GasAlertMicro
H2S, CO, O2, SO2, Combustibles
1, 2, 3, and 4 Gas Detectors
Quick Reference Guide
BW Technologies LP (BW) warrants this 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
The obligations set forth in this warranty are conditional on:
THE BUYER AGREES THAT THIS WARRANTY IS THE BUYER’S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. BW 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 OR RELIANCE OR ANY OTHER THEORY.
Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion, or limitation of incidental or
consequential 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.
of unapproved parts on the product; or
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
c) the right of BW to require that the buyer provide proof of purchase such as th e original invoice, bill of sale, or packing slip to
establish that the product is within the warranty period.
Limited Warranty & Limitation of Liability
Contacting BW Technologies
USA: 1-888-749-8878 Canada: 1-800-663-4164
Europe: +44 (0) 1869 233004 Other countries: +1-403-248-9226
Email us at:
Visit BW Technologies’ web site at: www.gasmonitors.com
info@bwtnet.com
GasAlertMicro
Introduction
This quick reference guide provides basic information for the
GasAlertMicro. Refer to the user manual on the accompanying
CD-ROM for complete operating instructions. The
GasAlertMicro gas detector (“the detector”) warns of hazardous
gas at levels above user-selectable alarm setpoints.
The detector is a personal safety device. It is your responsibility
to respond properly to the alarm.
Note
The detector is shipped with English as the displayed
language. The Portuguese, Spanish, German, and
French guides have their screenshots displayed in the
corresponding language.
Safety Information - Read First
Use the detector only as specified in this guide, otherwise
the protection provided by the detector may be impaired.
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.
⇒ Calibrate the detector before first-time use and
then on a regular schedule, depending on use
and sensor exposure to poisons and
contaminants. BW recommends at least once
every 180 days* (6 months).
* See Specifications
1
GasAlertMicro
Quick Reference Guide
⇒ 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 high
alarm setpoints. Manually verify that the
audible and visual alarms are activated.
Calibrate if the readings are not within the
specified limits.
⇒ It is recommended that the combustible
sensor be checked with a known
concentration of calibration gas after any
known exposure to catalyst
contaminants/poisons (sulfur compounds,
silicon vapors, halogenated compounds, etc.).
⇒ Only the combustible gas detection portion of
this instrument has been assessed for
performance.
⇒ 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 readings may indicate
an explosive concentration.
⇒ Electromagnetic interference may cause
incorrect operation under certain
circumstances.
2
⇒ 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.
⇒ Any rapid up-scaling reading followed by a
declining or erratic reading may indicate a gas
concentration beyond upper scale limit, which
may be hazardous.
⇒ Do not change or charge batteries in a
hazardous location. Doing so will impair the
Intrinsic Safety of the unit and may lead to fire
or explosion.
⇒ For use only in potentially explosive
atmospheres where oxygen concentrations do
not exceed 20.9% (v/v).
⇒ Extended exposure of the GasAlertMicro to
certain concentrations of combustible gases
and air may stress a detector element, which
can seriously affect its performance. If an
alarm occurs due to high concentration of
combustible gases, recalibration should be
performed, or if needed, the sensor replaced.
Parts of the GasAlertMicro
Parts of the GasAlertMicro
GasAlertMicro
Item Description
1 Audible alarm
2 Visual alarm bars
3 Sensors
4 Pushbuttons
5 Display
6 Battery holder
7 Datalogger (optional)
8 Alligator clip
3
GasAlertMicro
Quick Reference Guide
Display Elements
4
Item Description
1
2
3
4
5
6
7
8
9
10
11
12
13
Alarm condition
Battery life indicator
Button indicator
Clock
Gas identifier bars
Optional datalogger card indicator
Automatically zero sensor
Gas cylinder
Automatically span sensor
Pass code lock
Real time calendar
Alarm condition
Future use
GasAlertMicro
Pushbuttons
Pushbuttons
Pushbutton Description
• To turn on the detector press A.
A
• To turn off the detector, press A and hold for 5 seconds.
• To activate or deactivate the confidence beep, press and hold C then press A at startup.
• To increment the displayed value press G.
G
• To enter the user options menu, press G and H simultaneously and hold for 5 seconds.
• To clear the TWA, STEL, and maximum gas exposure readings, press C and G
simultaneously.
• To decrement the displayed value press H.
H
C
• To initiate calibration and setting alarm setpoints, press C and H simultaneously and hold for
5 seconds.
• To view the TWA, STEL, and maximum (MAX) hold readings, press C.
• To acknowledge latched alarms press C.
5
GasAlertMicro
Quick Reference Guide
Installing the Batteries
Activating the Detector
To activate the detector, press A in a normal atmosphere (20.9% oxygen).
Deactivating the Detector
To turn off the detector, press A and hold for 5 seconds.
6
Calibration
Procedure Display Procedure Display
1. In a clean atmosphere, press C
and H simultaneously and hold for
5 seconds. The detector beeps
4 times. The detector then beeps
once more signifying that
calibration has started.
