Honeywell BW GasAlertMicro 5 User manual

User Manual
1, 2, 3, 4, 5 Gas Detector
50105442-036 EN-L
English
©BW Technologies 2017. All rights reserved.
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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
c) the right of BW to require that the buyer provide proof of purchase such as the original invoice, bill of sale or packing slip to establish that the product is within
the warranty period.
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 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.
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i
Table of Contents
Title Page
Introduction ......................................................................................................................................................................... 1
Gases Monitored ............................................................................................................................................................. 2
Safety Information - Read First.......................................................................................................................................... 2
aCautions .......................................................................................................................................................................... 3
Sensor Poisons and Contaminants .................................................................................................................................. 6
Getting Started .................................................................................................................................................................... 8
Parts of the GasAlertMicro 5/PID/IR .................................................................................................................................. 9
Screen Elements ............................................................................................................................................................... 10
Buttons .............................................................................................................................................................................. 11
Activating the
Detector ............................................................................................................................................................................. 12
Self-Tests....................................................................................................................................................................... 12
Battery Test .............................................................................................................................................................. 12
Datalogging (Optional).............................................................................................................................................. 13
Pump Test ................................................................................................................................................................ 15
Due-Lock Enabled .................................................................................................................................................... 17
Force Calibration Enabled ........................................................................................................................................ 17
Bump Daily Enabled ................................................................................................................................................. 18
Self-Test Pass ............................................................................................................................................................... 19
Self Test Fail.................................................................................................................................................................. 19
Battery Test ................................................................................................................................................................... 20
Datalogger Operation (Optional).................................................................................................................................... 20
Deactivating the Detector................................................................................................................................................. 21
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GasAlertMicro 5/PID/IR
User Manual
Title Page
ii
User Options Menu ........................................................................................................................................................... 21
Exit User Options Menu ................................................................................................................................................. 22
Options Menu................................................................................................................................................................. 22
Backlight ................................................................................................................................................................... 23
Confidence Beep ...................................................................................................................................................... 23
Due-Lock .................................................................................................................................................................. 23
Latched Alarms......................................................................................................................................................... 24
Passcode Protect...................................................................................................................................................... 24
Safe Display.............................................................................................................................................................. 25
Sensor Configuration ..................................................................................................................................................... 25
Sensor Enable/Disable ............................................................................................................................................. 26
Span Gas Value........................................................................................................................................................ 27
STEL Period ............................................................................................................................................................. 28
TWA Method ............................................................................................................................................................. 28
Resolution................................................................................................................................................................. 29
%Vol CO2 (CO2 Sensors Only)................................................................................................................................. 29
%Vol CH4 (LEL Sensors Only).................................................................................................................................. 30
Correction Factor (CF) .............................................................................................................................................. 30
Logger Option ................................................................................................................................................................ 33
Clock Option .................................................................................................................................................................. 33
Language Selection ....................................................................................................................................................... 34
Tech Mode ..................................................................................................................................................................... 35
Sensors..................................................................................................................................................................... 36
Initialize ..................................................................................................................................................................... 37
Force Calibration ...................................................................................................................................................... 37
Bump Daily ............................................................................................................................................................... 38
Stealth Mode............................................................................................................................................................. 38
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iii
GasAlertMicro 5/PID/IR
User Manual
Title Page
Sleep Mode............................................................................................................................................................... 39
Alarms ................................................................................................................................................................................ 40
Gas Exposures Computed............................................................................................................................................. 43
Viewing Gas Exposures................................................................................................................................................. 43
