S-D2
OPERATOR’S MANUAL
650132 Lev A
Operator’s
316 E. 9th St.
Owensboro, KY 42303
866-835-0690
Fax: 270 -685-6268
www.alcoholtest.com
S-D2
Manual
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
or information storage and retrieval systems—without
© 2002 by CMI, Inc.
written permission of CMI, Inc.
INTOXILYZER® S-D2 Operator’s Manual
INTRODUCTION . . . . . . . . . . . . . . . . . . . 1
PRINCIPLES OF OPERA TION . . . . . . . . . 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 T emperature . . . . . . . . . . . . 7
• Preliminary . . . . . . . . . . . . . . . . . . . . 8
• Detailed Procedure . . . . . . . . . . . . . . 8
Ready Check
SET
Attach Mouthpiece
Instruct the Subject
Take Sample
Observe Display
Discard Mouthpiece
Reset and Wait
CALIBRA TION 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
CALIBRA TION 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 SPECIFICA TIONS . . 35
INTOXILYZER® S-D2 Operator’s Manual
workplace safety applications. The S-D2 is just
one of the range of instruments manufactured by
CMI, Inc. for these purposes.
The Intoxilyzer® S-D2 is accurate and reliable,
allowing a complete breath test procedure to be
conducted in about one minute.
INTRODUCTION
The Intoxilyzer® S-D2
represents a well established
concept in breath alcohol
testing analysis. It is used
worldwide in law enforcement, transportation and
This manual describes the operation,
maintenance, calibration check, and calibration
adjustment of the S-D2. This manual should be
read completely and fully understood by each
operator prior to testing a subject. It is further
recommended that operators practice 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
1
governing agency, CMI defers to those authorized entities.
INTOXILYZER® S-D2 Operator’s Manual
PRINCIPLES OF
OPERATION
The Intoxilyzer® S-D2
uses an electrochemical
fuel cell, containing two
platinum electrodes, to
detect and measure the
concentration of alcohol vapor in expired breath.
When breath is drawn into this fuel cell, by means
of the sampling system, a small voltage is
generated in proportion to its breath 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,
controlled by an interlinked pressure switch and
timer system. The sampling lights show the
operator if the subject is blowing correctly , and
when he has provided a suitable sample of breath
for analysis.
The instrument is simple to operate and may be
used as often as required, provided that a suitable
delay is allowed between successive tests. This
time delay allows the fuel cell to clear itself of
alcohol and prevents the possibility of additive
readings. If no alcohol is present in a test, a
second test may 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
the instrument will generally be clear enough to receive
and analyze the second sample in less than two minutes.
INSTRUMENT FEA TURES
1) Mouthpiece
This is attached to the sampling port. For
hygenic reasons, mouthpieces are supplied
separately packed and are disposable. A new
mouthpiece must be used for each breath test.
This minimizes health concerns and prevents
cross-sample alcohol 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
the sample,
2) to switch on the amplifier and display
systems
3
INTOXILYZER® S-D2 Operator’s Manual
2
1
4
3
5
7
8
INSTRUMENT
FEATURES
1 Mouthpiece
2 Sampling Port
3 ‘SET’ Button
6
9
4 ‘READ’ Button
5 Alcohol Level Display
6 Calibration Control (on side)
7 Breath Sampling Lights
8 Battery (on bottom)
9 Leather Case
4
INTOXILYZER® S-D2 Operator’s Manual
The ‘READ’ button is spring loaded.
Momentary depression will take the breath
sample. Constant pressure is required to
switch on the amplifier and display systems.
5) Alcohol Level Display
This three digit, liquid crystal display shows
the breath alcohol concentration of the subject.
The display has built-in illumination and is
activated by depressing the ‘READ’ button.
If the figure on the left shows ‘L ’ when the
‘READ’ button is depressed, the battery needs
to be replaced.
