HONEYWELL BW TECHNOLOGIES GASALERT EXTREME CO (01) PDF MANUAL

The GasAlert Extreme gas detector warns of hazardous gas at levels above a factory-set alarm setpoint. It is a personal safety device, not a measurement device. It is your responsibility to respond properly to the alarms.

The detector is available in several models to monitor different gases. The following tables list the available models and the gases they monitor.

Use the detector only as specified in this manual, otherwise the protection provided by the detector may be impaired. Read the Warnings and Cautions before using the detector.

Note: This instrument contains a lithium battery. Do not mix with the solid waste stream. Spent batteries should be disposed of by a qualified recycler or hazardous materials handler.

To avoid possible personal injury, adhere to the following:

• Warning: Substitution of components may impair Intrinsic Safety.

• Warning: To prevent ignition of flammable or combustible atmospheres, disconnect power before servicing.

• Do not use the detector if it is damaged. Before using the detector, inspect the case. Look for cracks and missing parts.

• Use only a sensor specifically designed for the GasAlert Extreme model.

• Do not deactivate the detector during a work shift. Deactivating the detector resets the time-weighted average (TWA), short-term exposure limit (STEL), and maximum gas exposure values to 0.

• Ensure the sensor screen is not blocked.

• If the detector is damaged or parts are missing, contact BW Technologies by Honeywell immediately.

• If the detector has been disassembled, ensure the front and rear shells are properly aligned and fastened before activating the detector.

• BW recommends to bump test the sensor, 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. For detectors with the calibration feature, calibrate the sensor if the reading is not within the specified limits.

• Calibrate the detector before first-time use, and then at least once every 180 days. For HCN detectors, calibrate once every 30 days.

• Use only the Panasonic CR-2PE/BN battery.

• To reduce the risk of ignition of a flammable atmosphere, batteries must only be changed in a safe area free of hazardous gas.

To avoid possible damage to the detector, adhere to the following:

• Do not expose the detector to electrical shock and/or severe continuous mechanical shock.

• The oxygen GasAlert Extreme detector is classified by Underwriters Laboratories Inc. up to an atmosphere of 21% oxygen.

• Do not attempt to disassemble, adjust, or service the detector unless instructions for that procedure are contained in the user manual, and/or that part is listed as a replacement part. Use only BW Technologies by Honeywell replacement parts.

• 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.

The items listed below are included with the detector. If the detector is damaged or parts are missing, contact the place of purchase immediately.

• 3 V lithium Panasonic CR-2PE/BN battery

• GasAlert Extreme O₂ model: O₂ sensor; GasAlert Extreme CO model: CO sensor (low H₂ sensitivity); GasAlert Extreme CO model: CO sensor; GasAlert Extreme H₂S model: H₂S sensor (high range); GasAlert Extreme H₂S model: H₂S sensor; GasAlert Extreme PH₃ model: PH₃ sensor; GasAlert Extreme SO₂ model: SO₂ sensor; GasAlert Extreme Cl₂ model: Cl₂ sensor; GasAlert Extreme NH₃ model: NH₃ sensor; GasAlert Extreme NH₃ model: NH₃ sensor (high range); GasAlert Extreme NO₂ model: NO₂ sensor; GasAlert Extreme HCN model: HCN sensor; GasAlert Extreme ETO model: ETO sensor; GasAlert Extreme ClO₂ model: ClO₂ sensor; GasAlert Extreme O₃ model: O₃ sensor; GasAlert Extreme NO model: NO sensor.

• Test cap and hose

When enabled, the backlight option automatically activates for 3 seconds whenever there is insufficient light to view the LCD. Press and hold any button (until the backlight activates) to activate the backlight for 6 seconds. The detector is shipped with the backlight option enabled.

The backlight does not operate when stealth mode is enabled.

To activate the detector, press ① in a safe area, free of hazardous gas.

When the detector is activated, it performs several self-tests in the following order:

1. Display Elements Test: The LCD displays all screen elements.

2. Alarm Function Test: The detector beeps, the LEDs flash, the backlight activates briefly, and the detector vibrates.

3. Battery Test: The detector tests the batteries. If the battery voltage is too low to continue, the detector performs an automatic shutdown.

4. Date and Time: The LCD displays the current year, month, day, day of the week, and time (hour/minute).

5. Sensor Test: The detector tests the sensor. If the sensor test fails, the detector beeps slowly, the LEDs flash slowly, and ALARM flashes.