Clearing Gas Exposures ................................................................................................................................................ 44
Gas Alarm Setpoints ...................................................................................................................................................... 44
Viewing the Alarm Setpoints .......................................................................................................................................... 44
Resetting Gas Alarm Setpoints...................................................................................................................................... 45
Stopping a Gas Alarm .................................................................................................................................................... 46
Sensor Alarm ................................................................................................................................................................. 46
Pump Alarm ................................................................................................................................................................... 46
Low Battery Alarm.......................................................................................................................................................... 47
Automatic Deactivation Alarm ........................................................................................................................................ 47
Bump Test.......................................................................................................................................................................... 47
Performing a Bump Test ................................................................................................................................................ 47
Calibration and Setting Alarm Setpoints ........................................................................................................................ 48
Guidelines ...................................................................................................................................................................... 48
Diagnostics Testing........................................................................................................................................................ 49
Applying Gas to the Sensors ......................................................................................................................................... 50
Single Gas Calibration Cap ...................................................................................................................................... 50
Calibration Procedure .................................................................................................................................................... 51
Start Calibration ........................................................................................................................................................ 52
Auto Zero and Oxygen (O2) Sensor Calibration ....................................................................................................... 52
Zero CO2 (GasAlertMicro 5 IR only) ......................................................................................................................... 52
Passcode Protect Activated ...................................................................................................................................... 53
Auto Span ................................................................................................................................................................. 54
Successful Span ....................................................................................................................................................... 56
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GasAlertMicro 5/PID/IR
User Manual
Title Page
iv
Setting the Calibration Due Date .............................................................................................................................. 57
Alarm Setpoints ........................................................................................................................................................ 58
Setting the Remaining Alarm Setpoints .................................................................................................................... 60
Finish Calibration ...................................................................................................................................................... 60
Verification ................................................................................................................................................................ 61
Unsuccessful Span ................................................................................................................................................... 61
Pump .................................................................................................................................................................................. 64
....................................................................................................................................................................................... 64
Identifying the Pump ...................................................................................................................................................... 64
Generation 1: 116885-L3 (yellow) and 118933-L3 (black)........................................................................................ 64
Generation 2: 130916-L3 (yellow) and 130917-L3 (black)........................................................................................ 65
Installing the Pump Module ............................................................................................................................................. 66
Replacing the Pump Filter (Generation 2 Pump) ........................................................................................................... 67
Replacing the Pump Nozzle (Generation 2 Pump) ........................................................................................................ 68
Attaching the Auxiliary Filter .......................................................................................................................................... 68
Confined Space Sampling ............................................................................................................................................. 70
Maximum Hose Length when Confined Space Sampling......................................................................................... 71
Datalogger ......................................................................................................................................................................... 72
MMC/SD Card Compatibility............................................................................................................................................. 72
Inserting the MMC/SD Card ........................................................................................................................................... 72
MMC/SD Card Troubleshooting ....................................................................................................................................... 73
Restoring Datalog Files.................................................................................................................................................. 74
Reformatting the MMC/SD Card .................................................................................................................................... 75
Import Datalogs to Fleet Manager II ................................................................................................................................ 76
Minimum PC Requirements ........................................................................................................................................... 76
Importing from MicroDock II to Fleet Manager II............................................................................................................ 76
Import to Fleet Manager II Using a Card Reader........................................................................................................... 76
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v
GasAlertMicro 5/PID/IR
User Manual
Title Page
View Datalog Files in Spreadsheets................................................................................................................................ 77
Example of a Datalog Spreadsheet .......................................................................................................................... 78
Maintenance ...................................................................................................................................................................... 81
Battery Cautions ........................................................................................................................................................... 81
Charging the Battery ...................................................................................................................................................... 81
Replacing the Alkaline Batteries .................................................................................................................................... 82
Replacing the Lithium Battery Pack ............................................................................................................................... 83
Replacing a Sensor or Sensor Filter .............................................................................................................................. 83
Photoionization Detector (PID) ...................................................................................................................................... 85
