Intoximeters Alco-Sensor FST User manual

Alco-Sensor FST Operator Manual, Page 1 of 33, 11/30/2017
Alco-Sensor FST®
Operator Manual
Intoximeters, Inc.
St. Louis Missouri
Manual Part Number: 26-0140-00

COPYRIGHT
Alco-Sensor FST Operator Manual, Page 2 of 33, 11/30/2017
DISCLAIMER: The information provided in this Operators Manual is intended to offer access to
general knowledge about operational procedures, test protocols, quality assurance testing and
sampling techniques for this instrument.
Intoximeters, Inc. believes that a regulatory authority should set operating procedures, operator
training requirements, test protocols, quality assurance, maintenance requirements and testing
techniques to meet their alcohol testing program requirements.
This manual is not intended to supersede the guidelines set forth by the regulatory authority.
Intoximeters, Inc. offers technical support for users who wish to consult us or need maintenance or
repair service.
Copyright © 2003 - 2017
Information in this document is subject to change without notice. No part of this document may be
reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose,
without the express written permission of Intoximeters, Inc.
*PATENTS PENDING*

ALCO-SENSOR FST
Alco-Sensor FST Operator Manual, Page 3 of 33, 11/30/2017
WARRANTY
Unless otherwise determined by the purchase agreement Intoximeters, Inc. (“Intoximeters”) warrants to the original user-purchaser
that all new Intoximeter Breath Alcohol Analyzers are free from defects in material and workmanship, under normal use and service,
for a period of twelve (12) months from original invoice date. The following are not covered under this warranty: consumables or
supplies (i.e. mouthpieces, calibration gas, ink ribbons, printer paper) nor any damage which has, in Intoximeters Authorized
Sales/Service Outlet opinion, been the result of misuse, alteration, accident or abnormal conditions of operation or handling. Also
excluded from coverage under this agreement are printers and other hardware that are not manufactured by or for Intoximeters Inc.
and do not carry the Intoximeters trademark, trade name, or logo affixed to them.
Software is warranted to perform substantially in accordance with the accompanying written materials. Software is warranted to be
free from defects in materials and workmanship under normal use and service for a period of twelve months from original invoice
date.
If the product, under warranty, is returned to an Intoximeters Authorized Service Center and, upon examination, it is determined to be
defective, Intoximeters Authorized Sales/Service Outlet obligation is limited to repair, replacement or refund of purchase price.
Intoximeters Authorized Sales/Service Outlet reserves the option to choose repair, replacement or refund as the means to satisfy this
obligation. All products that are replaced become the property of Intoximeters.
Intoximeters shall not be responsible for any custom software, custom configuration information or memory data of customer
information contained in, stored on, or integrated with any products returned to Intoximeters, Inc. pursuant to any warranty, repair or
recertification.
CAUTION: THE INTOXIMETER BREATH ALCOHOL ANALYZER CONTAINS STATIC-SENSITIVE MEMORY
DEVICES. THE UNIT’S CASING SHOULD ONLY BE OPENED BY A FACTORY AUTHORIZED
TECHNICIAN.
This warranty does not apply if: the product has been repaired or modified by someone other than a factory authorized technician
without written permission from Intoximeters; if parts other than Intoximeters approved parts are used in replacement or repair; or if
any Intoximeters serial number has been removed or defaced.
For warranty service, contact your nearest Intoximeters Authorized Service Center to obtain an authorization return number and the
address of the closest repair center. The product should be sent to the Service Center with a description of the difficulty (postage and
insurance prepaid). Intoximeters Authorized Sales/Service Outlet assumes no risk for damage in transit. Intoximeters Authorized
Sales/Service Outlet will pay return postage for a product repaired under warranty. If Intoximeters Authorized Sales/Service Outlet
determines that the failure was caused by misuse, alteration, accident or abnormal condition of operation or handling, Intoximeters
Authorized Sales/Service Outlet will provide an estimate of repair costs before the repairs are made. Following repair, the product
will be returned to the purchaser via ground transportation prepaid (overnight or express delivery charges are additional), and the
purchaser will be billed for the repair and the shipping cost.
Repaired components are warranted for a period of 90 days from the billing date of the repair. The warranty on repaired components
is subject to the same limitations as this warranty. Components not repaired or replaced do not receive an extended 90-day warranty.
Warranty service is available outside the United States only on products purchased through an Intoximeters Authorized Sales/Service
Outlet in the country of use, or if the Purchaser has paid the applicable Intoximeters international price. If Purchaser transports a
product from the United States without having paid the applicable Intoximeters price, the product must be returned to the United
States to receive warranty service. Purchaser shall pay for transportation to the service center and shall bear the risk of loss or damage
in transit for all products so returned to the United States. Intoximeters reserves the right to invoice the Purchaser for importation
costs of repair/replacement parts when the product purchased in one country is exported and submitted for repair or service in another
country.
THIS WARRANTY IS THE PURCHASER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESSED OR IMPLIED. INTOXIMETERS SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, WHETHER ARISING FROM
BREACH OF WARRANTY OR BASED ON CONTRACT, TORT, RELIANCE OR ANY OTHER THEORY.
Note. Some countries or states do not allow the foregoing limitations. Other rights may also vary.