6. Gas Type: The LCD displays the type of gas the detector is manufactured to monitor.

7. TWA Alarm Setpoint: The LCD displays the TWA alarm setpoint. (Does not apply to O₂ detectors).

8. STEL Alarm Setpoint: The LCD displays the STEL alarm setpoint. (Does not apply to O₂ detectors).

9. Low Alarm Setpoint: The LCD displays the low alarm setpoint.

10. High Alarm Setpoint: The LCD displays the high alarm setpoint.

11. Calibration Due Test: The LCD displays the number of days remaining before the detector must be calibrated. If calibration is past due, CAL. PAST displays.

12. Bump Test Fail: If a previous bump test failed, the detector beeps, vibrates, and BUMP FAIL displays. The detector then automatically deactivates.

If CAL. PAST displays, press ◯ to acknowledge the warning message. What happens next depends on the detector’s settings:

• Calibration Past Due Disabled: If the detector is not passcode protected, after acknowledging the message, the detector continues the self-test and enters normal operation.

• Calibration Past Due Enabled: If the detector is passcode protected, after pressing ◯ to acknowledge the message, the PASS screen appears. You must enter the correct passcode.

To enter the passcode:

1. Press ▲ or ▼ to scroll to the required passcode.

2. Press ◯ within 10 seconds to confirm the selection. The detector then enters normal operation.

Note: Calibrate the detector before continuing operation. If the passcode is not confirmed within 10 seconds or is incorrect, the detector beeps and flashes eight times, and the LCD displays NO.

If the detector passes the self-test, it enters normal operation. The LCD displays the ambient gas reading.

The detector begins recording immediately. It records the:

• maximum (MAX) gas exposure,

• the short-term exposure levels (STEL), and

• calculates the time-weighted average (TWA).

If the detector fails the self-test, refer to the Troubleshooting section of the manual.

Note: If Deactivation Passcode Protection is enabled, the detector cannot be disabled without entering a passcode first. This option can only be enabled at the factory.

To deactivate the detector, complete the following:

1. Press and hold ① until OFF displays (approximately 5 seconds).

2. The detector beeps and vibrates four times, the LEDs flash four times, and then the detector deactivates.

Note: If ① is not held down until OFF displays, the detector will remain activated.

If deactivation passcode protection is enabled, you will need to enter the security passcode after OFF displays.

The confidence beep provides continuous confirmation that the detector is operating properly by beeping every 5 seconds. The detector is shipped with this feature disabled. Enabling it decreases battery life.

To enable/disable the confidence beep:

1. Ensure the detector is deactivated.

2. Press and hold ◯. While holding ◯, press ①.

When the confidence beep option is enabled, the detector automatically begins beeping when activated. If enabled in stealth mode, the detector vibrates once every 60 seconds.

Note: If the confidence beep is enabled and a low battery alarm occurs, the confidence beep deactivates.

To access the user options menu, complete the following:

1. Press and hold ▲ and ▼ simultaneously until OPTN displays, and then release the buttons. The detector beeps and vibrates four times, and the LEDs flash four times.

2. If passcode protection is not enabled, the EXIT screen automatically displays. If it is enabled, the PASS screen displays. Enter the passcode by using ▲ or ▼ to scroll and ◯ to confirm.

3. From the EXIT screen, press ▲ or ▼ to scroll through the user options.

4. Press ◯ to select a displayed option.

5. After making a change, the detector returns to the EXIT screen. Press ▲ or ▼ to select another option or press ◯ to exit the user options menu and return to normal operation.

Note: As a safety precaution, if an option is not selected within 20 seconds the detector automatically returns to normal operation.

The clock (CLCK) option sets the date and time.

1. From the EXIT screen in the user options menu, press ▲ or ▼ to scroll to the CLCK option.

2. Press ◯ to select the option. The year (last two digits) will begin to flash.

3. Press ▲ or ▼ to scroll to the required value and press ◯ to confirm and move to the next field (month, day, day of week, hour, minute).

To bypass any setting, press ◯. The detector automatically retains the current value and proceeds to the next field.

4. Repeat step 3 for the remaining date/time changes.

5. After setting the minutes, press ▲ or ▼ to select another option or press ◯ to exit the user options menu.

The passcode protection option (PASS) prevents unauthorized access to the user options and calibration functions. The detector is shipped with this option disabled. The passcode is provided on a separate card.

