Dual Channel Ambient Fine Dust Sampler PEM-DCAFDS 1
Polltech takes pride in introducing this new product in its repertoire of time tested Ambient Fine Dust Samplers. This new product has been specifically designed to cater to meet the standing need for a sampler that is capable of simultaneous sampling of PM2.5 and PM10 particulates within the ambit of USEPA and CPCB design stipulations.
- Simultaneously carry out sampling of PM2.5 and PM10 particulates through two separate samplers co-located to provide convenience while avoiding interference.
- One meter distance between PM10 sampling inlet and PM2.5 sampling inlet.
- Innovative design ensures compliance with EPA reference method for determination of PM10 thus making it a standard reference method instrument for PM10 sampling too.
Available Model : PEM-ADS 2.5/10µ
This advanced sampler comprises two separate samplers or sampling channels. One of the channels is our standard PM2.5 sampler which is attuned to the determination of concentration of PM2.5 (AED ≤ 2.5 microns) concentration. The other channel is, in fact, a separate additional sampler which carries out sampling of PM10 (AED ≤ 10 microns). The additional ( PM10) sampler is provided with a digital electronic gas flow cum volume meter and an in-built flow controller using critical orifice. Its sampling inlet together with its size separator and filter holder is kept away at a distance of more than 1 meter from PM2.5 sampling inlet. This design ensures compliance with EPA reference method for determination of PM10 thus making it a standard reference method instrument for PM10 sampling too.
Salient Features :
- Two non-interfering independent channels - Each complying the corresponding US EPA reference method. PM2.5 sampling channel complies with US EPA PM2.5 reference method and PM10 sampling channel complies with US EPA PM10 reference method.
- Precision Orifice Flow Sensors in both channels
- Flow measurement from Pressure or Vacuum Source
- Electronic flow regulation to 2% accuracy in PM2.5 Channel
- Critical Orifice for flow control in PM10 Channel
- Electronic Gas Volume Meter in PM10 Channel
- Online Integration of Flow in both channels
- Digital Display of Flow and Volume
- Micro-processor based technology
- Programmable real time clock
- Versatile HMI
- Comprehensive data logging
- PC interface for in-field data transfer with Pen drive
- Sturdy enclosure housing all sensors and electronics specifically designed for outdoor operation
- Easy set-up and operation
Physical Design Highlights :
1. The system utilizes a double diaphragm sampling pump with independent flow inlet and outlet for each flow channel housed in a separate housing. Flow capacity for each channel more than 40 LPM. Pump operation controlled by PM 2.5 control module.
2. Flow control in each channel is independent.
3. The flow system of PM10 channel incorporates a critical orifice to provide a fixed flow. The flow measurement and display in this channel is provided by Electronic gas volume meter.
4. Though the sampler comprises two logically distinct and separate samplers, the components of each the samplers which if co-located do not interfere with the performance of the other samplers are housed in the single enclosure-the AFDS enclosure. This is indicated in the general arrangement diagram shown below
PM 2.5 CHANNEL
PM 2.5 Channel of PEM–DCAFDS 1 comprises an improved louvered PM10 sampling Inlet, a PM-10 size separator, a WINS impactor for PM 2.5, a filter holder for 47mm diameter filter, a flow measurement system, a proportioning valve for flow control, a sampling pump and an electronic control module (ECM). All these assemblies along with ambient pressure and temperature sensors and the sampling pump are housed in an enclosure suitable for outdoor environment. The Sampling pump can be optionally located in a separate housing.
Flow Measurement System
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 flow is obtained from a 3/5 point calibration table stored in the Electronic Control Module of the sampler.
Electronic Control Module
The ECM is a microprocessor-based electronic unit which carries out multiple functions of monitoring, control, regulation, timing, computation and Operator Machine Interface. It monitors and regulates flow to within ±2%. It also monitors the ambient temperature and controls temperature of the filter to ensure that the differential remains within ±50C. It measures and records the barometric pressure. It is user friendly, easy to configure and operate. It includes a non-volatile RAM, 4 line LCD display, a key pad and a USB communication port for PC interface. The various program parameters and measurements can be transferred to a laptop in the field. Optionally the same can be transferred onto a pen drive for further transfer to a PC. Application Software under Windows environment is also provided for enabling data transfer and computation of the final results on the PC.
PM 10 CHANNEL
PM 10 Channel of PEM–DCAFDS 1 comprises an improved louvered PM10 sampling Inlet, a PM-10 size separator, a filter holder for 47mm diameter filter, a flow measurement system, a precision critical orifice for flow control, an electronic gas flow cum volume meter (EGVM) and a sampling pump. All these assemblies except EGVM are mounted on a folding stand suitable for outdoor environment. The Sampling pump is located in a separate housing.
Flow Measurement System
The air flow is measured by measuring the differential pressure across an orifice plate installed in volume meter. The differential pressure across it is measured with Solid State pressure sensors. The flow is obtained from a multi point calibration table stored in the EGVM mounted in the sampler. The EGVM is a microprocessor-based electronic unit which carries out functions of monitoring, flow and computing volume. It is user friendly and needs no configuration includes a non-volatile RAM for volume storage, 2 line LCD display and one key for erasing stored volume.
Detailed Technical Specifications :
Particulate Sampling PM2.5
| Application | Sampling for PM2.5 and PM10 |
| 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 AC motor. (No carbon brushes ) |
| 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 ) |
Electronic Control Module
| 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) |
| Keys | 6 ( Function, Next, Previous, Start/ ↑, Stop/ ↓, Enter ) |
| Flow rate Metering and Control | |
| Flow Measurement methodology | Measurement of inlet & differential pressure across an orifice with pressure sensors |
| 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 | |
| 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 | 42 x 38 x 93 cm |
| Weight | 28 Kg with gaseous 24 Kg without gaseous |
Particulate Sampling PM 10
| Application | Sampling for PM10 |
| Sampling Inlet | Improved Louvered Inlet with PM10 size separator and sample transport tube |
| Sampling Flow Rate | 16.67 LPM |
| Sampling Pump | A dual diaphragm low noise diaphragm type non-pulsating pump with AC motor. (No carbon brushes ) in separate housing for sampling of PM2.5 and PM 10 simultaneously. |
| 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: 1.5mtrs ( from ground to top of Sampling inlet) with a Tripod stand |
| Power | 230 V AC ± 10%, 50 Hz.( 110 V, 60 Hz Optional ) |
Electronic Gas Volume Meter Specification
| Flow Range | 10.00 to 20.00 LPM |
| Flow Sensor | Precision Orifice |
| Volume Ranges | Two |
| Volume Range 1 | 0 to 9990.9 Liters |
| Volume Range 2 | 99.99 cubic meter |
| Range Selection | Auto-ranging |
| Accuracy | ± 2% of Full Scale |
| Display | 32 character Alphanumeric backlit LCD Module |
| Volume Reset | Reset key provided |
| Power Supply | 230 V AC Mains |
| Dimensions | 18 (L) X 14(W) X 7(H)cm |
| Weight | 800 Gm |
Gaseous Sampling ( Optional )
Model PEM–DCAFDS 1 can be provided with a provision for sampling of gaseous pollutants. Two types of optional add-ons are available. One of the add-ons called Standard Ambient Gaseous Sampling Equipment Model PEM-ASCIB1-X enables sampling of up to 4 gaseous pollutants. This comprises doubled walled cold box which uses ice for cooling. The other add-on is named Thermo-electric Cooled Ambient Gaseous Sampling Equipment Model PEM-TECIB 1-X employs thermo-electric cooling in lieu of ice.
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
