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Training Bulletins - Newman > TB 150 Dräger X - am 5000 Combustible Gas Indicator > Flashcards

TB 150 Dräger X - am 5000 Combustible Gas Indicator Flashcards

1
Q

TB 150 Dräger X

It is equipped with 4 gas-specific sensors?

A

carbon monoxide (CO)

oxygen (O2)

hydrogen sulfide (H2S)

hydrogen cyanide (HCN)

fifth catalytic sensor for explosive vapors.

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2
Q

TB 150 Dräger X

The X-am 5000 is a passive monitor meaning it does not have a mechanical pump to draw in air samples.

Therefore, it is extremely important to move the meter high, low, left and right as you monitor an unknown atmosphere.

A

reference

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3
Q

TB 150 Dräger X

The X-am 5000 is intrinsically safe, resistant to electromagnetic interference, water, dust, impact and vibrations.

A

reference

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4
Q

TB 150 Dräger X

Before and after every use, the meter needs to be exposed to fresh air.

Fresh air calibrations are performed in the field by emergency responders, and gas-specific calibrations are performed by HazMat Squad personnel every ___ months and anytime the meter’s start-up self test indicates a sensor problem.

A

6

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5
Q

TB 150 Dräger X

The X-am 5000 displays in ppm.

A

reference

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6
Q

TB 150 Dräger X

symbol x in the upper right corner signifies a system failure in the unit. THE METER MUST NOT BE USED IF THE x SYMBOL IS DISPLAYED IN THE UPPER RIGHT CORNER OF THE SCREEN.

A

reference

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7
Q

TB 150 Dräger X

The combustible gas sensor is calibrated to methane but it will detect all explosive hydrocarbon atmospheres such as pentane, butane, propane etc. and will display those readings in the display for methane.

The readings displayed for methane will only be accurate if the gas in the atmosphere is actually methane; otherwise the readings only indicate the presence of a potentially flammable gas.

A

reference

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8
Q

TB 150 Dräger X

The combustible gas sensor may display incorrect readings in oxygen-poor atmospheres with less than ___% oxygen.

A

10

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9
Q

TB 150 Dräger X

The manufacturer does not guarantee this device to be intrinsically safe in oxygen-enriched atmospheres with greater than ___% oxygen. IMMEDIATELY LEAVE ANY AREA WITH OXYGEN READING GREATER THAN 23.5%, THERE IS DANGER OF EXPLOSION!

A

23.5

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10
Q

TB 150 Dräger X

DO NOT STORE NEAR OR USE SILICONE SPRAY ON THIS METER CGI’s

A

reference

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11
Q

TB 150 Dräger X

The flammability range of methane is between 5%-15%

The X-am 5000 is set to alarm at ___% of the LEL for the A1 alarm and alarm at ___% of the LEL for the A2 alarm.

A

10

20

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12
Q

TB 150 Dräger X

Turning on

Press and hold the OK key for approximately ___ seconds until the countdown » 3 . 2 . 1 « shown in the display has expired,

A

3

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13
Q

TB 150 Dräger X

Switching off the device

Press and hold the OK and + keys at the same time until the countdown » 3 . 2 . 1 « shown in the display has elapsed.

A

reference

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14
Q

TB 150 Dräger X

The following must be done before the meter is used:

  • Check for warning symbol (!) – The device can be operated normally with the warning symbol on the display. If the warning symbol does not disappear automatically during operation, contact the closest HazMat Squad to evaluate/calibrate the meter.
  • Check for fault message symbol - The device is not ready to measure, shall not be used at an incident and requires further maintenance, contact the closest HazMat Squad to evaluate/calibrate the meter.
  • Perform a fresh air calibration.
  • Clear the peak values.
  • Check that the gas sensor area is not occluded, i.e. debris, tape, plastic bag, etc.
A

reference

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15
Q

TB 150 Dräger X

If atmospheric conditions cause the meter to alarm while using the instrument as a personal or area monitor, leave the area immediately.

A

reference

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16
Q

TB 150 Dräger X

Calling the information mode

While in measuring mode, press the OK key for approximately 2 seconds. Peak values will be displayed. Peak values are the highest readings the meter has been exposed to since the last time the values were cleared.

A

reference

17
Q

TB 150 Dräger X

Clearing peak values

Peak values must be cleared prior to using this device at an incident. Peak value readings must be documented following an incident and prior to clearing those values.

  • While in the measuring mode, depress the + button 3 times.
  • Select the icon from the quick menu by pressing the + key then the OK key.
  • The peak values will be displayed and can be cleared by depressing and holding the OK key for approximately 5 seconds.
A

reference

18
Q

TB 150 Dräger X

Sensors which

have not warmed up or which are faulty will prevent the fresh air calibration and the unit will display the message 159 with the symbol (!) signifying a warning message.

  • After the meter has warmed up depress the + button 3 times.
  • Select the fresh air calibration symbol from the quick menu by pressing the + key then the OK key.
  • The current gas concentration values will begin to flash.
  • When the values have stabilized, press the OK key to preform the fresh air calibration.
  • The display containing the current concentration changes on the display to “OK”.
  • Press the OK key to exit the calibration function or wait approximately 5 seconds.
A

reference

19
Q

TB 150 Dräger X

Pre-alarms (A1) are indicated by a single intermittent activation of the audible, visual and vibration alarms.