To enable passcode protection:

1. From the EXIT screen in the user options menu, press ▲ or ▼ to scroll to the PASS option.

2. Press ◯ to select the option.

3. Set and PASS continually flash. Press ▲ or ▼ to scroll to the required passcode, and press ◯ to confirm the selection.

4. The ON screen displays and flashes continually. Press ◯ to confirm. The LCD then returns to the EXIT screen.

When the detector is passcode protected, the key icon displays continually. To disable the passcode protection option:

1. Access the user options menu by pressing and holding ▲ and ▼. The OPTN screen displays briefly, followed by the flashing passcode screen (PASS).

2. Press ▲ or ▼ to scroll to the required passcode and press ◯ to confirm. The EXIT screen displays.

3. The key icon indicates that passcode protection is currently enabled. Press ▲ or ▼ to scroll to the PASS option, and press ◯ to select the option.

4. The LCD displays a flashing OFF screen. Press ◯ to confirm the disabling option.

The stealth (STLH) mode option ensures that the detector is undetected in situations that require concealment. This option disables the audible alarms, visual alarms, and backlight. Only the vibrator alarm remains enabled. The detector is shipped with stealth mode disabled.

To enable/disable the stealth mode:

1. From the EXIT screen in the user options menu, press ▲ or ▼ to scroll to the STLH option.

2. Press ◯ to select the option. The LCD flashes either ON or OFF.

3. Press ▲ or ▼ to toggle between the ON/OFF options. Ensure the desired option is displayed and press ◯ to confirm the selection.

If stealth mode has been enabled, the screen displays STLH continually unless functions are being performed, readings are not 0 ppm for toxics, or the reading is not 20.9% vol for oxygen.

Note: The vibrator alarm is disabled at -20°C.

The automatic backlight (BKLT) option enables or disables the backlight of the detector. The detector is shipped with this option enabled. This option is not available when stealth mode is enabled.

To enable/disable the automatic backlight:

1. From the EXIT screen in the user options menu, press ▲ or ▼ to scroll to the BKLT option.

2. Press ◯ to select the option. The LCD flashes either ON or OFF.

3. Press ▲ or ▼ to toggle between the ON/OFF options. Ensure the desired option is displayed and press ◯ to confirm the selection.

The LCD returns to the EXIT screen.

The latch alarm (LTCH) option ensures that an alarm persists until it is acknowledged by the user. If enabled, the low and high gas alarms (audible, visual, and vibrator) will persist until the gas concentration is below the alarm setpoint AND the alarm has been acknowledged by pressing ◯.

The audible alarm can be temporarily deactivated by pressing ◯ for 30 seconds, but the LCD continues to display the peak concentration until the alarm condition no longer exists.

In stealth mode, the detector continues to vibrate until the alarm is acknowledged.

The detector is shipped with the latching alarm option disabled.

To enable/disable the latching alarm option:

1. From the EXIT screen in the user options menu, press ▲ or ▼ to scroll to the LTCH option.

2. Press ◯ to select the option. The LCD flashes either ON or OFF.

3. Press ▲ or ▼ to toggle between the ON/OFF options. Ensure the desired option is displayed and press ◯ to confirm the selection.

The LCD returns to the EXIT screen.

This option is for oxygen detectors only. It enables/disables the automatic oxygen (O₂) calibration, which begins automatically during start-up after the calibration due screen displays. The detector is shipped with this option disabled.

Note: If this option is enabled, ensure the detector is activated in a safe area in normal (20.9%) oxygen atmosphere.

To enable/disable this option:

1. From the EXIT screen of the user options menu, press ▲ or ▼ to scroll to the ACAL option.

2. Press ◯ to select this option. The LCD flashes either ON or OFF.

3. Press ▲ or ▼ to toggle between the ON/OFF options. Ensure the desired option is displayed and press ◯ to confirm the selection.

The LCD returns to the EXIT screen.

The calibration past due (PAST) option enables an automatic shutdown during start-up if the detector is past due for calibration. The detector is shipped with this option disabled.

To enable/disable this option:

1. From the EXIT screen of the user options menu, press ▲ or ▼ to scroll to the PAST option.

2. Press ◯ to select the option. The LCD flashes either ON or OFF.

3. Press ▲ or ▼ to toggle between the ON/OFF options. Ensure the desired option is displayed and press ◯ to confirm the selection.

The LCD returns to the EXIT screen.

The English (ENGL) option enables the LCD to display text in English. If the multi-language option is included, the detector is shipped with English selected as the default language.

