HAZ-DUST VDM-7500

Wireless Personal Video Dust Monitoring System

HAZ-DUST VDM-7500 Cat. No. 770-7500 Wireless Personal Video Dust Monitoring System

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 PowerPoint Show zip format (9.3 mb)

HAZ-DUST VDM-7500 PowerPoint show html version (view in browser)

Immediate and simultaneous real-time workplace video and display of dust measurement
All-in-one video dust monitoring system

Wireless video camera, customized portable PC with radio receiver, wireless particulate monitor, software, and hardware all packaged in a rolling carry case with handle

Digital and wireless for unattended monitoring
Concurrent collection of filter samples for gravimetric and chemical analysis

Built-in pump provides an adjustable 1.2 to 4 L/min flow
Uses in-line 37-mm cassette

> 8 hours operation on one battery charge
True breathing zone measurements of inhalable, thoracic, or respirable particles

Easily interchange sampling heads

Record-to-disk feature
- Visual proof of exposure, concrete documentation of data

Introducing the HAZ-DUST VDM-7500, a portable, turnkey personal dust monitoring system that automatically overlays exposure video onto real-time dust concentration data. Only the VDM-7500 combines this feature with a wireless system that is portable, affordable, and easy to use. With the VDM-7500, easily characterize worker exposure for effective implementation of controls or combine worker activity data with real-time exposure data for a comprehensive review and analysis by health and safety professionals.

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.

Principle of Operation
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.

VDM-7500 Applications

Identifying tasks/elements that produce high exposure levels or contribute most to worker exposures
Performing time/motion studies that correlate worker activity with resulting exposure
Identifying sources of worker exposure and contaminant generation rate
Determining effectiveness of ventilation systems
Comparing worker-to-worker activity and exposure
Performing qualitative and quantitative studies with a duration too short for integrated air sampling methods
Demonstrating controls effectiveness
Monitoring exposure
Selecting respiratory protection
Training workers
Performing safety audits
Reviewing compliance programs
Supplying documentation for worker compensation issues
Performing insurance investigations

Performance Profile

Personal Monitor
Accuracy:	± 10% to filter gravimetric SAE fine test dust
Sensing Range:	.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:	1.2 to 4 L/min
Power:	Rechargeable NiMH battery
Operating Time:	> 8 hours
Charging Time:	10 to 12 hours
Data Storage:	21,500 data points
Digital Output:	RS-232 for data download, RS-232 wireless for real-time data transmission
Dimensions:	Case: 5.4 x 3.3 x 2.75 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 battery or AC operation)
Portable PC:	Pentium 4, 2.6 GHz, 14.1-in TFT display (110/240 AC operation)
Total System
Weight (with case):	15 lbs (6.8 kg)
Approvals:	CE marked

Description	Cat. No.
VDM-7500 Wireless Video Dust Monitoring System 110 V-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 Use the VDM-7500 only with the HAZ-DUST monitor included with the system. Requires calibration with equipment sold separately	770-7500
Sampling Heads for Personal Monitor	Cat. No.
Inhalable Sampling Head and Adapter, IOM Sampler, mounts on monitor sensor	770-115A
Thoracic Sampling Head, mounts on inlet or monitor sensor	770-4107
Respirable Sampling Head, GS-3 Cyclone, mounts on monitor sensor	225-103
Adapter for GS-3 Cyclone Respirable Sampling Head, required when using GS-3 Cyclone	770-313
Accessories for Personal Monitor	Cat. No.
Calibration Standard	770-140
Replacement Battery Pack for Personal Monitor, NiMH	770-4105
Chargers for Personal Monitor 110 V	770-4104
Chargers for Personal Monitor 240 V	770-4104B

References

Analyzing Workplace Exposures Using Direct Reading Instruments and Video Exposure Monitoring Techniques, NIOSH, No. 92-104, 1992.

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.