BW Technologies GasAlertMax XT II Use and care manual

1, 2, 3, and 4-Gas Detector
Technical Reference Guide

Table of Contents
Title Page
Contacting BW Technologies by Honeywell .................................................................................................................... 1
Introduction ......................................................................................................................................................................... 1
Gases Monitored ............................................................................................................................................................. 2
Safety Information - Read First.......................................................................................................................................... 2
Getting Started .................................................................................................................................................................... 6
Parts of the GasAlertMax XT II........................................................................................................................................... 7
Display Elements ................................................................................................................................................................ 8
Activating/Deactivating the Detector .............................................................................................................................. 10
Startup Tests ..................................................................................................................................................................... 10
Battery Test ................................................................................................................................................................... 10
Audible/Visual Test ........................................................................................................................................................ 10
Firmware Version ..................................................................................................................................................... 11
Startup Message ...................................................................................................................................................... 11
Location Logging ...................................................................................................................................................... 11
Pump Test on Startup.................................................................................................................................................... 12
Alarm Setpoints ............................................................................................................................................................. 13
Self-Test ........................................................................................................................................................................ 14
Automatic Zero for H2S, CO, O2, and LEL .................................................................................................................... 15
If Previous Calibration Failed ......................................................................................................................................... 15
Calibration Due Date (optional) ..................................................................................................................................... 16
Force Calibration Enabled (optional) ............................................................................................................................. 16
Cal IR Lock Enabled (optional) ...................................................................................................................................... 17
If Previous Bump Failed................................................................................................................................................. 17

GasAlertMax XT II
Technical Reference Guide
Title Page
Bump Test...................................................................................................................................................................... 17
Force Bump Enabled (optional) ..................................................................................................................................... 18
Startup Test Pass .......................................................................................................................................................... 18
Startup Test Fail............................................................................................................................................................. 19
Installing Fleet Manager II ................................................................................................................................................ 20
Using Fleet Manager II to Configure the Detector ......................................................................................................... 20
Device Configuration ........................................................................................................................................................ 21
Serial Number Field ....................................................................................................................................................... 22
Firmware Version........................................................................................................................................................... 22
Hardware Version .......................................................................................................................................................... 22
Startup Message Top Line ............................................................................................................................................. 22
Startup Message Bottom Line........................................................................................................................................ 22
Lockout on Self-Test Error (failed sensor lock) .............................................................................................................. 22
Safe Mode...................................................................................................................................................................... 23
Confidence Beep ........................................................................................................................................................... 23
Latching Alarms ............................................................................................................................................................. 23
Force Calibration............................................................................................................................................................ 23
Force Bump ................................................................................................................................................................... 24
Cal IR Lock .................................................................................................................................................................... 24
Location Logging............................................................................................................................................................ 25
Force Block Test ............................................................................................................................................................ 25
Datalog Interval.............................................................................................................................................................. 25
Confidence Interval ........................................................................................................................................................ 26
Language ....................................................................................................................................................................... 26
Sensor Configuration ....................................................................................................................................................... 26
Sensor Disabled............................................................................................................................................................. 27
Calibration Gas (ppm).................................................................................................................................................... 27

GasAlertMax XT II
Technical Reference Guide
Title Page
Calibration Interval ......................................................................................................................................................... 28
Bump Interval................................................................................................................................................................. 28
Low Alarm ...................................................................................................................................................................... 28
High Alarm ..................................................................................................................................................................... 28
TWA Alarm..................................................................................................................................................................... 29
STEL Alarm.................................................................................................................................................................... 29
STEL Interval ................................................................................................................................................................. 30
TWA Period (hours) ....................................................................................................................................................... 30
Correction Factor (%)..................................................................................................................................................... 30
50% LEL = (%CH4)........................................................................................................................................................ 31
Auto Zero on Startup...................................................................................................................................................... 31
LEL by Volume CH4 ...................................................................................................................................................... 31
10% (of reading) Over-span........................................................................................................................................... 31
20.8 Base Reading ........................................................................................................................................................ 31
Low Alarm Acknowledge................................................................................................................................................ 31
Alarms ................................................................................................................................................................................ 32
Computed Gas Exposures ............................................................................................................................................... 35
Viewing and Clearing Gas Exposures ........................................................................................................................... 35
Gas Alarm Setpoints ...................................................................................................................................................... 36
Resetting Gas Alarm Setpoints...................................................................................................................................... 37
Stopping a Gas Alarm .................................................................................................................................................... 37
Sensor Alarm ................................................................................................................................................................. 37
Pump Alarm ................................................................................................................................................................... 38
Low Battery Alarm.......................................................................................................................................................... 38
Automatic Deactivation Alarm ........................................................................................................................................ 38
Bump Test.......................................................................................................................................................................... 39
Bump Test Using the MicroDock II Station .................................................................................................................... 39

