CMi Intoxilyzer S-D2 User manual

S-D2
OPERATOR’S MANUAL
650132LevA

S-D2
Operator’s
Manual
316 E. 9th St.
Owensboro,KY42303
866-835-0690
Fax:[phone]
www.alcoholtest.com
© 2002 by CMI, Inc.
No part of this work covered by the copyrights hereon may
be reproduced or copied in any form or by any means—
graphical,electronic,mechanical,including photocopying, taping
orinformationstorageandretrievalsystems—without
written permission of CMI, Inc.

INTRODUCTION . . . . . . . . . . . . . . . . . . . 1
PRINCIPLES OF OPERATION . . . . . . . . . 2
• Instrument Features . . . . . . . . . . . . . 3
Mouthpiece
Sampling Port
“SET” Button
“READ” Button
Alcohol Level Display
Calibration Control
Breath Sampling Lights
Battery
Leather Case
SUBJECT BREATH TEST . . . . . . . . . . . . 7
• Ambient Temperature . . . . . . . . . . . . 7
• Preliminary . . . . . . . . . . . . . . . . . . . . 8
• Detailed Procedure . . . . . . . . . . . . . . 8
Ready Check
SET
Attach Mouthpiece
Instruct the Subject
Take Sample
Observe Display
Discard Mouthpiece
Reset and Wait
CALIBRATION REQUIREMENTS: USE OF
THE DRY GAS STANDARD . . . . . . . . . . 14
TABLE OF
CONTENTS
INTOXILYZER®S-D2 Operator’s Manual

• The Alcohol Standard . . . . . . . . . . . . 14
• The Gas Standard . . . . . . . . . . . . . . . 15
• Using a Dry Gas Standard
at High Altitude . . . . . . . . . . . . . . . . 15
• Altitude Correction Chart . . . . . . . . . . 16
• Use of a Wet-Bath Simulator . . . . . . . 17
CALIBRATION CHECK PROCEDURE . . . 18
• Detailed Procedure . . . . . . . . . . . . . . 18
Ready Check
SET
Sample the Dry Gas Standard
Read the Display
Reset and Wait
CALIBRATION ADJUSTMENT . . . . . . . . . 21
• The Calibration Control . . . . . . . . . . . 21
• The Dry Gas Calibration Value . . . . . . 21
• Detailed Procedure . . . . . . . . . . . . . . 22
Preliminary
Ready Check
SET
Sample the Dry Gas Standard
Adjust the Display to the Value of the
Dry Gas Standard
Reset and Wait
ROUTINE FIELD SERVICE CHECKS . . . . 27
• Battery Check & Replacement . . . . . . 27
• Sampling System Check . . . . . . . . . 28
• Breath Sampling Light Check . . . . . . . 29
• Test Fuel Cell Switch . . . . . . . . . . . . 31
• Fuel Cell Replacement . . . . . . . . . . . 31
POINTS TO REMEMBER . . . . . . . . . . . . . 32
• Test Procedure . . . . . . . . . . . . . . . . . 32
• Mouthpiece . . . . . . . . . . . . . . . . . . . . 33
• Smoking . . . . . . . . . . . . . . . . . . . . . . 33
• Food and Drink . . . . . . . . . . . . . . . . . 33
• Storage Between Tests . . . . . . . . . . . 33
• Radio Transmitters . . . . . . . . . . . . . . 34
• Physical Shock . . . . . . . . . . . . . . . . 34
INTOXILYZER®S-D2 SPECIFICATIONS . . 35
INTOXILYZER®S-D2 Operator’s Manual