To select English:

1. From the EXIT screen of the user options menu, press ▲ or ▼ to scroll to the ENGL option.

2. Press ◯ to select the option. The LCD then displays the English exit screen (EXIT).

3. Press ▲ or ▼ to scroll to another user option or press ◯ to exit and return to normal operation.

The detector has several alarm types to indicate different conditions.

The detector computes and records the following gas exposure values, which are not applicable to Oxygen (O₂) detectors:

To view the gas exposure readings, press ▲ and ◯ simultaneously. The detector displays TWA, STEL, and MAX in sequence. To return to normal operation, press ▲ and ◯ again.

To stop an alarm, move to an area with fresh air. When the gas reading is below the alarm setpoint, the alarm deactivates.

If the latching alarm option is enabled, you must press ◯ to deactivate the alarm after the gas level is safe.

To clear these values, press and hold ◯ for 6 seconds.

Note: Deactivating the detector also clears these values.

The following table lists the default alarm setpoints for various gases. Note that these can be changed by the user.

There are two stages to a low battery alarm.

• First Stage: The detector beeps, flashes, and vibrates once every 5 seconds. The battery icon flashes.

• Second Stage: When the battery is almost depleted, the detector emits continuous beeps, flashes, and vibrations for 30 seconds. The Automatic Shutdown Alarm then activates.

When calibrating the detector, adhere to the following guidelines:

• If passcode protection is enabled, the passcode must be entered before starting calibration.

• A calibration can be canceled at any time. To cancel, press ①. The detector returns to normal operation, but the calibration due date is not updated.

• Use a 0.5 L/min regulator or a demand flow regulator.

• Calibrate only in a normal oxygen atmosphere (20.9% O₂) that is free of hazardous gas.

The test cap is used to apply calibration gas to the detector. To attach the cap:

1. Align the test cap over the sensor screen.

2. Press down firmly until the test cap snaps into place.

3. Attach the hose from the gas cylinder regulator to the test cap inlet.

To perform a full calibration (auto zero and span), follow these steps:

1. Start Calibration: From normal operation, press and hold ▼ and ◯ simultaneously until CAL. displays. Release the buttons.

2. Enter Passcode (if enabled): If passcode protection is enabled, the PASS screen flashes. Use ▲ or ▼ to select the passcode and press ◯ to confirm.

3. Auto Zero: The detector begins the auto zero procedure. The AUTO-ZERO icon and a countdown display. Do not apply gas during this phase.

If the auto zero is successful, the LCD displays the gas cylinder icon and prompts to apply span gas.

If the auto zero fails, the LCD displays NO. Press ◯ to acknowledge. The detector returns to normal operation.

4. Set Span: This step sets the concentration value for the calibration gas. Press ▲ or ▼ to adjust the span value on the screen to match the value on your gas cylinder. Press ◯ to save the value and proceed.

5. Span: Attach the test cap and hose, and apply gas. The gas cylinder icon flashes, and the detector performs the span. When the span is complete, the detector beeps and the LCD displays the calibration due date.

6. Set Calibration Due Date: The detector prompts to set the next calibration due date (e.g., 180 days). Use ▲ or ▼ to change the number of days and press ◯ to confirm.

The detector returns to normal operation.

You can set the alarm setpoints through the calibration mode after the auto zero sequence.

1. Initiate calibration mode by pressing and holding ▼ and ◯ simultaneously until CAL. displays.

2. Complete or bypass the auto zero and span procedures by pressing ◯ to cycle through them.

3. The detector will then display the screens for setting alarm setpoints in the following order: TWA, STEL, Low Alarm, High Alarm.

4. For each setpoint:

a. The current value will be displayed.

b. Press ▲ or ▼ to adjust the value.

c. Press ◯ to save the new value and proceed to the next setpoint.

5. After setting the High Alarm setpoint, the detector will prompt for the calibration due date, and then return to normal operation.

Note: TWA and STEL setpoints are not applicable to O₂ detectors.

To replace the battery or sensor, refer to the following procedure. This must be done in a safe area free of hazardous gas.

1. Deactivate the detector.

2. Using a screwdriver, loosen the two screws from the rear shell.

3. Remove the front shell from the rear shell.

4. To replace the battery: Lift the battery from the rear shell. Install the new battery (Panasonic CR-2PE/BN), ensuring correct polarity.