ALCO-SENSOR FST
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CONTENTS
Alco-Sensor FST®1
WARRANTY 3
CONTENTS 4
SECTION I INTRODUCTION 7
About This Manual 7
General Information 7
Unpacking and Inspection 7
Safety Tips and Warnings 7
Demonstration of a Non-Zero Reading 7
Smoke 7
Hand Sanitizers 7
Proper Environmental Conditions 7
Storage 8
Recommended Storage Conditions 8
SECTION II OPERATING PRINCIPLES 9
Alcohol and the Human Body 9
Alcohol’s Properties 9
Rate of Consumption 9
Absorption 9
Accumulation 9
Tolerance 9
Theory and Design of the Alco-Sensor FST 10
Fuel Cell Diagram 10
SECTION III COMPONENTS AND FUNCTIONS 11
Instrument Operating Components 11
Mouthpiece (23-0120-00) 11
Drink Sniffer/Mouthpiece (23-0190-00) 11
Passive Sample Cup (23-0130-00) 11
Display 11
ON Button 12
OFF Button 12
Batteries 12
Accessing Pass Code Features 12
SECTION IV CONDUCTING A SUBJECT TEST 13
Initial Preparation 13
Operator Training 13
Preconditions for Conducting a Test 13

CONTENTS
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Temperature Requirements 13
Calibration Requirements 13
Preparing the Instrument for a Subject Test 13
Mouthpiece and Powering up the Alco-Sensor FST 13
Preparing the Operator for a Test 14
Preparing the Subject for a Test 14
Screening Test Procedure 14
Performing a Subject Test - Step by Step 14
Instrument Operating Features 15
Automatic Blank Test 15
Automatic Sampling 15
Manual Sampling 16
Option / Features / Maintenance Menu 16
Test Recall (rcL) 17
Passive Sampling (PAS) 17
Road Block Test Mode / Quick Screen Test (rbL) 20
SECTION V ADMINISTRATIVE / MAINTENANCE FUNCTIONS 22
Overview 22
Accuracy Check Methods 22
Approved Dry Gas Standard 22
Approved Wet Bath Simulator (Standard) 23
Accessory 23
True-Cal II Device 23
Accuracy Check Intervals 24
Accuracy Check Tolerances 24
Inspection and Routine Maintenance 24
Performing an Accuracy Check 25
Unit Temperature 25
Accuracy Check Procedure Step by Step 25
Performing a Calibration 25
When to Perform a Calibration 25
Unit Temperature 26
Calibration Procedure - Step by Step 26
Battery Replacement Procedure 27
SECTION VI TROUBLE SHOOTING & TECHNICAL SUPPORT 28
Trouble Shooting 28
Aborting a Test 28
E11 - Blank Test is not Successful 28
E06 - Insufficient Breath Sample 28
Improper Breath Sample 28
Low Battery 28
Radio Frequency Interference (RFI) Sensor 28

ALCO-SENSOR FST
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E09 & E10 Temperature of Instrument too high or too low 28
Time Outs 29
Pass Code Features 29
Status Messages 29
Frequently Asked Questions 30
Factory Support and Repair 31
Shipping Methods and Instructions 31
Shipping Product to the Customer 31
Shipping Product to Factory for Repair 31

INTRODUCTION
Alco-Sensor FST Operator Manual, Page 7 of 33, 11/30/2017
SECTION I INTRODUCTION
About This Manual
This manual covers the operating information and procedures for the Alco-Sensor FST.
General Information
The Alco-Sensor FST is a hand-held breath alcohol-testing device designed to read blood/breath alcohol
concentrations. A disposable mouthpiece, two AA batteries, and a calibration standard are the only items
necessary to keep the Alco-Sensor FST operational. Two AA batteries should run well in excess of 1000 tests.
Under normal operating conditions, little more than routine maintenance checks are all that is required to keep your
Alco-Sensor FST operational.
Unpacking and Inspection
• Carefully open the packing carton and remove contents.
• Refer to the packing list in the box to ensure all items are accounted for.
• Inspect for any sign of shipping damage.
DO NOT DISCARD CARTON OR PACKING MATERIALS UNTIL YOU ARE SURE THAT ALL PARTS OF
SHIPMENT ARE DAMAGE-FREE AND IN WORKING ORDER. IN THE EVENT OF DAMAGE CONTACT THE
CARRIER AND INTOXIMETERS IMMEDIATELY.
Safety Tips and Warnings
Familiarize yourself with the operating instructions for the Alco-Sensor FST by reviewing this manual. Be sure you
understand how to perform all procedures properly before operating the Alco-Sensor FST.
Demonstration of a Non-Zero Reading
When simulating a non-zero reading on the Alco-Sensor FST DO NOT USE mouthwash or breath sprays. These
substances contain chemicals/substances, which may shorten the life of the fuel cell. Use any commercial spirit,
beer or wine to simulate a non-zero result. To avoid introducing exceedingly heavy concentrations of alcohol into
the instrument wait at least one minute after rinsing your mouth with an alcoholic solution before submitting a
sample.
Smoke
Under no circumstances should raw cigarette smoke be blown directly into the Alco-Sensor FST; it may shorten
the life of the fuel cell sensor.
Hand Sanitizers
The use of an alcohol based hand sanitizer should be avoided by the test site operator within 15 minutes of
operating a breath alcohol testing device. The fumes from the evaporating alcohol will dissipate rapidly. Waiting 15
minutes from the time of last use will provide enough time for this dissipation and eliminate the possibility that
ambient alcohol could influence a breath test result.
Proper Environmental Conditions
When operating or storing the Alco-Sensor FST avoid environments with heavy alcohol vapor, cigarette smoke,
and high levels of radio interference or magnetic fields. The Alco-Sensor FST is designed so these environmental
conditions should not affect the results of a test, however, these are not ideal testing environments and prolonged