INTRODUCTION
The Intoxilyzer®S-D2
representsa wellestablished
conceptinbreathalcohol
testing analysis. It is used
worldwideinlawenforce-
ment,transportationand
workplace safety applications. The S-D2 is just
oneof the range of instruments manufactured by
CMI, Inc. for these purposes.
TheIntoxilyzer®S-D2isaccurate and reliable,
allowinga complete breath test procedureto be
conducted in about one minute.
Thismanualdescribes the operation,
maintenance,calibrationcheck,and calibration
adjustment of the S-D2. This manual should be
readcompletelyandfullyunderstoodbyeach
operator prior to testing a subject. It is further
recommendedthatoperatorspractice the breath
testing process before giving an actual “in the
field” test.
The information contained in this manual concerning operational
procedures, protocols, accuracy verification schedules and
techniques is presented solely for the purpose of establishing a
general knowledge of the instrument and its operation. CMI
recognizes that many law enforcement customers have
agencies responsible for specifying instrument procedures,
protocols and techniques based upon their individual needs,
current laws and pre-existing administrative rules. Therefore, if
any such procedure, protocol, schedule or technique described
in this manual conflicts with the rules set forth by a recognized
governing agency, CMI defers to those authorized entities.
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INTOXILYZER®S-D2 Operator’s Manual

PRINCIPLES OF
OPERATION
TheIntoxilyzer®S-D2
usesan electrochemical
fuel cell, containing two
platinumelectrodes,to
detectandmeasurethe
concentrationof alcohol vapor in expired breath.
When breath is drawn into this fuel cell, by means
of the sampling system, a small voltage is
generatedinproportiontoitsbreath alcohol
concentration. This fuel cell is fed to an electronic
amplifier and displayed on a digital meter (liquid
crystal).
The S-D2 incorporates two breath sampling lights,
controlledbyaninterlinked pressure switch and
timer system. The sampling lights show the
operator if the subject is blowing correctly, and
whenhehasprovided a suitable sample of breath
foranalysis.
The instrument is simple to operate and may be
usedasoftenasrequired,providedthatasuitable
delayis allowed between successive tests. This
time delay allows the fuel cell to clear itself of
alcoholandpreventsthepossibilityofadditive
readings. If no alcohol is present in a test, a
secondtestmay be analyzed immediately, since
the fuel cell voltage is already at zero. Unless the
breath alcohol level of the subject is very high,
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INTOXILYZER®S-D2 Operator’s Manual

3
theinstrument will generally beclear enough toreceive
and analyze the second sample in less than two minutes.
INSTRUMENT FEATURES
1)Mouthpiece
This is attached to the sampling port. For
hygenicreasons, mouthpieces are supplied
separatelypackedandaredisposable. Anew
mouthpiece must be used for each breath test.
Thisminimizeshealth concerns and prevents
cross-samplealcohol contamination.
2) Sampling Port
This forms the entrance to the fuel cell detector.
When inserted into the small hole in the side of
the mouthpiece, it allows a small portion of
breath to be drawn into the instrument for
analysis.
3) ‘SET’ Button
This button forms part of the sampling system.
When fully depressed, the button locks to set
the instrument ready for sampling. When the
‘SET’ button rises, the sample to be analyzed
is drawn directly into the fuel cell detector.
4) ‘READ’ Button
This button has two functions:
1) to release the ‘SET’ button and take
thesample,
2) to switch on the amplifier and display
systems
INTOXILYZER®S-D2 Operator’s Manual

4
INTOXILYZER®S-D2 Operator’s Manual
INSTRUMENT
FEATURES
1 Mouthpiece
2Sampling Port
3 ‘SET’ Button
4‘READ’ Button
5 Alcohol Level Display
6 Calibration Control (on side)
7 Breath Sampling Lights
8 Battery (on bottom)
9 Leather Case
1
3
4
5
6
7
8
9
2

