BW Technologies GasAlertMicro 5 User manual

Quick Reference Guide
1, 2, 3, 4, 5 Gas Detector
50105442-036 EN-L
English
©BW Technologies 2017. All rights reserved.

Limited Warranty and Limitation Liability
BW Technologies LP (BW) warrants the product to be free from defects in material and workmanship under normal use and service for a period of
two years, beginning on the date of shipment to the buyer. This warranty extends only to the sale of new and unused products to the original buyer.
BW’s warranty obligation is limited, at BW’s option, to refund of the purchase price, repair or replacement of a defective product that is returned to
a BW authorized service center within the warranty period. In no event shall BW’s liability hereunder exceed the purchase price actually paid by the
buyer for the Product.
This warranty does not include:
a) fuses, disposable batteries or the routine replacement of parts due to the normal wear and tear of the product arising from use;
b) any product which in BW’s opinion, has been misused, altered, neglected or damaged, by accident or abnormal conditions of operation,
handling or use;
c) any damage or defects attributable to repair of the product by any person other than an authorized dealer, or the installation of unapproved
parts on the product; or
The obligations set forth in this warranty are conditional on:
a) proper storage, installation, calibration, use, maintenance and compliance with the product manual instructions and any other applicable
recommendations of BW;
b) the buyer promptly notifying BW of any defect and, if required, promptly making the product available for correction. No goods shall be
returned to BW until receipt by the buyer of shipping instructions from BW; and
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product is within the warranty period.
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INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. BW SHALL NOT BE LIABLE FOR ANY
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BASED ON CONTRACT, TORT OR RELIANCE OR ANY OTHER THEORY.
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damages, the limitations and exclusions of this warranty may not apply to every buyer. If any provision of this warranty is held invalid or
unenforceable by a court of competent jurisdiction, such holding will not affect the validity or enforceability of any other provision.
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i
GasAlertMicro 5/PID/IR
Table of Contents
Limited Warranty and Limitation Liability ..............0
Warranty Registration ..............................................0
Contacting BW Technologies by Honeywell .........0
Introduction ..............................................................1
Safety Information - Read First ...............................1
Informations de sécurité – À lire au préalable ......4
Sensor Poisons and Contaminants ........................7
Parts of the GasAlertMicro 5/PID/IR .......................8
Display Elements .....................................................9
Button ......................................................................10
Connecting the Gas Cylinder to the Detector .....10
Single Gas Calibration Cap .........................................11
Removing the Cap .................................................. 11
Pump .......................................................................12
Identifying the Pump ...................................................12
Pump Features ...........................................................13
Pump Alarm ................................................................13
Confined Space Sampling ..........................................13
Maximum Hose Length when Confined Space
Sampling ................................................................. 14
Bump Test ...............................................................15
Performing a Bump Test .............................................15
Calibration ..............................................................16
Alarms .....................................................................18
User Options Menu ................................................21
Maintenance ...........................................................22
Replacing Battery Cells and Packs ......................23
Replacing Alkaline Batteries ...................................... 24
Replacing Lithium Battery Packs ............................... 25
WEEE Directive and Battery Directive ....................... 25
Removal and Disposal of the Battery Pack ............ 25
Removal and Disposal of the Coin Cell.................. 26
Replacing a Sensor or Sensor Filter .......................... 28
Replacing the Pump Filter (Generation 2 Pump only) 29
Replacing the Pump Nozzle (Generation 2 Pump only)
30
Specifications .........................................................30
Information Required for European Regulations
Compliance .............................................................34
Tested Sensors ...................................................... 35
Performance Data According to EN 45544 Part 1 and 2
35
Troubleshooting .....................................................36
Replacement Parts and Accessories ...................42

