Sibata Andersen AN-200 User manual

CODE 080040-01
080040-011
080040-012
OPERATION MANUAL
Thank you for purchasing this product.
Be sure to read this operation manual before use.
Handle this product in accordance with the explanations described in this manual.
After reading this operation manual, keep it with the warranty in a safe place.
If you find any unclear points in this manual, please contact your Sibata distributor.
SIBATA SCIENTIFIC TECHNOLOGY LTD.
Low Volume Air Sampler
AN-200 Andersen Type

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Table of Contents
Before Using the Product ······················································· 3
1 Overview ········································································· 4
1-1 Principle··································································································· 4
2 Names of Parts ································································· 6
2-1 Flow Chart································································································ 6
2-2 Andersen Sampler AN-200 Set < Item code 080040-01 > ·································· 7
2-3 Andersen Sampler AN-200 Main Unit < Item code 080040-012 > ························ 7
3 Operational Procedures····················································· 8
3-1 Preparation······························································································· 8
3-2 Operation ································································································· 8
3-3 Selecting a Collection Plate ········································································· 8
4 Sample Evaluation Method················································· 9
4-1 Mass Measurement···················································································· 9
4-2 Particle Size Distribution Example and How Standard Deviation Is Expressed ······· 9
5 Maintenance and Inspections ············································10
5-1 Cautions for Use······················································································ 10
5-2 Cleaning the Andersen Sampler ································································· 10
5-3 Replacing the Pump ················································································· 10
6 Specifications ·································································12
7 Warranty·········································································13

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Before Using the Product
(Be sure to read this, and handle this product with due care.)
To ensure correct use, read this operation manual thoroughly before handling
this product. In addition, keep this manual in an easily accessible location.
△ Install this product horizontally at a stable location.
△ Be sure to connect the power cord grounding wire.
△ This product is not explosion-proofed, so do not use it in the vicinity of combustible or
flammable substances.
△ [Modifications and Repairs Are Prohibited] Never disassemble or modify this product, as
doing so will void the warranty with Sibata. Doing so may also result in unforeseen faults and
accidents.
△ If a fault occurs, request repairs immediately. Never leave the fault as is, or attempt your own
repairs, as subsequent use may result in unforeseen accidents.
△ If the product becomes dirty, wipe away the dirt with a soft cloth (soaked in detergent if there
is significant dirt).
△ If the product emits smoke, or the motor becomes very hot, or the product makes a strange
noise, stop using it immediately. Turn OFF the power switch, remove the power plug from the
power outlet, and request repairs.
△ When removing the power plug from the outlet, hold the cord by the power plug to avoid
pulling on the power cord. Be sure your hands are dry before handling the power cord.
Otherwise, there is a risk of electric shocks.
△ Do not bend, stretch, or twist the cord. Do not connect it to a different cord.
△ If you notice that the cord has become damaged, or broken, or the plug does not connect
properly, stop using it immediately, and request repairs.
Contents of Package
Check the package for the following items before using the product.
●Shelter for Andersen sampler < Item code 080040-011 >
Shelter (Suction pump, PVC hose 1m)···································1
Power cord······································································1
Operation manual (This document) ·······································1
Warranty·········································································1
●Andersen Sampler AN-200 < Item code 080040-012 >
Andersen Sampler AN-200 main unit·····································1
Glass collection plate, 82.5 mm dia. ···························10 sheets
Aluminum filter plate, t = 1.6, 82.5 mm dia. ··················· 8 sheets
Stainless steel collection plate, t = 0.1, 80 mm dia. ········10 sheets
Styrol sample holder························································ 10
Flowrate calibration table····················································1
Operation manual (This document) ·······································1
Warranty·········································································1
●Glass fiber filters, PTFE binding, TF98R, 80 mm dia., 100 sheets
< Item code 080130-098080 >
Andersen Sampler AN-200 Set < Item code 080040-01 >

