GasTech Cannonball3 Manuel utilisateur

Reference Manual

Cannonball3

Multi Gas Detector

http://www.gastech.com.au

24 Baretta Rd

Wangara Western Australia 6065

GasTech Australia Pty Ltd

Fax 1800 999 903

Tel 1800 999 902

THE Cannonball3 PERSONAL PORTABLE GAS DETECTOR HAS BEEN DESIGNED FOR

THE DETECTION OF DEFICIENCIES OF OXYGEN, ACCUMULATIONS OF FLAMMABLE

GASES AND VAPORS AND ACCUMULATIONS OF TOXIC VAPORS.

IN ORDER TO ENSURE THAT THE USER IS PROPERLY WARNED OF

POTENTIALLY DANGEROUS ATMOSPHERIC CONDITIONS, IT IS ESSENTIAL

THAT THE INSTRUCTIONS IN THIS REFERENCE MANUAL BE READ, FULLY

UNDERSTOOD, AND FOLLOWED.

FOR INSTRUMENTS WITH DILUTION CAPABILITY, SEE THE CANNONBALL3

DILUTION MANUAL - SPERIAN INSTRUMENTATION PART NUMBER 13-186.

FOR INSTRUMENTS INCLUDING THE HC/LEL SENSOR, SEE THE HC/LEL

ADDENDUM TO THE CANNONBALL3 REFERENCE MANUAL - SPERIAN

INSTRUMENTATION PART NUMBER 13-236.

Cannonball3 Reference Manual

Version 1.50

Sperian Instrumentation, LLC

Middletown, Connecticut 06457

No page or part of this operation manual may be reproduced in any form

without written permission of the copyright owner shown above.

Patent Information

The Cannonball3 is protected by United States Patent Number 6,604,405.

Table of Contents

Signal Words __________________________________________________________ 6

Warnings 6

Chapter 1.Description ___________________________________________________ 7

1.1 Cannonball3 capabilities _________________________________________________7

1.2 Methods of sampling ____________________________________________________7

1.3 Multi-sensor capability __________________________________________________ 7

1.4 Calibration ____________________________________________________________ 7

1.5 Alarm logic ____________________________________________________________7

1.5.1 Alarm latch _________________________________________________________________________ 7

1.5.2 Atmospheric hazard alarms_____________________________________________________________ 7

1.5.3 Sensor overrange alarms.______________________________________________________________ 8

1.5.4 Low battery alarms ___________________________________________________________________ 8

1.5.5 Calibration reminder __________________________________________________________________ 8

1.5.6 Other alarms and special microprocessor features___________________________________________ 8

1.6 Other electronic safeguards ______________________________________________8

1.6.1 Security beep _______________________________________________________________________ 9

1.7 Classification for intrinsic safety __________________________________________ 9

1.8 Sensors_______________________________________________________________ 9

1.9 Continuous sample draw pump ___________________________________________ 9

1.10 Black box data recorder _________________________________________________9

1.11 Cannonball3 design components__________________________________________ 9

1.12 Cannonball3 accessories _______________________________________________10

1.12.1 Alkaline Cannonball3 detectors_________________________________________________________ 10

1.12.2 NiMH Cannonball3 detectors___________________________________________________________ 10

Chapter 2.Basic operation ______________________________________________ 10

2.1 Operational warnings and cautions _______________________________________ 10

2.2 On and off sequences __________________________________________________11

2.2.1 Start-up sequence___________________________________________________________________ 11

2.2.1.1 Other start-up screens _____________________________________________________________ 12

2.2.1.1.1 “Non-standard alarms” ________________________________________________________ 12

2.2.1.1.2 “Warning Sensor Needs Cal” ___________________________________________________ 12