5. To replace the sensor: Gently slide the sensor out of the sensor compartment in the front shell. Insert the new sensor into the compartment.

6. Reassemble the front and rear shells.

7. Tighten the two screws.

8. Activate the detector and perform a calibration.

Cleaning the Sensor Screen:

1. Disassemble the detector by removing the two screws and separating the front and rear shells.

2. Remove the sensor from the front shell.

3. Remove the sensor screen from the front shell by pressing it out from the front of the shell.

4. Clean the screen with a soft cloth or compressed air.

5. Reinstall the screen and reassemble the detector.

Clearing a Sensor:

After a positive gas exposure, especially to a high concentration, the sensor reading may take a long time to return to zero. To speed up this process, you can clear the sensor by disassembling the detector and leaving the sensor exposed to fresh air for a short period before reassembling.

This instrument contains a lithium battery. Do not mix it with the solid waste stream. Spent batteries should be disposed of by a qualified recycler or hazardous materials handler according to local regulations.

Size: 1.1 x 2.0 x 3.75 in. / 2.8 x 5.0 x 9.5 cm

Weight: 2.9 oz. / 82 g

Operating temperature:

• H₂S: -40 to +122°F / -40 to +50°C

• SO₂: -40 to +122°F / -40 to +50°C

• HCN: -40 to +122°F / -40 to +50°C

• CO: -22 to +122°F / -30 to +50°C

• NH₃: -4 to +104°F / -20 to +40°C

• O₂: -4 to +122°F / -20 to +50°C

• Cl₂: -4 to +122°F / -20 to +50°C

• NO: -4 to +122°F / -20 to +50°C

• NO₂: -4 to +122°F / -20 to +50°C

• PH₃: -4 to +104°F / -20 to +40°C

• ETO: -4 to +104°F / -20 to +40°C

• ClO₂: -4 to +104°F / -20 to +40°C

• O₃: -4 to +104°F / -20 to +40°C

Operating humidity: 15% to 90% relative humidity (non-condensing)

Alarms: Visual, vibrating, audible (95 dB)

Tests: Full function self-test on activation. Sensors, battery and circuitry continuous self-test.

Typical battery life: 1.5 years (typical)

If the multi-language option is included, the detector is shipped with English selected as the default language. To enable the English language option, follow these steps:

1. From the EXIT screen of the user options menu, press the up or down arrow button to scroll to the ENGL option.

2. Press the circle button to select the option. The LCD then displays the English exit screen.

3. Press the up or down arrow button to scroll to another user option or press the circle button to exit and return to normal operation.

The datalogger sampling rate (RATE) option defines how often the detector records a datalog. The rate ranges from 1 to 60 seconds. The detector is shipped with a default sampling rate of 5 seconds. To adjust the rate, complete the following:

1. From the EXIT screen of the user options menu, press the up and down arrow buttons to scroll to the RATE option.

2. Press the circle button to select the option and display the sample rate screen.

3. The sample rate screen displays the current selected rate. Press the up or down arrow button to scroll to a new rate and press the circle button to save the new value.

Note: If a datalogging sample rate value is not selected or confirmed by pressing the circle button within 10 seconds, NO displays and the LCD displays the EXIT screen.

The data transfer (SEND) option transfers the datalog/event log information from the detector to a PC. An IR DataLink (or other BW accessory) is required to transfer the data.

To transfer data, complete the following:

1. Connect the IR DataLink (or other BW accessory) to the detector and the PC.

2. From the EXIT screen of the user options menu, press the up or down arrow button to scroll to the SEND option.

3. Press the circle button to select the option and to access the data transfer option screens.

4. Select one of the following options to transfer data:

– EVNT: Press the up or down arrow to scroll to the event (EVNT) option. Press the circle button to automatically transfer all events.

– LAST: Press the up or down arrow to scroll to the last (LAST) option. Press the circle button to automatically send all of the datalogs since the last datalog download.

– ALL: Press the up or down arrow to scroll to the all (ALL) option. Press the circle button to automatically send all of the datalogs that are saved on the detector.

5. When the data transfer is complete, the detector beeps and vibrates, and the LEDs flash. The LCD displays the EXIT screen.

If the connection between the detector and the IR DataLink is disconnected during a transfer, FAIL displays on the LCD, followed by the EXIT screen.

1. From the PC, save the previously transferred data to ensure that it will not be deleted.

2. Repeat steps #3-5 of the Data Transfer Option.

3. From the detector, select LAST to automatically resume the transfer from where it stopped sending. Or, select ALL to transfer all of the data again.