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1 Overview
This Andersen Sampler equipped with multi-stage, multi-orifice nozzles is used to measure
particle size distribution of airborne aerosol in air and the environment by the impactor method.
It is configured with a classifier main unit, flowmeter, pump, and shelter.
1-1 Principle
The Andersen Sampler has a structure where usually eight corrosion-resistant aluminum alloy
stages are stacked as shown in Fig. 1 on the following page. Each stage has 800, 400, and 200
nozzles (outlets) and a glass or aluminum disc-form collection plate for filtering is placed below
them.
Since the nozzle diameter becomes smaller in lower stages, when air is introduced into the
AN-200 Andersen Sampler at a constant flowrate (1 CFM = 28.3 L/min) from the upper sampled
air installation opening of the sampler, the jet airflow velocity on each stage is higher on lower
stages. Generally, impactor's inertial parameter ψis defined by the ratio of aerosol particle
diameter, nozzle's cross-sectional area, and aerosol velocity. According to study of jet
impingement analysis performed by Ranz and Wong et al., the relation shown in the formula
below is established.
c
pc
D
dVC
μ
ρ
18
2
⋅⋅⋅
=Ψ ···························· (1)
C: Cunningham slip correction factor
(=1.00+0.16 ×10-4 /dp)
dp: Aerosol particle diameter (cm)
μ: Viscosity of air (1.84 ×10-4 g/cmsec)
ρ: Aerosol density (g/cm3)
Vc:Jet airflow velocity (cm/sec)
Dc: Nozzle diameter (cm)
ψ: Non-dimensional inertial parameter
c
c
pVC
D
d
ρ
μ
Ψ
=18 ·························· (2)
When the suction flowrate of the air sampled by the sampler is Q (cm3/min) and the number of jet
openings on the stage is N, Vcis expressed as shown below.
()
ND
Q
V
c
c2
2/60 π
= ······················· (3)

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Formula (3) is substituted into formula (2) and each stage's 50 % separated dynamic particle
diameter dp50 is obtained by the following formula.
ρ
πμ
CQ
DN
dc
p4
18 3
50
50
×Ψ
=
C
ND c
3
7
1071.7 ××= − ··············· (4)
However, Q = 28.317 cm3/min = 28.3 L/min
ρ= 1 g/cm3
The geometric particle diameter can be obtained on the basis of
ρ /
2
p
d.
In Andersen Sampler, the particle size ranges shown in Fig. 1 are obtained when the aerosol
particle diameter collected in each stage is applied using formula (4). The particle size distribution
has been confirmed to precisely match the results of experiments using standard particles with a
known diameter.
Fig. 1 Structure of AN-200 Andersen Sampler and Particle Size
B
ronc
h
us
B
ronc
h
us
Gasket
Stage
Collection plate
Airflow
11 μm min.
Backup filte
r
0.65 to 1.1 μm
1.1 to 2.1 μm
2.1 to 3.3 μm
3.3 to 4.7 μm
4.7 to 7.0 μm
7.0 to 11 μm
0.43 to 0.65 μm
0.43 μm max.
Trachea
Throat
Alveolus
Alveolus
Alveolus

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2 Names of Parts
2-1 Flow Chart
Fig. 2
Andersen Sampler main unit
Flowmeter
Flowrate adjustment valve
Suction pump

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2-2 Andersen Sampler AN-200 Set < Item code 080040-01 >
Fig. 3
2-3 Andersen Sampler AN-200 Main Unit < Item code 080040-012 >
Fig. 4
Flowrate adjustment valve
Andersen
main unit
Float type area flowmeter
Flowmete
r
Shelter
Power switch
Suction pump
Andersen Sampler
AN-200 main unit

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3 Operational Procedures
3-1 Preparation
(1) Thoroughly wash collection plates and dry them using a desiccator or something similar.
(2) Measure the weight of the collection plates described in (1) and the backup filter.
3-2 Operation
(1) Place the backup filter on the backup filter holder of the Andersen Sampler.
(2) Place a collection plate on each stage of the sampler.
(3) Pass the connector side of the power cord through the hole on the bottom of the shelter and
connect it to the power supply connector on the bottom of the power switch. Firmly fasten
the screw of the connector.
(4) Turn ON the power switch and turn the flowrate adjustment valve so that the float is
positioned at the specified value (28.3 L/min).
Note: The flowrate needs to be calibrated if a membrane filter or other filter with a high
pressure loss is used as the backup filter. Check the flowrate setting in the
provided flowrate calibration table and make an adjustment.
Continuous operation of the suction pump while the flowrate
adjustment valve is fully open burdens the suction pump and
causes a failure.
The suction pump might become hot while it is running.
Do not touch the suction pump while it is running or immediately
after it stops.
3-3 Selecting a Collection Plate
For the collection plate, glass collection plate, glass fiber filter, stainless steel collection plate,
or glass fiber filter, PTFE binding can be used.
Glass collection plate
Directly place a glass collection plate on each stage of the sampler
main unit.
Grease may be applied on the glass collection plate depending on the
properties of aerosol.
Glass fiber filter Use a filter that is the same as the backup filter. Place a glass fiber
filter on the filter plate (aluminum) and set them on each stage.
Stainless steel
collection plate
Place a stainless steel collection plate on the filter plate and set them
on each stage.
Grease may be applied in the same manner as for glass collection
plates.
Glass fiber filter,
PTFE binding
A glass fiber filter, PTFE binding is used instead of a glass fiber filter
in some cases.