2.2.2 Shut-down sequence_________________________________________________________________ 13

2.3 Operating modes ______________________________________________________13

2.3.1 Text Only mode_____________________________________________________________________ 13

2.3.2 Basic mode ________________________________________________________________________ 14

2.3.3 Basic/Peak mode ___________________________________________________________________ 14

2.3.3.1 Peak readings____________________________________________________________________ 14

2.3.3.2 To reset peak readings_____________________________________________________________ 14

2.3.4 Technician mode____________________________________________________________________ 15

2.3.4.1 STEL __________________________________________________________________________ 15

2.3.4.2 TWA readings____________________________________________________________________ 15

2.3.4.3 Average readings _________________________________________________________________ 15

2.3.5 Changing operating modes____________________________________________________________ 15

2.4 Batteries _____________________________________________________________ 16

2.4.1 Alkaline batteries____________________________________________________________________ 16

2.4.1.1 Replacing alkaline batteries _________________________________________________________ 16

2.4.2 NiMH rechargeable battery ____________________________________________________________ 16

2.4.2.1 Storage guidelines for the NiMH battery. _______________________________________________ 16

2.4.2.2 Charging guidelines for NiMH battery__________________________________________________ 17

2.4.2.3 Charging procedure for NiMH battery__________________________________________________ 17

2.4.3 Low battery alarms __________________________________________________________________ 17

2.5 Methods of sampling ___________________________________________________17

2.5.1 Protective “low flow” shut-downs________________________________________________________ 18

2.5.2 Sample probe assembly ______________________________________________________________ 18

2.5.2.1 Changing sample probe filters _______________________________________________________ 18

2.5.2.2 Changing sample probe tubes _______________________________________________________ 18

2.5.3 Pump modules _____________________________________________________________________ 19

2.5.3.1 Replacing the pump module_________________________________________________________ 19

2.6 EEPROM equipped “Smart Sensors” ______________________________________ 19

2.6.1 Identification of sensor type____________________________________________________________ 19

2.6.2 Other information stored in the sensor EEPROM ___________________________________________ 19

2.6.3 Sensor removal and replacement _______________________________________________________ 19

2.6.4 Missing sensor _____________________________________________________________________ 20

2.6.5 “Sensor not found”___________________________________________________________________ 20