1
GasAlertMicro 5/PID/IR
Introduction
GasAlertMicro 5/PID/IR
Introduction
The quick reference guide provides basic information to operate
the GasAlertMicro 5, GasAlertMicro 5 PID, and GasAlertMicro 5
IR gas detectors. For complete operating instructions, refer to
the GasAlertMicro 5/PID/IR User Manual provided on the
CD-ROM.
The GasAlertMicro 5, GasAlertMicro 5 PID, and
GasAlertMicro 5 IR detectors (“the detector”) are designed to
warn of hazardous gas levels above user-defined alarm
setpoints.
Note
Unless reference is made to a specific detector
model, the GasAlertMicro 5, GasAlertMicro 5 PID,
and GasAlertMicro 5 IR detectors are referred to as
GasAlertMicro 5/PID/IR.
The detector is shipped with English as the default
displayed language. Additional languages provided
are French, German, Spanish, and Portuguese. The
screens for the additional languages are displayed on
the detector and in the corresponding quick reference
guide.
Safety Information - Read First
Use the detector only as specified in this quick reference guide
and the user manual, otherwise the protection provided by the
detector may be impaired.
The detector is a personal safety device. It is your responsibility
to respond properly to the alarm.
Read the following Cautions before using the detector.
a Cautions
•Warning: Substitution of components may impair
Intrinsic Safety.
• Caution: For safety reasons, this equipment must be
operated and serviced by qualified personnel only. Read
and understand the user manual completely before
operating or servicing.
• Charge the detector before first-time use. BW
recommends the detector be charged after every
workday.
• Charge the battery pack immediately when a low battery
alarm occurs.
• Read and adhere to the battery cautions provided in
Replacing Battery Cells and Packs on page 23.

GasAlertMicro 5/PID/IR
Quick Reference Guide
2
• BW recommends that the combustible sensor be
checked with a known concentration of calibration gas
after any exposure to contaminants/poisons such as
sulfur compounds, silicon vapors, halogenated
compounds, etc.
• BW recommends to bump test the sensors before each
day’s use to confirm their ability to respond to gas by
exposing the detector to a gas concentration that
exceeds the alarm setpoints. Manually verify that the
audible and visual alarms are activated. Calibrate if the
readings are not within the specified limits.
• For an additional bump test caution relating to the
European Regulations, refer to page 15.
• Calibrate the detector before first-time use and then on
a regular schedule, depending on use and sensor
exposure to poisons and contaminants. The sensors
must be calibrated regularly and at least once every
180 days (6 months).
• Calibrate only in a safe area that is free of hazardous
gas in an atmosphere of 20.9% oxygen.
• Only the combustible gas detection portion of this
instrument has been assessed for performance by CSA
International.
• The combustible sensor is factory calibrated to 50%
LEL methane. If monitoring a different combustible gas
in the % LEL range, calibrate the sensor using the
appropriate gas.
• Caution: High off-scale LEL readings may indicate an
explosive concentration.
• Protect the combustible sensor from exposure to lead
compounds, silicones, and chlorinated hydrocarbons.
Although certain organic vapors (such as leaded
gasoline and halogenated hydrocarbons) may
temporarily inhibit sensor performance, in most cases,
the sensor will recover after calibration.
• For use only in potentially explosive atmospheres
where oxygen concentrations do not exceed 20.9%
(v/v). Oxygen deficient atmospheres (<10% v/v) may
suppress some sensor outputs.
• Any rapid up scaling reading followed by a declining or
erratic reading may indicate a gas concentration
beyond the upper scale limit, which can be hazardous.
• Extended exposure of the GasAlertMicro 5,
GasAlertMicro 5 PID, or GasAlertMicro 5 IR to certain
concentrations of combustible gases and air may stress
the detector element that can seriously affect its
performance. If an alarm occurs due to a high
concentration of combustible gases, recalibration
should be performed or, if needed, the sensor replaced.
• The BW pump module (M5-PUMP) is certified for use
with the GasAlertMicro 5, GasAlertMicro 5 PID, and
GasAlertMicro 5 IR models only.
• Protect the PID sensor from exposure to silicone
vapors.
• When calibrating O3 and ClO2 sensors that are located
in the Toxic 2 position of the detector, a single gas
calibration cap must be used to ensure accurate
calibration.