ALCO-SENSOR FST
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exposure of the Alco-Sensor FST to some of these types of environmental factors may shorten the life of various
components. The Alco-Sensor FST is designed for all-weather operation; however, the instrument itself must be
within the proper temperature range to initiate a test sequence. (The Alco-Sensor FST is generally set up to
operate at instrument temperatures of 0°C to 50°C (32°F to 122°F)).
Storage
Storage in cold or moderately hot environments will not harm the Alco-Sensor FST. For prolonged storage avoid
extremely humid or arid environments.
Recommended Storage Conditions
Temperature: -15°C to 50°C (3° F to 122° F)
Humidity: 10% to 95% relative humidity
Pressure: 600 to 1300 hPa

OPERATING PRINCIPLES
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SECTION II OPERATING PRINCIPLES
Alcohol and the Human Body
Alcohol’s Properties
Alcohol is a general term denoting a family of organic compounds with common properties. Members of this family include
ethanol, methanol, and isopropanol. This introduction discusses the physical, chemical and physiological aspects of these
alcohols.
Alcohol is a clear, volatile liquid that burns (oxidizes) easily. It has very little characteristic odor and is soluble in water.
Alcohol is an organic chemical composed of carbon, oxygen, and hydrogen. When ingested, alcohol passes from the
stomach into the small intestine, where it is absorbed into the blood. Alcohol is a depressant and deadens nerve endings.
In small concentrations, alcohol can impair the brain’s delicate systems. As blood alcohol concentrations increase, a
person’s response to stimuli becomes less precise, speech becomes slurred, and motor skills are adversely affected. Very
high concentrations (greater than 0.4 grams/210 liters of breath or 0.4 grams/100 milliliters of blood) can result in a coma or
death.
Rate of Consumption
Blood alcohol concentration depends on the amount of alcohol consumed, the rate at which it was consumed, body size,
and the rate at which the user’s body metabolizes alcohol. Individual metabolic rates vary. However, a good rule of thumb
is that an average, healthy person, each hour metabolizes about the same amount of alcohol found in an average drink
(Average Drink = 1.5 ounces of 80 proof spirits or, 6-7 ounces of table wine (9% alcohol by volume) or a 12 ounce glass of
beer (5% alcohol by volume)).
Body size is also variable and will influence alcohol concentrations. An individual who weighs 300 pounds likely has twice
the body fluid as compared to a person who weighs 100 pounds. If the same amount of alcohol is consumed by two people
of very different size, the person with more body fluid will have a lower alcohol concentration. It is worth noting that the
smaller person’s blood alcohol concentration will drop more quickly than a larger person as both the smaller and larger
person will metabolize approximately one average drink per hour.
Absorption
Once the alcohol reaches the upper intestine it passes into the bloodstream rapidly. Alcohol is then absorbed into all body
tissues. Because of its affinity to water, alcohol can be found in blood, urine, saliva and any other body tissue that contains
water.
Accumulation
The liver oxidizes alcohol: this oxidation creates body energy. The body metabolizes (converts to energy) alcohol at a rate
of approximately an average drink per hour. Because the body metabolizes alcohol at a fixed rate, ingesting alcohol at a
rate higher than an average drink per hour (see explanation for average drink in preceding paragraph) results in a
cumulative effect - increasing blood alcohol concentration.
Tolerance
Acquired Tolerance is a person’s ability to mask the impairing effects of alcohol; it can be learned experientially. Body
Tolerance is related to physical factors, (i.e. body size, food in the stomach). Both types of tolerance affect how an
individual will respond to a given amount of alcohol.

ALCO-SENSOR FST
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Theory and Design of the Alco-Sensor FST
The Alco-Sensor FST contains a fuel cell sensor and an electrically operated piston-sampling pump. The fuel cell is a
porous disk coated with a thin layer of platinum black on both faces and saturated with an electrolyte. The cell is supported
at its outer edge in the fuel cell case. While a subject is blowing and when deep lung breath is reached the sampling pump
is activated. A small, fixed volume of deep lung breath is drawn onto the surface of the cell, any alcohol is subsequently
converted to acetic acid, electrons are released and a current is generated in proportion to the amount of alcohol oxidized.
The resulting electric current is translated into a Breath or Blood alcohol concentration and the result is displayed on the
Alco-Sensor FST.
If there is no alcohol present in the breath sample, no oxidation will occur. Because no electrons will be released, no
current will be generated and the result displayed will be a zero reading.
Fuel Cell Diagram
The Alco-Sensor FST fuel cell responds to alcohol in the human breath. It will not respond to acetone which may be found
in the breath of a diabetic, dieter or highly exercised individual. In fact, it has no significant cross sensitivity to any known
substance that might be found in a living human subject after a 15-minute deprivation period.
Fuel Cell
Breath
ALCOHOL
Acetic Acid
O2
H2O
CO2
(+)
e- e- e- e- e-
e- e- e- e- (-)
Platinum Black
Fuel Cell Housing
Porous Substrate

