DL-28BV.2 Low Volume Air Sampler

NOTABLE FEATURES:

Wide temperature range electronics
Data storage up to 60 days
RS-232 communication port
Display in English or metric units
Microprocessor controlled electronics
Flowrate measurement and volume totalizations corrected to Standard Temperature and Pressure
Various selectable sampling modes
Precision machined venturi flow sensor
Auto zero calibration feature of flow sensor
Multiple on-board calculations with display
Flowrate accuracy within ± 2.5% of full scale
Programmable chain of custody identification
Optional data communications package
220-240VAC, 50/60Hz; single phase
Vacuum fluorescent display (VFD); 2×24 characters
Certified to UL, CSA and CE electrical safety standards

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GENERAL DESCRIPTION:
The Model DL-28BEV.2 Air Sampling System is a microprocessor controlled low volume air sampler consisting of an ¼ H.P. oil-less carbon vane vacuum pump with a constant air flow regulator for use where a nearly constant air flow is desirable. The regulator holds a constant pressure drop across an in-line orifice by varying the flow through a bypass valve into the pump. This system allows the pump to work at a minimum head drop at all times permitting it to run cooler, thus extending its service life. The oil-less pump requires no lubrication to maintain optimal efficiency during its service life. The pump is mounted on a base plate within a weather resistant aluminum environmental enclosure having four rubber feet. Handles are provided on the enclosure to facilitate transportation. The enclosure rating is IPX3.

The DL-28BEV.2 utilizes a bright VFD that has two (2) lines by 24 characters and utilizes wide temperature range electronic components for use in extreme ambient conditions.

This unit is designed for continuous indoor or outdoor use. This unit can be adapted for tripod mounting if desired. Please consult the product specifications for the design temperature range and the installation category.

The typical operating flow range is 0.5 to 4 CFM (14 – 115 LPM).