Chapter 3.Advanced Functions __________________________________________ 20

3.1 The Main Menu________________________________________________________20

3.1.1 Entering the Main Menu ______________________________________________________________ 20

3.2 The Screen Menu ______________________________________________________ 20

3.2.1 Entering the Screen Menu_____________________________________________________________ 21

3.2.2 Adjusting the contrast ________________________________________________________________ 21

3.2.3 Adjusting the backlight _______________________________________________________________ 21

3.2.3.1 Backlight ON Always ______________________________________________________________ 21

3.2.3.2 Adjusting the backlight interval_______________________________________________________ 22

3.3 The Calibration Menu___________________________________________________22

3.4 The View Menu________________________________________________________22

3.4.1 Entering the View Menu ______________________________________________________________ 22

3.4.2 View alarm levels ___________________________________________________________________ 23

3.4.3 View battery voltage _________________________________________________________________ 23

3.4.4 View service information ______________________________________________________________ 23

3.4.5 View software version________________________________________________________________ 23

3.5 The Alarms Menu ______________________________________________________24

3.5.1 Entering the Alarms Menu_____________________________________________________________ 24

3.5.2 Custom alarm settings________________________________________________________________ 24

3.5.3 Alarm and OK latches ________________________________________________________________ 25

3.5.3.1 Alarm latch settings _______________________________________________________________ 25

3.5.3.2 OK latch settings _________________________________________________________________ 25

3.5.4 Default alarm settings ________________________________________________________________ 26

3.5.4.1 Restore factory default alarm settings _________________________________________________ 26

3.5.5 Temperature alarm __________________________________________________________________ 26

3.5.6 Warning Alarms_____________________________________________________________________ 27

3.5.6.1 Enable/disable warning alarms_______________________________________________________ 27

3.5.6.2 Adjust warning alarm levels _________________________________________________________ 28

3.5.6.3 Timeout adjustment _______________________________________________________________ 28

3.6 The Time Menu________________________________________________________ 29

3.6.1 Entering the Time Menu ______________________________________________________________ 29

3.6.2 Time and date settings _______________________________________________________________ 29

3.6.3 Service date settings_________________________________________________________________ 30

3.6.3.1 Enable/Disable sensor service due date settings_________________________________________ 30

3.6.3.2 Change sensor service due dates ____________________________________________________ 30

3.6.4 Communications ____________________________________________________________________ 31

3.7 The Options Menu _____________________________________________________ 31

3.7.1 Entering the Options Menu ____________________________________________________________ 31

3.7.2 User modes________________________________________________________________________ 32

3.7.2.1 Overview of user modes____________________________________________________________ 32

3.7.2.2 Text Only mode __________________________________________________________________ 32

3.7.2.3 Basic mode______________________________________________________________________ 32

3.7.2.4 Basic/Peak mode _________________________________________________________________ 33

3.7.2.4.1 Peak readings_______________________________________________________________ 33

3.7.2.5 Technician Mode _________________________________________________________________ 33

3.7.2.5.1 STEL Readings______________________________________________________________ 33

3.7.2.5.2 TWA readings_______________________________________________________________ 33

3.7.2.5.3 Average readings ____________________________________________________________ 33

3.7.2.6 Changing the user mode ___________________________________________________________ 33

3.7.3 Security beep ______________________________________________________________________ 34

3.7.3.1 Adjusting the security beep__________________________________________________________ 34

3.7.4 Passcode _________________________________________________________________________ 35

3.7.4.1 Change passcode setting___________________________________________________________ 35

3.7.4.2 Changing the passcode ____________________________________________________________ 36

3.7.5 Language _________________________________________________________________________ 37

3.7.5.1 Entering the Language Menu ________________________________________________________ 37

3.7.6 DECIMAL: Changing the precision of the toxic sensor readout_________________________________ 37

3.7.7 Sensor enable/disable________________________________________________________________ 38

3.8 ID Info _______________________________________________________________39

3.8.1 Entering the ID Info Menu _____________________________________________________________ 39

3.8.2 User and location list settings __________________________________________________________ 39

3.8.3 Selecting a user or location ID__________________________________________________________ 41

Chapter 4.Calibration___________________________________________________ 43

4.1 Verification of accuracy_________________________________________________ 43

4.2 Effect of contaminants on Cannonball3 sensors_____________________________ 43

4.2.1 Effects of contaminants on oxygen sensors _______________________________________________ 43

4.2.2 Effects of contaminants on combustible sensors____________________________________________ 43

4.2.3 Effects of high concentrations of combustible gas on the combustible sensor _____________________ 44

4.2.4 Effects of contaminants on toxic gas sensors ______________________________________________ 44

4.3 Single sensors capable of monitoring for two different gases__________________ 44

4.3.1 Using one sensor to monitor for carbon monoxide and hydrogen sulfide _________________________ 44

4.3.1.1 Duo-Tox dual purpose carbon monoxide / hydrogen sulfide sensor___________________________ 44

4.3.1.2 “CO Plus” dual purpose carbon monoxide/hydrogen sulfide sensor___________________________ 44

