1. Product Overview
The Extech VPC300 is a versatile Video Particle Counter designed for comprehensive air quality monitoring. It measures up to six channels of particle sizes, along with air temperature and relative humidity. Equipped with a built-in camera, the device can capture videos and photos, storing them on internal memory or a microSD card. The included software facilitates report generation, integrating visual data with measurement points. This instrument is supplied with a NIST-traceable calibration certificate, universal AC adapter/charger, USB cable, PC software, tripod, filter, 7.4V NiMH battery, and a hard case.
Figure 1: Extech VPC300 Video Particle Counter main unit.
2. Setup and Initial Use
2.1 Unpacking and Inspection
Carefully unpack the Extech VPC300 and all accessories. Verify that all components listed in the packing contents are present and undamaged. If any items are missing or damaged, contact your supplier immediately.
2.2 Charging the Battery
Before initial use, fully charge the internal 7.4V NiMH battery using the provided universal AC adapter/charger. Connect the charger to the device and a power outlet. The charging indicator will show the battery status. A full charge ensures optimal performance and battery life.
2.3 Inserting a MicroSD Card (Optional)
The VPC300 has internal memory, but for extended data and video storage, a microSD card (not included) is recommended. Locate the microSD card slot, typically on the side or bottom of the device. Insert the card gently until it clicks into place. Ensure the card is formatted correctly by the device if prompted.
Figure 2: The VPC300 in operation, capturing environmental data and video footage.
3. Operating Instructions
3.1 Powering On/Off
Press and hold the power button (usually marked with a power symbol) to turn the device on or off. The 2.8" TFT color LCD display will illuminate, showing the main measurement interface.
3.2 Particle Measurement
The VPC300 measures particle sizes in six channels: 0.3µm, 0.5µm, 1.0µm, 2.5µm, 5.0µm, and 10µm. To initiate a measurement cycle:
- Ensure the device is in a stable position or held steadily.
- Press the "RUN/STOP" button to begin sampling.
- The display will show real-time particle counts for each channel, along with air temperature and relative humidity.
- Press "RUN/STOP" again to pause or stop the measurement.
Figure 3: The VPC300 simultaneously measures and displays six channels of particle sizes, air temperature, and humidity.
3.3 Capturing Videos and Photos
The built-in 320x240 pixel camera allows for visual documentation of measurement environments.
- To take a photo: Navigate to the camera mode using the device's menu buttons. Press the designated button (refer to the device's on-screen prompts) to capture a JPEG image.
- To record a video: In camera mode, select video recording. Press the designated button to start and stop recording 3GP video files.
Captured media is stored on the internal memory (74 MB) or the inserted microSD card. The device can store up to 5,000 records (date, time, humidity, temperature, sample volumes, location, measurements) and approximately 20 minutes of video.
Figure 4: The VPC300 stores records and offers video capture capabilities.
3.4 Data Transfer and Report Generation
Connect the VPC300 to a PC using the supplied USB cable. Use the included PC software to transfer recorded data, videos, and photos. The software allows for analysis of measurement data and generation of comprehensive reports, combining numerical data with visual evidence.
Video 1: Overview of the Extech VPC300 Video Particle Counter's features and applications. This video demonstrates the device's ability to detect and quantify airborne contaminants, measure particle sizes, air temperature, and relative humidity, and store data for reporting.
Video 2: Detailed demonstration of the Extech VPC300 Video Particle Counter. This video highlights its use in various environments, including cleanrooms and industrial settings, and showcases its data logging and reporting capabilities.
4. Maintenance
4.1 Cleaning the Device
To maintain the accuracy and longevity of your VPC300, regularly wipe the exterior with a clean, damp cloth. Avoid using abrasive cleaners or solvents that could damage the casing or display. Ensure the particle inlet and sensor areas are free from dust and debris.
4.2 Battery Care
The device uses a 7.4V NiMH battery. To prolong battery life, avoid fully discharging the battery frequently. Recharge the battery when the low battery indicator appears. If the device will not be used for an extended period, store it with a partial charge and recharge periodically.
4.3 Calibration
The VPC300 comes with a NIST-traceable calibration certificate. Regular recalibration is recommended to ensure continued accuracy, especially for critical applications. Refer to the calibration certificate for recommended intervals or contact Extech support for recalibration services.
5. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Battery is fully discharged or faulty. | Connect the AC adapter to charge the battery. If the issue persists, the battery may need replacement. |
| Screen freezes or device is unresponsive. | Software glitch or temporary system error. | Perform a soft reset by holding the power button until the device shuts down, then restart. If the problem continues, contact technical support. |
| Inaccurate readings or inconsistent data. | Sensor contamination or device requires recalibration. | Ensure the particle inlet and sensor areas are clean. Consider sending the device for recalibration. |
| Cannot save videos or photos. | Internal memory full or microSD card issues. | Delete old files from internal memory or insert a new/formatted microSD card. Check if the microSD card is properly inserted. |
6. Specifications
| Feature | Detail |
|---|---|
| Brand | Extech |
| Model Name | VPC300 Video Particle Counter |
| Special Feature | High Accuracy |
| Display Type | Digital (2.8" TFT color LCD) |
| Connectivity Technology | USB |
| Power Source | Battery Powered (1 Lithium Polymer battery included) |
| Particle Sizes Measured | 0.3, 0.5, 1.0, 2.5, 5.0, 10 µm |
| Flow Rate | 0.1 ft³ (2.83 L/min) controlled by internal pump |
| Counting Efficiency | 50% @ 0.3µm; 100% for particles > 0.45µm |
| Coincidence Loss | 5% @ 2,000,000 particles per ft³ |
| Air Temperature Range | -14 to 140°F (-25 to 60°C); Accuracy: ±2°F/1°C |
| Relative Humidity Range | 0 to 100% RH; Accuracy: ±3% RH (40% to 60% RH) |
| Dew Point/Wet Bulb | 32 to 122°F (0 to 50°C) |
| Camera Resolution | JPEG (640x480 pixels) |
| Video Recording Format | AVI (3GP) |
| Internal Memory | 74 MB (up to 5,000 records, approx. 20 mins video) |
| External Memory | SD Card (up to 4GB included, supports larger) |
| Included Components | VPC300 unit, NIST-traceable calibration certificate, Universal AC Adapter/Charger, USB cable, PC software, tripod, filter, 7.4V NiMH battery, hard case. |
| Product Dimensions | Approximately 9.5 x 3 x 2.2 inches |
| Item Weight | 1.6 ounces |
| Specification Met | NIST |
7. Warranty and Support
The Extech VPC300 is designed for reliability and accuracy. For warranty information, please refer to the documentation included with your product or visit the official Extech website. Extech offers various protection plans for extended coverage. For technical support, service, or recalibration inquiries, please contact Extech customer service directly. Keep your purchase receipt as proof of purchase for warranty claims.
Contact Information: Refer to the official Extech website or your product packaging for the most current contact details.