5
The ‘READ’ button is spring loaded.
Momentarydepressionwill take the breath
sample. Constantpressureis required to
switch on the amplifier and display systems.
5)AlcoholLevelDisplay
This three digit, liquid crystal display shows
thebreathalcoholconcentrationof the subject.
The display has built-in illumination and is
activatedbydepressing the ‘READ’ button.
If the figure on the left shows ‘L’ when the
‘READ’ buttonisdepressed,thebatteryneeds
tobereplaced.
6)Calibration Control
This screw control, located on the right side of the
case,isusedforperiodic calibration adjustments
with either a dry gas standard or wet bath
simulator.
7) Breath Sampling Lights
Light ‘A’ illuminates to indicate that the subject
is blowing hard enough to obtain a proper breath
sample. Light ‘B’ illuminates when the subject
has blown long enough and indicates when the
‘READ’ button should be pressed. In other
words, light ‘B’ illuminates when the subject has
providedasuitable sample for breath analysis.
8)Battery
The battery is located directly behind the sliding
base on the bottom of the S-D2. It powers the
amplifier, digital display and sampling lights and
INTOXILYZER®S-D2 Operator’s Manual

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INTOXILYZER®S-D2 Operator’s Manual
should be replaced when the letter ‘L’appears on
the left side of the display.
9)Leather Case
The S-D2 is supplied in a leather protective case.
The unit should be kept inside the case at all
times, except when calibrating, changing the
batteryorduringmaintenance.

Theoperating sequence for
testing a subject with the
Intoxilyer®S-D2 is simple,
consistingofthefollowing
basicsteps. Theseshouldbeunderstood and
followed toinsuremaximumefficiencyof operation.
OPERATION CHECK LIST
1. Ready Check
2. Set
3. Attach Mouthpiece
4. Instruct the Subject
5. Take Sample
6. ObserveReading
7. RemoveandDiscardMouthpiece
8. Reset and Wait
AMBIENT TEMPERATURE
The Intoxilyzer®S-D2 is designed primarily for use in the
32-104°degrees Fahrenheit (0-40° Celsius) temperature
range. Keeping the instrument within this range insures
minimum condensation of alcohol and water from the
7
SUBJECT
BREATH
TEST
INTOXILYZER®S-D2 Operator’s Manual

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INTOXILYZER®S-D2 Operator’s Manual
1) READY CHECK
The instrument should first be checked to insure it is
ready to receive a sample. This is accomplished by
breathandpermitsbothaccurate and rapid breath alcohol
measurements.
It is recommended that in very cold weather the
instrument is stored in a pocket (preferably inside a coat)
andreturnedthere after use.
PRELIMINARY
Ask the subject when he/she last took anything by mouth.
Somefoodsandeven “non-alcoholic” drinks may contain
traces of alcohol, which the subject may later claim
affected the result of the test through a “mouth alcohol”
effect. To prevent this, wherever possible, insure that a
delay of about 20 minutes has elapsed since the subject
took anything by mouth—even medicines which may
containalcohol.
Do not even allow the subject a glass of water prior to the
test since this will cool the mouth and dilute the saliva,
temporarily reducing the amount of alcohol in the breath,
and,consequently,theinstrumentreading.
Insure that no radio transmitter is currently being used in
the immediate vicinity of the test.
DETAILED PROCEDURE
Thissection describes in detail how the Intoxilyzer®
S-D2 is used in a breath test and examines what is
actuallyhappeningateachstageofthe operation. These
instructions are also given in the form of a checklist on the
card which accompanies the instrument as well as in the
“Introduction”sectionofthisoperator’smanual.

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INTOXILYZER®S-D2 Operator’s Manual
checking to insure the fuel cell is discharged and free of
alcoholfrom any previous sample. Elimination of alcohol
from the fuel cell should take no longer than two
minutes—exceptin unusual cases—depending on how
much alcohol was actually present in the last sample.
To conduct a READY CHECK, depress the ‘READ’button
and hold it down for at least ten seconds. This
will release the ‘SET’ button and switch on the amplifier
and display circuits. Observe the display; it should not
exceed .002 after ten seconds. If the display does not
show .002 or less during the ten second READY CHECK,
the fuel cell may have traces of residual alcohol from a
previous sample. If this occurs after a previous test,
depress the ‘SET’ button to lock and wait one minute
before repeating the READY CHECK. If the left digit
shows ‘L’, replace the battery.
2) SET
Once the READY CHECK is complete, the sampling
system must now be SET to prepare it to draw a breath
sample into the fuel cell for analysis. Press down the
‘SET’ button until it locks. This pushes down the
diaphragmand holds it against aspring-loaded catch.
This action also places a short-circuit across the fuel cell,
whichacceleratesitsinter-samplerecovery time.
To complete the READY
CHECK, depress the
‘READ’ button for at least
ten seconds.