GasAlertMax XT II
Technical Reference Guide
Title Page
Calibration ......................................................................................................................................................................... 40
Guidelines ...................................................................................................................................................................... 40
Diagnostics Protection ................................................................................................................................................... 41
Connecting the Gas Cylinder to the Detector ................................................................................................................ 41
Calibration Procedure .................................................................................................................................................... 42
Auto Zero Sensor...................................................................................................................................................... 43
Auto Span ................................................................................................................................................................. 44
Calibration Due Date ................................................................................................................................................ 45
Verification ................................................................................................................................................................ 46
Calibrating Using the IR Link ......................................................................................................................................... 47
Event Logs......................................................................................................................................................................... 49
Datalogs ............................................................................................................................................................................. 49
Bump and Calibration Results......................................................................................................................................... 50
Downloading Datalogs and Event Logs ......................................................................................................................... 50
Software Requirements ................................................................................................................................................. 50
Maintenance ...................................................................................................................................................................... 51
Maximum Hose Length for Sampling ............................................................................................................................. 51
Battery Maintenance and Cautions ................................................................................................................................ 51
Charging the Battery ...................................................................................................................................................... 52
Optimum Battery Operation ...................................................................................................................................... 53
Replacing the Battery..................................................................................................................................................... 53
Replacing a Sensor or Sensor Filter .............................................................................................................................. 53
Replacing the Pump Filters............................................................................................................................................ 57
Replacing the Pump....................................................................................................................................................... 59
Troubleshooting................................................................................................................................................................ 60
Replacement Parts and Accessories .............................................................................................................................. 63
Specifications.................................................................................................................................................................... 65

GasAlertMax XT II
Technical Reference Guide
Title Page
General Datalogger Specifications ................................................................................................................................ 67

List of Figures
Figure Title Page
1. Parts of the GasAlertMax XT II............................................................................................................................. 7
2. Display Elements.................................................................................................................................................. 8
3. Connecting the IR Link ....................................................................................................................................... 20
4. Device Configuration Section ............................................................................................................................. 21
5. Sensor Configuration Tab (H2S) ........................................................................................................................ 26
6. Connecting the Gas Cylinder to the Detector..................................................................................................... 42
7. Calibrate Device Dialog Box............................................................................................................................... 47
8. Connecting the Charger Adapter........................................................................................................................ 52
9. Replacing a Sensor or Sensor Filter .................................................................................................................. 55
10. Front and Rear Shells Side by Side ................................................................................................................... 56
11. Remove the O2Sensor With a Scredriver.......................................................................................................... 56
12. Replacing the Pump Filters ................................................................................................................................ 58
13. Removing the Pump Filters ................................................................................................................................ 58
14. Troubleshooting.................................................................................................................................................. 60

List of Tables
Table Title Page
1. Gases Monitored .................................................................................................................................................. 2
2. International Symbols ........................................................................................................................................... 5
3. Parts of the GasAlertMax XT II............................................................................................................................. 7
4. Display Elements.................................................................................................................................................. 8
5. Pushbutton ........................................................................................................................................................... 9
6. Connecting the IR Link ....................................................................................................................................... 20
7. Alarms ................................................................................................................................................................ 32
8. Computed Gas Exposures ................................................................................................................................. 35
9. Gas Alarm Setpoints .......................................................................................................................................... 36
10. Sample Factory Alarm Setpoints ........................................................................................................................ 37
11. Connecting the Charger Adapter........................................................................................................................ 52
12. Replacing a Sensor or Sensor Filter .................................................................................................................. 54
13. Replacing the Pump Filters ................................................................................................................................ 57
14. Replacement Parts and Accessories ................................................................................................................. 63

1
GasAlertMax XT II
Introduction
a Warning
To ensure personal safety, read Safety Information -
Read First and aCautions before using the detector.
The GasAlertMax XT II gas detector (“the detector”) warns of
hazardous gas at levels above user-defined alarm setpoints.
The detector is a personal safety device. It is your respons bility
to respond properly to the alarm.