4.3.1.2.1 Relative response of the CO Plus sensor to carbon monoxide and hydrogen sulfide_________ 45

4.3.2 Cl2and ClO2 sensors_________________________________________________________________ 45

4.4 Functional (bump) test__________________________________________________ 45

4.5 Automatic calibration___________________________________________________46

4.5.1 Automatic fresh air calibration sequence _________________________________________________ 46

4.5.1.1 Reading “Too High” or “Too Low” for zero adjust_________________________________________ 47

4.5.2 Automatic span calibration sequence ____________________________________________________ 47

4.5.3 Automatic span calibration with more than one gas source ___________________________________ 49

4.6 Manual calibration _____________________________________________________ 49

4.6.1 Manual fresh air calibration procedure ___________________________________________________ 49

4.6.1.1 Shortcuts to the manual fresh air calibration procedures _____________________________________ 50

4.6.1.1.1 Shortcut to fresh air calibration while in normal operation______________________________ 50

4.6.1.1.2 Shortcut to Main Menu while turning the Cannonball3 on______________________________ 50

4.6.2 Manual span calibration procedures _____________________________________________________ 50

4.6.3 O2zero calibration___________________________________________________________________ 52

4.7 The Calibration Menu___________________________________________________53

4.7.1 Entering the Calibration Menu__________________________________________________________ 53

4.7.2 Gas values ________________________________________________________________________ 53

4.7.2.1 Changing the combustible gas readout from LEL to CH4(or vice-versa) _______________________ 54

4.7.2.2 Changing the direct reading setting of the CO Plus sensor from CO to H2S ____________________ 56

4.7.3 Calibration history ___________________________________________________________________ 58

4.7.4 Calibration reminder _________________________________________________________________ 59

4.7.4.1 Remind Interval __________________________________________________________________ 59

4.7.4.2 Repeat Reminder _________________________________________________________________ 60

Chapter 5.Record Keeping ______________________________________________ 61

5.1 Overview of record keeping options_______________________________________ 61

5.2 Black box data recorder ________________________________________________ 61

5.3 Datalogger upgrade ____________________________________________________61

5.3.1 BioTrak Database Software____________________________________________________________ 61

5.3.2 The Datalogger Menu ________________________________________________________________ 62

5.3.2.1 Setting the datalogging interval ______________________________________________________ 62

5.3.2.1.1 Disabling the datalogger ______________________________________________________ 63

5.3.2.2 Clearing the Datalogger ____________________________________________________________ 64

5.3.2.3 Setting the time and date ___________________________________________________________ 64

5.3.2.4 Sessions________________________________________________________________________ 65

5.3.2.5 Service Date_____________________________________________________________________ 66

5.3.2.5.1 Enable/disable sensor service due date settings ___________________________________ 66

5.3.2.5.2 Change sensor service dates __________________________________________________ 66

5.3.2.6 Communications mode_____________________________________________________________ 67

Chapter 6. Basic maintenance ___________________________________________ 68

6.1 Sensors______________________________________________________________ 68

6.1.1 Sensor replacement _________________________________________________________________ 68

6.1.2 New sensor releases_________________________________________________________________ 68

6.1.3. Troubleshooting sensor problems_______________________________________________________ 69

6.1.3.1 Can’t make a “One Button” automatic fresh air adjustment _________________________________ 69

6.1.4 Sensor caps _______________________________________________________________________ 69

6.2 Internal motorized pump ________________________________________________ 69

6.2.1 Pump replacement __________________________________________________________________ 69

6.2.2 Internal filter replacement _____________________________________________________________ 69

6.2.3 Pump failure at start up_______________________________________________________________ 69

6.2.4. Can’t resume normal operation after a “Low Flow” shut down _________________________________ 70

6.3 Sample probe assembly ________________________________________________ 70

6.3.1 Changing sample probe filters__________________________________________________________ 71

6.3.2 Changing sample probe tubes__________________________________________________________ 71

6.4 O-Rings______________________________________________________________ 71

6.4.1 Removal of o-rings __________________________________________________________________ 71

6.4.2. Inspection and cleaning of o-rings_______________________________________________________ 71

6.4.3 Lubrication of o-rings_________________________________________________________________ 71

6.4.4 Recommended lubricants _____________________________________________________________ 71

6.4.5 O-ring kits _________________________________________________________________________ 71

6.5 Returning your Cannonball3 to Sperian Instrumentation for service or repair_____ 72

Appendices___________________________________________________________ 73

Appendix A- Toxic gas measurement - Ceilings, TWAs and STELs __________________ 73

Appendix B Electrochemical Sensor Cross Sensitivity Data _______________________75

Appendix C Cannonball3 sensors ranges ______________________________________76

Appendix D LEL Correction Factors___________________________________________ 76

Appendix E: Calibration Frequency Recommendation_____________________________ 77

Appendix F Sperian Instrumentation Warranty Gas Detection Products______________78

Signal Words

The following signal words, as defined by ANSI Z535.4-1998, are used in the Cannonball3 Reference

Manual.

indicates an imminently hazardous situation which, if not avoided, will result in

death or serious injury.

indicates a potentially hazardous situation which, if not avoided, could result in

death or serious injury.

indicates a potentially hazardous situation, which if not avoided, may result in

moderate or minor injury.

CAUTIONused without the safety alert symbol indicates a potentially hazardous situation

which, if not avoided, may result in property damage.

Warnings

1. The Cannonball3 personal, portable gas detector has been designed for the detection of

dangerous atmospheric conditions. An alarm condition indicates the presence of a potentially life-threatening

hazard and should be taken very seriously. Failure to immediately leave the area during an alarm condition may

result in serious injury or death.

2. In the event of an alarm condition it is important to follow established procedures. The safest

course of action is to immediately leave the affected area, and to return only after further testing determines that the

area is once again safe for entry. Failure to immediately leave the area during an alarm condition may result in

serious injury or death.

3. Use only Energizer E95 or EN95, Duracell MN1300, or Duracell PC1300, 1.5V D cell Alkaline

batteries in the Cannonball3. Substitution of batteries may impair intrinsic safety.

4. The accuracy of the Cannonball3 should be checked periodically with known concentration

calibration gas. Failure to check accuracy can lead to inaccurate and potentially dangerous readings.

5. The accuracy of the Cannonball3 should be checked immediately following any known exposure

to contaminants by testing with known concentration test gas before further use. Failure to check accuracy can

lead to inaccurate and potentially dangerous readings.