6) Calibration Control
This screw control, located on the right side of the
case, is used for periodic 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
provided a suitable 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, digit al display and sampling lights and
5
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
battery or during maintenance.
INTOXILYZER® S-D2 Operator’s Manual
6
INTOXILYZER® S-D2 Operator’s Manual
basic steps. These should be understood and
followed to insure maximum efficiency of operation.
OPERATION CHECK LIST
SUBJECT
BREATH
TEST
The operating sequence for
testing a subject with the
Intoxilyer® S-D2 is simple,
consisting of the following
1. Ready Check
2. Set
3. Attach Mouthpiece
4. Instruct the Subject
5. Take Sample
6. Observe Reading
7. Remove and Discard Mouthpiece
8. Reset and Wait
AMBIENT TEMPERA TURE
The Intoxilyzer
32-104° degrees Fahrenheit (0-40° Celsius) temperature
range. Keeping the instrument within this range insures
minimum condensation of alcohol and water from the
®
S-D2 is designed primarily for use in the
7
INTOXILYZER® S-D2 Operator’s Manual
breath and permits both accurate and rapid breath alcohol
measurements.
It is recommended that in very cold weather the
instrument is stored in a pocket (preferably inside a coat)
and returned there after use.
PRELIMINARY
Ask the subject when he/she last took anything by mouth.
Some foods and even “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
contain alcohol.
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 , the instrument reading.
Insure that no radio transmitter is currently being used in
the immediate vicinity of the test.
DET AILED PROCEDURE
This section describes in detail how the Intoxilyzer
®
S-D2 is used in a breath test and examines what is
actually happening at each stage of the 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” section of this 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
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INTOXILYZER® S-D2 Operator’s Manual
checking to insure the fuel cell is discharged and free of
alcohol from any previous sample. Elimination of alcohol
from the fuel cell should take no longer than two
minutes—except in 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.
To complete the READY
CHECK, depress the
‘READ’ button for at least
ten seconds.
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
diaphragm and holds it against a spring-loaded catch.
This action also places a short-circuit across the fuel cell,
9
which accelerates its inter-sample recovery time.
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.
10
INTOXILYZER® S-D2 Operator’s Manual
is now ready to receive a breath sample from the subject
for analysis.
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.
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
breath for analysis.
11
If the subject blows too hard then he/she may run out of
breath before the ‘B’ light comes on: just a moderate
breath flow rate is required.
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
T ell the subject to t ake 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
INTOXILYZER® S-D2 Operator’s Manual
The subject
blows until light
‘B’ is activated.
The operator
then pushes the
‘READ’ button.
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
the breath sample.
As the fuel cell charges, it will cause the display reading
to rise. The final value will be displayed after 20-30
seconds and is the alcohol concentration of the subject.
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
12
INTOXILYZER® S-D2 Operator’s Manual
0
20
30
The fuel cell will
take 20-30 seconds
to reach its
maximum voltage
and produce a final
reading.
‘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.
13
7) DISCARD MOUTHPIECE
Having completed the test and observed the alcohol
reading, you should now remove and discard the
mouthpiece. Never use the same mouthpiece for
subsequent tests, 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 shortcircuits its electrodes, allowing its voltage to return more
quickly to zero.
If the display shows .003 or higher as a result of the test, it
may take several minutes before a satisfactory READY
CHECK can be obtained before re-use of the S-D2.
INTOXILYZER® S-D2 Operator’s Manual
CALIBRATION
REQUIREMENTS:
USE OF THE
DRY GAS
STANDARD
The Intoxilyzer® S-D2 uses an electrochemical fuel
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
month or longer period.
Monthly calibration checks are recommended to
determine when calibration adjustment is needed.
Either a dry gas standard or wet-bath simulator
may be used to generate the standard alcohol
vapor required.
THE ALCOHOL STANDARD
Calibration checks and adjustments can 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
the instrument is calibrated using a dry gas standard,
subsequent breath tests will indicate the subject’s blood
alcohol concentration (BAC).
