Ambient Fine Dust Sampler (Remodelled)
Driven by the need for wider compatibility in sync with (for pandering to) Indian industry’s bias favouring mass flow sensor for air flow measurement in air sampling.
Available Model : PEM–ADSM 2.5µ/10µ
AMBIENT FINE DUST SAMPLER Model PEM-ADS 2.5 / 10µ has been Polltech’s flagship product which has gained industry wide acceptance particularly because of the accuracy, stability and constancy of flow measurement and control afforded therein. The method employed is an approved method by various authorities including USEPA and Indian CPCB.
Polltech’s has thus far steadfastly persisted with volumetric flow measurement and control based on an orifice metering. It has been a late realization that many users in India for some reasons, which are more advertorial than soundly technical, seem to prefer a mass flow sensor based flow measurement. Therefore, in deference to their preference and in tune with our mission of providing comprehensive service to all our customers, existing and potential alike, we have decided to adopt as an alternative Mass Flow sensor based flow measurement.
Accordingly, driven by the desire to serve a wider clientele, Polltech has remodeled its Ambient Fine Dust Sampler. The remodeled sampler is christened as Model PEM–ADSM 2.5 / 10 where M symbolizes the deployment of a mass flow based sensor for measurement of flow.
Ambient Fine Dust Sampler Model PEM-ADSM-2.5/10µ is an advanced fine dust sampler, which is used to determine the concentration of PM2.5 (AED ≤ 2.5 microns) and PM10 (AED ≤ 10 microns) in atmosphere. It has been specifically designed to comply with EPA reference method for determination of PM2.5 and employs a WINS Impactor (2.5µ cut stage) in series with a PM10 size separator. When used without WINS Impactor, it becomes a standard reference method instrument for PM10 sampling.
Common Applications :
- Routine Monitoring by air monitoring networks
- Compliance Monitoring of ambient air in industrial areas
- Investigative Air Monitoring for pollution surges
- Roadside Monitoring in urban areas
- Open Spaces like forests and national parks air monitoring.
- Data reporting for monthly and yearly averages by local area air quality networks.
- Perimeter monitoring by industries like Chemical, Fertilizers, Petrochemical etc.
- Monitoring Stations by industries for ISO Compliance
- Construction and mining sites
- Waste Disposal sites.
- Third Party Assessments like Impact Analysis Evaluations, Factory Act Compliance, Environment Impact Assessments and ISO 14001,18001 Audit Compliances
- Use in educational institutes for demonstrations and practical usages.
- Various Research studies in environmental, health and science areas.
Physical Design Highlights :
PEM–ADS 2.5/10µ comprises an improved louvered PM10 sampling Inlet, a PM-10 size separator, a WINS impactor, a filter holder for 47mm dia. filter, a flow measurement system, a proportioning valve for flow control, a sampling pump, sensors (for measurement of ambient pressure and temperature) and an electronic control module (ECM). All these assemblies along are housed in an enclosure suitable for outdoor environment.
The Sampling pump can be optionally located in a separate housing.
The air flow is measured by measuring the differential pressure across an orifice plate installed in the sampling line. The pressure at the inlet of the orifice and differential pressure across it is measured with Solid State pressure sensors.
The ECM is a microprocessor-based electronic unit which carries out multiple functions of monitoring, control, regulation, timing, computation and Operator Machine Interface.