6. A sensor that cannot be calibrated or is found to be out of tolerance should be replaced

immediately. An instrument that fails calibration may not be used until testing with known concentration test gas

determines that accuracy has been restored, and the instrument is once again fit for use.

7. Do not reset the calibration gas concentration unless you are using a calibration gas

concentration that differs from the one that is normally supplied by Sperian Instrumentation for use in calibrating the

Cannonball3. Use of inappropriate calibration gas may lead to in accurate and potentially dangerous readings.

Customers are strongly urged to use only Sperian Instrumentation calibration materials when calibrating the

Cannonball3. Use of non-standard calibration gas and/or calibration kit components can lead to dangerously

inaccurate readings and may void the standard Sperian Instrumentation warranty.

8. Use of non-standard calibration gas and/or calibration kit components when calibrating the

Cannonball3 can lead to inaccurate and potentially dangerous readings and may void the standard Sperian

Instrumentation warranty.

Sperian Instrumentation offers calibration kits and long-lasting cylinders of test gas specifically developed for easy

Cannonball3 calibration. Customers are strongly urged to use only Sperian Instrumentation calibration materials when

calibrating the Cannonball3.

9. Substitution of components may impair intrinsic safety.

10. For safety reasons this equipment must be operated and serviced by qualified personnel only.

Read and understand this reference manual before operating or servicing the Cannonball3.

11. A rapid up-scale reading followed by a declining or erratic reading may indicate a hazardous

combustible gas concentration that exceeds the Cannonball3’s zero to 100 percent LEL detection range for units

without a dilution pump, or zero to approximately 200 percent detection range for units with a dilution pump. The

safest course of action is to immediately leave the affected area, and to return only after further testing determines

that the area is once again safe for entry.

Chapter 1. Description

1.1 Cannonball3 capabilities

The Cannonball3 is a gas detector that can be configured to

meet a wide variety of requirements. This chapter provides an

overview of many of the features of the Cannonball3. More

detailed descriptions of the features of the Cannonball3 are

contained in the subsequent chapters of this manual.

1.2 Methods of sampling

Every Cannonball3 includes a built-in continuous sample draw

pump. Since the Cannonball3’s sensor compartment is

contained within the instrument, the gas sample must be drawn

into the instrument by the pump through a probe assembly that

is attached to theinlet coupling on the front of the unit.

Once turned on, the Cannonball3 monitors continuously. The

Cannonball3’s sensors react quickly to changes in the

concentrations of the gases being measured. This type of

operation monitors only the atmosphere in the immediate area

of the end of the probe assembly.

For more details on sampling the atmosphere, see section

2.5.

A detailed description of the Cannonball3 probe assembly

is given in section 6.3.

1.3 Multi-sensor capability

The Cannonball3 can be configured to simultaneously monitor

oxygen, combustible gases and up to three toxic gases.

Sensors can be added, removed, changed, or replaced in the

field. The Cannonball3 microprocessor and “Smart Sensor”

circuitry eliminates the need for laborious set-up procedures.

Accuracy of the Cannonball3 should

be checked periodically with known concentration

calibration gas. Failure to check accuracy can lead to

inaccurate and potentially dangerous readings.

Calibration procedures are discussed in detail in Chapter

The Cannonball3 uses electrochemical toxic sensors that have

been designed to minimize the effects of common interfering

gases. These sensors provide accurate, dependable readings

for toxic gases commonly encountered during confined space

entry and other industrial applications. Toxic sensors available

for use in the Cannonball3 include hydrogen sulfide (H2S),

carbon monoxide (CO), sulfur dioxide (SO2), phosphine (PH3),

ammonia (NH3), chlorine (Cl2), chlorine dioxide (ClO2),

hydrogen cyanide (HCN) and nitrogen dioxide (NO2).

In addition to sensors designed to measure specific toxic

hazards, Sperian Instrumentation also offers two different

sensors that allow for the simultaneous detection of both

carbon monoxide and hydrogen sulfide.

The “Duo-Tox” sensor is a dual channel electrochemical

sensor designed to detect both carbon monoxide and

hydrogen sulfide. The Duo-Tox allows one sensor port to be

used for discriminate detection of both carbon monoxide and

hydrogen sulfide without cross interference.

For more information on the Duo-Tox sensor see section

4.3.1.1.