Clean or Replace the Lamp ...................................................................................................................................... 85
Replace the Lamp..................................................................................................................................................... 86
Replace the Electrode Stack .................................................................................................................................... 87
WEEE Battery Directive ................................................................................................................................................. 87
Removal and Disposal of the Battery Pack............................................................................................................... 87
Removal and Disposal of the Coin Cell .................................................................................................................... 87
Troubleshooting................................................................................................................................................................ 89
Replacement Parts and Accessories .............................................................................................................................. 95
Specifications.................................................................................................................................................................... 97
General Specifications for Datalogger Units ................................................................................................................ 100
GasAlertMicro 5/PID/IR Downloadable Datalogger ..................................................................................................... 101
PID Correction Factor (CF) Library................................................................................................................................ 102
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vii
List of Figures
Figure Title Page
1. Parts of the GasAlertMicro 5/PID/IR...................................................................................................................... 9
2. Screen Elements ................................................................................................................................................. 10
3. Applying Gas to the Sensors ............................................................................................................................... 50
4. Single Gas Calibration Cap ................................................................................................................................. 51
5. Removing the Single Gas Calibration Cap.......................................................................................................... 51
6. Installing the Pump Module ................................................................................................................................. 66
7. Replacing the Pump Filter (Generation 2 Pump)................................................................................................. 67
8. Replacing the Pump Nozzle ................................................................................................................................ 68
9. Attaching the Auxiliary Filter ............................................................................................................................... 68
10. Attaching the Filter Cord..................................................................................................................................... 69
11. Attaching the Sample Probe................................................................................................................................ 70
12. Inserting/Removing the MMC/SD Card ............................................................................................................... 73
13. Replacing the Alkaline Batteries.......................................................................................................................... 82
14. Replacing the Lithium Battery Pack .................................................................................................................... 83
15. Replacing a Sensor or Sensor Filter ................................................................................................................... 84
16. Parts of the PID ................................................................................................................................................... 86
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ix
List of Tables
Table Title Page
1. Gases Monitored ................................................................................................................................................... 2
2. Sensor Poisons and Contaminants ....................................................................................................................... 6
3. International Symbols ............................................................................................................................................ 7
4. Parts of the GasAlertMicro 5/PID/IR...................................................................................................................... 9
5. Screen Elements ................................................................................................................................................. 10
6. Button .................................................................................................................................................................. 11
7. Alarms ................................................................................................................................................................. 40
8. Computed Gas Exposures .................................................................................................................................. 43
9. Gas Alarm Setpoints ........................................................................................................................................... 44
10. OSHA Sample Factory Alarm Setpoints.............................................................................................................. 45
11. Applying Gas to the Sensors ............................................................................................................................... 50
12. Single Gas Calibration Cap ................................................................................................................................. 51
13. Time Required to Span ....................................................................................................................................... 55
14. Installing the Pump Module ................................................................................................................................. 66
15. Generation 1 Pump Maximum Hose Length ....................................................................................................... 71
16. Generation 2 Pump Maximum Hose Length ....................................................................................................... 71
17. Datalog Spreadsheet Example............................................................................................................................ 78
18. Datalog Status Codes ......................................................................................................................................... 79
19. Datalog Gas and Correction Factor Sensor Codes............................................................................................. 80
20. Replacing the Alkaline Batteries.......................................................................................................................... 82
21. Replacing a Sensor or Sensor Filter .................................................................................................................. 85
22. Parts of the PID sensor ....................................................................................................................................... 85
23. Troubleshooting................................................................................................................................................... 89
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x
GasAlertMicro 5/PID/IR
User Manual
24. Replacement Parts and Accessories .................................................................................................................. 95
25. PID Corrections Factor (CF) Library.................................................................................................................. 102
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1
GasAlertMicro 5/PID/IR
Introduction
GasAlertMicro 5/PID/IR
ISO 9001
Introduction
a Warning
To ensure personal safety, read the Safety Information -
Read First and Cautions before using the detector.
The GasAlertMicro 5, GasAlertMicro 5 PID, and GasAlertMicro 5 IR
gas detectors (“the detector”) warn of hazardous gas at levels above
user-defined alarm setpoints.
The detector is a personal safety device. It is your responsibility to
respond properly to the alarm.
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.
Refer to Gases Monitored prior to operating the detector.
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GasAlertMicro 5/PID/IR
User Manual
2
Gases Monitored
The following table lists the gases that are monitored by the detector.
Table 1. Gases Monitored
CAUTION: FOR SAFETY REASONS, THIS EQUIPMENT MUST BE
OPERATED AND SERVICED BY QUALIFIED PERSONNEL ONLY.
READ AND UNDERSTAND THIS USER MANUAL COMPLETELY
BEFORE OPERATING AND SERVICING.
Safety Information - Read First
Use the detector only as specified in this user manual, otherwise the
protection provided by the detector may be impaired.
International symbols used on the detector and in this user manual are
defined in Table 3.
