Energizer ATX612 User Manual

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P/N 1706-3421 REV 03 Printed 0900-2000 Specifications Subject to Change

1001 Oakdale Road, Oakdale, PA 15071-1500 (412) 788-4353 • Toll Free 1-800-DETECTS FAX 412-788-8353 • Service Dept. 1-888-788-4353

Multi-Gas Monitor

ATX612

Instruction Manual

GUARANTEED.

FOR LIFE.

INDUSTRIAL SCIENTIFIC

CORPORATION

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OUR MISSION

Design - Manufacture - Sell:

Highest quality products

for the preservation of

life and property.

Provide:

Best customer service

available.

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Dear Valued Customer,

Thank you for buying and using Industrial Scientific’s Model ATX612 Multi-Gas Monitor.

Your ATX612 can be relied upon for dependable service, day after day. It has been designed, manufactured, tested and proven under the most scrutinizing conditions possible. With the minimal care and maintenance described in this Instruction Manual, it will provide you with years of reliable monitoring.

I am most concerned that you be pleased with the performance of your ATX612 in the months and years ahead. I urge you to call us with any questions or comments you may have. Often times a phone call and a question can save you hours of frustration. Please never hesitate to contact me at 1-800-DETECTS (338-3287).

All of us at Industrial Scientific appreciate the opportunity to serve you.

Sincerely,

Kent D. McElhattan President & CEO Industrial Scientific Corporation

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Multi-Gas

Monitor

ATX 612

1. W

ARNINGS ANDCAUTIONARYSTATEMENTS

2. U

NPACKINGTHEINSTRUMENT

3. ATX612 F

EATURES

4. I

NSTRUMENTOPERATION

.1 Charging the Battery

4.1.1 Alkaline Battery Option 8

4.2Turning the ATX612 On and Off 8

4.3 Display Backlight 8

4.4 Internal Sampling Pump 8

4.5 Operating Modes 9

4.5.1 Reading 9

4.5.2 Sensor Configuration 9

4.5.3 PPM Hydrocarbon 9

4.5.4 Zero 9

4.5.5 Peak 9

4.5.6 Peak Clear 10

4.5.7 Date 10

4.5.8 Cal Date 10

4.5.9 Log Time 10

4.5.10 TWA 10

4.5.11 STEL 10

4.5.12 Hygiene Reset 10

4.6 Alarm Indicators 10

4.6.1 Low Alarm 10

4.6.2 High Alarm 11

4.6.3 Over-Range Indication 11

4.6.4 Combustible Gas Over-Range 11

4.6.5 Low Battery Warning 11

4.6.6 Battery Failure 12

4.6.7 Fault Indication 12

5. C

ALIBRATING THE

ATX612 12

6. C

HANGINGINSTRUMENTSETTINGS

.1 Setspan

6.2

Alarms

6.3 Code 17

7. H

YGIENE/DATALOGGINGFUNCTIONS

1 Definition of Terms 17

7.1.1 Data Log 17

7.1.2 Period 18

7.1.3 Logging Session 18

7.1.4 Real Time Clock 18

7.1.5 Log Time Clock 18

7.1.6 Calendar 18

7.1.7 TWA 18

7.1.8 STEL 18

7.2 Principles of Operation 18

7.3 Resetting the Hygiene Functions 19

7.4 Downloading the ATX612 19

8. MAINTENANCE 20

8.1 Cleaning 20

8.2 Changing the Battery 20

8.2.1 Replacing the Nicad Battery Module 20

8.2.2 Replacing Alkaline Battery Cells 21

8.3 Opening the Instrument for Service 21

8.4 Installing or Changing Sensors 21

8.4.1 Toxic/Oxygen Sensor Removal/Replacement 22

8.4.2 Combustible Sensor Removal/Replacement 22

8.5 Changing the Internal Filter 22

9. R

EPLACEMENTPARTS

10. S

PECIFICATIONS

11. D

EFAULTALARMSETTINGS

12. ATX612 O

PTIONS

& O

RDERINGINFORMATION

13. W

ARRANTY

TABLE OF CONTENTS

2 3

ARNINGS ANDCAUTIONARYSTATEMENTS

Failure to perform certain procedures or note certain conditions may impair the performance of the instrument. For maximum safety and performance, please read and follow the procedures and conditions outlined below.

Oxygen deficient atmospheres may cause combustible

gas readings to be lower than actual concentrations.

Oxygen enriched atmospheres may cause combustible

gas readings to be higher than actual concentrations.

Calibrate the combustible gas sensor after each incident where the combustible gas content causes the instrument to latch in the OVER-RANGE alarm condition.

Silicone compound vapors may affect the combustible gas sensor and cause readings of combustible gas to be lower than actual gas concentrations. If the instrument has been used in an area where silicone vapors were present, always calibrate the instrument before next use to ensure accurate measurements.

Sensor openings and water barriers must be kept clean. Obstruction of the sensor openings and/or contamination of the water barriers may cause readings to be lower than actual gas concentrations.

Sudden changes in atmospheric pressure may cause temporary fluctuations in the oxygen reading.

Recharge battery only in a non-hazardous location.

Use the RS-232 port only in a non-hazardous location.

Instrument is tested for intrinsic safety in explosive gas/air (21% oxygen) mixtures only.