3
GasAlertMicro 5/PID/IR
Safety Information - Read First
• Replace the sensors only in a safe and non-hazardous
area that is free of hazardous gas in an atmosphere of
20.9% oxygen.
•Warning: The battery pack (M5-BAT08) is equipped with
a lithium battery that may present a risk of fire or
chemical burn hazard if misused. Do not disassemble,
heat above 212ºF (100ºC), or incinerate.
•Warning: Do not use any other lithium batteries that are
not designed for use with the GasAlertMicro 5,
GasAlertMicro5 PID, or GasAlertMicro5 IR detectors.
Use of any other cell can cause fire and/or explosion. To
order and replace the M5-BAT07 or the M5IR-BAT08
lithium battery pack, contact BW Technologies by
Honeywell.
•Warning: Lithium polymer cells exposed to heat at
266°F (130°C) for 10 minutes can cause fire and/or
explosion.
• Dispose of used lithium cells immediately. Do not
disassemble and do not dispose of in fire. Do not mix
with the solid waste stream. Spent batteries must be
disposed of by a qualified recycler or hazardous
materials handler.
• Keep lithium cells away from children.
• Before using common products around sensors, refer
to Sensor Poisons and Contaminants on page 4.
• High concentrations of certain toxic gases, for example
H2S, may have an adverse effect on the LEL sensor.
This effect, known as inhibition, is usually temporary
but in extreme circumstances can impair the sensitivity
of the LEL sensor.
• After any gas exposure that causes an alarm in the toxic
gas sensors, the LEL sensor should be verified with a
bump test, and recalibrated if necessary.
• Products may contain materials that are regulated for
transportation under domestic and international
dangerous goods regulations. Return product in
compliance with appropriate dangerous goods
regulations. Contact freight carrier for further
instructions.
The detector contains either alkaline batteries or a lithium
polymer battery. Refer to the following warnings.
ce Warning
This instrument contains alkaline batteries. Do not mix
with the solid waste stream. Spent batteries must be
disposed of by a qualified recycler or hazardous materials
handler.
ce Warning
This instrument contains a lithium polymer battery.
Dispose of lithium cells immediately. Do not disassemble
and do not dispose of in fire. Do not mix with the solid
waste stream. Spent batteries should be disposed of by a
qualified recycler or hazardous materials handler.

GasAlertMicro 5/PID/IR
Quick Reference Guide
4
Informations de sécurité – À lire au préalable
Utilisez le détecteur dans le seul but indiqué dans ce mémento
et dans le manuel d'utilisation, sous peine de porter préjudice à
la protection assurée par le détecteur.
Le détecteur est un appareil de sécurité individuel. Il est de
votre responsabilité de réagir à l'alarme de manière appropriée.
Lisez les Mises en garde suivantes avant d'utiliser le détecteur.
a Mises en garde
•Avertissement : Le remplacement d'un composant de
l'appareil peut compromettre la sécurité intrinsèque du
détecteur.
• Attention : Pour des raisons de sécurité, cet appareil
doit être utilisé et entretenu par du personnel qualifié
uniquement. Lisez attentivement le manuel d'utilisation
avant d'utiliser l'appareil ou d'en assurer l'entretien et
assurez-vous d'en avoir bien compris les instructions.
• Chargez le détecteur avant sa première utilisation. BW
recommande de recharger le détecteur après chaque
journée d'utilisation.
• Chargez la batterie dès l'émission d'une alarme de
batterie faible.
• Lisez et respectez les avertissements donnés à la section
Remplacement des batteries et des piles, page 23.
• BW recommande de contrôler le capteur de gaz
combustibles à l'aide d'une concentration connue de
gaz d'étalonnage après toute exposition à des
contaminants/poisons (composés de soufre, vapeurs de
silicium, produits halogénés, etc.)
• Avant chaque utilisation quotidienne, BW recommande
d'effectuer un test fonctionnel des capteurs afin de
vérifier qu'ils réagissent bien aux gaz présents, en
exposant le détecteur à une concentration de gaz
supérieure aux seuils d'alarme. Vérifiez manuellement
que les alarmes sonore et visuelle sont activées.
Étalonnez l'appareil si les relevés ne sont pas
conformes aux limites spécifiées.
• Pour une mise en garde supplémentaire sur le test
fonctionnel en rapport avec la réglementation
européenne, reportez-vous à la page 15.
• Étalonnez le détecteur avant sa première utilisation,
puis de manière régulière, en fonction de l'utilisation et
de l'exposition du capteur aux poisons et autres
contaminants. Les capteurs doivent être étalonnés
régulièrement et au moins une fois tous les 180 jours
(6 mois).
• Veillez à effectuer l'étalonnage dans une zone sûre,
exempte de gaz dangereux, dans une atmosphère
contenant 20,9 % d'oxygène.
• Seul l'élément de détection de gaz combustibles de cet
appareil a fait l'objet d'une évaluation des performances
homologuée par CSA International.

