Rudimentary Low Cost SPM Samplers
SPM HVAS is basically used for collecting SPM which comprises particles of AED less than 100µ. This is achieved by incorporating as the sampling inlet a Gable Roof, fabricated as per US EPA / CPCB specifications.
By replacing the Gable Roof with Size Selective Inlet, the samplers can also be used for collection of particles less than 10µ and gets transformed into a PM10 High Volume Sampler.
We manufacture a range of models of High Volume Air sampler to suit various applications and budgets. The models are distinguished from one another in respect of the technological sophistication in flow measurement and control and also in blower model employed for generation of flow.
Our Low Cost samplers Models PEM–HVS 1, PEM–HVS 1NL, PEM–HVS 2 utilize the classical methods of flow measurement and indication.
- Flow is inferred from differential pressure (Δp) across an exhaust orifice
- Δp is measured by a U tube manometer mounted on the inside of the instrument Range: 0-32 cms
- Flow is inferred from flow Vs Δp graph calibrated for each orifice and manometer combination
- Explicit on-line flow indication is not provided
Models PEM–HVS 1, PEM–HVS 1NL, PEM–HVS 2 are simple no-frill samplers and lack sophistication of our mid range and advanced models as indicated below
- No internal memory for storing results
- No Data transfer facility.
- No volume totalizing capability
Physical Design Highlights:
High Volume Air Sampler consists of a high-capacity blower, a filter to collect suspended particles and a means for measuring the flow rate.
Suspended particles in the air are sampled at sampling rate between 1.1 to 1.6 m3/min through the side openings of the Gable roof and are collected on a 203 x 254 mm filter paper.
Salient Features :
- Microprocessor based Electronic Control Module
- Alphanumeric 32 character LCD Module
- Electronic Timer Cum Time Totalizer
- Settable Delay & Sampling Time
- Continuous Duty Blowers
- Orifice Plate at exhaust complies with USEPA.
- Gaseous sampling attachment as add on for all models.
- Can be morphed to a PM10 sampler by replacement gable roof with SSI.
Available Models : PEM –HVS 1, PEM–HVS 1NL, PEM–HVS 2
Model Comparisons :
The various models differ from each other in the type of blower used and type of the electronic control module employed as shown in table below
| Model → Component / Device ↓ |
PEM-HVS 1 | PEM-HVS 1NL | PEM-HVS 2 |
| Compatible Blower | BL1 | NL1 | BT1 |
| Electronic Control Module Type | ECM 2 | ||
Electronic Control Modules are similar in all respects except the following
| Model → Component / Device ↓ |
ECM 1 | ECM 2 |
| Compatible Blower | BL 1 / NL1 | BT1 |
| Flow Setting Range | Not Available | 25% to 98% of max flow |
| Flow Control Mode | Not Available | Manual – Open Loop |
| Flow Control Accuracy | Not Available | 3% of set value |
Specifications and features common to ECM1 and ECM2
| LCD Display | 32 Character Alphanumeric LCD Module with blue backlit | ||
| Number of Keys | 7 | ||
| Real Time Clock (RTC) | Nil | ||
| Settable Sampling Start Delay Time | Settable Up to 99 Hrs. 59 Min. | ||
| Settable Sampling Time | Settable Up to 99 Hrs. 59 Min. | ||
| Electronic Time Totalizer Range (Cumulative Sampling Time) | Up to 99 Hrs. 59 Min. | ||
| Automatic Sampling Start / Stop Control |
Fully programmable electronic timer to automatically shut off system after preset time interval. | ||
| Additional sampling control facility | Nil | ||
| Cyclic Mode Programming | Nil | ||
| Flow Measurement Basis | Flow is inferred from differential pressure (Δp) across an exhaust orifice | ||
| Δp measurement device | U tube manometer mounted on the inside of the instrument Range: 0-32 cms | ||
| Flow inferring technique | From flow Vs Dp graph Calibrated for each orifice and manometer combination | ||
| Displayed Flow Range | Not Available | ||
| Digital Flow Display | Not Available | ||
| Volume Totalizer Range | N/A | ||
| Temperature Measurement (for STP correction) | Not available | ||
| Internal Memory for data storage | Not available | ||
| Parameters Stored in internal memory | Not applicable | ||
| Addition information stored in internal memory | Nil | ||
| Data Transfer to Pen Drive through USB port | Not available | ||
| PC Interface software | |||
| Safety Features | |||
Accuracy Specifications
| Model | PEM–HVS 1 | PEM–HVS 1NL | PEM–HVS 2 | |
| Flow Measurement Accuracy | ± 3% | ± 3% | ||
| Flow Control Accuracy | - | - | ||
| Time Measurement | +/- 1 minute over 24 hours | |||
General Specifications - Common to PEM–HVS 1, PEM–HVS 1NL, PEM–HVS 2
| Filter Holder | SS 304 to accommodate filter paper of 25 x 20 cm |
| Filter Media | Whatman GF/A or EPM – 2000 |
| Particulate Sampling | For PM10 (i.e <10µ ± 1µ) using size selective inlet at 1.13M3/Min For SPM (i.e. <100µ) with Gable Roof (optional) |