CAUTION: High Over-Range (+OR) combustible

gas readings may indicate an explosive concentration of combustible gas.

!!!!!!!!!

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4 5

NPACKING THEINSTRUMENT

The shipping box should contain the following items. Account for each item before discarding the box.

QUANTITY PART NUMBER DESCRIPTION

1 1810-2707 ATX612 Multi-Gas Monitor 1 1706-3421 ATX612 Instruction Manual 1 1706-3256 Maintenance Tool 1 1810-0628 Shoulder Strap 1 1810-3077 Charging Adapter

(with Nicad Battery Only)

1 1705-1710 Power Cord

After unpacking, if any listed item is missing, contact either your local distributor of Industrial Scientific products, or call Industrial Scientific Corporation at 1-800-DETECTS (338-3287) in the United States and Canada, or 412-788-4353.

ATX612 F

EATURES

The Industrial Scientific ATX612 Multi-Gas Monitor may be configured to continuously monitor one, two, three or four gases in any combination of the following:

• Oxygen

• Combustible gases (%LEL) or methane (% by volume CH

). User selects %LEL or %CH4prior to calibration.

• Any two of the following toxic gases:

Carbon Monoxide Hydrogen Sulfide Sulfur Dioxide Chlorine Nitrogen Dioxide Chlorine Dioxide

• The ATX612 automatically recognizes and displays the installed sensors when switched on.

• One-Button calibration (microprocessor controlled).

• Built-in pump for remote gas sampling.

• Backlit display for viewing in low light conditions.

• Round-the-clock monitoring capability using the interchangeable rechargeable nickel-cadmium (Nicad) or replaceable alkaline battery packs.

• Plug-in sensors that can be changed or replaced without special tools or soldering equipment.

• 90 dB audible and ultra-bright visual alarm indicators.

• Optional external audible or vibrating alarms.

• High and low alarms for combustible and toxic gases; enrichment and depletion alarms for oxygen.

• User selectable latching alarms.

• User selectable access code for security of calibration and alarm settings.

• Combustible gas OVER-RANGE protection.

• PEAK reading mode.

• Press and hold power switch to prevent accidental turn ON or turn OFF.

• Hygiene/Datalogging option that can be installed by the factory or the customer, to provide short term exposure limit (STEL) and time-weighted average (TWA) readings with 110 hours datalogging capacity.

• The ATX612 is classified as intrinsically safe by the following agencies:

- Underwriters Laboratories (UL).

- Canadian Standards Association (CSA). Canadian

Standards Association has assessed only the combustible gas portion of this instrument for performance.

- Mine Safety and Health Administration (MSHA).

- Workcover Authority, NSW , Australia.

- Department of Mineral Resource, NSW, Australia.

- CENELEC (DEMKO)

NSTRUMENTOPERATION

4.1 CHARGING THE BATTERY

(NICAD BATTERY OPTION)

If the ATX612 is equipped with a Nicad battery pack, fully charge the battery pack before use. A universal charging adapter is included with the unit for charging the ATX612 battery pack. The battery pack may be charged while attached to the instrument or when removed to allow round-the-clock operation of the ATX612 using a spare battery.

The ATX612 is equipped with a nickel-cadmium battery pack with a built-in “smart” charging system. When plugged into the charging adapter, the battery will recharge at a high rate until fully charged and then will reduce to a maintenance trickle charge rate. The battery will not be damaged if it is left connected to the charger for extended periods.

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INDUSTRIAL SCIENTIFIC

ATX612

OXYGEN

LEL

BATT

PPM

ON/OFF MODE

6 7

Hidden (+) Key

Alarm Speaker

On/Off/Mode Key

Ultra-bright Visual Alarm Light Bar

Battery Status Indicator

Hidden (-) Key

Display

Enter/Backlight Key

Charging Socket (Nicad Versions)

Infrared Data Interface

Gas Sample Inlet Fitting

Pump Exhaust Port

Shoulder Strap/ Optional Handle Attachment

Battery Pack Hex Screws

External Alarm Jack

Interchangeable Nicad or Alkaline Battery Pack

A dead battery will be fully recharged in 4.5 hours. The Nicad battery pack has a LED charge status indicator to show the current status when connected to the charger. The LED indicator has five states as follows:

• Solid Amber: Fast charge in progress

• Solid Green: Fully charged, in trickle

charge mode

• Flashing Green: Battery too hot/cold to be

fast charged, in trickle charge mode

• Flashing Amber: Instrument running, fast

charge mode

• Alternating Green/Amber: Trouble, electrical problem

in battery pack

A fully charged Nicad battery pack will typically operate a four-gas configured ATX612 for up to 16 hours. When the instrument is in the normal viewing mode, an eightsegment battery status indicator continuously displays the battery condition. Each segment represents approximately 2 hours of operating time. When the battery is fully discharged, the display will read BATTERY FAIL and the instrument will emit a short beep once a second (See Section 4.6.6). Turn off the instrument and recharge the battery pack when BATTERY FAIL appears.

WARNING: Recharge Nicad battery pack only in a

non-hazardous location.

21.0 0

Figure 1

Figure 2

Figure 3

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8 9

CO H2S 02 LEL

ATX612 VER 1.0

O 0

21.0 0

The remote sample tube should be connected to the barbed inlet fitting on the bottom of the ATX612 (See Figure 3).

