- Model DF-804-30EC - Enzyme Dust Sampler with Elevated Cabinet and Casters



The DF-804-30 high volume enzyme dust air sampling systems are designed for remote unattended continuous air sampling applications. The DF-804-30 Series Air Samplers feature a brushless motor with electronic motor speed control that maintains a user selectable flow rate. The flowrate range attainable through the filter media is dependent upon the air porosity of the filter media. The DF-804-30 Series design accommodates rapid field service and component replacement.

The basic components of the system are assembled in a modular fashion so that each component can be readily and independently removed for service.

For durability and weather resistance, the system is housed in a freestanding powder coat painted aluminum enclosure. The sample air is drawn horizontally into the filter holder from all four sides and is exhausted near the bottom of the enclosure. The locking swing door of the enclosure provides convenient access for servicing the equipment inside.

The electronic flow control measurement sub-system of the DF-804-30 Series provides a reference condition flow measurement or an ambient condition flow measurement. Constant flow of air through the filter medium is maintained by comparing the operator setup value to the measured flow and adjusting motor rpm as necessary to obtain the setup flow rate. The air flow is measured by a precision-machined differential pressure sensor. The controller can be readily set to any sampling flow rate between 5 and 40 CFM (141- 1132 LPM) depending on the filter paper air resistance and dimensions. The bright LED readout displays multiple air sampling information including current flow rate, current elapsed sample time and totalized volume. The DF-804-30 model utilizes a 15 cm diameter filter. An alternate filter holder can be custom designed to accommodate any filter size and type.

  • Display in English or metric units set at factory
  • Choices of flow/volume units:
    • sccm: scc
    • SLPM: SL
    • SCMH: SCM
    • SCFM: SCF
  • State of the Art microprocessor electronics
  • Automatic flow control
  • Auto Shut-off on time or volume
  • Flowrate and volume totalizations displayed are corrected to a factory settable Reference Temperature and Pressure
  • (4 options available)
  • Elapsed time meter
  • Auto zero calibration feature of flow sensor
  • Bright LED display
  • Flowrate accuracy within ± 4.0% F.S.
  • RS-232 Communication Port w/Operator selectable download frequency for real-time data
  • 100 – 120 VAC, 50/60Hz; single phase
  • Optional Design Configurations Available

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