Dry gas standards are supplied in one of three ranges,
each range based around a legal limit which is in wide use:
.045% BAC, .085% BAC and .105% BAC.
THE GAS ST ANDARD
The gas canister is a high-pressure, disposable cylinder
fitted with a regulator. It cont ains enough gas for
approximately 300 calibration checks or adjustments.
The label on each cylinder is marked with an expiration
date. The gas should not be used after that time due to
deviation of alcohol concentration 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.
15
When the cylinder is empty or time-expired, the regulator
can be safely unscrewed from the cylinder and retained for
use with a new cylinder. The old cylinder can then be
disposed or recycled.
USING A DR Y GAS STANDARD AT HIGH AL TITUDE
The concentration of alcohol in the dry gas standard is
calculated and carefully controlled to give the correct vapor
concentration when the cylinder is used at sea level at
normal atmospheric pressure. At lower atmospheric
pressures, the concentration of alcohol in the vapor leaving
the cylinder will be less. The change in alcohol
concentration due to 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
INTOXILYZER® S-D2 Operator’s Manual
ALTITUDE CORRECTION CHART
Elevation from 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
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INTOXILYZER® S-D2 Operator’s Manual
itself to alcohol is not affected by changes in atmospheric
pressure; it is only the concentration of the alcohol in the
vapor from the dry gas standard that is affected.
The Altitude Correction Chart on the preceding page gives
the correction factors which should be applied to the stated
dry gas value when calibration checks or adjustments are
made at various altitudes above sea level.
Correction factor sample:
Suppose the dry gas standard you are using
has a value of .045% BAC at sea level, but
it is being used at an altitude of 500 feet.
Using the chart on page 16, the correction
factor would be (0.981). Therefore, the
corrected value of the dry gas standard
would now be (.045 x .981 = .044% BAC).
17
USE OF A WET BATH SIMULA TOR
If required, a wet bath simulator can be used instead of a
dry gas standard to perform calibration checks and
adjustments on the S-D2.
A wet bath simulator should be used according to its own
instructions. Pay particular attention to the alcoholic
strength and temperature of the solution used.
A mouthpiece should be attached to the simulator outlet for
direct attachment to the sampling port on the instrument.
A flow rate of air of about 1.5-2 liters per second should be
used. Any higher rate may result in the formation of an
aerosol and lead to excessive cooling of the solution itself.
The simulator vapor must be allowed to pass through the
mouthpiece for at least ten seconds before the sample is
taken for analysis.
INTOXILYZER® S-D2 Operator’s Manual
CALIBRATION
CHECK
PROCEDURE
The calibration check
procedure insures that the
Intoxilyzer® S-D2 is
reading alcohol levels
correctly and alerts the operator that a calibration
adjustment is needed.
CALIBRATION CHECK
CHECKLIST
1. Ready Check
2. Set
3. Sample the Standard
4. Read the Display
5. Reset and Wait
DET AILED PROCEDURE
It is recommended that a calibration check be
performed at least once every month.
To insure that the instrument’s fuel cell is at its
optimum sensitivity , there should be no breath tests
done on the unit in the previous ten minutes before
a calibration check is done.
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INTOXILYZER® S-D2 Operator’s Manual
1) READY CHECK
This insures that the instrument is ready to take a sample
of the dry gas standard and tests whether the fuel cell is
completely discharged and free of alcohol from a previous
sample. It also insures that the battery has sufficient power
to drive the electronic circuitry .
Press the ‘READ’ button and hold down for at least ten
seconds. This will release the ‘SET’ button and activate
the electronics. During these ten seconds, the display
should not read more than .002. A higher reading shows
that alcohol may still be present in the fuel cell. If this
occurs, depress the ‘SET’ button to lock, wait one minute
and repeat the ten-second READY CHECK.