NOTE: When drawing a remote sample, allow 2 seconds

per foot (0.3 meter) of tubing length in addition to the normal sensor response time before observing the instrument readings.

The instrument is protected from drawing liquid and dust into the pump and sensors by an internal 1.2 micron dust filter/water stop.

4.5 OPERATING MODES

The ATX612 offers different operating modes to access various instrument features. To scroll through the operating modes, press and release the MODE switch. The operating modes will appear in the following order:

4.5.1 READING

This is the normal operating mode. The current reading of all sensors is displayed along with the graphical battery charge indicator.

4.5.2 SENSOR CONFIGURATION

This mode will display the type of sensor in the position in which it is installed in the instrument.

4.5.3 PPM HYDROCARBON

This mode displays the level of total hydrocarbons with 50 PPM resolution. The PPM reading may be rezeroed at anytime by pressing the enter (E) key. The display will return to the normal operating mode if the gas concentration exceeds the LEL alarm level set in the instrument.

4.5.4 ZERO

This mode allows the user to zero the instrument and calibrate all installed sensors. Refer to Section 5, Calibrating the ATX612, for instruction on the use of the automatic zero and calibration functions.

4.5.5 PEAK

This mode will display the highest level of toxic and combustible gas and the lowest level of oxygen measured since the peak readings were last cleared.

HOLD

RELEASE

4.1.1 ALKALINE BATTERY OPTION

The ATX612 is available with an optional alkaline battery pack which will typically operate continuously for up to 20 hours using 6 C-cell batteries.

WARNING:

Replace alkaline battery cells only in a

non-hazardous location. Use only Duracell, Energizer, Procell, Panasonic, Varta or Kodak C-cell alkaline batteries. Use of another battery type may present a risk of fire or explosion and will violate the intrinsic safety certification of the ATX612.

4.2 TURNING THE ATX612 ON AND OFF

• Press and hold the ON/OFF/MODE switch. The display

will read HOLD and the instrument sounds a short beep once a second.

• Continue holding the MODE switch for 5 beeps until the

RELEASE screen appears. (Stop here if turning the instrument off.)

• After the instrument is turned ON, the following startup

screens will be displayed: SOFTWARE VERSION: The version of the operating

software installed in the instrument is displayed. SENSOR CONFIGURATION. The type of sensors

installed in the instrument will be displayed. WARM-UPTIMER. The display will indicate the

number of seconds remaining until the instrument begins normal operation.

After the warm-up sequence has been completed, the ATX612 will enter the normal operating mode and will be continuously monitoring all calibrated sensors.

4.3 DISPLAY BACKLIGHT

The display backlight is automatically switched on when the ATX612 is in an alarm condition. To manually activate the backlight, press and release the (E) key. The backlight will remain on for approximately 15 seconds.

4.4 INTERNAL SAMPLING PUMP

The ATX612 is equipped with a built-in pump for remote gas sampling. The sampling pump will draw a constant flow sample from up to 100 feet (30 meters) using 1/8 inch (3 mm) diameter tubing.

CO H2S 02 LEL

PPM EXP

ZERO

PRESS

65P 8

19.3K 12

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4.6.2 HIGH ALARM

When a monitored gas concentration reaches the high alarm level setpoint, the instrument emits a continuous dual tone alarm. As with the low alarm condition, the red alarm light bar and backlight will flash simultaneously with the displayed gas value. If the hygiene/datalogging option is installed, the STEL alarm will mimic the high alarm indicator and the STEL display value in alarm will flash.

NOTE: The ATX612 uses the continuous high alarm tone

for both low (depletion) and high (enrichment) oxygen alarm conditions.

4.6.3 OVER-RANGE INDICATION

An over-range condition occurs when a sensor reading exceeds the upper limit of the instrument display range. Over-Range is indicated by +OR in the appropriate sensor display location. With the exception of combustible gas over-range, all over-range conditions will clear automatically when the gas concentrations have decreased to levels within the display range of the instrument.

4.6.4 COMBUSTIBLE GAS OVER-RANGE

When the ATX612 detects combustible gases in excess of 100% of LEL (5% CH4 by volume), a high alarm condition is latched (locked on) and +OR is displayed in place of the combustible gas reading. Power is removed from the combustible gas sensor to prevent damage due to the high level of combustible gas.

To clear the combustible gas over-range alarm:

• Exit the hazardous area immediately.

• Press (E) key in clean air.

NOTE: When the instrument is turned on, the combustible

gas level must be less than 100% of LEL (5% CH

) to clear the combustible gas over-range

condition.

4.6.5 LOW BATTERYWARNING

With 15-60 minutes of run time remaining, the ATX612 will emit a short beep once every 60 seconds and the battery status indicator will be replaced with a flashing “B” to indicate the low battery condition.

NOTE: The length of warning time will increase when

there is no combustible gas sensor installed in the instrument.

4.5.6 PEAK CLEAR

This mode will clear all stored peak readings from the instrument. Press enter (E) to clear the peak readings. The display will return to the PEAK mode and indicate that the peak readings have been reset.

If the hygiene/datalogging option is installed, the following operating modes may also be accessed. See Section 7, Hygiene/Datalogging Functions, for further instructions.

4.5.7 DATE

This screen allows the user to see the current date (month/day).

4.5.8 CALDATE

This mode allows the user to see the date the instrument was last calibrated.