2. The display flashes N while
the detector zeroes the H
and combustible sensors. The
detector beeps twice at the end of
the auto zero stage.
S, CO,
2
4. Press H or G to change the alarm
setpoint. Press A to skip to the
next setpoint. Press
The detector beeps four times at
the end of the alarm setpoint stage.
C to save.
5. Press H or G to change the next
calibration due date. Press C to
save. The detector beeps five times
indicating that calibration is
complete.
GasAlertMicro
Calibration
3. When the display flashes K,
connect the calibration bottle and
apply gas at a flow rate of 250 to
500 ml/min. The detector beeps
three times at the end of the span
stage. Remove the calibration gas.
Note
The calibration cap should only be used during the
calibration process.
7
GasAlertMicro
Quick Reference Guide
Attach the Gas Cylinder to the Detector
8
Alarms
The following table lists the numerous alarms of the detector.
Alarm Display Alarm Display
Low Alarm
• Slow tone and flash
• L and target gas bar flash
• Vibrator alarm activates
High Alarm
• Fast tone and flash
• L and target gas bar flash
• Vibrator alarm activates
STEL Alarm
• Fast tone and flash
• L and target gas bar flash
• Vibrator alarm activates
Multi-Gas Alarm
• Alternating low and high alarm
tone and flash
• L and target gas bars flash
• Vibrator alarm activates
TWA Alarm
• Slow tone and flash
• L and target gas bar flash
• Vibrator alarm activates
Over Range Alarm
(Over Level Exposure)
• Fast tone and flash
• L and target gas bar flash
• Vibrator alarm activates
GasAlertMicro
Alarms
9
GasAlertMicro
Quick Reference Guide
Alarm Display Alarm Display
Sensor Alarm
• Slow tone and flash
• L and gas bar(s) flash
• Vibrator alarm activates
Low Battery Alarm
(Confidence Beep disabled)
• 1 beep and 1 flash every
10 seconds
• LOW flashes
Confidence Beep
• 2 fast beeps every 15 seconds.
10
Automatic Shutdown Alarm
• 8 beeps and flashes
• LOW displays periodically
• Vibrator alarm temporarily
activates
Normal Shutdown
• 4 beeps and flashes
• Vibrator alarm temporarily
activates
Note
Alarms can be set to be latching or non-latching. To
confirm this setting, go to the latching alarm option in
the user options menu.
User Options Menu
To access the user options, press G and H simultaneously.
To choose the desired option, press
select the option. The following are the available user options:
• Finish options: exits the user options menu;
• Latching alarms: alarm persists until the user
acknowledges it;
• Safe display: LCD displays SAFE when no gas is
measured;
• Combustible sensor measuring selection: measures and
displays in either 0-100% LEL or 0-5.0% vol.;
• Language selection: LCD displays in English, French,
German, Spanish, or Portuguese;
• Sensor option: enable/disable a sensor;
• Pass code protection: prevents access to the user
options menu and the calibration menu;
• Automatic oxygen calibration: enables oxygen calibration
at startup;
H or G. Press C to
GasAlertMicro
User Options Menu
• Span concentration values: change each sensor’s span
concentration value for calibration;
• STEL period: set the STEL calculation period between
5-15 minutes;
• Stealth mode: disables the audible and visual alarms;
• Automatic backlight: disables the automatic backlight
regardless of the lighting situation;
• MicroBatt: acknowledges that the detector is using the
GA MicroBatt;
• Bump due: enables a note to display upon startup if the
detector has not been bumped within the last 24 hours;
• Adjust clock: adjusts the real-time clock and calendar
(datalogger model only);
• Logger rate: adjust the rate between 1-127 seconds
(datalogger model only).
Note
To quickly scroll through the options press and hold H
or G.
11
GasAlertMicro
Quick Reference Guide
Maintenance
To keep the detector in good operating condition, perform
the following basic maintenance as required:
• Calibrate, bump check, and inspect the detector at
regular intervals.
• Keep an operations log of all maintenance, bump
checks, calibrations, and alarm events.
• Clean the exterior with a soft damp cloth. Do not use
solvents, soaps, or polishes.
• Do not immerse the detector in liquids.
12
Replacing a Sensor or Sensor Filter
For full instructions on how to replace a sensor/sensor filter,
please refer to the user manual.
Item Description
1 Front shell
2 Triple sensor filter
3 Oxygen sensor
4 LEL sensor
5 CO/H2S sensor
6 Sensor locator
7 PCB assembly
8 Rear shell
9 Alligator clip
10 Machine screw (1)
11 Thread cutting screws (6)
GasAlertMicro
Maintenance
13
GasAlertMicro
Quick Reference Guide
Specifications
Instrument dimensions: 6 x 10 x 3.3 cm (2.4 x 4.0 x 1.3 in.)
Weight: 211 g (7.4 oz.)