If the letter ‘L’ is displayed, replace the unit’s battery.
2) SET
19
Assuming the READY CHECK has been completed,
depress the ‘SET’ button to lock. This prepares the
instrument to sample the dry gas standard.
3) SAMPLE THE DRY GAS STANDARD
Follow the procedure below to sample the standard:
a) Use a new mouthpiece and attach its
lipped end to the outlet on the regulator
button.
b) Insert the S-D2’s sampling port into the hole
on the mouthpiece.
c) Hold the instrument with your thumb
near the ‘READ’ button.
d) Depress the regulator button so that gas
begins flowing through the mouthpiece.
e) After about five seconds of continuous gas
flow, AND WHILE GAS IS STILL
INTOXILYZER® S-D2 Operator’s Manual
FLOWING, press the ‘READ’ button which
draws a sample of gas into the unit.
Continue to hold down the ‘READ’ button.
f) When the sample has been taken, release
the regulator button to stop the gas flow.
IT IS ESSENTIAL THAT THE GAS IS STILL
FLOWING WHEN THE ‘READ’ BUTTON IS
PUSHED.
4) READ THE DISPLAY
Disconnect the instrument from the mouthpiece—
continuing to hold down the ‘READ’ button—and observe
the display . The value shown on the S-D2 should rise
steadily and then stop, about 20-30 seconds from the time
the sample was initially “taken”.
If the final reading is within ±.005% BAC of the known value
of the gas standard, the instrument is calibrated properly
and no adjustments are needed.
If the maximum reading displayed shows a deviation from
the value of the standard, then calibration adjustment is
required, which is outlined in the next section.
5) RESET AND WAIT
After the final alcohol reading is noted, depress the ‘SET’
button to lock. This allows the fuel cell to clear itself of
alcohol before using the instrument for more tests. This will
take approximately two minutes.
20
INTOXILYZER® S-D2 Operator’s Manual
calibration compensates for any change in sensitivity of
the fuel cell detector over a period of time. Calibration
adjustment should not normally be required more than
two or three times per year.
It is very important that this section be read and
understood completely before attempting to recalibrate
the S-D2.
CALIBRATION
ADJUSTMENT
Calibration adjustment is
required when a calibration
check indicates the S-D2 has
deviated from a known
standard of alcohol vapor .
Adjusting the S-D2’s
21
THE CALIBRA TION CONTROL
Calibration is done by using the small screw adjustment
located on the right side of the instrument. It is
accessed through a hole in the S-D2’s outer case.
Turning the control clockwise decreases the reading on
the alcohol level display in response to the sampling of
the gas standard.
THE DRY GAS CALIBRA TION V ALUE
Since the fuel cell detector responds linearly to the
concentration of alcohol vapor in the standard, the actual
value of the dry gas standard used for calibration is not
important, provided that the instrument is actually
calibrated to this value.
INTOXILYZER® S-D2 Operator’s Manual
CALIBRA TION ADJUSTMENT
CHECKLIST
1. Preliminary
2. Ready Check
3. Set
4. Sample the Dry Gas Standard
5. Adjust the Display to the Value of
the Dry Gas Standard
6. Reset and Wait
DET AILED PROCEDURE
The calibration adjustment process assumes three
conditions:
• The instrument has not analyzed more than
two samples containing alcohol within the
previous hour or any sample within the
previous ten minutes,
• The instrument is in its normal operating
temperature range, and
• The battery does not need replacement.
1) PRELIMINARY
The instrument must first be removed from its protective
leather pouch. Remove the wrist strap by detaching the
split ring from the metal pillar . Then, insert the
screwdriver included with the S-D2 into the hole in the
pouch and ease the leather upwards taking care to
prevent the pillar from catching on the pouch. At the
same time, push the instrument upwards from the
bottom of the pouch, easing the pillar under the edges of
the hole.
