DustScan DS500X User manual

DustScan
Dust Consultancy and Dust Monitoring Services
Griffin House, Market Street,
Charlbury, Oxford, OX7 3PJ, UK
Tel: [phone]
Fax: [phone]
Email: [email protected] www.DustScan.co.uk
Introducing the DustScan DS500X
The DS500Xis a low-cost flexible method
for ambient, outdoor dust and air quality
monitoring. It combines the standard
DustScan directional dust gauge and a
battery-powered, filter reference PM10
sampler in one unit for simultaneous sampling
of dust flux and gravimetric particulates.
When combined with the DustDisc sampler
(DS500X-D) simultaneous monitoring of
directional dust flux, dust deposition and PM10
can be achieved in one unit.
The directional gauge is a passive system
that requires no power supply and along with
the PM10 inlet is installed semi-permanently
on site. Sampling heads are systematically
changed every 7 or 14 days. The filter
reference PM10 sampler is programmed to
run for a full week and can be powered either
by battery (12V) or the mains (240V). Sampler
units and battery cases are removed and
replaced on a weekly basis.
The DS500Xcan be located in remote sites
and is therefore ideal for baseline PM10
monitoring, compliance monitoring and
routine fenceline boundary monitoring.
The DS500Xhas a certificated PM10 size-
selective inlet jet impactor system with a PM2.5
version currently in development.
24hr average µg/m3 PM10 concentrations are
calculated from the 7 day sample. A variety of
filter papers are utilised to permit further
sample analysis as required.
The gauge utilizes a new and
improved sampler unit which
includes:
• SD card data storage
• Air temperature, humidity and
pressure sensors
• 25mm filter cassette for improved
PM detection threshold
• Fully enclosed sampler housing

DustScan
Dust Consultancy and Dust Monitoring Services
Griffin House, Market Street,
Charlbury, Oxford, OX7 3PJ, UK
Tel: [phone]
Fax: [phone]
Email: [email protected] www.DustScan.co.uk
DustScan DS500X- How does it work?
DustScan passive dust sampling
DustScan sticky pads are a ‘passive’ dust
monitoring system. Clear ‘sticky pads’ coated
with a specially formulated permanent adhesive
are used to collect dust over typically 7 day
intervals. The cylindrical directional dust
monitoring component samples fugitive dust
coming from 360° around the gauge and the
deposited (DustDisc) dust monitoring
component collects dust depositing from the air
onto a horizontal surface.
At the end of each sampling period, the sampler
units are removed and placed in a protective
carrying flask or case and replacement
samplers fitted. For the directional samplers, the
pattern of dusting on the cylinder indicates the
direction and magnitude of visible dust
propagation by direction. For the depositional
samplers, the dust coverage on the sticky pads
indicates the extent of dust deposition at that
point.
Assessment of dust coverage on the sticky pads
is achieved using a computer-based scanning
system. Directional dust measurements are
reported at 15° intervals around the sampling
head by comparing the exposed ‘sampling area’
of the sticky pad with an unexposed ‘reference
area’. The deposited dust data are reported as
the average of the sampling area in relation to
the reference area. The results are normally
reported in two dust measurements:
Absolute Area Coverage (AAC %) –
the presence of dust irrespective of colour
Effective Area Coverage (EAC %) –
the darkness or potential soiling of dust
DS500Xgravimetric PM10 sampler
DustScan DS500Xgravimetric samplers are
an ‘active’ i.e. powered fine particulate (PM)
monitoring system. Battery powered sampling
units have been specifically designed to run for
7 days (to coincide with the sticky pad system)
and to fit inside standard DustScan gauge
mounting posts.
The sampler units are powered by 12V 40ah
batteries and utilise a twin diaphragm pump,
that is set to run at and maintain a 5 l/min flow
rate. The sampler units are connected to a
certificated (and independently tested) size-
selective inlet jet impactor system, that is also
housed inside the gauge post.
Providing air is drawn through the impactor at 5
l/min, only PM10 is accelerated through the size-
selective jet fast enough to escape the system
and be collected by a filter cassette inside the
sampler unit. Larger PM collects on the impactor
plate and must be periodically removed.
Filter papers are pre and post weighed following
MDHS 14/3 guidelines in DustScan laboratories.
Gravimetric PM10 concentrations are calculated
using the sampler run-time (recorded on an SD
card) and the net PM weight.
DS500X samplers also incorporate air
temperature, pressure and humidity sensors
which are also recorded and written to the SD
card every hour.
The sampler units have their own internal power
supply so that data can still be written to the SD
card when the external power source is
interrupted or depleted.