  • A1 and the measured value will alternate in the display.
  • The pre-alarm will reset itself if concentration drops below the alarm threshold.
  • Press the OK key to acknowledge the pre-alarm; only the audible and vibration alarms are switched off, the visual alarm will continue to flash.
A

reference

20
Q

TB 150 Dräger X

Main alarms (A2) are indicated by double intermittent activation of the audible, visual and vibration alarms.

  • A2 and the measured value will alternate in the display.
  • Main alarms are self-latching and cannot be acknowledged or cancelled.
  • After leaving the area and the concentration drops below the A2 alarm threshold, pressing the OK key will switch off the alarm messages.
A

reference

21
Q

TB 150 Dräger X

Field-testing has shown batteries last no more than 2 or 3 weeks.

This device requires 2 – AA alkaline batteries.

When the batteries are replaced, it will take up to ___ minutes for the device to warm-up.

A

30

22
Q

TB 150 Dräger X

A Bump Test is required anytime the meter registers readings after being used in suspected IDLH atmospheres (not after weekly)

A

reference

23
Q

TB 150 Dräger X

Weekly

Turn on device and check battery icon, replace batteries if less than ___ full.

A

3⁄4

24
Q

TB 150 Dräger X

Recommended calibration interval for all chemical sensors is ___ days.

A

180

25
Q

TB 150 Dräger X

What type of sensor does the Drager X-AM 500 use for gas detection?

Oxygen, carbon monoxide, hydrogen sulfide and hydrogen cyanide are detected using _______ sensors.

A

Catalytic Combustible Sensor

electrochemical

26
Q

TB 150 Dräger X

The X-am 5000 displays in ppm.

A

part per million

27
Q

TB 150 Dräger X (Abbreviations for gases)

It is equipped with 4 gas-specific sensors:

carbon monoxide \_\_\_\_
oxygen \_\_\_\_
hydrogen sulfide \_\_\_\_
hydrogen cyanide \_\_\_\_
A fifth catalytic sensor for explosive vapors.
A 
carbon monoxide - (CO)
oxygen (O2)
hydrogen sulfide (H2S)
hydrogen cyanide (HCN) 
A fifth catalytic sensor for explosive vapors.
28
Q

TB 150 Träger X

Oxygen, carbon monoxide, hydrogen sulfide and hydrogen cyanide are detected using ________

A

electrochemical sensors

29
Q

TB 150 Träger X

This current is computed and converted to parts per million (ppm) or parts per billion (ppb). The X-am 5000 displays in ____.

A

ppm

30
Q

TB 150 Träger X

The DrägerSensor CatEX 125 (combustible gas sensor) is a transducer for measuring partial pressure of flammable gases or vapors in the atmosphere.

The combustible gas sensor is calibrated to methane but it will detect all explosive hydrocarbon atmospheres such as pentane, butane, propane etc. and will display those readings in the display for methane.

A

reference

31
Q

TB 150 Träger X

Not intended for use in chemical atmospheres with wide flammability ranges such as Hydrogen or Acetylene. Hydrogen has a flammability range of 4%-75% and acetylene has a flammability range of 2.5%-100%. Because these chemicals have such wide flammability ranges you could potentially already be in an explosive environment the moment your meter detects the presence of a flammable atmosphere. If you suspect the presence of a gas with a very wide flammability range and your CGI is getting readings for methane you must immediately vacate that environment and immediately request LAFD Hazmat Resources.

A

Hydrogen or Acetylene exit immediately

32
Q

TB 150 Träger X

The fresh air calibration is used to improve the zero point accuracy of this meter. Calibrate the device to fresh air, free of measured gases or other interfering gases. All sensors are included in the fresh air calibration, with the O2 sensor set at 20.9% and all other sensors set to 0.

Sensors which have not warmed up or which are faulty will prevent the fresh air calibration and the unit will display the message 159 with the symbol (!) signifying a warning message.

  • After the meter has warmed up depress the + button 3 times.
  • Select the fresh air calibration symbol from the quick menu by pressing the + key then the OK key.
  • The current gas concentration values will begin to flash.
  • When the values have stabilized, press the OK key to preform the fresh air calibration.
  • The display containing the current concentration changes on the display to “OK”.
  • Press the OK key to exit the calibration function or wait approximately 5 seconds.
  • If a fault occurs during the fresh air calibration the fault message appears and - - is displayed for the respective sensors instead of the measured value.
    • Repeat the fresh air calibration.
    • If the sensor in question cannot be calibrated, contact the closest HazMat Squad for service.
A

reference

33
Q

TB 150 Träger X

Battery Alarms
The battery pre-alarm (A1) is indicated by a single intermittent activation of the audible, visual and vibration alarms.

• The 1/3 full battery symbol will flash on the right side of the display.
• Press the OK key to acknowledge the alarm; only the audible and vibration alarms are switched
off, the visual alarm will continue to flash.
• The battery will still last approximately 20 minutes.

The battery main alarm (A2) is indicated by a double intermittent activation of the audible, visual and vibration alarms.

  • The empty battery symbol will flash on the right side of the display.
  • The battery main alarm cannot be acknowledged or cancelled.
  • The device will automatically switch off after 10 seconds.
A

20 minutes

10 seconds

Training Bulletins - Newman (117 decks)

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