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INTOXILYZER® S-D2 Operator’s Manual
2) READY CHECK
This insures that the instrument is ready to take a sample
of the dry gas standard and tests whether the fuel cell is
completely discharged and free of alcohol from a previous
sample. It also insures that the battery has sufficient power
to drive the electronic circuitry .
Press the ‘READ’ button and hold down for at least ten
seconds. This will release the ‘SET’ button and activate
the electronics. During these ten seconds, the display
should not read more than .002. A higher reading shows
that alcohol may still be present in the fuel cell. If this
occurs, depress the ‘SET’ button to lock, wait one minute
and repeat the ten-second READY CHECK.
If the letter ‘L’ is displayed, replace the unit’s battery.
3) SET
23
Assuming the READY CHECK has been completed,
depress the ‘SET’ button to lock. This prepares the
instrument to sample the dry gas standard.
Perform a
READY
CHECK and
then SET the
instrument.
0
10
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INTOXILYZER® S-D2 Operator’s Manual
Sample the dry gas standard.
4) SAMPLE THE DRY GAS STANDARD
Follow the procedure below to sample the standard:
a) Use a new mouthpiece and attach its
lipped end to the outlet on the regulator
button.
b) Insert the S-D2’s sampling port into the
hole on the mouthpiece.
c) Hold the instrument with your thumb
near the ‘READ’ button.
d) Depress the regulator button so that gas
begins flowing through the mouthpiece.
e) After about five seconds of continuous gas
flow, AND WHILE GAS IS STILL
FLOWING, press the ‘READ’ button
which draws a sample of gas into the unit.
Continue to hold down the ‘READ’ button.
f) When the sample has been taken, release
the regulator button to stop the gas flow.
IT IS ESSENTIAL THAT THE GAS IS STILL
FLOWING WHEN THE ‘READ’ BUTTON IS
PUSHED.
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INTOXILYZER® S-D2 Operator’s Manual
5) ADJUST THE DISPLAY TO THE VALUE OF THE
DRY GAS STANDARD
Continue to hold down the ‘READ’ button and turn the
calibration control screw on the right side of the S-D2
counter-clockwise until, after about ten seconds, the
display reading exceeds the value of the dry gas
standard. As the display rises still further, due to
continued charging of the fuel cell, turn the control
clockwise to maintain the display at the dry gas
standard value. As the fuel cell reaches its peak
voltage, the control will require no further adjusting.
The instrument is now calibrated. Do not turn the
control to increase the reading once the display (fuel
cell voltage) has passed its peak reading.
0
10
20
25
Adjust the
display slightly
counterclockwise to
exceed the dry
gas standard
value.
0
20
30
Turn the screw
slightly clockwise
to hold the
display at the dry
gas standard
value.
INTOXILYZER® S-D2 Operator’s Manual
If the display reading cannot be brought up to the
dry gas standard value, the fuel cell has reached the
end of its life and should be replaced. See the next
section for more information.
6) RESET AND WAIT
After the final alcohol reading is noted, depress the ‘SET’
button to lock. This allows the fuel cell to clear itself of
alcohol before using the instrument for more tests. This
will take approximately two minutes.
26
INTOXILYZER® S-D2 Operator’s Manual
the following checks at monthly intervals will insure that
your S-D2 is in proper working order with regard to its
other functional systems.
BA TTERY CHECK AND REPLACEMENT
ROUTINE
FIELD SERVICE
CHECKS
Although the calibration check
procedure shows whether the
instrument reads the dry gas
standard correctly , performing
27
If, when the ‘READ’ button is depressed fully down, the
left digit on the display shows the letter ‘L’, then the
battery is low in voltage and must be replaced. The
battery compartment is at the base of the instrument,
Insure that the
new 9-volt
battery is
correctly
connected to
the contacts.
INTOXILYZER® S-D2 Operator’s Manual
which must be removed from its protective pouch to
change its battery . The S-D2 requires one 9-volt battery.