DustScan
Dust Consultancy and Dust Monitoring Services
Griffin House, Market Street,
Charlbury, Oxford, OX7 3PJ, UK
Tel: [phone]
Fax: [phone]
Email: [email protected] www.DustScan.co.uk
DS500X- Installation Instructions Page 1
The following tools and equipment are required to
install the DS500X:
• Compass or handheld GPS
• Cordless drill & 6mm bit
• Solvent-cement
• Small hammer
• 75 x 75mm drive-in metpost spike, drive-in
tool, sledge hammer & packing material
Or
• Long cable ties or at least 100mm long
screws & appropriate tools
If you have any questions regarding the
installation and use of DustScan equipment
please contact us and we will try to help.
1) Fix the mounting post. The post should be
installed vertical and secure and where possible,
away from buildings or vegetation so that there is
free air movement to the sampler.
If the selected monitoring location has soft ground
the mounting post should be securely fixed into a
met-post or similar (available from builder’s
suppliers or DIY shops), see photo top right. You
must ensure there are no underlying services or
cables at the desired monitoring location.
If the selected monitoring location has hard
ground you should fix the post to an existing
structure such as a fence or wall using cable ties
or screws (see examples bottom right). If the post
is installed flush to a structure, make sure the top
of the post has adequate clearance to allow
subsequent components to be installed.
Either way the post should be installed so that the
inlet, monitoring head and directional sampling
cylinders can be safely installed on top to facilitate
sample collection.
The DS500X gauge consists of the following
components:
• Mounting post inc. power cable clips
• Power cable
• 2 x battery boxes inc. 12V batteries
• Battery charger
• Impactor / inlet assembly
• Monitoring head
• 6mm north alignment peg
• Rain guard
• 2 x directional sampling cylinder
• 2 x sample transport flask
• DS500X sampler unit

DustScan
Dust Consultancy and Dust Monitoring Services
Griffin House, Market Street,
Charlbury, Oxford, OX7 3PJ, UK
Tel: [phone]
Fax: [phone]
Email: [email protected] www.DustScan.co.uk
DS500X- Installation Instructions Page 2
2) Fit the inlet and monitoring head. The inlet
comprises a 65 x 65mm round-to-square socket
that houses the PM10 impactor, a plastic funnel
and an aluminium threaded top (see photo top
right). The monitoring head comprises a threaded
aluminium rod fitted to a round PVC boss (see
photo bottom right). Fit the inlet to the top of the
post (the square socket will slide onto the post)
and then screw the monitoring head onto the top
of the inlet. At this point, using a permanent
marker or correction fluid, mark both the inlet
socket and the post beneath it on the same side.
The inlet has to be removed later to install the
PM10 sampler and lining up the two marks each
time will ensure the head is correctly aligned
every time it is removed.
3) Fit the alignment peg. (See photo bottom
right) Using a compass or GPS locate north at the
monitoring location. The alignment peg must now
be fitted to the monitoring head pointing north.
Carefully drill a 6mm diameter hole 10-15mm
deep into the bottom of the round-section of the
monitoring head (see photo right). Place a small
amount of solvent-cement or superglue on one
end of the plastic dowel and insert it into the
drilled hole, at least 5mm should be exposed. It is
essential that the alignment peg points to
magnetic north. This ensures that the mounting
cylinder will be aligned to north when it is subse-
quently installed.
4) Install the mounting cylinder. The mounting
cylinders can be found inside the carrying flasks,
they are pre-loaded with sticky pad dust collection
slides. Remove a cylinder from a flask and with
the orientation notch facing down, slide it over the
monitoring head. Rotate the cylinder until the
notch locates over the north alignment peg.
Do not remove the sticky pad backing paper until
the DS500X sampler unit has been installed.