COMPONENTS AND FUNCTIONS
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SECTION III COMPONENTS AND FUNCTIONS
Instrument Operating Components
Mouthpiece (23-0120-00)
The mouthpiece is a critical portion of the sample assembly and specifically designed to be
used with the Alco-Sensor FST.
The cross section is a “D” shape which helps orient the mouthpiece when placing it on the
instrument. By inserting the closed end of the mouthpiece into the mouthpiece channel, and
then rotating the shaft of the mouthpiece downward, the flat side of the mouthpiece and the two
holes on the underside of the mouthpiece will naturally align and attach to the appropriate ports
on the Alco-Sensor FST.
Use only mouthpieces manufactured or approved by Intoximeters. The design of the
mouthpiece can affect both the analytical process and/or damage the instrument. Using
unapproved mouthpieces can void the instrument warranty and make it impossible for
Intoximeters to support test results generated while using these unapproved parts.
Drink Sniffer/Mouthpiece (23-0190-00)
The Drink Sniffer/Mouthpiece attachment is designed to improve the ASFST’s ability to test the
‘headspace’ above a beverage for the presence of alcohol.
Passive Sample Cup (23-0130-00)
The Passive Sampling Cup is designed to help automatically collect an air sample while a
subject is blowing in the direction of the instrument. For best passive results have the subject’s
mouth about two inches from the top of the cup, while the subject is blowing into the cup.
Display
The display turns on when the instrument is powered ON. If it is necessary to backlight the
display, pressing and holding the ON button down for an additional second.
Various commands and symbols appear on the display to direct the operator through the testing
protocol and to alert the operator of improper testing conditions detected by the system. (see
also Status Message, page 22).
Depending upon the version of the Alco-Sensor FST, the result may be displayed in two
digits, three digits or 0 (Zero), PAS (Pass), CAU (Caution), FAıl (Fail), and the unit of
measure may or may not be displayed.

ALCO-SENSOR FST
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ON Button
The ON button (labeled with a “I” symbol) is the larger of the two buttons on the Alco-Sensor
FST case. This button is located opposite the display and will naturally rest under the operator’s
forefinger when holding the instrument. The primary function of the button is to turn the
instrument ON, and this is accomplished by pressing the button down for one second, a beep
and/or the display powering ON will indicate that power up has been successful. (Note: If you
want to illuminate the display, hold the ON button down for an extra second on power up or
press the ON button at any point when the temperature is being displayed and the display will
illuminate). The ON button also allows an operator to capture a manual sample.
Additionally, the ON button is used to toggle through menu items to access certain features of
the instrument. The steps are described later in this manual. (see also: Manual Sampling, page 10).
OFF Button
The OFF button (labeled with an “0” symbol) is located on the Alco-Sensor FST case beneath the
display; depressing it and holding it down for two seconds, during normal operation, will manually
turn the instrument off. Manually turning the instrument off will always reset the instrument to the
standard subject test sequence. Note: The instrument does have an auto power down feature,
which powers the instrument down when it has not been used for a period of time.
The OFF button is also used to select several other features of the instrument. The steps are
described throughout this manual (see also: Options/Features and Maintenance Menu, page 10).
Batteries
The battery cover is located on the base of the Alco-Sensor FST. Two AA batteries should run
well in excess of 1000 tests at room temperature. When changing batteries always replace both
batteries.
Caution
When changing batteries always replace both batteries and never mix battery types.
When installing batteries, the proper polarity, or direction, must be observed. (On both the
inside of the case and on the circuit board in the battery compartment there is a guide for
proper polarity or direction).
In addition, some ASFSTs have a battery cover with the proper polarity
displayed on the outside of the battery cover. If your ASFST is equipped
with this style battery cover you can also use it to verify that the
batteries have been installed correctly.
After replacing the batteries, always power the instrument ON to verify proper installation – if
the ASFST does not power ON immediately remove the batteries and reinstall correctly or
replace with a new set.
Accessing Pass Code Features
Certain versions of the Alco-Sensor FST have a pass code or security feature on some menu
functions. (Pass Coded functions will display three digits with the last digit flashing).
If you access a menu function and the instrument does not operate according to the standard
instructions in this manual, contact your supervisor. If your supervisor does not have a pass
code key Intoximeters will need to be contacted.