The “CO Plus” sensor is a single channel electrochemical

sensor. The CO Plus is ideal for situations requiring the use of

a single sensor to monitor for both carbon monoxide and

hydrogen sulfide, but where the user does not need to know

specifically which gas is present.

For more information on the CO Plus sensor see section

4.3.1.2.

Different measurement units are used depending on the gas

being measured.

Type of Hazard Measurement unit

Oxygen (O2) Percentage of air by volume

Combustible gas Percentage of lower

explosive limit (LEL)

All toxic sensors Parts per million in air

Table 1.3: Cannonball3 Units of Measurement

Sensor configuration procedures are discussed in greater

detail in Chapter 2.

1.4 Calibration

The Cannonball3 detector features fully automatic fresh air and

span calibration. Accuracy of the Cannonball3 should

be checked periodically with known concentration

calibration gas. Failure to check accuracy can lead to

inaccurate and potentially dangerous readings.

Calibration procedures are discussed in Chapter 4.

Sperian Instrumentation’s calibration frequency

recommendations are discussed in Appendix E.

Use of these procedures is reserved for authorized

personnel.

1.5 Alarm logic

Cannonball3 gas alarms are user-adjustable and may be set

anywhere within the range of the specific sensor type. When

an alarm set point is exceeded a loud audible alarm sounds,

and the bright red LED alarm lights flash.

The procedure for adjusting alarm levels is covered in

section 3.5.2.

1.5.1 Alarm latch

The Cannonball3 includes a latching alarm that can be enabled

or disabled according to the needs of the user. When the

Cannonball3’s alarm latch is enabled, the audible and visible

alarm will continue to sound after the atmospheric hazard has

cleared. To reset the instrument, simply press the MODE

button. If the Cannonball3’s alarm latch is disabled and the

alarm condition is no longer present, the instrument

automatically returns to normal operation, and the visible and

audible alarms cease without further input from the user.

The procedure for changing alarm latch settings is

covered in section 3.5.3.

1.5.2 Atmospheric hazard alarms

The Cannonball3 personal, portable

gas detector has been designed for the detection of

oxygen deficiencies, and flammable gas and toxic vapor

accumulations. An alarm condition indicating the

presence of one or more of these potentially life-

threatening hazards should be taken very seriously.

In the event of an alarm condition it is

important to follow established procedures. The safest

course of action is to immediately leave the affected area,

and to return only after further testing determines that the

area is once again safe for entry.

A rapid up-scale reading followed by a

declining or erratic reading may indicate a hazardous

combustible gas concentration that exceeds the

Cannonball3’s zero to 100 percent LEL detection range for

units without a dilution pump, or zero to approximately

200 percent detection range for units with a dilution pump.

The safest course of action is to immediately leave the

affected area, and to return only after further testing

determines that the area is once again safe for entry.

The combustible gas alarm is activated when the percent LEL

(Lower Explosive Limit) gas concentration exceeds the pre-set

alarm level.

Two oxygen alarm set points have been provided; one for low

concentrations associated with oxygen deficiencies and one for

high concentrations associated with oxygen enrichments.

Two additional oxygen alarm set points have been provided for

Cannonball3 instruments equipped with the dilution pump for

use in inert or nearly inert atmospheres.

Three alarm set points have been provided for each toxic gas

monitored: TWA (Time Weighted Average), STEL (Short Term

Exposure Limit), and Ceiling.

Appendix A discusses alarm levels.

The procedure for adjusting alarm settings is covered in

section 3.5.2.

1.5.3 Sensor overrange alarms.

The Cannonball3 will go into alarm if a sensor is exposed to a

concentration of gas that exceeds its established range. If the

peak alarm is enabled it will go off before an overrange alarm

provided a STEL or TWA alarm is not activated first. If the

peak alarm is disabled and a toxic sensor goes into overrange

alarm a “SENSOR OUT OF RANGE” message will appear at

the bottom of the display while the audible and visible are

activated. The maximum range value will be displayed for the

sensor in alarm. If the LEL sensor goes into overrange alarm,

the message “LEL OVERRANGE” will appear at the bottom of

the screen, both the audible alarm and the flashing LED alarms

will be activated and an “X” will appear on the LCD in the place

of the numeric reading for the LEL sensor.

In the event of an alarm condition it is

important to follow established procedures. The safest

course of action is to immediately leave the affected area,

and return only after further testing determines that the

area is once again safe for entry.

In the event of an LEL overrange

alarm the Cannonball3 must be turned off, brought to an

area that is known to be safe and then turned on again to

reset the alarm.

