F&J Model DFRV-40L-AC is a lightweight, small footprint, brushless motor powered air sampling system operable from (1) line power, or (3) an external 12 VDC source such as a 12 VDC battery system.
The DFRV-40L-AC is well suited for indoor air sampling from line power or for remote area air sampling activities where users do have line power available.
The automatic flow control feature with the F&J Digital Flowmeter technology provides maximum flexibility for emergency response, or remote and unattended sampling responsibilities. The set flowrate is maintained automatically in case of dust loading and does not require operator attention.
Typical flow range is 10 – 40 SLPM (0.35 – 1.41 SCFM) [0.6 Sm3/hr – 2.4 Sm3/hr]. 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.