CONDUCTING A SUBJECT TEST
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SECTION IV CONDUCTING A SUBJECT TEST
Initial Preparation
Operator Training
The results from a properly calibrated Alco-Sensor FST are no better than the quality of the sample collected. A
deep lung sample is essential to produce a breath alcohol reading that will correlate with the alcohol concentration
of the blood. The Alco-Sensor FST sampling system is designed to ensure that a deep lung sample is collected for
analysis.
Even though the Alco-Sensor FST has a very simple sample collection process, training on the use of the
instrument is recommended. Training is available through a variety of mediums. Both Classroom and Computer
based training provided on a CD are available from Intoximeters. For further information on training sessions and
the availability of training tools contact Intoximeters Training Department.
Preconditions for Conducting a Test
Temperature Requirements
The Alco-Sensor FST is generally set up to operate at instrument temperatures of 0°C to 50°C (32°F to 122°F).
Customized software is available from Intoximeters that will allow the Alco-Sensor FST to operate in a broader or
narrower temperature range. When the unit is in its operating temperature range it will function properly in
climates where ambient temperatures are in the range of -15°C to 50°C (3°F to 122°F).
Calibration Requirements
The accuracy of a subject test result is dependent upon a properly calibrated instrument. To determine the accuracy of
an instrument an accuracy check should be performed periodically. An accuracy check is performed by introducing, to
the Alco-Sensor FST, a sample containing a known concentration of alcohol (what is referred to in this manual as a
Standard Sample). The reading provided by the instrument must be within the established tolerances of the target
value of the standard sample for the instrument to be considered properly calibrated or accurate. Because different
testing programs have different requirements for the instrument, the definition of accuracy is dictated by the tolerances
established in the protocols of a specific testing program. Know the established tolerances of your program before
conducting an accuracy check. If you don’t have an established program, checking the instrument at no more than 31-
day intervals is a frequency that would be acceptable for most routinely used tolerance levels.
Your unit was calibrated at the factory before shipment. However, before using the instrument for subject testing you
should perform an accuracy check to ensure that the unit has maintained its calibration. To build a history of
instrument performance, record accuracy check and calibration results in a logbook along with the date of the test and
the expected or target value of the standard sample. (see also: Inspection and Routine Maintenance, page 24).
Preparing the Instrument for a Subject Test
Mouthpiece and Powering up the Alco-Sensor FST
For a subject test, an accuracy check or a calibration, always use a clean mouthpiece.
To avoid damaging the Alco-Sensor FST, the operator should be familiar with the correct procedure for attaching
the mouthpiece to the instrument.
The mouthpiece has both an open and a closed end. The open end should be made available for the subject to
blow into. The sealed, rounded end should be inserted into the mouthpiece channel on the top of the Alco-Sensor
FST.
In addition to the breath inlet hole there are three additional holes in the mouthpiece. One larger hole, on the top
of the mouthpiece toward the sealed end of the mouthpiece is the exit port for the subject’s breath flow. There are
also two smaller holes on the bottom, or flat portion of the mouthpiece. When the mouthpiece is mounted properly
these holes will be seated on both the fuel cell inlet port and the flow sensor port.

ALCO-SENSOR FST
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To initiate a test sequence, use a clean mouthpiece. Insert the long, closed end of the mouthpiece into the
mouthpiece channel. The mouthpiece is “D” shaped and when properly inserted, the flat side should be making contact
with the instrument.
The mouthpiece connection process is simplified if the end of the mouthpiece is first pressed into the mouthpiece
channel. Once the mouthpiece abuts the end of the guide, rotating the mouthpiece downwards attaches the
mouthpiece to the two ports and the instrument will be ready for testing.
Preparing the Operator for a Test
If the Operator has used an alcohol based hand sanitizer it is prudent that they dry their hands and wait fifteen
minutes before testing. The alcohol in the hand sanitizer will evaporate quite rapidly. Waiting 15 minutes from the
time of last use will provide enough time for this dissipation and eliminate the possibility that ambient alcohol could
influence a breath test result.
Preparing the Subject for a Test
Before initiating a test, explain to the subject how you want the subject to provide a sample.
Example: “When I tell you to, I want you to take a deep breath, hold it for a moment and then blow steadily into this
mouthpiece until I tell you to stop. Are you ready? Okay, take a deep breath, hold it, and now blow steadily for as
long as possible”.
Clear and simple instruction will help the subject give you a good sample.
Screening Test Procedure
Observing a fifteen-minute deprivation period (no foreign substance is introduced into the mouth during this period)
prior to sample collection will ensure the elimination of “mouth alcohol”.
Performing a Subject Test - Step by Step
ATTACH A
MOUTHPIECE.
Use a clean, unused mouthpiece from a sealed bag.
DEPRESS THE
POWER ON
BUTTON AND HOLD
FOR 1 SECOND.
This will turn the unit on.
If you wish to illuminate the display, hold the ON button down for an extra second or
two.
NOTE PRE-TEST
INFORMATION.
The Battery Strength Indicator and Temperature in °C (i.e. 28C) will be displayed
momentarily after the instrument is powered ON. As well, a battery indicator will be
displayed indicating the current condition of the battery. If the instrument does not
have sufficient battery power to perform a test either the instrument display will not
power on or BAT will be displayed and testing will be disabled. The standard Alco-
Sensor FST is designed to operate when the unit temperature (not the ambient
temperature) is between 0°C and 50°C. If the temperature is outside of the proper
operating range, the standard instrument will indicate a temperature out of range
condition before powering off. If you must perform a test with the instrument, place
the instrument in an environment that will bring it to a proper operating temperature.
BLN flashes on
display.
If your unit displays BLN, it is an indication that the instrument is performing a blank
test automatically. Your unit will then display the result of the blank test. If the blank
check is successful, a zero result appears on the display. If the blank check is not
successful, a status message E 11 (Air Blank Out of Range Message) is displayed
and the test sequence is aborted.
Depending upon the version of the Alco-Sensor FST, the blank test may or
may not be displayed. However, a failed blank test will always be indicated
with an error message (E 11) followed by the test sequence being
discontinued.

