Legacy Mid Range 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.

Flow is inferred from differential pressure (Δp) across an exhaust orifice
Δp is measured by a pressure sensor
Flow is computed programmatically
Digital display of inferred flow is provided
Digital display of volume is provided

PEM–HVS 4, PEM–HVS 4NL, PEM–HVS 5, PEM–HVS 6 & PEM–HVS 6NL are called legacy samplers because these models have been in existence for a long time and have been widely accepted in the industry. These samplers are called mid range because of they are equipped with more sophisticated electronics than our rudimentary low cost models but are less sophisticated in the functionality than our Advanced High Tech Models PEM–HVS 7, PEM–HVS 8, PEM–HVS 8NL, PEM–HVS 9.

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 4, PEM–HVS 4NL, PEM–HVS 5, PEM–HVS 6, PEM–HVS 6NL

Model Comparisons :

The various models differ from each other in the type of blower used and type of f the electronic control module employed as shown in table below

Model → Component / Device ↓	PEM-HVS 4	PEM-HVS 4NL	PEM-HVS 5	PEM-HVS 6	PEM-HVS 6NL
Compatible Blower	BL 1	NL1	BT 2	BL 1	NL1
Electronic Control Module Type	ECM 4		ECM 5	ECM 6

Model → Features / specs ↓	ECM 4	ECM 5	ECM 6
LCD Display	32 Character Alphanumeric LCD Module with blue backlit
Number of Keys	7		6
Real Time Clock (RTC)	Not Provided		Yes for Setting Delay Time and Sampling Time
Settable Sampling Start Delay Time	Settable Up to 99 Hrs. 59 Min.		Programmable through RTC
Settable Sampling Time	Settable Up to 99 Hrs. 59 Min.		Upto 999 hrs. 59 mts.
Electronic Time Totalizer Range (Cumulative Sampling Time)	Up to 99 Hrs. 59 Min.		Upto 999 hrs. 59 mts.
Automatic Sampling Start / Stop Control	Fully programmable electronic timer to automatically shut off system after preset time interval.
Additional sampling control facility	Nil		Timer stops on no flow or very low flow
Flow Measurement Basis	Flow is inferred from differential pressure (Δp) across an exhaust orifice
Δp measurement device	Pressure sensor
Flow inferring technique	Computed programmatically
Displayed Flow Range	0. 2 to 1.8m3/min
Flow Setting Range	Not Available	0.6 to 1.8 M³ / Min	Not Available
Digital Flow Display	Provided
Flow Control Mode	Not Available	Automatic Closed Loop Feedback	Not Available
Flow Control Accuracy	Not Applicable	2% of set value	Not Applicable
Volume Totalizer Range	9999 M³		Upto 9999 M³ STP Corrected ?
Temperature Measurement (for STP correction)	Not available		Solid State Temperature Sensor
Internal Memory for data storage	Capable of storing data pertaining to 1 sample		Capable of storing data pertaining to 10 samples
Parameters Stored in internal memory	Sampling time; volume; minimum, maximum and average flow		Sampling time; volume, minimum, maximum and average flow; the minimum & maximum ambient temperature
Addition information stored in internal memory	Nil	Average flow, Constant Flow Volume, Non Constant Flow Volume with respective time stamps	Not applicable
Data Transfer to Pen Drive through USB port	Not available
PC Interface software	Not available
Safety Features	Not Available

Accuracy Specifications

Model	PEM–HVS 4 (ECM 4)	PEM–HVS 4NL (ECM 4)	PEM–HVS 5 (ECM 5)	PEM–HVS 6 (ECM 6)	PEM–HVS 6NL (ECM 6)
Flow Measurement Accuracy	± 3%		± 2%	-
Flow Control Accuracy	-		± 2%	-
Time Measurement	+/- 1 minute over 24 hours

General Specifications - Common to all (PEM–HVS 4, PEM–HVS 4NL, PEM–HVS 5, PEM–HVS 6, PEM–HVS 6NL)

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 50^oC
Relative Humidity	Up to 95% non condensing

Physical Characteristics

Model	PEM–HVS 4	PEM–HVS 4NL	PEM–HVS 5	PEM–HVS 6	PEM–HVS 6NL
Size ( all dimensions in mm)	51 x42 x 123	450 x 380 1100	450 x 380 x 850	510 x 420 x 1230	450 x 380x1100
Weight	42 Kg	45 Kg	22 Kg	42 Kg	45 Kg

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

Legacy Mid Range SPM Samplers