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4 Sample Evaluation Method
4-1 Mass Measurement
The mass is calculated from the difference between the mass of the collection plates before
sampling and after sampling. For more accurate measurement, a precision balance (minimum
scale line of 0.01 mg or less) needs to be used. Measurement in a thermostatic chamber is
more desirable when a precision balance is used. Store collection plates and backup filters in a
desiccator with desiccant. After storing them for approximately 24 hours, measure the mass,
measure the mass of aerosol in each stage, and plot the cumulative percentages on lognormal
probability paper by the procedure described in 4-2 to use the graph as a particle size
distribution table.
4-2 Particle Size Distribution Example and How Standard Deviation
Is Expressed
Stage No. particle size (μm) Collected amount (mg) % Cumulative %
0 11 min. 0.06 0.1 100.0
1 11 max. (7.0 to 11) 0.24 0.4 99.9
2 7.0 max. (4.7 to 7.0) 0.84 1.4 99.5
3 4.7 max. (3.3 to 4.7) 2.34 3.8 98.1
4 3.3 max. (2.1 to 3.3) 5.88 9.5 94.3
5 2.1 max. (1.1 to 2.1) 20.64 33.3 84.8
6 1.1 max. (0.65 to 1.1) 16.51 26.7 51.6
7 0.65 max. (0.43 to 0.65) 10.00 16.2 24.9
Backup filter 0.43 max. 5.39 8.7 8.7
Note: A calibration table is provided with each equipment. Each flowmeter is calibrated
using a wet gas meter.

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5 Maintenance and Inspections
5-1 Cautions for Use
(1) Prevent any hose from being bent along its length or clogged.
(2) Secure sufficient ventilation during continuous operation.
(3) Dry run the unit (approx. 30 min) every two weeks when you do not plan to use it for a long
time. Be sure that the unit is not affected by humidity especially when the humidity is high in
a rainy season.
5-2 Cleaning the Andersen Sampler
When the Andersen Sampler is not in use, clean, dry, and reassemble the classifier stages.
Use an ultrasonic cleaning device for efficient cleaning.
Use a low-concentration neutral detergent solution for the cleaning solution. Rinse the stages
with water and then wipe them with a soft cloth.
5-3 Replacing the Pump
Replace the pump by the procedures below.
The suction pump might still be hot immediately after it stops. In this case, check that the pump
has returned to a normal temperature before replacing it.
(1) Remove the power cords of the unit and suction pump.
(2) Remove the hose from the intake port of the suction pump.

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(3) Remove the four knurled nuts fixing the suction pump.
(4) Remove the ground wire (green).
(5) Remove the suction pump from the unit. At this point, remove the spacers attached to the
threads as well. Be careful not to lose the spacers.
(6) Perform the reverse procedures of the procedures above to install a new pump in the unit.
Spacer

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6 Specifications
Model AN-200
Features
Particle Classification
Range 0.43 to 11 μm
Particle Size Classification 8 levels (stage）
Application
・ Study of air pollution
・ Classification of radioactive aerosol
・ Study of respiratory disorders
・ Evaluation of air filter efficiency
Pump
Suction Flowrate 28.3 L/min
Maximum Flowrate 40 L/min
Maximum Suction
Pressure 20kPa
Power supply 100 VAC 50/60Hz 2A
Main Unit
Sampling head Sampler to classify and collect airborne particles
8 stages
Flowmeter Float type area flowmeter 4 to 40 L/min
Dimensions W300 ×D130 ×H315 mm
Weight Approx. 3.2 kg
Item Code 080040-012
Product Dimensions W460 ×D600 ×H1380 mm
Product Weight Approx. 26 kg
Item Code 080040-01
Consumables
Item Code Product Name Qty
080130-098080 Glass fiber filters, PTFE binding, TF98R, 80 mm dia. 100 sheets

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7 Warranty
If a Sibata product fails within 1 year from date of purchase, it will be repaired free of charge.
To request repairs, contact your Sibata distributor.
Be sure to provide the item code, product name, model number, serial number, a description of
the problem, and other relevant information.
Consumable parts included with Sibata products are not covered by the warranty.
The warranty excludes any problems resulting from any of the following causes. Such repairs are
subject to normal service fees.
(1) Faults due to improper usage
(2) Faults or damage resulting from repairs or modifications implemented by parties other than
Sibata
(3) Faults or damage resulting from fires or natural disasters, such as earthquakes
(4) Faults or damage occurring after purchase due to relocation, movement, falling, or vibration
(5) Faults or damage resulting from the use of consumable items not specified by Sibata
(6) Sales date or seal either revised or not affixed by the sales outlet
(7) [Modifications and Repairs Are Prohibited] Never disassemble or modify this product, as doing
so will void the warranty with Sibata. Doing so may also result in unforeseen faults and
accidents.
21.03.31K (08)

Note) Shape, dimensions, specifications, and other product information are subject to change without notice in the
interest of product improvement to the extent that product functions and applications will not be impaired.