5
GasAlertMicro 5/PID/IR
Informations de sécurité – À lire au préalable
• Le capteur de gaz combustibles est étalonné en usine
au méthane, à une concentration de 50 % de la LIE. Si la
surveillance porte sur un autre gaz combustible dans la
plage % LIE, étalonnez le capteur en utilisant le gaz
approprié.
• Attention : Des valeurs LIE hors échelle élevées peuvent
indiquer la présence d'une concentration explosive.
• Protégez le capteur de gaz combustibles contre toute
exposition aux composés de plomb, aux silicones et
aux hydrocarbures chlorés. Bien que certaines vapeurs
organiques (comme l'essence au plomb ou les
hydrocarbures halogénés) puissent neutraliser
provisoirement les performances du capteur, dans la
plupart des cas, le capteur retrouvera son
fonctionnement normal après étalonnage.
• Cet appareil est destiné uniquement à une utilisation
dans des atmosphères potentiellement explosives, dans
lesquelles la concentration d'oxygène ne dépasse pas
20,9 % (v/v). Les atmosphères appauvries en oxygène
(<10 % v/v) peuvent inhiber certaines sorties du capteur.
• Toute mesure en rapide augmentation suivie d'une
diminution ou d'une mesure fantaisiste peut indiquer
une concentration de gaz au-delà de la limite d'échelle
supérieure, risquant donc d'être dangereuse.
• L'exposition prolongée du GasAlertMicro 5,
GasAlertMicro 5 PID ou GasAlertMicro 5 IR à certaines
concentrations de gaz combustibles et d'air peut
fortement solliciter l'élément du détecteur et nuire
gravement à ses performances. En cas d'alarme suite à
une forte concentration de gaz combustible, il convient
d'effectuer un réétalonnage, voire de remplacer le
capteur si nécessaire.
• Le module de pompe BW (M5-PUMP) est certifié pour
les modèles GasAlertMicro 5, GasAlertMicro 5 PID et
GasAlertMicro 5 IR uniquement.
• Protégez le capteur à photo-ionisation (PID) des
expositions aux vapeurs de silicium.
• Pour garantir un étalonnage précis des capteurs d'O3 et
de ClO2 placés en position toxique 2 du détecteur,
employez un seul capuchon d'étalonnage monogaz.
• Remplacez les capteurs uniquement en zone sûre et non
dangereuse, dans une atmosphère exempte de gaz
dangereux et contenant 20,9 % d'oxygène.
•Avertissement : La batterie (M5-BAT08) est constituée
d'une pile au lithium qui pourrait présenter un risque
d'incendie ou de brûlure chimique en cas de mauvaise
utilisation. Ne pas la démonter ni la chauffer au-delà de
100 °C (212 °F) ou l'incinérer.

GasAlertMicro 5/PID/IR
Quick Reference Guide
6
•Avertissement : N'utilisez jamais d'autres piles au
lithium avec les détecteurs GasAlertMicro 5,
GasAlertMicro5 PID ou GasAlertMicro5 IR Toute autre
batterie pourrait provoquer un incendie et/ou une
explosion. Pour commander ou remplacer la batterie au
lithium M5-BAT07 ou M5IR-BAT08, contactez BW
Technologies by Honeywell.
•Avertissement : Les batteries au lithium polymère
exposées à une température supérieure à 130 °C
(266 °F) pendant plus de 10 minutes peuvent provoquer
un incendie et/ou une explosion.
• Mettez immédiatement au rebut les batteries au lithium
usagées. Veillez à ne jamais les démonter ou les jeter au
feu. Ne pas les mélanger aux autres déchets solides.
Les piles usagées doivent être éliminées par un centre
de recyclage agréé ou un centre de traitement des
matières dangereuses.
• Conservez les batteries au lithium hors de portée des
enfants.
• Avant d'utiliser des produits usuels à proximité des
capteurs, reportez-vous à la section Poisons et
contaminants des capteurs, page 5.
• Des concentrations élevées en certains gaz toxiques, tels
que H2S, peuvent avoir un effet néfaste sur le capteur
LIE. Cet effet, appelé inhibition, est généralement
temporaire, mais peut, dans des conditions extrêmes,
altérer la sensibilité du capteur LIE.
Après toute exposition à un gaz entraînant le
déclenchement d'une alarme des capteurs de gaz
toxiques, le capteur LIE devra subir un test fonctionnel
et être réétalonné si nécessaire.
• Les produits peuvent contenir des matériaux qui sont
réglementés pour le transport en vertu des règlements
nationaux et internationaux de marchandises
dangereuses. Retourner le produit conformément à la
réglementation sur les marchandises dangereuses
appropriées. Contactez transporteur pour plus
d'instructions.
Le détecteur contient des piles alcalines ou une batterie au
lithium polymère. Reportez-vous aux avertissements suivants.
Avertissement CE
Cet appareil contient des piles alcalines. Ne pas les
mélanger aux autres déchets solides. Les piles usagées
doivent être éliminées par un centre de recyclage agréé ou
un centre de traitement des matières dangereuses.
Avertissement CE
Cet appareil contient une batterie au lithium polymère.
Mettez immédiatement au rebut les batteries au lithium