GasAlertMax XT II
Technical Reference Guide
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 TECHNICAL REFERENCE GUIDE
COMPLETELY BEFORE OPERATING AND SERVICING.
Safety Information - Read First
Use the detector only as specified in this technical reference guide,
otherwise the protection provided by the detector may be impaired.
International symbols used on the detector and in this technical
reference guide are defined in Table 2.
Read the aCautions on the following pages before using the detector.
ec 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 must be
disposed of by a qualified recycler or hazardous
materials handler.
Gas Detected Unit of Measure
Hydrogen sulfide (H2S) parts per million (ppm)
Carbon monoxide parts per million (ppm)
Combustible gases (LEL)
a) percent of lower explosive limit
(%LEL)
b) percent by volume methane
0-5.0% v/v
Oxygen (O2)% volume

3
GasAlertMax XT II
Safety Information - Read First
aCautions
•Warning: Substitution ofcomponents may impair Intrinsic Safety.
•Caution: For safety reasons, this equipment must be operated and serviced by qualified personnel only. Read and
understand the technical reference guide completely before operating orservicing.
•Do not use the detector if it is damaged. Inspect the detector before using. Look for cracks and/or missing parts.
•Use only sensor(s) that are specifically designed for the GasAlertMax XT II model.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.
•Protect the combustible sensor from exposure to lead compounds, silicones, and chlorinated hydrocarbons.
Although certain organic vapors (such asleaded gasoline and halogenated hydrocarbons) may temporarily inhibit
sensor performance, in most cases, the sensor will recover after calibration.
•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.
• For use only inpotentially explosive atmospheres where oxygen concentrations do not exceed 20.9% (v/v).
•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.
• Calibrate only in a safe area that isfree of hazardous gas.

4
GasAlertMax XT II
Technical Reference Guide
aCautions
• Use only BW approved batteries for the GasAlertMax XT II detector. Refer to Replacement Parts and Accessories.
• Charge the detector before first-time use. BW recommends the detector be charged after every workday.
•Charge the GasAlertMax XT II using the recommended charging adapter only. Do not use any other charging adapter.
Failure to adhere to this precaution can lead to fire and/or explosion. Read and adhere to all instructions in the
charger operator’s manual. Failure to do so can result in fire, electrical shock, personal injury, and/or property
damage.
•Extended exposure of the GasAlertMax XT II 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.
• 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 immerse the detector in liquids.
• The pump (XT-RPUMP-K1) is certified for use with the GasAlertMax XT II detector only.
• Do not attempt to disassemble, adjust, or service the detector unless instructions for that procedure are provided in
the technical reference guide and/or that part is listed as a replacement part. Use only BW Technologies by Honeywell
Replacement Parts and Accessories.
• The detector warranty will be voided if customer, personnel, or third parties damage the detector during repair
attempts. Non-BW Technologies by Honeywell repair/service attempts void this warranty.
•Warning: The lithium battery (MX-BAT01) may present a risk of fire or chemical burn hazard if misused. Do not
disassemble, heat above 212°F (100°C), or incinerate.
• Do not use any other lithium batteries with the GasAlertMax XT II detector. Use of any other cell can cause fire and/or
explosion. To order and replace the MX-BAT01 battery, refer to Replacement Parts and Accessories.

5
GasAlertMax XT II
Safety Information - Read First
aCautions
Table 2. International Symbols
• 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.
• Calibration cylinders that are used with a demand flow regulator must meet the following maximum inlet pressure
specifications:
•Disposable cylinders 0-3000 psig/70 bar
•Refillable cylinders 0-3000 psig/70 bar
Symbol Meaning
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

GasAlertMax XT II
Technical Reference Guide
6
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.
• Sensors: H2S, CO, O2, and combustible (LEL)
• Calibration hose with quick connector
• Charging adapter
• Operator’s manual
• Quick reference card
• Technical reference guide on CD-ROM
Note
The IR connectivity kit, which includes the IR Link, is sold sep-
arately.
To order parts, refer to Replacement Parts and Accessories.
The detector is shipped with the sensors, pump, and rechargeable
battery installed. To replace sensors, the pump, or the battery, refer to
Replacement Parts and Accessories.
For instructions to replace the sensor(s), pump, or battery, refer to the
procedures in the following sections:
•Replacement Parts and Accessories
•Replacing the Pump
•Replacing the Battery
To become oriented with the features and functions of the detector, refer
to the following figures and tables:
• Figure 1. and Table 3. describe the detector’s components.
• Figure 2. and Table 4. describe the detector’s display elements.
• Table 5. describes the detector’s pushbutton.