4.5.9 LOG TIME

This mode allows the user to view the current real time (RT) and the length of time that data has been recorded in the current session (LT).

4.5.10 TWA (Time-Weighted Average)*

This mode displays the current time-weighted average exposure values of the toxic sensors.

4.5.11 STEL (Short Term Exposure Limit)*

This mode displays the short term average exposure values of the toxic sensors installed in the instrument.

4.5.12 HYGIENE RESET

This mode allows the user to reset the hygiene session and the STEL and TWA exposure values.

4.6 ALARM INDICATORS

4.6.1 LOW ALARM

When a monitored gas concentration reaches the low level alarm setpoint, the instrument emits a short beep approximately every 1.2 seconds. The red alarm light bar and backlight will flash simultaneously along with the displayed gas value. If the hygiene/datalogging option is installed, the TWA alarm will mimic the low alarm indicator and the TWA display value in alarm will flash.

CALDATE

5/13

RT06:45 LT01:15

0 0

TWA

0 0

STEL

+OR 0

21.0 0

HYGIENE

PRESS

DATE

5/21

O 0

21.0 +OR

21.0 0

TWA and STEL readings do not apply to oxygen and combustible gas exposure.

PK CLR

PRESS

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ZERO

PRESS

ZEROING

21.0 02 CAL

4.6.6 BATTERY FAILURE

When the battery has insufficient charge to operate the instrument, “BATTERY FAIL” is displayed. The visual alarm will be activated and the instrument will emit a short beep once every second for approximately 30 seconds after which the instrument will turn itself off. Recharge or replace the battery (See Section 8.2).

4.6.7 FAULT INDICATION

The ATX612 will emit a short beep once a second if a newly installed sensor does not agree with the previous sensor type for that position. The corresponding display position will be blank. This fault indication also occurs when a sensor becomes disconnected or a combustible sensor fault is detected during normal operation. Installed sensor types are accepted and displayed only after a successful calibration has been completed.

The sampling pump system is equipped with a low flow detection alarm. Alow flow alarm condition will occur if the dust filter/water stop becomes clogged or the sample line becomes blocked in any way. The instrument will sound a continuous tone, the red alarm light bar will flash and the display will read PUMP FAULT. If this should occur, replace the dust filter/water stop immediately (See Section 9). The unit will not operate and a low flow alarm condition will remain if the dust filter/water stop is removed from the instrument. The PUMP FAULT alarm will be reset once the obstruction has been cleared from the sample line.

ALIBRATING THE

ATX612

BATTERY FAIL

PUMP FAULT

If an instrument fails to operate properly following any functional “bump” test, a full instrument calibration should be performed prior to use.

Calibration is most accurate when the instrument has been in a stable temperature environment for at least one hour prior to calibrating.

NOTE: Instrument zero and oxygen span calibration

should be performed in clean air containing

20.95% (21%) oxygen. If you are measuring a known combustible gas, use a known concentration of that gas for calibration. For general combustible gas measurement, Industrial Scientific Corporation recommends calibrating to pentane in the 15-50% LEL range. The measured LEL concentration of gases other than the calibration gas may not correspond on a one-toone basis with the monitor reading. Always use teflon or teflon-lined tubing when calibrating.

The ATX612 utilizes a one-button calibration system. When using multi-gas cylinders, a full instrument calibration can be performed in a single step. Multi-gas cylinders are available for the most common instrument configurations.

To calibrate the ATX612:

• From the normal READING mode, press the MODE switch twice to access the ZERO operating mode.

• Press the (E) key to start the instrument zeroing process. The instrument display will indicate ZEROING.

• When zeroing is complete the instrument display will indicate O2 CAL and will show the current full span value of the oxygen sensor. The oxygen sensor will be calibrated to 21.0 in approximately 30 seconds.

Instrument zeroing and oxygen calibration may be aborted at any time by pressing the MODE switch.

NOTE: Zeroing the instrument in clean air is preferred,

provided that there is no trace of toxic or combustible gas. If the air purity is uncertain, use a cylinder of zero grade air to zero the instrument and span the oxygen sensor.

• At the completion of the oxygen sensor calibration, the instrument will emit a short beep and the display will indicate GO CAL. The message PRESS (E) to CAL will scroll across the bottom of the display. Press (E) to continue calibrating the remaining sensors. If you ignore this message the instrument will return to the normal operating mode in approximately eight seconds.

The ATX612 is a potential life saving device. Recognizing this fact, Industrial Scientific Corporation recommends that a functional (“bump”) test be performed on every instrument prior to each use. Afunctional test is defined as a brief exposure of the monitor to a known concentration of gas(es) for the purpose of verifying sensor and alarm operation. It is not intended to be a measure of the accuracy of the instrument.

Industrial Scientific also recommends that a full instrument calibration be performed using a certified concentration(s) of calibration gas(es) monthly to ensure maximum accuracy.

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CODE 0

PRESS

• To continue full calibration, press (E) and the instrument will display the first sensor to be calibrated along with the calibration gas setting. The message APPLY CAL GAS will scroll across the bottom of the display.

NOTE: If the gas concentration does not match the

setting, press the MODE switch to abort calibration. See Section 6.1, SETSPAN to change the calibration gas settings.