| Construction Material & Finish | Sturdy Powder Coated Aluminum |
Operating Environment
| Power | 230 V AC ± 10%, 50 Hz.( 110 V, 60 Hz Optional ) |
| Temperature | 5 to 50oC |
| Relative Humidity | Up to 95% non condensing |
Physical Characteristics
| Model | PEM–HVS 1 | PEM–HVS 1NL | PEM–HVS 2 |
| Size ( all dimensions in mm) |
510 x420 x 1230 | 450 x 380 1100 | 450 x 380 x 850 |
| Weight | 42 Kg | 45 Kg | 22 Kg |
Quick Selection Guide
The table here below lists the decision criteria and the relative score / rating of the various models for the same
HVAS Model → |
HVS 1 | HVS 1NL | HVS 2 | HVS 4 | HVS 4NL | HVS 5 | HVS 6 | HVS 6NL | HVS 7 | HVS 8 | HVS 8NL | HVS 9 | |||
| Initial Cost | Excellent | Good | Average | ||||||||||||
| Running Cost (savings) | Fair | Fair | Good | Fair | Excellent Daily savings of 2 Filter papers ( Rs. 400) |
||||||||||
| Maintenance Requirement | Average | Excellent | Poor | Average | Excellent | Fair | Average | Excellent | Fair | Average | Excellent | ||||
| Operator Skill Requirement | Poor ( Skilled Operators required) |
Good (Automatic Data Acquisition Skilled Operators Not required) |
Excellent Automatic Data Acquisition and versatile reporting Skilled Operators Not required |
||||||||||||
| Portability | Average | Poor | Good | Average | Poor | Good | Average | Poor | Good | Average | Poor | Excellent | |||
| Flow Setting | Poor | Fair | Poor | Fair | Poor | Excellent | |||||||||
| Flow Control | Poor | ||||||||||||||
| Flow Accuracy | Fair | Average | Excellent | ||||||||||||
| Flow Constancy | Poor | Good | Excellent | ||||||||||||
| Automatic Measurement Data Recording | Poor | Good | Excellent | ||||||||||||
| Data Transfer to PC | Absent | Excellent | |||||||||||||
| Data Transfer to USB Pen Drive | |||||||||||||||
| Versatile Report Generation and Storage | |||||||||||||||
| Circular Chart Plotting of Flow Data | |||||||||||||||
Score : Absent, Poor, Fair, Average, Good, Excellent
Recommendation for Selection of High Volume Air Sampler
| S. No. | Scenario | Recommended Model |
| 1 | Severe Funds Crunch, Skilled Operator(s) available | PEM-HVS 1, PEM-HVS 1NL |
| 2 | Limited Funds availability, skilled manpower not available | PEM-HVS 5 |
| 3 | Desire for best value for money | PEM-HVS 9 |
| 4 | For other situations | Study the quick selection guide and decide. |
| 5 | Still not able to decide | Contact Polltech |
Competition shortcomings
- Flow– Well type Manometer( calibrated for flow) Vs Digital Display
- No volume totalization
- No flow recording
- Data transfer
- Data recording
- Start / stop
- Cycling
- Power Interruption recording
- STP / operating condition flow
- Flow control accuracy
- inlet
Add-ons
| Size Selective Inlet for PM10 Sampling | By replacing Gable Roof with Size Selective Inlet, this instrument can be transformed into a PM10 High Volume Sampler ie for lower size particulate concentrations , sampling of particulates < 10µ |
| Standard Ambient Gaseous Sampling Equipment | This basic add-on with icebox cooling allows the HVS to be utilized for sampling of upto four gaseous pollutants in addition to particulates which is the primary function of the equipment. |
| Thermoelectric Cooled Ambient Gaseous Sampling Equipment | This advanced add-on with thermo electric cooling allows the HVS to be utilized for sampling of upto four gaseous pollutants in addition to particulates which is the primary function of the equipment. |
Add-ons
Size Selective Inlet for PM10 Sampling
By replacing Gable Roof with Size Selective Inlet, this instrument can be transformed into a PM10 High Volume Sampler ie for lower size particulate concentrations , sampling of particulates < 10µ
Standard Ambient Gaseous Sampling Equipment
This basic add-on with icebox cooling allows the HVS to be utilized for sampling of upto four gaseous pollutants in addition to particulates which is the primary function of the equipment.
Thermoelectric Cooled Ambient Gaseous Sampling Equipment
This advanced add-on with thermo electric cooling allows the HVS to be utilized for sampling of upto four gaseous pollutants in addition to particulates which is the primary function of the equipment.
Consumables
Filters of various media and sizes, Chemical Reagent Kits for Gaseous Sampling Attachments
Related Products
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Accessories and Consumables
- Voltage Stabilizer
- Filters of various media and sizes
- Chemical Reagent Kits
Related Services
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- Flow Calibration Standard Range2 ( For Gaseous Sampling Add-on)
- Flow Calibration Standard Range5
Related Products
You may also be interested in
- PM10 High Volume Sampler
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- PUF Samplers
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