DF-14M Specifications

NOTABLE FEATURES:

Display in Metric or English units to be set at factory.

Choices of flow/volume units:

FLOW	VOLUME
sccm	scc
SLPM	SL
SCMH	SCM
SCFM	SCF

State-of-the-art microprocessor electronics
Flowrate and volume totalizations corrected to STP or actual conditions selectable by the operator.
Bright LED display
Flowrate accuracy ±4% F.S.
Elapsed time meter
RS-232 Communication Port; Operator selectable download frequency for real-time data
Shut-off on time or volume
LED dimming feature
Optional flashcard datalogger for capture and storage of real-time data from RS232 port.

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Model: DF-14M 110V
Model: DF-14ME 220V

GENERAL DESCRIPTION:
The Model DF-14ME cart mounted mobile low volume air sampler with digital flowmeter has an adjustable, aluminum sampling gooseneck. The adjustable gooseneck permits sampling at heights varying from 4’ to 7’ above floor level. Model DF-14ME contains state of the art microprocessor electronics, which provides for corrected flow rate measurements, volume totalizations, and an RS232 communications port. It has a large bright LED display.

The DF-14ME Air Sampler includes an oil-less, carbon vane vacuum pump with a constant airflow regulator for use where a nearly constant airflow 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 pressure drop at all times, permitting it to run cooler, thus extending its lifetime. The oil-less pump requires no lubrication to maintain optimal efficiency during its service life. The pump is mounted on a mobile cart with two rubber wheels to permit mobile transportation of the unit.

The DF-14ME Air Sampler is designed for indoor use.

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