Note: The Cannonball3 features automatic warning against

LEL sensor failure due to lack of oxygen. In the case of

oxygen levels below the safe limit for the LEL sensor to

operate, the Cannonball3 will display a message indicating

that O2is too low for LEL to operate.

1.5.4 Low battery alarms

Note: The voltage figures given below are for Cannonball3

instruments with firmware version 1.55 and may be

slightly different for units with other versions of

instrument firmware.

The Cannonball3 includes low battery alarms that are activated

whenever battery voltage approaches a level that will soon

lead to instrument shut down. When the battery voltage is

reduced to approximately 5.15 volts in alkaline units, or 4.82

volts in NiMH rechargeable units, an audible alarm will sound,

and the display screen will indicate that a low battery condition

exists. At this stage, the low battery alarms may be silenced

for up tofifteen minutes by pressing the MODE button. After

the first low battery alarm, the alarm will sound again every

fifteen minutes until the voltage drops to the “Very Low Battery”

level.

The “Very Low Battery” level occurs when the battery voltage

drops to 5.06 volts in alkaline units, or 4.75 volts in NiMH

rechargeable units. Due to the risk of imminent shut down,

when the battery voltage reaches the “Very Low Battery” level

it is no longer possible to silence the low battery alarms. At

this point, it is necessary to either immediately leave the

hazardous area in which the instrument is being used or to

immediately install a new battery pack with a charge sufficient

to avoid the low battery alarms.

When the voltage drops to 5.00 volts in alkaline units, or 4.73

volts in NiMH rechargeable units. the Cannonball3 will display

a "Dead Battery" message to warn the user of imminent shut

down. The instrument will then automatically turn itself off.

After any low battery alarm the batteries should be replaced if

the Cannonball3 is equipped with alkaline batteries or the

battery should be recharged if the Cannonball3 is equipped

with a NiMH rechargeable battery.

Use only Energizer E95 or EN95,

Duracell MN1300, or Duracell PC1300, 1.5V D cell Alkaline

batteries in the Cannonball3. Substitution of batteries may

impair intrinsic safety.

1.5.5 Calibration reminder

The Cannonball3 has a calibration reminder to let the user

know that the instrument is due for calibration. The reminder

can be set to any interval between 1 and 180 days, or can be

disabled entirely. Additional controls allow the user to

determine if the reminder will be shown once per operating

session, or every 15 minutes. Successful calibration resets the

reminder.

See section 4.7.4 for further details about the calibration

reminder.

1.5.6 Other alarms and special microprocessor features

Cannonball3 software includes a number of additional alarms

designed to ensure the proper use of the instrument. When

the Cannonball3 detects that an electronic fault or failure

condition has occurred, the proper audible and visible alarms

are activated and an explanatory message is displayed.

The Cannonball3 is designed to detect

potentially life threatening atmospheric conditions. Any

alarm condition should be taken seriously. The safest

course of action is to immediately leave the affected area,

and return only after further testing determines that the

area is once again safe for entry.

1.6 Other electronic safeguards

Several automatic programs prevent tampering and misuse of

the Cannonball3 by unauthorized persons. Each time the

detector is turned on, the Cannonball3 automatically tests the

LED alarm lights and audible alarm. The battery is monitored

continuously for proper voltage. The Cannonball3 also

monitors the connection of sensors that are currently installed.

The detection of any electronic faults causes the activation of

the audible and visible alarms and causes the display of the

appropriate explanatory message.

1.6.1 Security beep

The Cannonball3 offers a security beep that may be configured

to “beep” at defined intervals to indicate that the instrument is

turned on.

Optional set-up choices, including security beep settings,

are accessed through the Options Menu. See section 3.7

for details.

1.7 Classification for intrinsic safety

The Cannonball3 has been classified for intrinsic safety by the

following testing laboratories:

Underwriters Laboratories, Inc. (file number E109447) for

use in Hazardous Locations Class I, Division 1, Groups A,

B, C, and D Temp T3C.

CSA (file number 159202) Class I Division 1 Groups

A,B,C,D Exia Temp T3C.

1.8 Sensors

The Cannonball3 can be configured to measure oxygen,

combustible gas, and up to three additional toxic gases. Up to

four sensors can be installed in the Cannonball3. With the

“Duo-Tox” dual channel CO/H2S sensor installed, the

instrument is capable of displaying readings for up to five

different channels of detection: O2, LEL, CO, H2S and one

other toxic sensor. The sensor configuration of the

Cannonball3 can be specified at the time of purchase, or

changed in the field by appropriately trained personnel.