DustScan
Dust Consultancy and Dust Monitoring Services
Griffin House, Market Street,
Charlbury, Oxford, OX7 3PJ, UK
Tel: [phone]
Fax: [phone]
Email: [email protected] www.DustScan.co.uk
DS500X- Installation Instructions Page 3
6) Fit the rain guard. The rain guard comprises a
white, circular lid with a threaded boss. Screw the
rain guard onto the monitoring head, the boss
should locate inside the top of the mounting
cylinder. Do not over-tighten.
7) Connect power supply. Ensure the power
cable is clipped to the side of the mounting post.
Insert the large plug connector from the ‘slack’
end of the cable to a battery pack (green case
containing a 12V battery), see photo top right.
The cable plug can only be inserted one way, use
the screw collar to secure the cables connection
to the battery box socket.
The batteries will be supplied fully charged.
Please ensure the batteries are re-charged as
soon as possible after use with the battery
charger provided to prolong their life.
8) Insert PM10 sampler unit into post. PM10
samplers are transported in black ‘peli’ cases.
Open your case to locate the sampler, familiarise
yourself with it’s power connector.
Carefully remove the inlet and monitoring head
assembly from the top of the gauge post and
place on the ground if there is space to do so.
The power cable plug for the sampler should be
visible inside the top of the post. Connect this
cable plug to the connector socket on the bottom
of the sampler unit, it can only be inserted one
way, use the screw collar to secure the
connection (see photo middle right). The red
‘INFO’ light will flash 5 times on the top of the
sampler unit. The sampler can then be carefully
inserted into the post. Gently pull the power cable
slack through the hole in the side of the post as
you slide the sampler in (see photo bottom right).
9) Start sampling! Please see over for the
DS500X sampler unit operation instructions.

DustScan
Dust Consultancy and Dust Monitoring Services
Griffin House, Market Street,
Charlbury, Oxford, OX7 3PJ, UK
Tel: [phone]
Fax: [phone]
Email: [email protected] www.DustScan.co.uk
DS500X- Sampler Unit Operation
The new DS500X sampler unit has been
designed to be more robust and user-friendly than
its predecessor (see photo top right).
The sampler requires a 12V power supply, which
is achieved by the external battery packs
supplied. Please ensure these are fully charged
before use, using the battery charger provided.
Once the sampler has been connected to the
battery pack via the power cable (see DS500X
Installation Instructions Page 3) it can be
activated:
PLEASE NOTE - the sampler unit will not activate
if its SD card is missing (see middle photo right).
• Switch the I/0 (on/off) rocker switch on the top
of the sampler unit to ‘I’ (on). The green ’ON’
LED will illuminate (see bottom photo right)
• PLEASE NOTE - there is a 5 second delay
before the sampler pump activates. A whirring
noise will be audible when the pump is running
• The sampler unit writes data to its SD card
every hour. Whilst data is being written, the red
‘INFO’ LED will flash 5 times
• The sampler unit will automatically shut down
after exactly 7 days run time
• PLEASE NOTE - the rocker switch does not
reset. At the end of a 7 day run OR to end a
sampling run prematurely, switch the rocker
switch to ‘0’ (off). Again, there is a short time
delay until the pump de-activates.
Once the sampler has been activated the inlet
and monitoring head assembly must be replaced.
Please do not disconnect the power supply whilst
the sampler unit is running.
Please do not remove the sampler units side
inspection panels without prior agreement.