Model DF-75L-400-Li

Digital Flow Meter for Emergency Response

Model DF-40L-400-Li Emergency Response Digital Flowmeter, Air Sampler

The Model DF-75L-400-Li is a lightweight, small footprint, DC voltage powered air sampling sys-tem operable from (1) on-board 20 Ah Li Ion battery, (2) line power, or (3) auxiliary DC connector (12 – 15 VDC) The DF-75L-400-Li 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 approxi-mately 8 - 10 hours when utilizing FP47M glass fiber filter paper. This air sampler can be utilized with the optional rain shield filter holder system for use when rain or snow conditions exist.

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 automati-cally 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 15 - 75 SLPM (0.5 – 2.6 SCFM).

DF-75L-400-Li open box DF-75L-400-Li meter face DF-75L-400-Li extended

Pump Type: Dual diaphragm high efficiency
Maximum Flowrate: 75 LPM with FP-47M glass fiber media
Power Source:
Internal – Li Ion; 14.8 VDC/20 Ah Battery Pack
External – Line Power; 100VAC to 240VAC
– Auxiliary 12 to 15 VDC input
Battery Charging System: Internal system which charges from line power.
Operating Time on Batteries: ~ 8-10 hours
Current Draw: 3 A maximum
Filter Holder Fitting: 3/8 FNPT quick disconnect
Handle: Durable plastic
Weight: 21 lbs. (9 kg)
Dimensions: 16.8 in L × 9.0 in W × 14.0 in H (42.7 × 22.9 × 35.6 cm)
Average Db: 67.5
Operating Temperature Range: 0ºF to 122ºF (-18ºC to 50ºC)
Display: Bright LED (6 character, 1,2 cm H)
Elapsed Time: DD:HH:MM up to 168 hours
Flow Control: Adjustable from keypad between 15-75 LPM
Flow Accuracy: ±4.0% of Full Scale
Factory Settable Reference T and P


Filter Holder Model Charcoal Cartridge Dimensions Particulate Paper Diameter
FJ-05P F&J Model B 2 in or 50 mm
FJ-21P F&J Model C 2 in or 50 mm
FJ-35P F&J Model B 47 mm
FJ-46P F&J Model C 47 mm
FJ-51P F&J Model M 2 in or 50 mm
FJ-53P F&J Model M 47 mm