Accuracy of the Cannonball3 should

be checked periodically with known concentration

calibration gas. Failure to check accuracy can lead to

inaccurate and potentially dangerous readings.

Calibration procedures are discussed in detail in Chapter

1.9 Continuous sample draw pump

Every Cannonball3 includes a built-in continuous sample draw

pump. Since the Cannonball3’s sensor compartment is

contained within the instrument, the gas sample must be drawn

into the instrument by the pump through a probe assembly that

is attached to theinlet coupling on the front of the unit.

The pump contains a pressure sensor that detects restrictions

in airflow caused by water or other fluids being drawn into the

unit and immediately acts to shut the pump off in order to

protect the sensors, pump, and other Cannonball3 components

from damage.

Pump status is continuously monitored by the Cannonball3

microprocessor. Low flow or other pump fault conditions

activate audible and visible alarms and cause the display of the

appropriate explanatory message.

Cannonball3 instruments equipped with alkaline battery packs

and fresh D-cell alkaline batteries are designed to provide at

least 24 hours of continuous operation even when the

instrument is operated in low light conditions and the backlight

is continuously on. Use only Energizer E95 or EN95,

Duracell MN1300, or Duracell PC1300, 1.5V D cell Alkaline

batteries in the Cannonball3. Substitution of batteries

may impair intrinsic safety.

Cannonball3 instruments equipped with NiMH rechargeable

battery packs are designed to provide at least 16 hours of

continuous operation between charges even when the

instrument is operated in low light conditions and the backlight

is continuously on.

1.10 Black box data recorder

Every Cannonball3 purchased without a datalogger includes a

“black box” data recorder that functions similarly to a

datalogger, with one important distinction: The data stored in a

Cannonball3 with a datalogger option can be accessed directly

by the user with Sperian Instrumentation’s Biotrak Database

Software. Instruments with the black box data recorder must

be sent back to Sperian Instrumentation for data retrieval.

If the data stored in a Cannonball3 equipped with a black box

data recorder is needed, simply call Sperian’s Instrument

Service Department at (800) 711-6776 for a return

authorization number and send the instrument back to Sperian

Instrumentation. Sperian Instrumentation will extract the data

from the instrument and print an incident report at no charge.

You only pay for shipping.

Datalogging functions are discussed in detail in Chapter 5.

1.11 Cannonball3 design components

Case: The instrument is enclosed in a solid ABS case with two

gaskets between its upper and lower sections. The first is a

water-resistant PVC gasket that protects against leakage or

exposure to dust and liquids. The second gasket is a metal-

braided O-ring that increases the Cannonball3’s immunity to

radio frequency interference.

Front face: The front face of the Cannonball3 houses the

graphics-capable LCD display, MODE button, four navigation

arrows, three alarm light ports, and the quick reference card.

LCD display: A large graphics-capable liquid crystal display

(LCD) shows readings, messages, menus and other

information. An automatically activated backlight allows the

display to be read in dim light conditions.

Alarm light: Three alarm light ports located on three different

sides of the Cannonball3 ensure that at least one of the alarm

light ports is visible from any angle.

Control buttons: The large oval push-button to the left of the

handle is the MODE button. The MODE button is used to turn

the Cannonball3 on and off, and to control many other basic

operations, including automatic calibration adjustments. The

four triangular navigation arrows are used to scroll or navigate

through additional menu choices and screens of information.

Sensor compartment: The sensor compartment is contained

within the Cannonball3 itself. Gas samples are drawn into the

Cannonball3 by the continuous sample pump through an

externally vented sensor compartment cover.

Audible alarm orifice: The audible alarm orifice is located on

the right side of the instrument.

Battery packs: Rechargeable and alkaline battery packs are

inserted at the base of the Cannonball3 and are held in place

with two retention screws.

Handle: The soft rubber handle provides a sure grip in any

condition.

Pump compartment: The sample and dilution diaphragm

pumps are housed in a field-replaceable assembly that is

accessible from the bottom of the instrument.

External filter compartment: The clear plastic compartment

on the front of the Cannonball3 provides visual access to the

filter compartment. When filters appear dirty, a single screw

provides access to the filter compartment for easy filter

replacement in the field.

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