First, remove the wrist strap by detaching the split ring from
the metal pillar . Then, insert the screwdriver included with
the S-D2 into the hole in the pouch and ease the leather
upwards as to prevent the pillar from catching on the
pouch. At the same time, push the instrument upwards
from the bottom of the pouch, easing the pillar under the
edges of the hole. Access to the battery is obtained by
sliding away the cover at the base of the instrument. When
replacing the battery , be sure to separate the contact
carefully and insure that the replacement battery is securely
connected and fitted inside its compartment inside the
instrument. After the battery is in place, the cover and
protective pouch can be reinstalled.
SAMPLING SYSTEM CHECK
A simple routine check on the operating ef ficiency of the
sampling system may be done by the following steps:
a) Press the ‘SET’ button to lock in the down
position and place a forefinger tightly over
the sampling port forming an airtight seal.
b) Press the ‘READ’ button fully down and
observe the ‘SET’ button. It should not rise
since air cannot be drawn into the system.
If the ‘SET’ button DOES rise at this time,
then there is probably a leak in the system,
and a qualified technician should be
consulted. Remove your finger from the
sampling port and the ‘SET’ button should
immediately rise. If the ‘SET’ button rises
slowly after you remove your finger from the
sampling port, the sampling system may
be blocked, and the instrument should be
returned to a qualified technician.
DO NOT , FOR ANY REASON, COVER THE SAMPLING
PORT AND FORCE DOWN THE ‘SET’ BUTT ON FROM
28
INTOXILYZER® S-D2 Operator’s Manual
ITS UP POSITION. THIS WOULD RUPTURE THE
SAMPLING DIAPHRAGM OR FUEL CELL
ELECTRODE AND NECESSITA TE THE
REPLACEMENT OF EITHER OR BOTH OF THESE
P ARTS.
Check the
S-D2’s sampling
system by 1)
pressing the
‘SET’ button to
the locked
position and
placing a
forefinger over
the sampling
port. 2) Press
the ‘READ’
button down
and observe the
‘SET’ button,
which should
not rise.
BREA TH SAMPLING LIGHT CHECK
This procedure checks the operation of the breath
pressure switch and the timing and operation of the
breath sampling lights:
29
INTOXILYZER® S-D2 Operator’s Manual
a) Insure that the ‘SET’ button is in the
locked down position.
b) Place a forefinger over the sampling port
and apply continuous pressure to the
‘SET’ button. This should activate the
pressure switch and cause sampling
light ‘A’ to illuminate, followed by light
‘B’ approximately 2½ seconds later .
Check the S-D2’s
sampling lights
by 1) locking the
0
SECONDS
‘SET’ button,
and then 2)
placing a
forefinger over
the sampling
port and
applying
continuous
pressure to the
‘SET’ button.
The ‘A’ light
should activate,
followed about
2½ seconds later
by the ‘B’ light.
SECONDS
0
2½
30
INTOXILYZER® S-D2 Operator’s Manual
TEST FUEL CELL SWITCH
When an alcohol sample has been taken, the reading
is cleared from the display and fuel cell recovery is
accelerated by depressing the ‘SET’ button. This
short circuits the fuel cell electrodes and accelerates its
discharge; immediate discharge is not generally
possible since alcohol will still be present on the
electrode surface.
To test and insure that this circuiting switch is working
properly , the following procedure should be done:
a) Take a sample of dry gas standard into
the S-D2.
b) Hold down the ‘READ’ button and
observe the display as it starts to
increase to the standard value. While
still holding down the ‘READ’ button,
press the ‘SET’ button fully down—you
will be holding both buttons down
at the same time. This should cause the
display to reset to .000.
c) Allow the instrument to clear before using
for further breath tests.
31
If the fuel cell reset switch test fails, the instrument
should be returned to an authorized agent for
inspection and repair .