CONDUCTING A SUBJECT TEST
Alco-Sensor FST Operator Manual, Page 15 of 33, 11/30/2017
COLLECT A
BREATH
SAMPLE.
When the display shows the icon of a persons head flashing and/or BLO displayed,
instruct the subject to take a deep breath, hold it and then blow steadily through
the mouthpiece for as long as he or she can. The icon of the head will stop
flashing and a dash appears to the right of the head indicating that the instrument
senses sufficient breath flow. Additional dashes will appear as the subject
continues to provide a sample. Once three dashesappear an automatic sample
will be taken. It is not necessary for the subject to blow hard but rather a steady or
continuous sample is best for sample collection.
OBSERVE AND
RECORD THE
RESULT
As soon as a successful breath sample has been captured, the analyzing signal
“- _ _ “, “_ -_”, _ _ -” is scrolled across the display. At the end of the analysis a result
will be displayed.
Depending upon the version of the Alco-Sensor FST, the result may be
displayed in two digits, three digits or 0 (Zero), PAS (Pass), CAU (Caution),
FAıl (Fail), and the unit of measure may or may not be displayed.
REMOVE THE
MOUTHPIECE.
The result will be displayed for fifteen seconds before the instrument will power
itself off.
It is also possible to turn the instrument off manually by pressing the OFF button
for two seconds. To view the last test result after the instrument is powered off see
the section below on Test Recall. If you are interested in starting another test after
the instrument has been powered down, pressing the ON button will initiate the
next test sequence.
Instrument Operating Features
Automatic Blank Test
A blank test is a test that is run automatically by the instrument to check the sample chamber and the attached
mouthpiece to ensure that there is no alcohol present from a previous test. The automatic blank test must result in
a zero reading before the instrument will advance to the next step in the testing protocol. Depending upon the
version of instrument, the blank test may or may not be displayed. However a failed blank test will always be
indicated with an error message (E 11) followed by the test sequence being discontinued.
Note: Although the instrument cleans up quickly, keeping the unit warm will shorten the time it takes for the cell to
clear and give a zero reading on the blank test.
Automatic Sampling
A pressure sensor monitors breath flow and volume to determine when to capture a breath sample for analysis.
When breath flow is sensed by the instrument, the icon of the human head will stop flashing, bLo will disappear and
a "-” is displayed next to the icon of the head. This "-" indicates that the instrument has determined that the
minimum breath flow rate has been detected and that breath volume can start to be calculated. " - - - “ is displayed
when the minimal breath volume has been reached. After a minimum volume requirement has been met the

ALCO-SENSOR FST
Alco-Sensor FST Operator Manual, Page 16 of 33, 11/30/2017
sampling system will capture a sample for analysis when either the subject’s breath flow begins to decrease or a
second, greater volume threshold is met.
When the sampling system is activated a small sample of deep lung breath is drawn into the fuel cell chamber for
analysis.
If an improper breath sample condition is detected by the instrument, the sample will be rejected and the
instrument will flash “FLO” along with one of the following descriptors: “Lo”, “Hi”, “InS” or “Cut”. (see also: Status
Messages, page 20 for an explanation of the meaning for each of these displayed descriptors.) After this message
is displayed the instrument will return to the ready mode. If the subject is unable to provide a proper sample after
the preset number of attempts the instrument will power itself off. For this reason, it is important for the operator to
provide the subject with clear instruction on how to properly provide a breath sample. (Note: The standard Alco-
Sensor FST will allow the subject three attempts to provide a proper sample before it will display the status
message EO6 and power off.)
Manual Sampling
Manual Sampling is a feature that allows the operator to collect a sample either when the automatic sampling
function has been disabled or the subject is unable to provide the minimum volume of breath. This can occur in
both direct and passive testing modes.
When direct sampling (sampling when a subject blows into a mouthpiece) Manual sampling can produce results
that are as accurate as automatic samples but for best sampling technique, before using this method of testing, the
operator should be trained to collect a manual breath sample. Samples taken too early or after the breath flow has
ceased will result in readings that are lower than the actual deep lung BrACs or BACs.
In the rare occasion when a subject is unable to provide an adequate breath flow to trigger the automatic sample
capture feature, a Manual Sample Capture is possible. This process requires that the operator follow the normal
test procedure up to the point that “bLo” is displayed. At this point the operator should instruct the subject on how
to provide a sample.
As close to the end of the exhalation as possible (but while the subject is still blowing) the operator can collect a
Manual sample by pressing the ON button.
Errors in Manual Testing that must be avoided include capturing a sample before the subject begins blowing;
capturing a sample in the early part of the exhalation or capturing a sample after the exhalation has ceased. In all
of these cases a dilute sample will be drawn into the instrument for analysis and a corresponding low or zero result
will occur.
Option / Features / Maintenance Menu
While the instrument is powered down, by depressing and holding the OFF button down and then also depressing
the ON button, one can access a List of Optional Features included in the instrument software. This list includes,
but is not limited to the following features:
rcL– Allows the operator to Recall the last test result
PAS – Allows the operator to access the Passive Testing Mode
rbL – Allows the operator to access the Road Block Testing/Quick Test Mode
ACC – Allows the operator to access the Accuracy Check Mode
CAL – Allows the operator to access the Calibration Adjustment Mode
dSr – Allows the operator to view the Displayed Software Revision
Note: Certain versions of the Alco-Sensor FST have a pass code or security feature on some menu
functions. If you access a menu function and the instrument does not operate according to the
instructions in this manual, contact your Supervisor. If your Supervisor does not have a pass code key
Intoximeters will need to be contacted.
After gaining access to the menu function (which is indicated by rcL being displayed), pressing the ON button will
allow you to scroll through the list of options, pressing the OFF button will execute the option displayed at the time
the OFF button is depressed.

