaction is fast and allows the BAC to be measured quickly The second reaction is slow and must go to completion before another test can be conducted The time interval before the next test ca...

Страница 9: ...ossibility of a falsely high ASD test NOTE High alcohol concentrations obtained from mouth alcohol could shorten the life of the electro chemical sensor 2 Smoking Tobacco smoke in the expired air can cause damage to the electro chemical sensor If the subject taking the test is smoking it is important that you have the person stop Then wait for at least three minutes before taking a breath sample 3...

Страница 10: ...hol was discussed earlier If the observation period was not properly observed there may be residual alcohol in the mouth at the time of the GLC test This will cause the ASD test to be higher than the evidentiary test 3 Tolerance of the instruments All scientific instruments have a distinct precision It is often called the tolerance and is expressed with a plus and minus value e g 10 mg No instrume...

Страница 11: ...t after switching on and 4 minute interval Instrument malfunction Refer to calibrator for possible return to Dräger Service No continuous tone when blowing into the instrument Instrument not ready for measurement Wait until green Ready light is lit E0 Subject not blowing hard or evenly enough Remind subject how to blow E1 Sensor fault Switch device off and on If E1 re appears sensor must be replac...

Страница 12: ...ng driving offences approved screening device means a device of a kind that is designed to ascertain the presence of alcohol in the blood of a person and that is approved for the purposes of this section by order of the Attorney General of Canada The key here is that before any screening device can be used it must be approved for use and appear on the Approved Screening Devices Order The Alcotest ...

Страница 13: ...erations Besides the Criminal Code the ASD user must be aware of Division or departmental policy related to ASD use The Operational Manual and F Division policy should be consulted regularly for up to date policy Some of the highlights in policy are presented here Municipal police officers should consult their own department policy manuals For reference policy sections dealing with ASD use are Ope...

Страница 14: ...llowing actions are normally taken 1 0 to 49 mg on the GLC Investigate possibility that drugs or illness are responsible for condition OR Release suspect unless grounds exists for suspension under graduated licensing 2 A ALERT suspend licence under Sec 146 1 146 3 T S A or Sec 78 2 V A A if applicable Release driver 3 F FAIL demand an evidentiary breath test in accordance with Section 254 3 a i C ...

Страница 15: ...e e g Alcotest 7410 GLC BAC blood alcohol concentration C C Criminal Code evidentiary instrument an approved instrument pursuant to the Criminal Code e g Intoxilyzer 5000C or Intox EC IR II GLC Alcotest 7410 GLC T S A Traffic Safety Act V A A Vehicle Administration Act mg milligrams of alcohol in 100 millilitres of blood ...

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