NOTE: APPLY CAL GAS means connect the sample

tubing to the appropriate calibration gas cylinder with either a ILPM or preferrably a demand flow regulator. Connect the tubing to the gas sample inlet of the ATX612. Turn on gas supply.

• Apply the calibration gas. The instrument will wait for five minutes to sense that calibration gas has been applied before aborting and failing calibration. When the sensor detects a gas concentration greater than 50% of the calibration gas value, the display will indicate the current full span value for that sensor. The message CAL IN PROGRESS will scroll across the bottom of the display.

• When calibration of the sensor has been successfully completed, the instrument will automatically step to the next sensor to be calibrated and the preceding step will be repeated.

• When all sensors have been calibrated successfully the instrument will emit a short beep and the sensor configuration will be shown on the display.

• If calibration results in marginal sensor span values, sensor identifiers will flash on the display. Marginal calibration will occur if the sensor full span value is less than 70% of the applied gas concentration. Amarginal sensor calibration may be an early warning sign that the sensor will soon need to be replaced.

NOTE: If the sensor full span value is less than 50% of

the calibration gas value, calibration will fail and the instrument will immediately return to the real time READING mode. When failed calibration or low sensitivity is indicated, verify that the calibration cylinder has not emptied or that the cylinder expiration date has not passed.

• After displaying the sensor configuration, the instrument will automatically return to the real time READING mode.

HANGINGINSTRUMENTSETTINGS

Instrument settings, including alarm values, calibration gas concentrations and security code, may only be accessed and changed during the instrument startup sequence.

The (+) and (-) hidden keys are used to set instrument alarm and calibration values. Refer to page 6, Figure 1 for the location of the hidden keys.

To access the instrument menus:

• Turn the ATX612 off and back on again.

• When the display shows the warm up timer, press the plus (+) and minus (-) keys simultaneously.

If the instrument security code has been set to a value other than “0”, the CODE screen will be displayed along with the scrolling prompt PRESS (+) OR (-) TO SET (E) TO ENTER. Use the (+) and (-) keys to input the correct security code value and press (E). When the correct code has been entered successfully, the instrument will immediately enter the settings mode.

The settings mode consists of three functions: SETSPAN

ALARMS CODE

The scrolling prompt, PRESS (+) FOR NEXT (E) TO SELECT appears on each screen. Press the (+) to step through the list and (E) to select any of the functions. Pressing the MODE switch at any one of the functions will cause the instrument to return to the normal operating mode.

6.1 SETSPAN

The SETSPAN function allows the user to set the combustible sensor monitoring range to either LEL or CH

and to set the calibration gas values for the combustible and toxic sensors.

GO CAL

PRESS

25 LEL

APPLY

SETSPAN

PRESS

Page 11

CODE

PRESS

CODE 123

PRESS

• Press (+) to step to the INSTANT function and set instantaneous alarm values. The display will indicate INSTANT along with the scrolling prompt PRESS (+) FOR NEXT (E) TO SELECT.

• Press (E) to enter the instantaneous alarms function. The display will show the first alarm to be set along with the scrolling prompt PRESS (+) FOR NEXT (E) TO SELECT. The alarm type will be indicated on the display as either high (H) or low (L).

• Press (E) to select the desired alarm to be changed. The display will flash the current alarm value along with the prompt PRESS (+) OR (-) TO SET (E) TO SELECT.

• Press the (+) and (-) keys to set the desired alarm value and (E) to enter the value into memory.

• Press MODE to return to the INSTANT function.

• Press (+) to step to the TWA and STEL alarm functions. The TWA and STEL alarm values are set as previously described.

6.3 CODE

The CODE function allows the user to select a security code to protect calibration and all instrument alarm settings. When the code is set to any value other than “0”, the user will be prompted to enter the proper code prior to entering the settings or calibration modes.

• Press (+) to step from the ALARMS function to the CODE function.

• Press (E) to enter the code function. The display will show the current code setting along with the scrolling prompt PRESS (+) OR (-) TO SET (E) TO ENTER.

• Press the (+) and (-) keys to set the code to any value between 0 and 999, and (E) to enter the value into memory.

• Press MODE to return to the CODE function.

YGIENE/DATALOGGINGFUNCTIONS

7.1 DEFINITION OF TERMS

7.1.1 DATA LOG

The record of measured gas concentrations, including time and date, stored in the instrument’s electronic memory.

LEL

PRESS

25 LEL

PRESS

ALARMS

PRESS

LATCH

INSTANT

PRESS

10L LEL

PRESS

LATCH

PRESS

OFF

PRESS

• Press (E) to enter the SETSPAN function. The display will show LEL along with the prompt PRESS (+) TO CHANGE.

• Press (+) to toggle between LEL and CH

combustible

sensor span ranges.

• Press MODE to enter the calibration gas values for all sensors. The display will show the first span value, eg. 25 LEL, along with the prompt PRESS (+) FOR NEXT (E) TO SELECT.

• Press (E) to select the value you wish to change. The display will flash the current gas value and will scroll the prompt PRESS (+) or (-) TO SET (E) TO ENTER.

• Press the (+) and (-) minus keys to set the desired calibration gas value and (E) to enter the value into memory. Once the value has been entered into memory, it will become the standard gas value used during instrument calibration.

• Press the MODE switch to return to the SETSPAN function.

