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HAZ-DUST VDM-7500
Wireless Personal Video Dust Monitoring System
- All-in-one system
- Wireless video camera, portable PC, wireless particulate monitor, radio receiver, software, and hardware all packaged in a rolling carry case with handle
- Expandable up to 4 channels to accept 4 cameras/receivers and wireless dust monitors
- Digital and wireless for unattended monitoring
- Simultaneous real-time workplace video display, dust readings, and gravimetric collection for any type of aerosol
- Built-in sample pump for concurrent air sampling
- Record-to-disc feature
- Visual proof of exposure, documentation of readings for compliance and liability
- True breathing zone measurements of inhalable, thoracic, or respirable particulate
- Interchangeable sampling heads
- Compact and rapidly deployed
Digitally record workplace dust exposure with the HAZ-DUST VDM-7500 wireless video dust monitoring system. The VDM-7500 measures levels of lung-damaging particles while simultaneously overlaying dust concentration information onto video images. Easily clip the lightweight monitor to a worker's belt and the sensor into the breathing zone. Through wireless communication, all data is displayed in real time on the PC. Record and obtain specific events that are clearly linked to worker exposure to airborne contaminants. View, record and store streaming video, data points, and graphical profiles of dust concentration on a PC with powerful DustComm Pro Software. Only the VDM-7500 provides you with integration of video and particulate dust monitoring technology for a more dynamic assessment of air contamination and worker exposure — the components necessary for dust documentation and control
HAZ-DUST VDM-7500 — How to Use It
The calibrated particulate monitor is worn attached at a worker’s
waist. The sensor is clipped in the worker’s breathing zone.
The wireless video camera is set up in the worker’s area. The
case containing the PC is set in a location where AC power is available.
Monitor worker exposure over the entire workshift or during specific
tasks for which data is required. The VDM-7500 automatically records
and synchronizes real-time exposure concentrations and video. Using
DustComm Pro Software on the system’s PC, view real-time measurements
and video during monitoring and easily produce management-ready reports
after monitoring.
The particulate monitor component of the VDM-7500 system operates on the principle of near-forward light scattering of infrared radiation. This measurement technique uses an infrared light source positioned at a 90-degree angle from a photodetector. As the airborne particles enter the infrared beam, they scatter the light. The amount of light received by the photodetector is directly proportional to the aerosol concentration. Unique signal processing internally compensates for noise and drift.
NIOSH Requirements for a Video Exposure Monitoring System
NIOSH reported that a Video Exposure Monitoring (VEM) technique can be used to "associate events and exposures and to promote more effective and focused recommendations for controlling the air contaminant exposures."1 System requirements included the following:
- A direct-reading instrument that provides a voltage output proportional to concentration
- Response time that is less than that of the events of interest
- Specificity for the contaminant of interest
- Portability
The HAZ-DUST VDM-7500 advanced technology meets these requirements and provides ease of mixing data and video and wireless communication at a much lower cost than earlier telemetry-based VEM systems.
Applications and Industries- OSHA compliance of respiratory protection
- Compliance program reviews
- Evaluating work practices/controls
- Safety audits
- NIOSH video exposure monitoring for real-time graphical overlays
- Welding fume exposures
- Air quality studies
- Hazmat air quality investigations
- Waste site remediation
- Agriculture
- Mining
- Furniture/wood/construction
- Pharmaceuticals
- Hazardous waste
- Welding/metal
- Insurance/security
| Personal Monitor | |
| Accuracy | ± 10% to filter gravimetric SAE fine test dust |
| Sensing Range | 0.01 to 200 mg/m3 |
| Particulate Size Range | 0.1 to 100 µm |
| Precision | ± 0.02 mg/m3 |
| Calibration | NIOSH 0600 gravimetric reference - NIST-traceable SAE fine test dust |
| Sample Flow Rate | 1.0 to 3.3 L/min |
| Filter Cassette | 37 mm, disposable |
| Power | Rechargeable NiMH battery |
| Operating Time | > 8 hours |
| Charging Time | 10 to 12 hours |
| Data Display | mg/m3, TWA, Max, Min, STEL, date, and time |
| Data Storage | 21,500 data points |
| Digital Output | RS-232 |
| Dimensions | Case: 5.4 x 3.3 x 2.7 in (13.7 x 8.4 x 6.8 cm) |
| Sensor: 1.75 x 1.5 in (4.4 x 3.8 cm) | |
| Weight | 1.5 lbs (0.7 kg) |
| VDM-7500 PC and Video Components | |
| Video Camera | Color, 2.4 GHz, NTSC to video board (8-hr rechargeable battery or continuous AC operation) |
| Portable PC | Pentium 4, 2.6 GHz, 14.1-in TFT display (110/220-V AC power supply) with CD-ROM, keyboard, mouse, and Windows XP (English/U.S.) |
| Total System | |
| Weight (with case) | 15 lbs (6.8 kg) |
| Dimensions | 18 x 22 x 7 in (45.7 x 55.9 x 17.8 cm) |
| RFI/EMI Shielded | CE marked |
| Description | Cat. No. |
VDM-7500 Wireless Video Dust Monitoring
System, 110-240 V, includes
wireless particulate monitor, wireless video camera, customized
portable PC with radio receiver, and software and hardware
setup packaged in a rolling carry case with handle |
|
| Sampling Heads for Personal Monitor | |
| Inhalable Sampling Head and Adapter, IOM Sampler, mounts on monitor sensor | |
| Thoracic Sampling Head, mounts on inlet or monitor sensor | |
| Respirable Sampling Head, GS-3 Cyclone, mounts on monitor sensor | |
| Adapter for GS-3 Respirable Cyclone Sampling Head, required when using GS-3 Cyclone | |
| Accessories for Personal Monitor |
|
| Calibration Standard for monitor, for verifying span and optical sensor performance | |
| Replacement Battery Pack, NiMH | |
| Charger, for VDM-7500 and HAZ-DUST IV, 110-240 V | |
| Note: | Customers who already have a Haz-Dust unit CANNOT use it in the VDM system. The Haz-Dust unit in the VDM system has a modified EPROM code that allows it to be wireless. |
References
- Analyzing Workplace Exposures Using Direct Reading Instruments and Video Exposure Monitoring Techniques, NIOSH, No. 92-104, 1992
Haz-Dust VDM-7500 Spec. Sheet (PDF)
Calibration Span Reference for HAZ-DUST IV and VDM-7500 Operating Instructions (PDF)
HAZ-DUST VDM-7500 PowerPoint Show (12.4 mb)
HAZ-DUST VDM-7500 Wireless Personal Video Dust Monitoring System Video
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