F&J Model DFRV-40L-400-12Li is a lightweight, small footprint, DC voltage powered air sampling system operable from (1) on-board 12 Ah LiFePO4 battery, or (2) line power.
The DFRV-40L-400-12Li is well suited for emergency response sampling activities where users do not know whether line power will be available. Typical operating time from on-board battery is approximately 6 – 8 hours utilizing FP47M glass fiber filter paper.
The automatic flow control feature with the F&J Digital Flowmeter technology provides maximum flexibil-ity for emergency response sampling responsibilities. The set flowrate is maintained automatically in case of dust loading and does not require operator attention. The air sampler is contained in a lightweight small dimensioned enclosure which is water tight. The unit can be carried very easily by its large, rugged plastic handle.
Typical flow range is 8 – 40 SLPM (0.3 -1.41 SCFM). This flow rate varies by the filter media utilized. If pressure drop across the filter media is not significant lower flow will not be achievable without bypass valve option.