Read the Cautions on the following pages before using the detector.
ec Warning
This instrument contains batteries. Do not mix with the
solid waste stream. Spent batteries must be disposed of
by a qualified recycler or hazardous materials handler.
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 must be
disposed of by a qualified recycler or hazardous
materials handler.
Gas Detected Unit of Measure
Oxygen (O2)% volume
Combustible gases (LEL)
a) percent of lower explosive
limit (%LEL)
b) percent by volume
methane 0-5.0% v/v
Carbon monoxide (CO) parts per million (ppm)
Hydrogen sulfide (H2S) parts per million (ppm)
Phosphine (PH3)parts per million (ppm)
Sulfur oxide (SO2)parts per million (ppm)
Chlorine (Cl2)parts per million (ppm)
Ammonia (NH3)parts per million (ppm)
Nitrogen dioxide (NO2)parts per million (ppm)
Hydrogen cyanide (HCN) parts per million (ppm)
Chlorine dioxide (ClO2)parts per million (ppm)
Ozone (O3)parts per million (ppm)
Volatile organic compounds
(VOC) parts per million (ppm)
Carbon dioxide (CO2) parts per million or %vol CO2
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3
GasAlertMicro 5/PID/IR
aCautions
aCautions
•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 this user manual completely before
operating or servicing.
• Do not use the detector if it is damaged. Inspect the
detector before using. Look for cracks and/or missing parts.
• If the detector is damaged or parts are missing, contact BW
Technologies by Honeywell immediately.
• Use only sensor(s) that are specifically designed for the
GasAlertMicro 5/PID/IR detectors. Refer to Replacement
Parts and Accessories.
• Calibrate the detector before first-time use and then on a
regular schedule, depending on use and sensor exposure
to poisons and contaminants. Sensors must be calibrated
regularly and at least once every 180 days (6 months).
• 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.
• BW recommends 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).
• 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.
•Warning: High off-scale LEL readings may indicate an
explosive concentration.
• Only the combustible gas detection portion of this
instrument has been assessed for performance by CSA
International.
• 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.
aCautions
• Before using common products around sensors, refer to
Sensor Poisons and Contaminants.
• 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.
• 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.
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GasAlertMicro 5/PID/IR
User Manual
4
• Calibrate only in a safe area that is free of hazardous gas, in
an atmosphere of 20.9% oxygen.
• Use only BW approved batteries for the GasAlertMicro 5/
PID/IR detectors. Refer to Replacement Parts and
Accessories.
• 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 Battery
Cautions.
• Charge the GasAlertMicro 5/PID/IR batteries using the
recommended charging adapter only. Do not use any other
charging adapter. Failure to adhere to this caution can lead
to fire and/or explosion.
• Read and adhere to all instructions in the charger user
manual. Failure to do so can result in fire, electrical shock,
personal injury, and/or property damage.
• Extended exposure of the GasAlertMicro 5/PID/IR detectors
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.
aCautions
• Protect the PID sensor from exposure to silicone vapors.
• When calibrating O3 and ClO2 sensors that are located in
the Toxic 2 sensor position, a single gas calibration cap
must be used to ensure accurate calibration. For more
information, refer to Single Gas Calibration Cap.
• Replace the CO2 sensor only in a safe and non-hazardous
area that is free of hazardous gas.
• The optional pump (M5-PUMP) is certified for use with the
GasAlertMicro 5/PID/IR detectors only.
• Do not immerse the detector in liquids.
• Do not test the combustible sensor’s response with a
butane cigarette lighter; doing so will damage the sensor.
• Do not expose the detector to electrical shock or severe
continuous mechanical shock.
• Do not attempt to disassemble, adjust, or service the
detector unless instructions for that procedure are provided
in the user manual and/or that part is listed as a
replacement part. Use only BW Technologies by Honeywell
Replacement Parts and Accessories.
• The detector warranty is void if customer, personnel, or
third parties damage the detector during repair attempts.
Repair attempts made by non-BW Technologies by
Honeywell repair/service personnel voids this warranty.
Lithium Battery Packs
•Warning: The lithium battery (M5-BAT08) may present a risk
of fire or chemical burn hazard if misused. Do not
disassemble,
heat above 100°C (212°F), or incinerate.
