Nephelometer
| Nephelometer |
| Real-Time Handheld Dust Monitor |
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Easy-to-Use |
Two-button user-interface ensures easy dust level monitoring.
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| Accurate Dust Concentration |
Proprietary algorithm provides accurate total suspended particulate (TSP)
concentration. The sheath air feature prevents internal contamination and
improves accuracy.
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| Reliable |
Temperature compensated, durable housing and minimal moving parts ensure
reliability.
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| Highly Portable |
All-in-one handheld instrument with long-life batteries that fully charge
in less than 3 hours.
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| Environment Profiling |
Easy to use software allows programming unique environmental profiles
and recording sample data.
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| Common Applications |
- Industrial/Occupational Hygiene Area Surveys
- Particulate Matter Studies
- Immediate spot measurement
- Aerosol Research Studies
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The Sensidyne Nephelometer is an advanced real-time
dust monitor accurately measuring dust concentrations using proven light
scatter technology. This portable instrument accurately measures and
records dust from 1-10,000 μg/m3
with resolution to 1 μg/m3. Sample
modes are selectable between 60 second
sample, 15 minute STEL, or continuous sampling.
The Nephelometer has an internal pump drawing samples into the iso-kinetic
sampling inlet where they meet sheath air that guides samples past the
particle sensor. The sensor is a photo detector that measures laser light
scattered by particulates in the sample stream.
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The instrument multiplies each measurement by
a K-factor and displays the real-time reading on the display of the instrument.
After each sample, the K-factor and Environmental Factor Name and STEL,
maximum, minimum, and average readings record to the internal data log.
When connected to a computer the instrument uploads up to 4,000 data-log
records in spreadsheet format.
In addition to high sensitivity and ease-of-use the Sensidyne Nephelometer
offers a low cost of ownership, automatic power save, long-life, data-logging,
facility monitoring features, and user-replaceable filters.
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| Nephelometer |
| Real-Time Handheld Dust Monitor |
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| Ease-of-Use |
| The
Sensidyne
Nephelometer
is
easier to
use |
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| The
Sensidyne
Nephelometer
is
very
easy
to
use!
It
is
highly
portable
and
allows
for
single-hand
operation. The
two
button
operation
allows
the
user
to
select
the
sample
mode,
select
the
environmental
factor,
and begin
the
sample. |
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| Charging
Jack |
Plug
Lithium
Ion
charger
module
into
the
jack
to
charge
the
batteries. |
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| Protective
Inlet
Cover |
Protects the unit from dust entering inlet during
storage. |
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| Iso-kinetic
Inlet |
Reduces count errors due to mismatched
sample
flow
velocity. |
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| Flow Adjust |
Adjusts the flow rate of the unit. Factory set. |
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| USB Port |
Connects
instrument
to
a
PC
for
downloading
data
and
unit
set-up. |
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| On/Off Sample |
Button to turn unit ON and OFF and start new sample. |
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| Select / Mode |
Button
to
select
Environment
and
operation
mode. |
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| Zero Cap |
Rubber cap used for zeroing instrument |
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| SENSIDYNE
NEPHELOMETER
COMPETITIVE
ADVANTAGES |
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- Sheath Air
- Instant Readings
- Highly Sensitive
- Data Logging
- Extremely Portable
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- Low Cost-of -Ownership
- Long-Life Internal Pump
- Site Monitoring PC Program
- Selectable Sample Modes
- Automatic Power Save
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| Monitoring
for
Dust
and
Airborne Particulate |
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| WHAT
IS
A
NEPHELOMETER? |
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| The
Nephelometer
is
an
analytical
instrument
used
to
measure
the
light-scattering coefficient
of
atmospheric
and
indoor
aerosols.
Depending
on
design,
a
Nephelometer inherently
has
different
levels
of
sensitivity.
The
main
uses
of
Nephelometers
relate
to air
quality
measurement
for
pollution
monitoring,
climate
monitoring,
and
visibility. |
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| Types of Dust |
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- The layer of dust on furniture and floors
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- Particulate's in the air floating around before it turns
into heavy dust |
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- Suspended
Atmospheric
Dust
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- Minute
particles
slowly
settling
or
suspended
by
slight
currents
and existing
in
varying
amounts
in
all
air. |
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| AIRBORNE
PARTICULATE |
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Airborne
particles
are
commonly either
biological
contaminants, particulate
contaminants, gaseous
contaminants,
or
dust.
This
chart
shows
the
types
and sizes
of
various
particulate contaminants. This
information
helpful
toward
understanding the
character
of
particulate pollution
inside
a
building
or
in the
ambient
air.
It
is
also useful
for
understanding
the cleanliness
level
in
a
controlled environment
Biological
contaminants
include mold,
fungus,
bacteria,
viruses, animal
dander,
dust
mites, pollen,
human
skin
cells, cockroach
parts,
or
anything alive
or
living
at
one
time.
These
are
the
biggest
enemy
of Indoor
Air
Quality
specialist because
they
are
contaminants that
cause
health
problems.
Levels
of
biological contamination
depend
on humidity
and
temperature
that supports
the
livelihood
of
micro-
organisms.
The
presence
of
pets,
plants,
rodents,
and
insects
will
raise
the
level
of
biological contamination.
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| THE
HUMAN
AIRWAY/RESPRIATORY
SYSTEM |
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Inhalable
particulate
–
Particles
with
an aerodynamic
size
cut point
of
100
microns that
deposit
in
the nose,
mouth,
pharynx, and
larynx.
Thoracic
particulate
– Particles
with
an aerodynamic
size
cut point
of
10
microns and
deposit
in
the trachea
and
bronchus.
Respirable
particulate
–
Particles
with
an aerodynamic
size
cut point
of
4
microns
and deposit
in
the
lower portion
of
the
lung
sacks
or
bronchioles. |
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| Sheath
Air |
| What
is
sheath
air
and
how
does
it work? |
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What
is
Sheath
Air
and
how does
it
work?
Sheath
air
is
clean
filtered
air that
surrounds
the
aerosol stream
to
prevent
particulates from
circulating
or
depositing within
the
optic
chamber. Sheath
air
prevents contamination
caused
by build-up
and deposits,
improves
response time
by
containing
the
sample, and
improves
maintenance
by keeping
the
optic
chamber clean.
From
where
does
Sheath Air
come?
The
Nephelometer
creates
the sheath
air
by
passing
air through
a
zero
filter
before beginning
the
sample. |
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