FUEL CELL REPLACEMENT
When the fuel cell has reached the end of its working
life, as seen by the inability to calibrate the instrument
(see previous section), the complete instrument should
be returned to the manufacturer for a replacement fuel
cell to be fitted.
INTOXILYZER® S-D2 Operator’s Manual
POINTS
TO
REMEMBER
The following
information, if applied to
the operation of your SD2, will help prevent any
problems.
TEST PROCEDURES
Learn the operating sequence thoroughly , and with a
little practice, you will soon be completing tests in a
little more than one minute:
1. Ready Check
2. Set
3. Attach Mouthpiece
4. Instruct the Subject
5. Take Sample
6. Observe Display
7. Discard Mouthpiece
8. Reset and Wait
READY CHECK
Each breath test must be preceded by a satisfactory
READY CHECK.
MOUTH ALCOHOL
Twenty (20) minutes should p ass between the
32
INTOXILYZER® S-D2 Operator’s Manual
consumption of alcohol and a breath test using the
S-D2. This period allows for any “mouth alcohol” to be
dispersed.
MOUTHPIECE
Use a new mouthpiece for every test and insure that the
subject blows through the lipped edge, wide-bored end.
It is strongly recommended that only mouthpieces from
CMI, Inc. be used.
SMOKING
Smoking just prior to a breath test will not influence the
result, but tobacco smoke should not be blown through
a mouthpiece attached to the instrument. Tobacco
smoke could damage the fuel cell.
FOOD AND DRINK
33
Do not allow the subject to eat or drink before a breath
test. Although this will not generally af fect the result of
the analysis, certain cough drops may contain alcohol.
A subject could later claim that the cof fee to calm his
nerves was laced with something stronger causing a
high blood alcohol concentration.
STORAGE BETWEEN TESTS
Always store the S-D2 with the ‘SET’ button down.
This will keep the cell discharged so that the instrument
is always ready for a breath test, provided that a
satisfactory READY CHECK was obtained prior to
taking the sample.
Avoid storing the unit in temperature extremes.
INTOXILYZER® S-D2 Operator’s Manual
RADIO TRANSMITTERS
Do not use the S-D2 in close proximity to radio
transmitters while they are transmitting.
PHYSICAL SHOCK
The S-D2 is rugged and reliable but should be treated
with respect. Normal physical shock encountered in the
field will be no problem, but a hard jolt like a drop on the
floor or ground could be damaging. If you suspect that
a drop may have damaged the unit, perform a
calibration check.
34
INTOXILYZER® S-D2 Operator’s Manual
INTOXILYZER
®
S-D2
SPECIFICATIONS
MODEL: Intoxilyzer® S-D2
DETECTOR: Electrochemical fuel cell sensor
SPECIFICITY: Alcohol detector is unaffected by
acetone, paint and glue fumes,
foods, confectionery , methane
and practically any other
substance likely to be found
in breath (apart from those
which contain alcohol).
ACCURACY: Better than ±5% around the
BREA TH Aspirating sample system with
SAMPLING: subject blowing through
DISPLA Y: Illuminated three-digit liquid
35
calibrated level of a known
alcohol standard.
disposable mouthpiece.
crystal display giving direct
alcohol level readout.
INTOXILYZER® S-D2 Operator’s Manual
ANAL YSIS TIME: Approximately one minute per
test.
CALIBRA TION: With dry gas standard or
“wet bath” simulator.
RECOMMENDED 32-104° degrees Fahrenheit
OPERA TING (0-40° Celsius).
TEMPERA TURE
POWER SUPPL Y : 9-volt battery with sufficient
power for at least 500 tests.
DIMENSIONS: 2¾” wide x 1½” deep x
5” high (in pouch).
WEIGHT: 7½ ounces (including pouch and
battery).
WARRANTY: 12 month warranty, excludes
damage caused by mishandling
or improper use. Please consult
CMI, Inc. or your local agent
for full details of the warranty .
36
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