The following table describes the detector alarms and their corresponding screen displays. During an alarm condition, the detector activates the backlight and the LCD displays the current ambient gas reading.

Note: The high alarm and STEL alarm have the same priority and override a low alarm and/or TWA alarm. To check STEL and TWA alarms specifically, press and hold the circle and up arrow buttons simultaneously. The vibrator alarm is disabled at -20°C.

For Toxic Gases:

1. Press the circle button and up arrow button simultaneously. The LCD displays the TWA gas exposure first.

2. Then the LCD displays the STEL gas exposure.

3. Then the LCD displays the MAX gas exposure.

For Oxygen:

For oxygen detectors, press the circle button and up arrow button simultaneously to view both the maximum low and maximum high levels of oxygen exposure.

*For oxygen, it is the highest or the lowest value from 20.9% encountered.

Warning: To avoid possible personal injury, do not deactivate the detector during a work shift. The detector automatically resets the TWA, STEL, and MAX gas exposures during start-up. If the detector is reactivated during a work shift, the new values will not reflect the entire work shift.

The low and high alarms deactivate when the ambient gas level returns to below the low alarm setpoint.

Note: If alarms are set to latch, the alarms deactivate after the gas concentration is lower than the low alarm setpoint and the alarms have been acknowledged by pressing the circle button.

The TWA and STEL alarms can be stopped either by:

• Clearing the MAX, TWA, and STEL peak exposures.

or

• Deactivating the detector and reactivating it again.

If the detector is passcode protected to prevent deactivation, refer to Deactivation Passcode Protection.

Caution: Follow all safety procedures as defined by your employer. Confirm with your supervisor before clearing TWA and STEL alarms.

The peak gas exposures automatically clear after deactivating the detector.

To clear the MAX, TWA, and STEL peak exposure readings immediately, press and hold the circle button for 6 seconds. The detector beeps and vibrates two times to confirm that the exposures have been cleared.

Caution: Follow all safety procedures as defined by your employer. Confirm with your supervisor before clearing TWA and STEL alarms.

Standard factory alarm setpoints vary by region. The following table lists the factory alarm setpoints. To disable an alarm, set the alarm setpoint to 0.

When calibrating the detector, adhere to the following guidelines:

• Recommended gas mixture:

O₂: clean air, 20.9% vol.

CO (low H₂ sensitivity): 50 to 500 ppm balance N₂

CO: 50 to 500 ppm balance N₂

H₂S (high range): 10 to 100 ppm balance N₂

H₂S: 10 to 100 ppm balance N₂

PH₃: 1 to 5 ppm balance N₂

SO₂: 10 to 50 ppm balance N₂

Cl₂: 3 to 25 ppm balance N₂

NH₃: 20 to 100 ppm balance N₂

NH₃ (high range): 20 to 100 ppm balance N₂

NO₂: 5 to 50 ppm balance N₂

HCN: 5 to 20 ppm balance N₂

ETO: 5 to 50 ppm balance N₂

CIO₂: 0.1 to 1.0 ppm balance N₂

O₃: 0.1 to 1.0 ppm balance N₂

NO: 10 to 250 ppm balance N₂

• Before operating an ETO detector, allow the detector to stabilize at the temperature it will be operating in. After the detector has stabilized, zero the detector.

• It is necessary to periodically re-zero the ETO detector.

• To ensure accurate calibration, BW recommends using a premium-grade calibration gas approved by the National Institute of Standards and Technology (NIST).

• Do not use a gas cylinder beyond its expiration date.

• Before calibrating a new NO or ETO sensor, allow the sensor to stabilize for 2 hours in a safe area that is free of hazardous gas.

• Calibrate a new sensor before use. Allow the sensor to stabilize before starting calibration (used: 60 seconds; new: 5 minutes).

• Calibrate the detector at least once every 180 days (for HCN detectors calibrate at least once every 90 days), depending upon use and sensor exposure to poisons and contaminants.

• Calibrate the detector if the ambient gas display varies at start-up.

• It is best to calibrate the sensor before changing the alarm setpoints.

• Calibrate only in a safe area that is free of hazardous gas.

• To disable an alarm, set the alarm setpoint to zero.

• If a certified calibration is required, contact BW Technologies by Honeywell.

Note: A generator must be used to calibrate O₃ and ClO₂ GasAlert Extreme sensors.