6.2 ALARMS

The ALARMS function allows you to set the values for the HI and LOW alarms for each installed sensor. Default alarm settings for each gas are listed in Section 11. If the hygiene/datalogging option is installed, you will also be able to set the STEL and TWA alarm values.

• Press (+) to step from the SETSPAN function to the ALARMS function.

• Press (E) to enter the ALARMS function. The LATCH function will lock the alarm indicators on when a monitored gas concentration reaches the high alarm setpoint. The alarm will reset after the gas concentration has fallen below the alarm setpoint and the user has pressed the (E) key. The display will indicate LATCH along with the scrolling prompt PRESS (+) FOR NEXT (E) to SELECT.

• Press (E) to select the LATCH function. The display will indicate LATCH along with the prompt PRESS (+) FOR NEXT (E) TO SELECT.

• Press (E) to set the ATX612 high alarm latch as ON or OFF. Press MODE to return to the LATCH screen.

Page 12

18 19

The datalogging section of the instrument is always powered and a battery backup circuit protects it from loss of data for up to 40 minutes during battery changes.

NOTE: The instrument must be stored on a battery

charger when not in use to prevent loss of data due to battery discharge.

7.3 RESETTING THE HYGIENE FUNCTIONS

NOTE: If you are using the datalogging feature, be sure

the correct date and time are programmed by checking/setting the Real Time Clock and Calendar using the optional ATX Hygiene/Datalogging Software.

• Press MODE repeatedly to step to the HYGIENE screen.

• Press (E) to reset the hygiene function and begin a new datalogging session.

The instrument display will return to the LOG TIME mode and the display will indicate that the log time (LT) will be reset to 00:00. The TWA and STEL values for all toxic sensors will also be reset to zero.

If there is insufficient memory to log approximately 12 hours of data when the hygiene function is reset, the real time clock value will be displayed as RTOR:OR.

When the memory is full, both the real time and log time will be displayed as OR:OR. At this time, the data may be cleared by performing a hygiene reset as described above. All currently stored data will be overwritten. The stored data may be down-loaded using the ATX hygiene/datalogging software.

7.4 DOWNLOADING THE ATX612

To connect the ATX612 for downloading data to the PC:

• Start the datalog software on the PC.

• Connect the interface cable to the infrared data port on the bottom of the ATX612.

• Select CONNECT from the menu on the datalog software.

• Turn on the instrument when prompted.

• The ATX612 will show CONNECT and the instrument will begin communicating with the PC.

RT06:45 LT00:00

RTOR:OR LT00:00

RTOR:OR LT0R:0R

7.1.2 PERIOD

The logging time that begins when the instrument is turned on and initiates normal operation and lasts until the instrument is turned off.

7.1.3 LOGGING SESSION

One or more periods of normal instrument operation between hygiene function resets.

7.1.4 REALTIME CLOCK

The internal clock that maintains the current time.

7.1.5 LOG TIME CLOCK

The running clock that monitors the length of time logged during a session.

7.1.6 CALENDAR

A part of the real time clock that maintains the current date.

7.1.7 TWA (TIME-WEIGHTED AVERAGE)

The accumulated gas exposure averaged over a predetermined time, typically eight hours.

7.1.8 STEL(SHORT TERM EXPOSURE LIMIT)

The accumulated gas exposure value averaged for the proceeding fifteen minutes.

7.2 PRINCIPLES OF OPERATION

If the ATX612 is equipped with the hygiene/datalogging option, all sensor readings are sent to the hygiene module. Once every minute the readings are averaged, saved to the memory and the TWA and STEL values are calculated for the toxic sensors. The TWA and STEL values are then tested for possible alarm conditions.

The default time base for calculating TWA values is eight hours. However, the time base may be changed to any value in the range from one to 40 hours using the optional ATX Hygiene/Datalogging Software and a personal computer.

The instrument memory provides storage capacity for approximately 110 hours of logged data in an instrument with four sensors installed.

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20 21

• Remove the battery pack from the instrument as described in Section 8.2.

• Remove the two screws which hold the battery module in place as shown in Figure 4.

• Lift the Nicad battery module from the battery pack.

• Place the new Nicad module in the battery pack.

• Replace the two screws which hold the Nicad module in place.

8.2.2 REPLACING ALKALINE BA TTERYCELLS

The alkaline battery pack holds 6 C-cell batteries. To replace the alkaline battery cells:

• Remove the battery pack from the instrument as described in Section 8.2.

• Remove the alkaline cells from the battery pack.

• Insert the new cells making sure to observe proper polarity.

NOTE: Proper polarity of the alkaline battery cells is

identified by the molded “+” and “-” symbols in the bottom of the battery pack. In addition the positive (+) battery contact is identified by the red polarizing tab.

8.3 OPENING THE INSTRUMENT FOR SER VICE

To open the instrument for service:

• Remove the battery pack as described in Section 8.2.

• Remove the four screws from the bottom of the instrument chassis.

• Gently lift the case top from the chassis.

8.4 INSTALLING OR CHANGING SENSORS

To change sensors in the ATX612:

• Open the instrument as described in Section 8.3.

• Remove the three screws which hold the sensor manifold in place.

• Gently lift the sensor manifold away from the chassis as shown in Figure 5.

NOTE: It is not necessary to disconnect the sample tubing

from the manifold to replace the sensors.