7
GasAlertMax XT II
Parts of the GasAlertMax XT II
Parts of the GasAlertMax XT II
Figure 1. Parts of the GasAlertMax XT II
Table 3. Parts of the GasAlertMax XT II
Item Description
1 Visual alarm indicators (LEDs)
2 Pump quick connector
3 Pump filter and moisture filter
4 Pushbutton
5 Alligator clip
6 Charging connector and IR interface
7 Diffusion cover locking screw
8 Diffusion cover
9 Audible alarm
10 Liquid crystal display (LCD)

GasAlertMax XT II
Technical Reference Guide
8
Display Elements
Figure 2. Display Elements
Table 4. Display Elements
Item Description
1 Alarm condition
2 Automatically zero sensor indicator
3 Numeric values
4 Battery life indicator
5 Pump indicator
6 Heartbeat indicator
7 Gas type identifiers
8 Gas cylinder indicator
9 Automatically span sensor indicator

9
GasAlertMax XT II
Display Elements
Table 5. Pushbutton
Pushbutton Description
C
• To activate the detector press C.
• To deactivate the detector, press and hold Cuntil the OFF countdown is complete and the LCD deactivates.
• To view the date/time, TWA, STEL, and maximum (MAX) readings, press Ctwice rapidly. To clear the TWA,
STEL, and MAX readings, press Cwhen the LCD displays CLEAR ALL.
• To initiate calibration, press and hold Cas the detector performs the OFF countdown. Continue holding C
while the LCD briefly deactivates and then reactivates to begin the CAL countdown. Release Cwhen the
CAL countdown is complete.
• To activate the backlight, press C and release.
• To acknowledge the latched and pump alarms, press C.
• To acknowledge a low alarm and disable the audible alarm temporarily, press C. The Low Alarm
Acknowledge option must be enabled in Fleet Manager II.
• To acknowledge any of the Due Today alarms (calibration, bump test, pump block test), press C.

GasAlertMax XT II
Technical Reference Guide
10
Activating/Deactivating the Detector
Note
Ensure the diffusion cover is attached prior to activating the
detector to verify the pump is working correctly.
To activate the detector, press Cin a safe area that is free of hazardous
gas. Attach any pump accessories to the detector prior to activating the
detector.
To deactivate the detector, press and hold Cuntil the OFF countdown
completes.
aCaution
The maximum hose length for sampling is 75 ft (22m).
Startup Tests
When the detector is activated, it performs several startup tests. Confirm
the following tests occur.
Battery Test
The detector performs a battery test during startup. If the battery has
insufficient power to operate, the following screens displays before
deactivating.
Recharge the battery for 6 hours and then reactivate the detector.
Refer to Charging the Battery.
Audible/Visual Test
1. All of the LCD elements display simultaneously as the
detector beeps, flashes, vibrates, and activates the
backlight.

11
GasAlertMax XT II
Startup Tests
Firmware Version
2. The current firmware version installed on the detector
displays on the LCD.
Startup Message
3. If enabled and data is entered in Fleet Manager II, a
startup message (25 characters per line) displays or
scrolls (depending upon length of message) on the LCD.
If the startup message option is not enabled, it is
bypassed during the startup test.
Refer to Startup Message Top Line in User Options.
Location Logging
4. If the Location Logging option is enabled, the detector
prompts for a number (1-999) to be entered that identifies
the location (wells, plants, or other areas) where the
detector is being used.
Within 3 seconds, press and continue pressing Cuntil
the desired number displays. To scroll rapidly, press and
hold C.
Note
The site ID number that is entered does not reset when the
detector is deactivated. If required, enter a new site ID when
the detector is again activated.

GasAlertMax XT II
Technical Reference Guide
12
Pump Test on Startup
Note
The diffusion cover must be attached to the detector to activate
the pump and initiate the pump test.
aCaution
The maximum hose length for sampling is 75 ft (22m).
5. In cold temperatures, the pump may require a short
period of time to warm up before operating. If this is
required, the following screen displays.
The LCD displays a countdown of the time remaining
(in seconds) for the pump to warm up.
If the Force Block Test option is enabled, the detector
performs a pump test. The following screen displays.
Using your finger, block the end of the hose. The follow-
ing screen displays.
Note
If the hose is not blocked and unblocked within 2.5 minutes,
the detector will assume the pump has failed and deactivates.
Successful Pump Test: If the pump test is successful,
the following screen displays.