As the DS500X is a combined nuisance and ambient PM10
dust sampler it has numerous applications across a wide range of industrial sectors. As an entry level particulate monitor, it is much less expensive than reference methods for PM10
sampling. As a 7-day sampler, it is ideal for determining long-term average PM10
concentrations or can be used to establish indicative 24-hour levels. Multiple DS500X gauges can be used to surround sites, allowing PM10
levels to be assessed simultaneously at different site locations. This can help to identify specific site processes that may be generating PM10
dust. Individual site contributions to local PM10
levels can also be assessed with this equipment.
When combined with the DustDisc sampler (DS500X-D), simultaneous monitoring of directional dust flux, dust deposition and PM10
concentrations can be achieved in one unit.
The DS500X is ideal for:
- Baseline monitoring for ambient PM10 levels
- Site boundary monitoring in AQMAs where long-term average concentrations are required
- Determining nuisance dust propagation
- Locating fugitive dust pathways and sources
- Assessing the effectiveness of dust suppression measures
- Compliance monitoring
As the DS500X is powered by 12v batteries, it can be located on almost any site, no matter how remote. Its relatively low cost also makes it a more favourable option to sites where security is an issue. Spare components are readily available and can usually be dispatched to site within 2-3 days.
The DS500X PM10
sampler is programmed to run for exactly 7 days, after which it automatically turns off. The sampler can also be turned off mid-run - its data logger automatically records the run start and end date, and times onto an SD card. The sampler automatically deactivates if its battery drops below a certain voltage and if the pump reaches its maximum demand due to exceptional dust concentrations etc.
Each DS500X is usually supplied with 2 PM10
samplers to allow for continuous monitoring. Used samplers must be returned to DustScan offices for data removal, servicing and filter exchange.
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 being drawn through the impactor at 5 l/min, only PM10
us accelerated through the size-selective jet fast enough to escape the system and be collected inside a filter cassette inside the sampler unit. Larger PM collects on the impactor plate and must be periodically removed.
DS500X sampler units also incorporate air temperature, pressure and humidity sensors. Sensor data output is 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.
Samplers are fitted with 25mm glass micro-fibre (GFA) filter papers. Other filter papers such as quartz filters can be supplied on request. Filter papers are pre and post weighed following MDHS 14/3 guidelines in DustScan laboratories.
concentrations are calculated using the sampler run-time (recorded on the sampler SD card) and the net PM weight.
Filter weights and sampler run data are entered into the DustScan database for tabulation and reporting. The μg/m3/24hr average PM10
concentration is calculated from the 7 day sample.
As the DS500X incorporates a gravimetric PM10
sampler, physical samples of fine particulates are collected. This allows further testing of the PM collected such as mineral or chemical, which is not normally possible when real-time, indicative samplers are used.