Transcript section 11 level b suit out section 12 air monitoring

SECTION 11
LEVEL B SUIT OUT
SECTION 12
AIR MONITORING
LUMIDOR MICROMAX
4 GAS AIR MONITORING FOR
THE TECHNICALLY
CHALLENGED
Why did we choose
this monitor?
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It is reliable
It is durable
It is easy to use
Parts are easily
replaced and it is
easy to maintain
• It is easy to
calibrate
WARNING !
• To ensure proper functioning and use of
this product do not use the instrument until
you read and completely understand the
operating manual.
• No member of the hazmat team knows any
more about the monitor than the book can
tell you. We learned from the book.
KEY FEATURES
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AUTOMATIC DISPLAY ILLUMINATION
AUTOMATIC ZEROING
BATTERY VOLTAGE DISPLAY
PEAKS FEATURE
LOW BATTERY ALARM
AUDIBLE AND VISIBLE ALARMS
CHARGING THE
BATTERY PACK
• To charge the unit use only the charger
supplied with the monitor designated
“MAX-1”…damage may result
• The charger looks very similar to many
other transformer/charger units used by
the AFD (not to mention our personal
stuff)
• leave the monitor on charge all of the
time…it has a small current draw
Specifications
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operating temp range -4 to 122 deg. F
humidity range - 0 to 98% (non condensing)
battery life 8 hours on full charge
Accuracy
– oxygen 0.5%
– 2% LEL
– 2ppm or 10% of applied gas
concentration for H2S or CO
OPERATING
INSTRUCTIONS
• ALWAYS turn the unit on in a clean
atmosphere. (and make sure that the
filter is connected)
• The self test and auto zero functions will
take 45 seconds.
• alarm points will be displayed
• data may be available from last use
alarms test
• test the low flow alarm by blocking the
intake port.
• if the internal tubing has become
disconnected, the low flow alarm will not
sound
• “bump test” at regular intervals to verify
accuracy (instructions on page 6)
• Always let the monitor “clear out” after
calibration, bump test, or exposure to a
hazardous atmosphere.
mode functions• press the mode button and then the
on/off button to select
• battery voltage – full charge is 2.5 to 2.7 volts
– battery warning below 2.1 volts
– low battery fail occurs at 1.9 volts
• peaks - stores the highest concentration
for each sensor. (Retained after the
machine is turned off)
modes (continued)
• The STEL and TWA modes reveal
stored “time weighted average”
exposures used to protect against
occupational exposures. (CO during
overhaul at a structure fire.)
• Alarms sound if STEL or TWAs are
exceeded
• After 15 seconds monitor defaults to
survey mode
REMOTE SAMPLING
• 10 foot hose used for “pre-testing”
confined spaces or trenches
• Two minute response time @ 10 feet
• up to 100 feet of hose can be used
• add 1 second per foot to the two minute
response time
When to Calibrate (page 11)
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When sensors are replaced
When there is a sensor fault
Bump test readings off + 15%
or every 90 days
• follow the directions on page 11-12
Calibration steps
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Fully charged battery in clean air
Remove calibration screw
start monitor (let run for a few minutes)
tap internal switch once
after 30 seconds tap switch again and
apply gas
• flow gas for 2 minutes and tap switch
again
Calibration steps (cont)
• monitor should read cal gas valuesremember the cal gas has a small error
factor so it might not be perfect
• remove cal gas but DO NOT TURN
MONITOR OFF until readings have
returned to zero.
Trouble?
• auto zero error
• stored or turned on in contaminated
atmosphere or cal gas prematurely
applied.
• simple steps with internal switch may
solve problem
WARNING!
• If the instrument is used in very high
concentrations above 100 % LEL, or in
a very low oxygen environment, the
displayed LEL reading will be lower
than the actual value.
for natural gas leaks
• Avoid exposing it to high concentrations
(don’t peak the sensors)
• Use it to establish perimeters on outdoor
leaks and to check nearby occupancies
• Use it to check levels in occupancies
where leaks are suspected.
• Mercaptan odor but no LEL reading (low
odor threshold by design)
• Mercaptan sometimes reads on the H2S
• Let it go back to zero before turning off
Carbon monoxide calls
• Temperature changes influence
readings (cold outside, warm inside)
• do not test monitor by holding it in the
tailpipe or other known high monoxide
atmospheres