8.1 CLEANING

Wipe the outside of the instrument with a soft, clean cloth. Never use solvents or cleaning solutions of any type.

8.2 CHANGING THE BATTERY PACK

To change the ATX612 battery pack:

• Hold the instrument with battery pack facing up.

• Using the maintenance tool provided with the instrument, turn counter-clockwise and loosen the two hex screws in the battery pack.

• Remove the battery pack. (See Section 8.2.1 for instructions of replacing the Nicad battery module)

• Place the battery pack on the instrument.

• Turn the hex screws clockwise until the screws are tight and reach the stops. DO NOT OVER TIGHTEN.

8.2.1 REPLACING THE NICAD BA TTER YMODULE

The Nicad cells within the battery pack may be replaced when necessary by installing a new Nicad battery module. To replace the Nicad battery module:

Figure 5

Figure 4

Battery Pack Hex Screws

Nicad Battery Module

Battery Pack

AINTENANCE

Page 14

ITEM PART NUMBER DESCRIPTION (QTY)

1 1705-8868 Main PC Board (1) 2 1705-6755 Display PC Board (1) 3 1705-9247 Interface PC Board (1) 4 1705-9031 Chassis (1) 5 1706-3447 Pump Assembly (1) 6 1705-9494 Nicad Battery Pack

or 1705-9312 Alkaline Battery Pack

7 1706-0716 Case Gasket (1) 8 1706-2498 Filter Housing (1) 9 1705-8157 Dust Filter/Water Stop (1.2 Micron) (1)

10 1705-7118 Speaker (1)

11 1705-8660 Speaker Gasket (1) 12 1705-8140 Speaker Water Barrier (1) 13 1706-0674 Sensor Manifold (1) 14 1702-8374 External Alarm Jack (1) 15 1705-0295 RFI Screen (1) 16 1706-1284 Case Top (1) 17 1705-8306 Key Pad (1) 18 1706-0500 Alarm Lens (1) 19 1705-8652 Alarm Lens Gasket (1)

The following items numbers refer to the exploded view drawing on pages 24 and 25.

EPLACEMENTPARTS

WARNING: When removing a sensor from

service, the appropriate sensor plug must be installed to ensure proper instrument operation. Toxic/O

Sensor Plug P/N 1704-6947 Combustible Sensor Plug P/N 1706-2647

8.4.1 TOXIC/OXYGEN SENSOR REMOVAL/ REPLACEMENT

• To remove a toxic or oxygen sensor, grasp the sensor

and lift it straight up. Use care to avoid bending the sensor pins.

WARNING: When removing a toxic sensor for

storage, connect a shorting wire to the two pins as shown.

• New toxic sensors are shipped with a shorting wire

attached. Remove the shorting wire from the new

sensor.

• Immediately install the sensor in the instrument. Never

apply pressure to the area inside of the black O-Ring seal at the top of the sensor.

8.4.2 COMBUSTIBLE SENSOR REMOVAL/ REPLACEMENT

• To remove the combustible sensor, grasp the sensor and

lift it straight up.

• Press the new sensor firmly into the sockets on the

PC board.

8.5 CHANGING THE INTERNAL FILTER

If the internal dust filter/water stop becomes blocked, a PUMP FAULT alarm will result. The filter must be replaced immediately before continuing operation. To remove and replace the internal dust filter/water stop from the instrument:

• Unscrew and remove the knurled sample inlet fitting from

the instrument as shown in Figure 6.

• Grasp the dust filter/water stop from the instrument and

pull straight out to remove.

• Replace the dust filter/water stop making sure that the

larger diameter opening of the filter is facing inward.

• Replace the knurled sample inlet fitting.

NOTE: The ATX612 will remain in a PUMP FAULT

condition if operation is attempted with the dust filter/water stop removed.

Shorting Wire

Figure 6

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2726

11.

EFAULTALARMSETTINGS

GAS LOW ALARM HIGH ALARM

19.5% 23.5% LEL 10% 20% CH

1.0% 1.5% CO 35 PPM 70 PPM H2S 10 PPM 20 PPM SO

2.0 PM 4.0 PPM NO

3.0 PPM 6.0 PPM Cl

0.5 PPM 1.0 PPM ClO

0.3 PPM 1.0 PPM

NOTE: Factory alarm settings may not coincide with

local regulations. Consult all appropriate local regulations for appropriate alarm settings in your region.

10.

PECIFICATIONS

CASE: Type 304 Stainless Steel DIMENSIONS: 8.2

”L x 3.7”W x 3.2”H

(208 X 94 X 81 mm)

EIGHT

: 3.4 lbs (1.5 kg)

ENSORS

: Combustible Gases and Methane-

Catalytic Oxygen and Toxic GasesElectrochemical

EASURINGRANGE

LEL (Combustible Gases)

0 to 100% LEL in 1% increments

CH4(Methane)

0 to 5% of volume in 0.1% increments

O2(Oxygen)

0 to 30% of volume in 0.1% increments

CO (Carbon Monoxide)

0 to 999 PPM (parts per million) in 1 PPM increments

H2S (Hydrogen Sulfide)

0 to 999 PPM (parts per million) in 1 PPM increments

SO2(Sulfur Dioxide)

0 to 99.9 PPM (parts per million) in 0.1 PPM increments

NO2(Nitrogen Dioxide)