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INTOXILYZER®S-D2 Operator’s Manual
Press the ‘SET’
button until it
locks.
3) ATTACH MOUTHPIECE
Attach a mouthpiece to the sampling port on the top of the
S-D2. This sampling port forms the entrance to the fuel
cell and pressure switch and it is essential that the
mouthpiece is pushed fully onto it.
The subject must be offered the wide-bore, lipped end of
the mouthpiece to blow through. If the subject blows into
the other end, the pressure switch will not be activated
and the sampling lights will not operate. The instrument
Firmly
attach
a new
mouthpiece
to the
sampling
port.

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INTOXILYZER®S-D2 Operator’s Manual
is now ready to receive a breath sample from the subject
foranalysis.
4) INSTRUCT THE SUBJECT
Instruct the subject exactly what must occur to provide a
suitable sample of breath for analysis. Tell the subject to
take a deep breath, blow strong enough to bring on light ‘A’
and keep blowing at that pressure long enough to bring on
light ‘B’. The subject must then continue blowing until
told to stop and you have taken the sample by pressing the
‘READ’ button. Warn the subject that if both sampling
lights fail to come on, there will not be a suitable sample of
breathfor analysis.
If the subject blows too hard then he/she may run out of
breath before the ‘B’ light comes on: just a moderate
breathflowrateisrequired.
Finally, the subject should keep hands away from the
instrument. If the subject clasps it, your view of the
sampling lights or your operation of the sampling
mechanism could be obstructed .
5) TAKE SAMPLE
Tell the subject to take a deep breath and blow through the
wide-bore, lipped end of the mouthpiece. The subject
must blow strongly enough to bring on sampling light ‘A’
and then continue to blow at this pressure until the ‘B’ light
is activated. At this point, the subject will have expelled
top lung air so that deep lung air is now being blown
A WORD ABOUT MOUTHPIECES...
The S-D2’s sampling port is designed specifically
for the particular S-D2 mouthpieces sold by CMI,
Inc. It is strongly recommended that
mouthpieces for the S-D2 be ordered from CMI
at 1-866-835-0690.

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INTOXILYZER®S-D2 Operator’s Manual
through the mouthpiece. Press the ‘READ’ button to
release the catch holding down the ‘SET’ button,
allowing it to rise. This pulls up the diaphragm, drawing
a small portion of breath from the mouthpiece directly
into the fuel cell detector.
It is imperative that the subject is still blowing when the
sample is taken. Both sampling lights must be on when
the sample is taken. The subject must, therefore,
continue blowing until told to stop. If the subject stops
blowing prematurely, the sampling lights will go out.
6) OBSERVE DISPLAY
Withdraw the instrument from the subject and continue
to hold down the ‘READ’ button. The fuel cell now
develops its signal, which takes about 30 seconds to
complete from the time of sampling. The maximum
sample reached is a measure of the amount of alcohol in
thebreathsample.
As the fuel cell charges, it will cause the display reading
to rise. The final value will be displayed after 20-30
secondsand is the alcoholconcentration of thesubject.
If the ‘READ’ button is accidentally released during this
time, the fuel cell signal will not be affected as long as the
‘SET’ button is not depressed. Simply re-press the
The subject
blows until light
‘B’ is activated.
The operator
then pushes the
‘READ’ button.

