Low Flow Air Sampler LFAS 1

Sampling for toxic gases and VOCs at low flow rates

Low Flow Air Sampler is an easy-to-carry around sampler for determining the concentration of toxins in ambient and workplace environments.

Available Model : PEM – LFAS1

We offer Low Flow Air Samplers that are compact and light weight, and are designed for determination of volatile organic compounds (VOCs) and toxic pollutants.

Low Flow Air Sampler LFAS 1

The samplers employ Adsorption tube sampling as the methodology for sampling the air for VOC and other toxic pollutants.

A suction pump enables the sampled air to be drawn through an adsorption tube which is packed with adsorbent specific to the pollutant of interest. In the process, the pollutant gets entrapped in the adsorbent. The collected sample is subsequently analyzed in the laboratory to determine the concentration of specific pollutants.

Applications :

  • Compliance Monitoring in industrial areas
  • Investigative Air Monitoring for pollution surges
  • Workplace monitoring for exposure compliance
  • VOC Monitoring
  • Fugitive gas monitoring
  • Sick Building Investigations
  • Factory Act Compliance
  • Data Collection and Reporting
  • Hospitals
  • Elderly care facilities
  • Laboratories

Physical Design Highlights :

A sampling train, a suction pump, a flow measuring device, a flow controller and an electronic assembly comprise a Low Flow Air Sampler. The adsorbent tube(s) are placed in the sampling train.

The special sampling pump provides very low flow. A specially designed glass tube rotameter to provide high accuracy at low range is employed for measuring flow.

PEM–LFAS2 employs a single adsorbent tube and correspondingly a single flow measuring device and a single flow control device. PEM–LFAS3 employs two adsorption tubes with two independent flow measuring devices and two independent flow control devices.

Salient Features :

  • Three user selectable flow meter range : 10-100 cc/mt, 20-200 cc/ minute or 50-500cc/mt
  • Used in Shop Floor or Ambient Air Quality Monitoring.
  • Microprocessor Based Electronic Timer Cum Time Totalizer
  • Compact and Light Weight

Model :

Feature PEM – LFAS1
Number of adsorbing tubes 1
Number of simultaneous samples possible 1
Size 120 x 140 x 170 mm
Wight 0.65 kg

General Specifications :

Housing/Holder Holder for 6mm dia. adsorbing tube
Suction Pump Diaphragm Type
Vacuum >1500 mm WC
Free Flow > 2 LPM
Flow Meter Range Options 10-100 cc/ minute or 20-200 cc/ minute or 50-500 cc/ minute
Flow Control Fine Needle valve(s)
Time Display Not Available
Operating keys Not Available
Electronics Not Applicable
Delay Time Not Applicable
Sample Time Not Applicable
Cabinet Finish Poly carbonate with laminated front

Accuracy Specifications :

Flow Measurement Accuracy ± 3% of full scale
Time Measurement ± 1 minute over 8 hours

Operating Environment :

Power 6 VDC from battery
Battery Charger input power 100 V to 230 V AC ± 10%, 50/60 Hz
Temperature 5 to 50o C
Relative Humidity Upto 95% non condensing

Comparison with similar products

Low Flow Air Sampler
Personal Air Sampler
Sampling Medium
Activated Charcoal, Tenax GC and other various adsorption tubes
Sampling Tube Quantity
Housing / Holder
Suitable for 6 mm dia adsorbing tube
Simultaneous Sampling
Suction Pump
Diaphragm Type
> 1500 mm WC
> 1500 mm WC
Free Flow
> 2 LPM
> 2 LPM
Flow Meter Range
10-100 cc / minute or 20-200 cc / minute or 50-500 cc / minute (user specified)
50-500 cc/ minute
Flow Control Fine Needle Valve
Fine Needle Valve 2 Nos.
Needle valve
Time Display
3 digit 7 segment LCD Display
Operating keys
4 nos.-Delay Time , Sample Time, Start, Stop
Not provided
Microprocessor based
Not applicable
Delay Time
Settable from 0 to 99 minutes for automatic start after the delay time
Not applicable
Sample Time
Settable from 0 to 999 minutes for automatic stop after the set time
Not applicable
Al with laminated front
Poly carbonate with laminated front

Accessories and Consumables :

  • Activated Charcoal tubes
  • Tedlar bags
  • Carry Bags

Related Services :

  • Flow Calibration

Related Products :

You may also be interested in :

  • Portable Gas Sampler Model PEM-PGS1, PEM-PGS2
  • Thermo-electric Cooled Gas Sampler Model PEM-TECGS1
  • Handy Air Sampler Model PEM-HAS 1
  • Personal Air Sampler Model PEM–PAS 1, PAS 1A, PAS1L