CONDUCTING A SUBJECT TEST
Alco-Sensor FST Operator Manual, Page 17 of 33, 11/30/2017
Test Recall (rcL)
After the test result has been calculated the instrument will display the result for several seconds after which the
instrument will power OFF. If the operator wants to review the result, while the instrument is OFF, momentarily press
the OFF button and then simultaneously press the ON button. The display will show the first menu item off a list of
optional functions that the instrument can perform. The first item on the list is rcL(Recall Last Test). To execute
this function, pressing the OFF button will prompt the instrument to alternately display the result from the last test
performed along with an intermittent displayed rcL.
Depending upon the version of the Alco-Sensor FST, the result may be displayed in two digits, three digits
or 0 (Zero), PAS (Pass), CAU (Caution), FAıl (Fail), and the unit of measure may or may not be displayed.
Passive Sampling (PAS)
Two common uses for this mode are to sample and determine if alcohol exists in the ambient air around a subject
or in the headspace over an unknown liquid substance. If alcohol is detected, a positive indication is displayed.
When performing a passive test of a subject, for best results, attach the Passive Sample Cup as shown in the
diagram below. If you are sampling the headspace of unknown liquid, the Passive Sampling Cup can be used, but
is not required.
Note: Certain versions of the Alco-Sensor FST have a pass code or security feature on some menu
functions. If you access a menu function and the instrument does not operate according to the
instructions in this manual, contact your Supervisor. If your Supervisor does not have a pass code key
Intoximeters will need to be contacted.
Performing a Passive Test
DURING POWER UP
DEPRESS AND HOLD THE
POWER OFF BUTTON WHILE
AT THE SAME TIME
PRESSING THE ON BUTTON.
RELEASE THE BUTTONS
ONCE rcLIS DISPLAYED
This will turn the unit on and display the first option from a menu listing. The first
option will be rcL.
DEPRESS THE POWER
ON
BUTTON TO SCROLL TO
THE PAS OPTION
When the
ON
button is pushed it will cycle to the next menu item. If you continue to
push the ON button, the instrument will cycle through the whole list of menu items
and will eventually scroll back to the rcLoption. For the purpose of performing a
passive test, cycle the message to the PAS option.

ALCO-SENSOR FST
Alco-Sensor FST Operator Manual, Page 18 of 33, 11/30/2017
DEPRESS THE
OFF
BUTTON
TO SELECT THE PASSIVE
MODE
Selecting the Passive Testing Mode by pressing the
OFF
button will initiate a
Passive Test. This will be indicated by the display first indicating the instrument’s
current temperature (for passive testing the operating range is from 0°C to 50° C)
and then flashing the PAS display. Once you see this flashing PAS display the Alco-
Sensor FST is prepared to capture a Passive Sample.
THIS MANUAL WILL DESCRIBE THREE WAYS TO CAPTURE A PASSIVE
SAMPLE. FIRST WE WILL DESCRIBE HOW TO COLLECT A PASSIVE SAMPLE
OVER AN OPEN CONTAINER. SECOND. WE WILL DESCRIBE HOW THE
INSTRUMENT IS DESIGNED TO AUTOMATICALLY COLLECT A SAMPLE OF
AIR FROM A SUSPECT WHO IS BLOWING IN THE DIRECTION OF THE
INSTRUMENT; AND FINALLY WE WILL DESCRIBE HOW TO COLLECT A
PASSIVE AMBIENT AIR SAMPLE FROM THE VICINITY OF A SUSPECTED
ALCOHOL USER.
Test an Open Container
To test a beverage for the presence of alcohol, attach the ‘mouthpiece drink sniffer’ and
put the instrument in the Passive Mode with “PAS” flashing.
The drink sniffer adapter allows the inlet port of the Alco-Sensor FST to extend
beyond the body of the instrument and provide better access for sampling the
alcohol vapor that sits just above the liquid in a glass. Proper use of the ‘drink
sniffer’ adapter will increase the sensitivity of the Alco-Sensor FST when testing the
gas (or headspace) above the surface of a liquid.
The ASFST, with the drink sniffer attached, should be positioned within one or two
inches above the surface of the liquid. (CAUTION: DO NOT IMMERSE THE DRINK
SNIFFER ADAPTER OR THE UNIT IN THE LIQUID). After several seconds press the ON
button and a sample will be captured for analysis. A “POS” or “E29” (status message) or
“E31” (status message) result likely indicates the presence of alcohol in the beverage.
A “nEG” result indicates that the alcohol content in the sample was negligible.
Test a Subject Passively
The best method to passively test a subject with the Alco-Sensor FST is to
automatically capture a sample from a subject who blows at the Passive Sampling
Cup. To accomplish this, the instrument must have a Passive Sampling Cup
attached and be in the Passive Mode with “PAS” flashing. (Note: the subject must
have his/her lips approximately 2” from the Passive Sampling Cup and the
subject must blow at the cup – see picture at left). In this mode, when the
instrument detects a consistent flow of breath reaching the sample inlet port, an
automatic sample will be collected for analysis. A “POS” result indicates the
presence of alcohol in the collected sample. A “nEG” result indicates that the
alcohol content in the sample was negligible. Have the subject blow in the
direction of the sample cup for as long as possible. Once you hear the instrument
click the sample has been taken, it will be analyzed and a result reported.

