F&J Model DF-AB-20L is a lightweight, small footprint, DC voltage powered air sampling system operable from (1) on-board 12 Ah Lead Acid battery, (2) line power, or (3) vehicle cigarette lighter socket.
The DF-AB-20L 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 batteries is
approximately 25hours utilizing 47 mm glass fiber filter paper.
The automatic flow control feature with the F&J Digital Flowmeter technology provides maximum flexibility 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.
Pump Type: Dual diaphragm high efficiency
Maximum Flowrate: 17-20 LPM typical with 47 mm glass fiber media
12VDC Battery Pack
Lead Acid; 12 VDC / ~ 12 Ah
Line Power; 110VAC or 250VAC
Vehicle Cigarette Lighter – 12VDC
Battery Charging System: Internal System which charges from line power.
Operating Time on Batteries: ~ 25 hours
Current Draw: 0.6 A maximum
Filter Holder Fitting: 3/8 FNPT quick disconnect
Handle: Durable plastic
Weight: 19 lbs. (8,6 kg)
Dimensions: 14.5”L × 8”W × 10” H (36,8 × 20,3 × 25 4 cm)
Display: Bright LED (6 character, 1,2 cm H)
Elapsed Time: DD:HH:MM up to 168 hours
Timer Accuracy: 0.1%
Flow Control: Adjustable from keypad between 5 - 20 LPM
Flow Accuracy: ± 4% of Full Scale
Volume Accuracy: ± 3%
Factory Settable Reference T and P
Classical STP 0ºC, 1 ATM
Normal T and P 20ºC, 1 ATM
Modified Normal T and P 70ºF, 1 ATM
Standard Ambient T and P 25ºC, 1 ATM