Technical Specifications :
Particulate Sampling
| Sampling Inlet | Improved Louvered Inlet with PM10 size separator and sample transport tube |
| PM 2.5 Size Separator | EPA PM2.5 WINS Impactor |
| Sampling Flow Rate | 16.67 LPM |
| Sampling Pump | A low noise diaphragm type non-pulsating pump with brushless AC motor |
| Filter Holder | Suitable for the below mentioned filter media |
| Filter Media | 47mm dia. PTFE, Nylon, Glass Fiber and Quartz Fiber filters, |
| Enclosure | Powder coated metallic housing suitable for outdoor use Over all Height: 1.75mtrs ( from ground to top of Sampling inlet) with a Tripod stand |
| Power | 230 V AC ± 10%, 50 Hz.( 110 V, 60 Hz Optional ) |
Microprocessor based Electronic Control Module Specifications
| Display | 20 Characters X 4 lines LCD Module |
| Displayed Parameters | Sample No., Flow Rate, Time of Sampling , Total Volume of Sampling, Barometric Pressure, Ambient Temperature, Filter Temperature(Other Parameters on demand) |
| Flow Measurement and Control | |
| Flow Measurement methodology | Mass Flow Sensor |
| Flow measurement updation | Every 5 seconds |
| Flow Measurement accuracy | ± 2% of reading |
| Flow Setting Range | 16.67 LPM ±20% |
| Flow Control Mode | Automatic - closed loop feedback control |
| Flow Control accuracy | Better than +/- 3% over 24 hours @ 16.67 LPM |
| Flow Computations | Flow corrected for actual operating condition, 5 minute Flow average, Coefficient of variance (CV) |
| Parameters Reported & displayed | 5 minute Flow Average, Coefficient of variance (CV) of Flow |
| Volume | |
| Totalizing | Time of occurrence and duration of Flow Out of Specs Event |
| Range & Resolution | Computation of cumulative sampled volume from the measured flow rate 0.01 to 99.99 M3 and 0.01 M3 |
| Update period | 5 Seconds |
| Barometric Pressure Measurement | |
| Measurement and Display Range | 600 to 800 mm Hg with a resolution of 1 mmHg |
| Values Recorded and Displayed | Average, Minimum and Maximum values of Ambient Pressure |
| Ambient Temperature Measurement | |
| Measurement and Display Range | 0oC to 50oC with a resolution of 0.1 oC |
| Values Recorded and Displayed | Average, Minimum and Maximum values of Ambient Temperature |
| Filter Temperature Measurement & Control | |
| Measurement and Display Range | 0oC to 50oC with a resolution of 0.1 oC |
| Values Recorded and Displayed | Differential between Filter Temperature and Ambient Temperature exceeding 2oC |
| Control Element | Filter cooling fan |
| Parameters Recorded and Displayed | Average, Minimum and Maximum values of Filter Temperature, Time of occurrence and duration of Differential Temperature exceeding 5oC |
| System Leak Test | |
| Leak Rate | < 80 cc per minute carried out for Internal and External leak with leak test adaptor |
| Parameters Reported | Observed Leak rate value for Internal and External Leak test |
| Electronic Timer and Time Totalizer | |
| Start / Stop Timing | Automatic Start / Stop of sampling with manual mode or Programmable Real Time Clock mode. |
| Time Totalization | Electronic Timer / Time Totalizer of 24 hours |
| Clock Timing Accuracy | +/- 2 minutes / month |
| Data Storage, Transfer, Reporting and Presentation | |
| Data transfer ports | 2 USB Ports ( Host & Device ) for Data transfer to PC & Pen Drive |
| PC Software | Retrieves and stores data sample wise. Enables viewing and printing of data |
| Physical Characteristics | |
| Size | 420 x 380 x 930 mm |
| Weight | Without gaseous sampling add-on: 24 Kg With gaseous sampling add-on: 28 Kg |
Accuracy Specifications Summary
| Flow Measurement Accuracy | ± 2% of reading |
| Accuracy of Flow Control | Better than +/- 3% over 24 hours @ 16.67 LPM |
| Programmable Real Time Clock / Timer Accuracy | +/- 2 minutes / month |
| Leak Rate | < 80 cc per minute |
Operating Environment
| Temperature | 5 to 50oC |
| Relative Humidity | Upto 95% non condensing |
Add-Ons
| Low Flow SPM Inlet | Model PEM-ALSPM-X | Retrofit add-on for replacing PM10 inlet to enable SPM sampling |
| Standard Ambient Gaseous Sampling Equipment * | PEM-ASCIB 1-X | Add-on for sampling of upto 4 gaseous pollutants. |
| Thermo-electric Cooled Ambient Gaseous Sampling Equipment * | PEM-TECIB 1-X | Add-on for gaseous pollutant sampling with thermo-electric cooling. |
Accessories :
Silicone oil for WINS impactor, Filters of various media, Filter Carrier with Filter Cassette , Carry bag.
Related Products :
- High Volume Air Sampler
- High Volume PM10 Sampler
- Low Flow PM10 Sampler Model PEM-LFAS10/2.5
