DH-30V.2 Digital High Volume Air Sampler

NOTABLE FEATURES:

Precision machined venturi flow sensor
Microprocessor controlled electronics
Flow rate measurement and volume corrected to STP
Display in English or metric units
Programmable chain of custody identification
RS-232 communication port
Flow rate accuracy with +/- 4% of full scale
Auto-zero calibration feature of flow sensor
Various sampling modes to select from
Data storage up to 10 days
Multiple on-board calculations with display
110-120VAC; 50/60Hz; single phase
Vacuum Fluorescent Display; 2×24 characters
Wide temperature range electronics

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GENERAL DESCRIPTION:
The model DH-30V.2 High Volume Enzyme Dust Air Sampling System incorporates a low maintenance single-phase 110VAC; 50/60Hz brushless regenerative blower and state-of-the-art microprocessor controlled electronics. It will perform measurements, automatically control flow rate, perform on-board calculations and automatically shut off the unit after a preset totalized sample volume has been collected or prescribed sampling time has elapsed. All flow rate and volume measurements are corrected to Standard Temperature and Pressure (STP).

The unit is mounted on a rugged portable stand and supplied with a cover plate and filter box designed for a 15cm diameter particulate filter. The DH-30V.2 system has the flexibility to be operated locally or via a PC through the RS-232 serial port. Remote communications with the system via a host PC is optional. Data may be downloaded via the RS-232 serial port to a PC or IPAQ PDA utilizing optional software including a report and graphical representation of the data on the PC. Local operation is implemented via a four-button keypad and a two line x 24-character VFD display.