7
GasAlertMicro 5/PID/IR
Sensor Poisons and Contaminants
usagées. Veillez à ne jamais les démonter ou les jeter au
feu. Ne pas les mélanger aux autres déchets solides. Les
piles usagées doivent être éliminées par un centre de
recyclage agréé ou par un centre de traitement des
matières dangereuses.
Sensor Poisons and Contaminants
Several cleaners, solvents, and lubricants can contaminate and
cause permanent damage to sensors. Before using cleaners,
solvents, and lubricants in close proximity to the detector
sensors, read and adhere to the following caution and table.
a Caution
Use only the following BW Technologies by Honeywell
recommended products and procedures:
• Use water based cleaners.
• Use non-alcohol based cleaners.
• Clean the exterior with a soft, damp cloth.
• Do not use soaps, polishes, or solvents.
The following table lists common products to avoid using
around sensors.
Cleaners and
Lubricants Silicones Aerosols
• Brake cleaners
• Lubricants
• Rust inhibitors
• Window and glass
cleaners
• Dishsoaps
• Citrus based
cleaners
• Alcohol based
cleaners
• Hand sanitizers
• Anionic detergents
• Methanol (fuels and
antifreezes)
• Silicone based
adhesives, sealants, and
gels
• Hand/body and
medicinal creams
containing silicone
• Tissues containing
silicone
• Mold releasing agents
• Polishes
• Bug
repellents
and sprays
• Lubricants
• Rust
inhibitors
• Window and
glass
cleaners

GasAlertMicro 5/PID/IR
Quick Reference Guide
8
Parts of the GasAlertMicro 5/PID/IR
Item Description
1 Liquid crystal display (LCD)
2 Pushbuttons
3 Audible alarms
4 Toxic 2 sensor
5Toxic 1/PID sensor (GasAlertMicro 5 PID), or
Toxic 1/IR (CO2) sensor (GasAlertMicro 5 IR)
6 Visual alarm indicators (LEDs)
7 LEL sensor
8 Oxygen sensor
9 Pushbuttons
10 Battery pack
11 Alligator clip

9
GasAlertMicro 5/PID/IR
Display Elements
Display Elements
Item Description
1 Alarm condition
2 Automatically span sensor
3 Gas cylinder
4 Gas identifier bars
5 Battery life indicator
6 Passcode lock
7 Data transmission
8 Clock
9 Stealth mode
10 Optional pump indicator
11 Datalog card indicator (optional)
12
Alarm condition (low, high, TWA, STEL, or
multi) or view TWA, STEL and peak (MAX)
gas exposures
13 Automatically zero sensor

GasAlertMicro 5/PID/IR
Quick Reference Guide
10
Button Connecting the Gas Cylinder to the Detector
Button Description
A• To activate the detector, press A.
• To deactivate the detector, press and hold
A until the countdown is complete.
G
• To increment the displayed value or scroll
up, press G.
• To enter the user option menu, press G
and H simultaneously and hold until the
countdown is complete.
• To clear the TWA, STEL, and peak (MAX)
gas exposure readings, press C and G
simultaneously and hold until the
countdown is complete.
• To view the date and time, alarm setpoints
(TWA, STEL, low, and high) of all sensors,
and the LEL correction factor (if
applicable), press G.
H
• To decrement the displayed value or scroll
down, press H.
• To initiate calibration and setting alarm
setpoints, press C and H simultaneously
and hold until the countdown is complete.
C• To view the TWA, STEL, and peak (MAX)
readings, press C.
• To acknowledge latched alarms, press C.