0 to 99.9 PPM (parts per million) in 0.1 PPM increments

C12(Chlorine)

0 to 99.9 PPM (parts per million) in 0.1 PPM increments

C1O2(Chlorine Dioxide)

0 to 99.9 PPM (parts per million) in 0.1 PPM increments

OWERSOURCE

: Rechargeable, replaceable nickel-cadmium battery

pack, or replaceable cell alkaline battery pack

ATTERYLIFE

: With Nicad Battery Pack - 16 hours typical

With Alkaline Battery Pack - 20 hours typical

EADOUT

: Alpha-Numeric Liquid Crystal Display

TEMPERATURE RANGE: -

20ºC to 50ºC (-4

ºF to 122ºF

)

With H2S Sensor -40ºC to 50ºC (-40ºF to 122ºF)

HUMIDITY RANGE: 0% to 99% RH (Non-condensing) STORAGE TEMPERATURE: 0ºC to 20ºC (32ºF to 68ºF)

PART NUMBER DESCRIPTION (QTY)

1705-0788-PPM Combustible Sensor 1705-0129 Oxygen Sensor 1704-1898 Hydrogen Sulfide Sensor 1704-1880 Carbon Monoxide Sensor 1704-1914 Chlorine sensor 1704-4204 CLO

sensor 1704-1922 Nitrogen Dioxide Sensor 1704-1906 Sulfur Dioxide Sensor 1810-1386 Stainless Steel Extendible Probe - 6ft. 1810-1428 Polycarbonate Probe 1705-9494 Rechargeable Nicad Battery Pack 1705-9312 Replaceable Alkaline Battery Pack (6 C-cell) 1810-3259 Leather Carrying Case for ATX612 1810-0628 Shoulder Strap 1810-2921 Carrying Handle for ATX612 1810-1154 External Audible/V isual Alarm 1810-2146 External Vibrating Alarm 1810-2187 Cylinder Cal. Gas, H

S, CO, Pentane and Oxygen 1810-1576 Cylinder, Cal. Gas, Carbon Monoxide, Pentane and Oxygen 1810-2165 Cylinder, Cal. Gas, Carbon Monoxide, Methane and Oxygen 1810-1584 Cylinder, Cal. Gas, Zero Air 1810-2222 Cylinder, Cal. Gas, 5 PPM Sulfur Dioxide 1810-1758 Cylinder, Cal. Gas, 10 PPM Chlorine 1810-2219 Cylinder, Cal. Gas, 5 PPM Nitrogen Dioxide 1810-2509 Demand Flow Regulator with Pressure Gauge

12.

ATX612 O

PTIONS

& O

RDERINGINFORMATION

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Industrial Scientific portable gas monitoring instruments are warranted to be free from defects in material and workmanship for as long as the instrument is in service.

The above warranty does not include sensors, battery packs, internal pumps or filters, all of which are warranted to be free from defects in material and workmanship for eighteen months from the date of shipment, or one year from the date of first use, whichever occurs first, except where otherwise stated in writing in Industrial Scientific literature accompanying the product.

All other Industrial Scientific products are warranted to be free from defects in material and workmanship for a period of eighteen (18) months from the date of shipment, or one (1) year from the date of first use, whichever occurs first, except where otherwise stated in writing in Industrial Scientific literature accompanying the product.

LIMITATION OF LIABILITY

INDUSTRIAL SCIENTIFIC MAKES NO OTHER WARRANTIES, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE.

SHOULD THE PRODUCT FAILTO CONFORM TO THE ABOVE WARRANTY, BUYER’S ONLY REMEDY AND INDUSTRIAL SCIENTIFIC’S ONLY OBLIGATION SHALL BE, AT INDUSTRIAL SCIENTIFIC’S SOLE OPTION, REPLACEMENT OR REPAIR OF SUCH NON-CONFORMING GOODS OR REFUND OF THE ORIGINAL PURCHASE PRICE OF THE NON-CONFORMING GOODS. IN NO EVENT WILL INDUSTRIAL SCIENTIFIC BE LIABLE FOR ANY OTHER SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING LOSS OF PROFIT OR LOSS OF USE, ARISING OUT OF THE SALE, MANUFACTURE OR USE OF ANYPRODUCTS SOLD HEREUNDER WHETHER SUCH CLAIM IS PLEADED IN CONTRACT OR IN TORT, INCLUDING STRICT LIABILITY IN TORT.

13.

ARRANTY

It shall be an express condition to Industrial Scientific’s warranty that all products be carefully inspected for damage by Buyer upon receipt, be properly calibrated for Buyer’s particular use, and be used, repaired, and maintained in strict accordance with the instructions set forth in Industrial Scientific’s product literature. Repair or maintenance by non-qualified personnel will invalidate the warranty, as will the use of non-approved consumables or spare parts. As with any other sophisticated product, it is essential and a condition of Industrial Scientific’s warranty that all personnel using the products be fully acquainted with their use, capabilities and limitations as set forth in the applicable product literature.

Buyer acknowledges that it alone has determined the intended purpose and suitability of the goods purchased. It is expressly agreed by the parties that any technical or other advice given by Industrial Scientific with respect to the use of the goods or services is given without charge and at Buyer’s risk; therefore, Industrial Scientific assumes no obligations or liability for the advice given or results obtained.