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5
GasAlertMicro 5/PID/IR
aCautions
• Do not use any other lithium batteries with the
GasAlertMicro 5/PID/IR detectors. Use of any other cell can
cause fire and/or explosion. To order and replace the M5-
BAT08 battery, refer to Replacement Parts and Accessories.
•Warning: Lithium polymer cells exposed to heat at 130°C
(266°F) 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.
• 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.
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GasAlertMicro 5/PID/IR
User Manual
6
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.
Table 2. Sensor Poisons and Contaminants
Cleaners and
Lubricants Silicones Aerosols
Brake cleaners Silicone cleaners
and protectants
Bug repellents
and sprays
Lubricants Silicone based
adhesives, seal-
ants, and gels
Lubricants
Rust inhibitors Hand/body and
medicinal creams
that contain silicone
Rust inhibitors
Window and glass
cleaners
Tissues containing
silicone
Window and
glass cleaners
Dishsoaps Mold releasing
agents
Citrus based cleaners Polishes
Alcohol based
cleaners
Hand sanitizers
Anionic detergents
Methanol
(fuels and antifreezes)
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7
GasAlertMicro 5/PID/IR
Sensor Poisons and Contaminants
Table 3. International Symbols
Symbol Description
nApproved to both U.S. and Canadian Standards by CSA International
gEuropean Explosives Protection
XConforms to European Union Directives
ATEX Conforms to European ATEX Directives
IECEx International Electrotechnical Commission Scheme for Certification to Standards for Electrical Equipment for
Explosive Atmospheres
EAC Ex Conforms to Russian Custom Union Certification and Declaration
Conforms to Korea Testing Laboratory (KTL) Certification
Conforms to Brazilian InMetro Certification
Australian Regulatory Compliance Mark
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GasAlertMicro 5/PID/IR
User Manual
8
Getting Started
The list below provides the standard items included with the detector.
If the detector is damaged or parts are missing, contact the place of
purchase immediately.
• Batteries: Three replaceable alkaline cells with battery pack, or
one rechargeable lithium battery pack
• Sensors: O2, combustible (LEL), toxic, H2S/CO (TwinTox sensor),
PID, or CO2
• Calibration cap and hose
• Single gas calibration cap
• Screwdriver
• Quick reference guide
• Quick reference card
• Technical Reference Guide and training on CD-ROM
• Fleet Manager II (if applicable)
To order parts, refer to Replacement Parts and Accessories.
The detector is shipped with the sensors, and battery packs installed.
To replace sensors, the pump, or the battery pack, refer to Replacement
Parts and Accessories.
To become oriented with the features and functions of the detector, refer
to the following figures and tables:
• Figure 1. and Table 4. describe the detector’s components.
• Figure 2. and Table 5. describe the detector’s screen elements.
• Table 6. describes the detector’s button.
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9
GasAlertMicro 5/PID/IR
Parts of the GasAlertMicro 5/PID/IR
Parts of the GasAlertMicro 5/PID/IR
Figure 1. Parts of the GasAlertMicro 5/PID/IR
Table 4. Parts of the GasAlertMicro 5/PID/IR
Item Description
1 Liquid crystal display (LCD)
2 Buttons
3 Audible alarms
4 Toxic 2 sensor
5
Toxic 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 Buttons
10 Battery pack
11 Alligator clip
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GasAlertMicro 5/PID/IR
User Manual
10
Screen Elements
Figure 2. Screen Elements
Note
If enabled, the backlight automatically activates for 8 seconds
when there is an alarm condition and whenever there is
insufficient light to view the LCD. Any button reactivates the
backlight in low light conditions.
Table 5. Screen Elements
Item Description
1 Alarm condition
2 Automatically span sensor
3 Gas cylinder
4Gas type
5 Battery life indicator
6 Passcode lock
7 Data transmission
8Clock
9 Stealth mode
10 Pump indicator (optional)
11 MMC indicator (optional)
12
Alarm condition (low, high, TWA,
STEL, or multi alarm) or view TWA,
STEL and peak (MAX) gas expo-
sures
13 Automatically zero sensor
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