Operating and storage conditions:
Temperature: -20°C to +50°C (-4ºF to +122ºF)
Humidity: 5% to 95% relative humidity (non-condensing)
Pressure: 95 to 110 kPa
Alarm setpoints: May vary by region and are user-settable
Detection range:
CO: 0-500 ppm in 1 ppm increments
H
S, SO2: 0-100 ppm in 1 ppm increments
2
O
: 0-30% in 0.1% increments
2
Combustibles: field settable for:
0-100% LEL in 1% LEL increments or
0-5.0% v/v methane
Sensor type:
H
S/CO: Twin plug-in electrochemical cell
2
O
, SO2, H2S, CO: Single plug-in electrochemical cell
2
Combustibles: Plug-in catalytic bead
measuring principle: Capillary controlled concentration
O
2
sensor
14
Alarm conditions: TWA alarm, STEL alarm, low alarm, high
alarm, multi-gas alarm, sensor alarm, low battery alarm,
confidence beep, automatic shutdown alarm
Audible alarm: 95 dB at 1 ft. (0.3 m) variable pulsed dual
beepers
Visual alarm: Dual red light-emitting diodes (LED)
Display: Alphanumeric liquid crystal display (LCD)
Backlight: Automatically activates whenever there is
insufficient light to view the display and during alarm conditions
Self-test: Initiated at activation
Calibration: Automatic zero and automatic span
Oxygen sensor: Automatic span on activation (selectable)
User field options: Confidence beep, latching low and high
alarms, pass code protection, enable/display SAFE display
mode, combustible sensor measurement (0-100% LEL or 0-
5.0% v/v methane, sensor disable, set calibration due date,
TWA and STEL, stealth mode, language selection,
enable/disable automatic oxygen calibration, set span
concentration values, set STEL calculation period,
enable/disable automatic backlight, and distinguish use of the
GA MicroBatt battery
Datalogger models only: adjust clock calendar, set sampling
rate, and enable/disable bump due note
Battery operating time:
2 alkaline cells: 16-18 hours
2 rechargeable NiMH cells: 14-16 hours (Quest Platinum
HGAAC1800G)
Approved batteries:
North America
Approved batteries for product (standards EN50020, UL913,
C22.2 No. 157)
Alkaline: Temperature code
Duracell MN1500 T3C (139.8°C)
Energizer E91 T3B (163°C)
NiMH rechargeable:
Quest Platinum HGAAC1800G T2 (211.4°C)
Quest HG1600AACS T3 (199°C)
Energizer NH15 1700 mAh T2D (205°C)
Maha Powerex 1700 mAh MH-AA170 T3 (192°C)
Maha Powerex 1800 mAh MH-AA180 T2D (201.1°C)
Yuasa Delta 1300 mAh DHA1400AA T2D (209°C)
Yuasa Delta 1500 mAh DHA1600AAC T2D (204.4°C)
Uniross 1300 mAh T3 (198°C)
Uniross 1700 mAh T3 (186.8°C)
GA MicroBatt:
GAMIC-BAT-03 T4 (120°C)
GAMIC-BAT2-03 T4
Worst case temperature code:
Alkaline: 163°C
NiMH: 212°C
GA MicroBatt: 120°C
Ambient: -20°C ≤ Ta ≤ +50°C
Europe
Approved batteries for product (standards EN50020)
Alkaline: Temperature code
Duracell MN1500 T4 (129.8°C)
NiMH rechargeable:
Quest HG1600AACS T3 (189°C)
Ambient: -20°C ≤ Ta ≤ +40°C
GA MicroBatt:
GAMIC-BAT-03 T4 (120°C)
GAMIC-BAT2-03 T4
Ambient: -20°C ≤ Ta ≤ +50°C
Battery charger (optional): Quest™ Q2 4-port rapid NiMH
battery charger with country-specific mains adapter
First-time charge: 1-4 hours per battery
Normal charge: 1 hour per battery
Warranty: Full 2 year warranty including all sensors
GasAlertMicro
Specifications
15
GasAlertMicro
Quick Reference Guide
Approvals: Approved by CSA to both U.S. and Canadian
Standards
Approved: Class I, Division 1, Group A, B, C, and D;
Class I, Zone 0, Group IIC
Standards: CAN/CSA C22.2 No. 157 and C22.2 152
ANSI/UL – 913 and ANSI/ISA –S12.13 Part 1
CE (LCIE): EEx ia IIC ATEX g II 1 G
ATEX: LCIE 03 ATEX 6091 X
BAM 04 ATEX 0002 X
* It is recommended that BAM certified detectors be
calibrated once every 90 days.
IECEx
ABS Type Approved: VA-348-169-X
O
measuring function: BAM/ZBA/008/04
2
16
This equipment has been tested and found to comply with the
limits for a Class B digital device, pursuant to Part 15 of the
FCC Rules and ICES-003 Canadian EMI requirements. These
limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if
not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of
the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and
receiver.
• Connect the equipment into an outlet on a circuit
different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician
for help.
D5554/6 English
iERP: 118237
© 2005 BW Technologies. All rights reserved. Printed in Canada.
All product names are trademarks of their respective companies.
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