11
GasAlertMicro 5/PID/IR
Connecting the Gas Cylinder to the Detector
Single Gas Calibration Cap
a Caution
If an O3 or ClO2 sensor is located in the Toxic 2 sensor
position, a single gas calibration cap must be used to
ensure accurate calibration.
Only use the single gas calibration cap during the
calibration process.
To calibrate O3 and ClO2 sensors using the single gas
calibration cap, refer to the following procedures and
illustrations.
1. Insert the cap into the Toxic 2 sensor position on the
detector. Press firmly until the release tabs click.
2. Connect the calibration hose to the gas cylinder and
to the intake inlet on the cap.
Note
The arrow on the cap indicates the direction of gas
flow from intake to outtake.
Removing the Cap
Using your thumb, push forward against both the inlet and
outlet simultaneously to remove the cap from the detector.

GasAlertMicro 5/PID/IR
Quick Reference Guide
12
Pump
When using the pump module, attach it and the pump
accessories prior to activating the detector.
For more information on the pump, refer to the
GasAlertMicro 5/PID/IR User Manual.
a Warning
If the pump module is installed on the detector, the
following three things must occur during start-up. If any
one of the conditions below does not occur, discontinue
use of the detector and contact BW Technologies by
Honeywell immediately.
• The detector prompts for a pump test during start-up
• The pump module passes the pump test at start-up
when the pump inlet or sample chain inlet is blocked
• The J icon displays on the LCD
To ensure accurate gas detection, the sensors must be
calibrated immediately when the pump module is
replaced by the diffusion cap and vice versa.
When using the sample probe at -10°C to +0°C (14°F to
32°F), keep the sample probe in your hand.
a Caution
A demand flow regulator must be used to manually
calibrate the GasAlertMicro 5/PID/IR detector when the
pump module is installed.
The calibration cap is designed for use with the diffusion
cap only. It cannot be used with the pump module.
Identifying the Pump
There are two generations of pump. The best way to
differentiate the Generation 2 pump from the Generation 1
pump is the inline filter that is visible on the Generation 2 pump
on the left-hand side.
Each model of pump has different operating specifications.
Refer to Maximum Hose Length when Confined Space
Sampling on page 14.
*Note
Performance approved conditions
Generation 1: 116885-L3
(yellow) and 118933-L3
(black)
Generation 2: 130916-L3*
(yellow) and 130917-L3
(black)

13
GasAlertMicro 5/PID/IR
Pump
Pump Features
To replace the pump filter and pump nozzle for the Generation 2
pump, refer to Replacing the Pump Filter (Generation 2 Pump
only) on page 29 and Replacing the Pump Nozzle (Generation
2 Pump only) on page 30.
To replace the pump filter for the Generation 1 pump, refer to
the GasAlertMicro 5/PID/IR User Manual. The pump nozzle
cannot be replaced.
Pump Alarm
The external pump draws air over the sensors continually. If the
pump stops operating or becomes blocked, the detector
activates the pump alarm and the pump alarm latches. The
following screens display.
a Caution
Ensure the blockage is cleared before pressing C to
acknowledge the latched pump alarm.
When C is pressed, the detector automatically launches a
pump test to reset the pump module.
If the pump test is successful, the detector returns to normal
operation, otherwise the pump alarm continues. If the pump
alarm persists, refer to the Pump Operation Troubleshooting in
the guide or in the Pump Operation section in Troubleshooting
in the GasAlertMicro 5/PID/IR User Manual.
Confined Space Sampling
To measure hazardous gas in a confined space, refer to the
following illustration and steps 1-5.
The detector and pump module can also be used with a
sintered filter.

GasAlertMicro 5/PID/IR
Quick Reference Guide
14
a Warning
To measure hazardous gas in a confined space, the
sample probe must be used with the pump module.
a Caution
To prevent the teflon lining inside the Tygon tubing from
causing a blockage when connecting it to the sample
probe, the end of the tubing must be flared. Refer to
steps 2 and 3.
1. Attach the pump connector end of the teflon-lined
Tygon tubing to the pump module.
2. Gently insert needle nose pliers into the other end of
the teflon-lined Tygon tubing. Using a circular motion,
flare the end of the tubing.
3. Connect the flared end of the tubing to the sample
probe. Ensure the teflon-lining does not separate
from the Tygon tubing, as it will block the tube and
generate a pump alarm.
4. Activate the detector. Ensure all connections are
secure before sampling.
5. Insert the sample probe into the confined space.
a Warning
Depending upon the length of the tubing and the type of
gas in the confined space, allow a minimum of 3 seconds
per foot of tubing to ensure the readings stabilize before
entering the area.
Example: 10 ft. = 30 seconds
Maximum Hose Length when Confined Space Sampling
Maximum sample hose length is dependent on pump model,
operating temperature, and sampling accessory. Refer to the
tables below.
a Caution
Maximum sample hose length is dependent on an inner
1/16” hose diameter.
Table 1. Generation 1 Pump
a Warning
When using the sample probe at -10°C to +0°C (14°F to
32°F), keep the sample probe in your hand.
Table 2. Generation 2 Pump
-10°C to +0°C
(14°F to 32°F)
0°C to 50°C
(32°F to 122°F)
Sintered filter 3 m (10 ft.) 9.1 m (30 ft.)
Sample Probe 3 m (10 ft.) 3 m (10 ft.)
-20°C to 50°C(-4°F to 122°F)
Sintered filter 20 m (66 ft.)
Sample Probe 3 m (10 ft.)