Calibration requires several steps. To quit calibration at any point, press the circle button. The detector retains any saved values and returns to normal operation.

1. Start Calibration:

In a safe area free of hazardous gas, press and hold the circle and down arrow buttons simultaneously. The detector beeps and vibrates four times, and the LEDs flash four times. The CAL screen displays, the detector beeps once, and the auto zero screen displays.

2. Auto Zero:

The LCD flashes AUTO-ZERO while the detector automatically zeroes the sensor. When complete, the detector beeps twice. Do not apply calibration gas until the LCD displays the flashing gas cylinder icon; otherwise, auto zero will fail.

3. Set Span:

The set span function inputs a new calibration gas concentration value. The Set SPAN screen flashes. Press the up or down arrow to scroll to the required gas concentration, which must match the value on the gas cylinder. Press the circle button to save the new value and proceed to the span screen. If not confirmed within 10 seconds, the new value is rejected, NO displays, and the original value is retained.

4. Apply Gas and Span Sensor:

The set span screen displays a flashing gas cylinder icon. Apply the calibration gas to the sensor at a flow rate of 500 ml/min (1000 ml/min for NH₃, Cl₂, and ETO). When the detector senses sufficient gas (approx. 30 seconds), it beeps once. The detector then begins spanning the sensor for the required time:

– NH₃, Cl₂, CIO₂, O₃, and ETO: 5 minutes

– O₂: 30 seconds

– Other gases: 2 minutes (approximately)

The detector beeps three times when the span is complete.

5. Set Calibration Due Date and Alarm Setpoints:

After a successful span, the LCD displays the CAL. DUE screen. You can set the number of days until the next calibration is due (1 to 365). After this, you will proceed to the Set TWA, STEL, LOW, and HIGH alarm setpoint screens. Use the arrow buttons to change values and the circle button to save and proceed to the next screen.

When calibration is complete, the detector beeps and vibrates four times, and the LEDs flash four times before returning to normal operation.

Auto Zero Fail:

If the sensor fails auto zero, the FAIL screen displays. The detector then bypasses the sensor span and proceeds to the alarm setpoints.

1. Press the circle button to exit the alarm setpoint screens and return to normal operation.

2. Restart the calibration procedures in a safe area. If auto zero fails a second time, deactivate and then reactivate the detector to test the sensors.

Unsuccessful Span:

If the detector fails to span a sensor successfully, FAIL displays. The detector vibrates and beeps, and the LEDs flash. Then the detector proceeds to the alarm setpoint screens.

If the span fails, confirm that:

• gas is being applied to the sensor,

• the sensor is detecting a sufficient gas concentration within 30 seconds, and

• the gas concentration has not dropped significantly during the span.

If the span is still unsuccessful, use a new gas cylinder. If it continues to be unsuccessful, replace the sensor.

1. After calibration is complete and the detector is in normal operation, verify calibration by using a gas cylinder other than the one used for calibration.

2. The gas concentration should not exceed the sensor’s detection range. Confirm that the LCD displays the expected concentration values.

3. To ensure that the reading is accurate, apply the verification gas for the same period of time as was applied to the sensor when it was calibrated. For example, if the SO₂ span time was 2 minutes, apply verification gas for 2 minutes.

To maintain the detector in good operating condition, perform the following basic maintenance as required:

• Calibrate, bump test, and inspect the detector at regular intervals.

• Maintain an operations log of all maintenance, calibrations, bump tests, and alarm events.

• Clean the exterior with a soft damp cloth. Do not use solvents, soaps, or polishes.

• Do not immerse the detector in liquids.

Warning: To avoid possible personal injury, adhere to the following:

• Replace the battery in a safe area, free of hazardous gas immediately when the detector enters low battery alarm.

• Use only the Panasonic CR-2PE/BN battery.

• Use only the sensor specifically designed for the GasAlert Extreme model.

• After replacing a sensor, allow the new sensor 5 minutes to stabilize before use. For an ETO or NO sensor, allow 2 hours to stabilize.

• Do not expose a sensor to vapors of organic solvents such as paint fumes or organic solvents.

To Replace the Battery:

1. Deactivate the detector.

2. Remove the four machine screws on the rear shell and remove the rear shell.

3. Remove the battery.

4. Insert the new battery.

5. Re-assemble the detector. Ensure the seal is clean, shells are properly aligned, and torque the screws to 3-4 in-lbs in a crisscross pattern.