CONDUCTING A SUBJECT TEST
Alco-Sensor FST Operator Manual, Page 19 of 33, 11/30/2017
Test the Environment Around a Subject
Finally, to merely test the air in the vicinity of a subject for alcohol, the instrument
should be in the Passive Mode with “PAS” flashing. In order to capture a sample,
place the Alco-Sensor FST without the Passive Sampling Cup attached as near to
the subject as possible (preferably near his nose or mouth) and press the ON
button to capture a sample for analysis. A “POS” result indicates the presence of
alcohol in the air near the subject. A “nEG” result indicates that the alcohol content
in the air was negligible.
It is important to understand that the further the unit is from the subject’s mouth
and nose, the more dilute the sample will become and the less likely you will be
able to identify a meaningful concentration of alcohol. Also, Passive Sampling on
a subject only indicates the likely presence of alcohol; further direct sampling will
validate a positive or negative passive result.
Repeat Passive Testing
The FST is designed to perform repeat Passive Tests while in the Passive Mode.
After the result is displayed the instrument will go into a low power mode for two
minutes. This mode is indicated by a dash slowly moving across the top of the
display. Once in the low power mode there are three possible events that can
change the instrument’s mode of operation:
First, no buttons are pressed during the two-minute low power mode and the
instrument automatically powers OFF. The automatic power down mode will return
the instrument to a standard testing sequence and if the operator wants to perform
another Passive Test they must go through the menu selection process again.
A second option is that the operator presses the OFF button, powering the
instrument OFF prior to the end of the two-minute low power timer. Again, the
instrument will be in the standard direct sample mode if powered ON after this
occurs.
Finally, if the ON button is pressed while the instrument is in the low power mode,
the instrument will return to the Passive Mode (PAS flashing). With PAS flashing the
instrument is ready to perform another Passive Test. Using this feature allows an
operator to perform repeat Passive Samples with minimal delay between tests.

ALCO-SENSOR FST
Alco-Sensor FST Operator Manual, Page 20 of 33, 11/30/2017
Road Block Test Mode / Quick Screen Test (rbL)
The Road Block Mode was designed to accommodate situations where screening of a large group of individuals
occurs and time is of the essence.
Note: Certain versions of the Alco-Sensor FST have a pass code or security feature on some menu
functions. If you access a menu function and the instrument does not operate according to the
instructions in this manual, contact your Supervisor. If your Supervisor does not have a pass code key
Intoximeters will need to be contacted.
Performing a Quick Screen Test in the Road Block Test Mode
ATTACH A
MOUTHPIECE.
Use a clean, unused mouthpiece from a sealed bag.
DURING POWER UP
DEPRESS AND HOLD
THE POWER OFF
BUTTON WHILE AT THE
SAME TIME PRESSING
THE ON BUTTON.
RELEASE THE
BUTTONS ONCE rcLIS
DISPLAYED
This will turn the unit on and display the first option from a menu listing. The first
option will be rcL.
DEPRESS THE POWER
ON BUTTON TO SCROLL
TO THE rbLOPTION
When the ON button is pushed it will cycle to the next menu item. If you continue to
push the ON button the instrument will cycle through the whole list of menu items
and will eventually scroll back to the rcLoption.
For the purpose of performing a quick screen test, cycle the message to the rbL
option.
DEPRESS THE OFF
BUTTON TO SELECT
THE QUICK SCREEN /
ROAD BLOCK TEST
MODE
Selecting the Quick Screen / Road Block Testing Mode by pressing the OFF button
will initiate a Quick Test. This will be indicated by the display first indicating the
instrument’s current temperature (the operating range is from 0°C to 50° C) and
battery strength indicator. If the instrument does not have sufficient battery power to
perform a test either the instrument display will not power on or BAT will be
displayed and testing will be disabled.
Note: If you wish to illuminate the display you must hold the ON button down
for an extra second while the temperature is displayed.
COLLECT A BREATH
SAMPLE.
Before the instrument is ready for sampling it will momentarily display rbLindicating
you are conducting a test in the ROAD BLOCK TESTING mode.
When the display shows the icon of a persons head flashing and/or bLo displayed,
instruct the subject to take a deep breath, hold it and then blow steadily through the
mouthpiece for as long as he or she can. The icon of the head will stop flashing and
a dash appears to the right of the head indicating that the instrument senses
sufficient breath flow. Additional dashes will appear as the subject continues to
provide a sample. Once three dashesappear an automatic sample will be taken. It
is not necessary for the subject to blow hard but rather a steady or continuous
sample is best for sample collection.