15
GasAlertMicro 5/PID/IR
Bump Test
Bump Test
A bump test is the process of applying a small amount of test
gas to force the detector into alarm. A bump test should be
performed regularly to confirm the sensors are responding
correctly to gas, and that the audible, visual, and vibrator
alarms activate during an alarm condition. Calibrate if the
readings are not within specified limits.
Performing a Bump Test
a Caution
BW recommends to bump test the sensors before each
day’s use to confirm their ability to respond to gas by
exposing the sensors to a gas concentration that exceeds
the alarm setpoints.
Should the user wish to comply with European
Regulations, a bump test must be completed before each
day’s use. Refer to EN 60079-29-2.
To perform a manual bump test refer to Connecting the Gas
Cylinder to the Detector on page 10 and the following steps 1-6.
Follow this procedure when Bump Daily is enabled.
Note
If performing a bump test on a pump unit, connect the
calibration hose directly to the pump module.
1. Connect the calibration hose to the 0.5l/min regulator
on the gas cylinder.
Note
Only use the calibration cap for bump tests and
calibrations.
2. Connect the calibration hose to the intake inlet on the
calibration cap. Arrows on the calibration cap indicate
the direction of gas flow.
3. Attach the calibration cap and tighten the knob.
Refer to Connecting the Gas Cylinder to the Detector
on page 10.
Note
Ensure the knob is securely fastened before applying
gas. Do not overtighten the calibration cap. Ensure
strong air currents are kept away from the exhaust
side of the calibration cap, as this can affect the bump
test accuracy.
4. Apply gas. Verify the visual, audible, and vibrator
alarms activate.
5. Close the regulator and remove the calibration cap
from the detector. The detector will temporarily
remain in alarm until the gas clears from the sensors.
6. Disconnect the calibration hose from the cap and
regulator.

16
GasAlertMicro 5/PID/IR
Quick Reference Guide
Calibration
Calibrate only in a safe area in an
atmosphere of 20.9% oxygen.
1. Activate the detector. To enter calibration,
press and hold C and H
simultaneously. The detector beeps and
flashes to the corresponding countdown.
The LCD then displays Starting
calibration.
2. flashes while the detector
zeros all of the sensors (except CO2) and
calibrates the oxygen sensor. If a sensor
fails to auto zero, that sensor will bypass
the span.
If calibrating a GasAlertMicro 5 or
GasAlertMicro 5 PID, proceed to step #4.
Step #3 for Micro 5 IR Only
3. The Zero-CO2? screen displays. Press
C to zero the CO2 sensor, or press A to
bypass.
If C is pressed to zero the CO2 sensor,
the following screens display:
- Apply CO2 zero gas now (nitrogen
must be used to zero the CO2 sensor).
4. - The Auto-Zero CO2 screen displays,
and flashes.
5. The following three screens display:
- Apply span gas now to calibrate
- or press C to select sensor(s)
- or press A to skip calibration
If none of the buttons are pressed,
proceed to step #6.
If C is pressed, proceed to step #5.
If A is pressed, proceed to the end of
step #7.
6. Select which sensor to span. Press G
or H to scroll to the required sensor
and then press C to select. Sensors
must be spanned in the following order:
- Exotics (NH3, ClO2, O3, and CO2)
- Single gases
- Quad gases (H2S, CO, O2 and LEL).
7. Attach the calibration cap and apply gas
at a flow rate of 500 ml/min.
K flashes while the detector determines
which gas is being applied.
After 30 seconds, flashes and
a countdown displays while the detector
completes the span.