To Replace the Sensor:

1. Deactivate the detector.

2. Remove the four machine screws on the rear shell and remove the rear shell.

3. Remove the two machine screws from the PCB.

4. Remove the PCB.

5. Replace the sensor. Gently rock the sensor back and forth to remove a tightly held sensor.

6. Re-assemble the detector, following the same precautions as for battery replacement.

1. Deactivate the detector.

2. Remove the four machine screws on the rear shell and remove the rear shell.

3. Remove the two machine screws from the PCB.

4. Remove the PCB. Place the PCB on a clean surface.

5. Remove the screen.

6. Using a soft, clean brush, wash the screen with clean, warm water.

7. Insert the sensor screen with the shiny side facing the sensor grill. Note: Ensure the screen is dry before inserting it back into the detector.

8. Re-assemble the detector. When re-assembling, ensure the sensor screen is inserted correctly, the seals are clean, and the shells are aligned and properly torqued.

If the detector does not activate, check the following possible causes and solutions:

• No battery: Install a battery.

• Depleted battery: Replace the battery.

• Damaged or defective detector: Contact BW Technologies by Honeywell.

• Reversed battery: Reinstall the battery correctly.

If the detector enters alarm mode immediately when activated, check the following:

• Sensor needs to stabilize: Wait 60 seconds for a used sensor, or 5 minutes for a new sensor.

• Low battery alarm: Replace the battery.

• Sensor alarm: Replace the sensor.

If the start-up self-test fails during one of the checks, consider the following:

• General fault: Contact BW Technologies by Honeywell.

• Alarm setpoints are incorrect: Reset the alarm setpoints.

If a normal ambient gas reading is not displayed after the activation self-test, it could be due to:

• Target gas is present: The detector is operating properly. Use caution in suspect areas.

• Detector requires calibration: Calibrate the detector.

• Sensor not stabilized: Wait 60 seconds for a used sensor, or 5 minutes for a new sensor.

If the detector does not respond to push-buttons, check for the following:

• Battery is depleted: Replace the battery.

• Detector is performing operations that do not require user input: Button operation will restore automatically when the operation ends.

If the detector is not measuring gas accurately, consider these causes:

• Detector requires calibration: Calibrate the sensor.

• Detector is colder/hotter than ambient gas: Allow the detector to acquire ambient temperature before use.

• Sensor screen is blocked: Clean the sensor screen.

If the detector does not enter alarm mode when expected, check for:

• Alarm setpoint(s) are set incorrectly: Reset the alarm setpoints.

• Alarm setpoint(s) set to zero: Reset the alarm setpoints.

• Detector is in calibration mode: Complete the calibration.

If this occurs, consider the following:

• Ambient gas levels are near alarm setpoint or the sensor is exposed to a puff of the target gas: The detector is operating normally. Use caution and check the MAX gas exposure reading.

• Alarms set incorrectly: Reset the alarm setpoints.

• Missing or faulty sensor: Replace the sensor.

This may be due to the automatic shutdown feature being activated because of a depleted battery. Replace the battery.

If the detector will not auto zero or calibrate, or the O₂ sensor reading is erratic, the sensor may be expired. Change the sensor.

Warning: To avoid personal injury or damage to the detector, use only specified replacement parts.

• Instrument dimensions: 2.8 x 5.0 x 9.5 cm (1.1 x 2.0 x 3.75 in.)

• Weight: 82 g (2.9 oz.)

• Intrinsically safe operating temperature: -40 °C to +50 °C (-40 °F to +122 °F)

• Audible alarm: 95 dB at 0.3 m (1 ft.) typical

• Visual alarm: Red light-emitting diode (LED)

• Display: Alpha-numeric liquid crystal display (LCD)

• Sensor type: Plug-in electrochemical cells

• Calibration: Auto zero, set span, and span sensor

• Battery: Panasonic CR-2PE/BN battery

• Battery test: Every 0.5 seconds

• Storage: Maximum of 8 months of data at 5 second intervals (based on a normal workweek).

• Memory Type: Wrap-around memory ensures most recent data is always saved.

• Sample Rate: One reading every 5 seconds (standard).

• Data Recorded: All sensor readings, all alarm conditions, calibrations, event flags, battery status, sensor status, confidence beep activation, and detector status along with the time and date and the detector serial number.

• Indicators: Icon advising datalogger is operating normally.

• Transfer Accessory: IR DataLink or other BW accessory.