F&J Model DF-AB-40L Emergency Response Air Sampling System

Category: Characterization > Sampling & Analysis Equipments > Environmental Sampling Equipment
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The F&J Model DF-AB-40L Emergency Response Air Sampling System is a compact and portable air sampler designed for emergency response and environmental monitoring. It operates on multiple power sources, including on-board 4500 mAh NiMH batteries, line power, or a vehicle cigarette lighter socket, making it versatile for use in both stationary and mobile applications. The system features a dual diaphragm high-efficiency pump, and it provides an automatic flow control feature with F&J Digital Flowmeter technology, ensuring consistent flow rates even as dust loading increases. The unit is housed in a lightweight, water-tight enclosure with a durable plastic handle for easy transport. The DF-AB-40L is designed for use with 47 mm glass fiber filter paper, providing a flow range of 10 – 35 SLPM (0.3 - 1.24 SCFM) with a typical operating time of 6 hours on battery power.

Benefits

The DF-AB-40L offers exceptional flexibility for emergency response operations, with the ability to operate on both internal and external power sources. This ensures continuous sampling even when line power may not be available. Its automatic flow control function enhances reliability by maintaining a set flow rate regardless of dust accumulation, reducing the need for manual intervention. The lightweight and rugged design, combined with the convenient handle, makes it easy to transport in the field. The compact size and water-tight enclosure add to its durability and suitability for harsh environments. With a typical flow accuracy of ±4.0% of full scale, the DF-AB-40L provides precise sampling for air quality monitoring and contaminant detection. Additionally, optional data storage devices and easy-to-read LED displays offer enhanced functionality.

Limitations

The DF-AB-40L, while versatile, is limited by its operating time on battery power, which is approximately 6 hours, making it unsuitable for prolonged sampling without access to line power or vehicle charging. The unit's weight (13 lbs) may be considered heavy for long-duration manual transport in certain emergency response scenarios. While it is compact, the system's dimensions (14.5 x 8 x 10 inches) may still require careful consideration for space-limited storage or transport. The operating temperature range of 14°F to 122°F (-10°C to 50°C) may limit its use in extreme weather conditions. Additionally, while the system is user-friendly, the reliance on external data storage options may require additional setup and management, which could be a drawback for users without access to such devices.

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