‘READ’ button within the 30 second signal development
time to continue reading the alcohol level on the digital
display.
It is important that the ‘SET’ button is not touched
during the reading development time. This would
flush the alcohol from the cell and partly discharge its
voltage and reduce the alcohol level.
7) DISCARD MOUTHPIECE
Havingcompletedthetestandobservedthealcohol
reading,youshould now remove and discard the
mouthpiece. Never use the same mouthpiece for
subsequenttests,on either the same or different subjects.
8) RESET AND WAIT
The instrument must now be RESET so it will be ready for
another test. This RESET is done by depressing the ‘SET’
button until it locks. This flushes out the fuel cell and short-
circuits its electrodes, allowing its voltage to return more
quicklyto zero.
If the display shows .003 or higher as a result of the test, it
maytakeseveralminutesbefore a satisfactory READY
CHECKcanbeobtainedbefore re-use of the S-D2.
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INTOXILYZER®S-D2 Operator’s Manual
0
30 20
The fuel cell will
take 20-30 seconds
to reach its
maximum voltage
and produce a final
reading.

CALIBRATION
REQUIREMENTS:
USE OF THE
DRY GAS
STANDARD
TheIntoxilyzer®S-D2usesanelectrochemicalfuel
cell to detect and measure the concentration of
alcohol in expired breath. The sensitivity of the
instrument changes slowly with time, due to aging
of the platinum electrode within the fuel cell. This
change in sensitivity is very slight and calibration
will not normally change significantly over a six
monthorlongerperiod.
Monthlycalibrationchecksarerecommendedto
determinewhencalibrationadjustmentisneeded.
Either a dry gas standard or wet-bath simulator
maybe used to generate the standardalcohol
vaporrequired.
THEALCOHOLSTANDARD
Calibrationchecksandadjustmentscan be
conveniently done using a dry gas standard. This
consists of a mixture of alcohol in air or nitrogen.
The quantity of alcohol in the gas is accurately
known and is shown on the label. Therefore, when 14
INTOXILYZER®S-D2 Operator’s Manual

15
INTOXILYZER®S-D2 Operator’s Manual
the instrument is calibrated using a dry gas standard,
subsequent breath tests will indicate the subject’s blood
alcoholconcentration(BAC).
Drygasstandardsaresuppliedinoneofthree ranges,
each range based around a legal limit which is in wide use:
.045% BAC, .085% BAC and .105% BAC.
THE GAS STANDARD
Thegascanisteris a high-pressure, disposable cylinder
fitted with a regulator. It contains enough gas for
approximately300calibrationchecksor adjustments.
The label on each cylinder is marked with an expiration
date. The gas should not be used after that time due to
deviationofalcoholconcentration of the gas mixture
outside the analytical specifications of the instrument. The
value shown on the label is within 2% of the true value of
the gas mixture.
When the cylinder is empty or time-expired, the regulator
canbesafelyunscrewed from the cylinder and retained for
use with a new cylinder. The old cylinder can then be
disposedor recycled.
USING A DRY GAS STANDARD AT HIGH ALTITUDE
The concentration of alcohol in the dry gas standard is
calculatedandcarefullycontrolledtogivethe correct vapor
concentration when the cylinder is used at sea level at
normal atmospheric pressure. At lower atmospheric
pressures,theconcentrationof alcohol in the vapor leaving
the cylinder will be less. The change in alcohol
concentrationdueto normal atmospheric pressure changes
at sea level is so small as to be negligible, but if the dry gas
standard was used at a high altitude, significant errors
would result if suitable corrections were not made.
It should be emphasized that the sensitivity of the S-D2

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INTOXILYZER®S-D2 Operator’s Manual
Elevationfrom Sea Level Correction Factor
0 1.000
500 .981
1000 .962
1500 .943
2000 .925
2500 .907
3000 .889
3500 .872
4000 .854
4500 .837
5000 .820
5500 .804
6000 .787
6500 .771
7000 .755
7500 .740
8000 .724
ALTITUDE CORRECTION CHART