The Purafil OnGuard 3000 (OG3) Atmospheric Corrosion Monitor is an advanced electronic instrument that provides real-time, continuous measurement of airborne molecular contaminants (AMC) and their corrosive effects on sensitive equipment and materials. Utilizing patented quartz crystal microbalance (QCM) sensor technology, this monitor detects corrosion at levels as low as one part per billion (1 ppb), making it an essential tool for environments where electronic reliability and artifact preservation are critical.
The OG3 is specifically designed to comply with ISA Standard S71.04-1985 for environmental classification, delivering both incremental and cumulative corrosion data alongside temperature and relative humidity readings.
Key Features & Benefits
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Real-Time Corrosion Monitoring – Continuously tracks airborne molecular contaminant reactivity levels to detect corrosion peaks and proactively prevent damage to electronics and sensitive materials.
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Patented QCM Sensor Technology – Uses copper- and silver-plated quartz crystal microbalance sensors to measure mass accumulation of corrosive film with ±0.5–1% accuracy.
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Extended Sensor Service Life – Sensors provide up to 4000 Angstroms of corrosion growth capacity—significantly longer than competing monitors (typically 1500 Å).
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Dual Configuration Options – Available as a stand-alone Data Logger (battery-operated, portable) or as a Transmitter (hardwired, 4-20 mA output) for integration with building management systems (BMS) or distributed control systems (DCS).
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Integrated Environmental Sensors – Built-in temperature and relative humidity monitoring with both Celsius and Fahrenheit display options.
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User-Friendly Interface – Backlit LCD display and keypad provide direct access to all functions; no external devices required for basic operation.
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Data Management – Includes PC-based software with USB/serial connectivity for data retrieval, graphing, and trend analysis.
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Industry Recognition – Received the 2007 Plant Engineering Product of the Year Silver Award for Instrumentation.
Technical Specifications
| Specification | Detail |
|---|---|
| Sensors | Copper and silver QCM (quartz crystal microbalance) |
| Service Life | 4000 Angstroms cumulative corrosion growth |
| Accuracy | ± 0.5–1% of full span |
| Output | 4-20 mA (Transmitter model); USB/serial data download (Data Logger) |
| Temperature Range | -10°C to 75°C (14°F to 167°F) |
| Humidity Range | 10% to 95% RH (non-condensing) |
| Power | 4x AA batteries + 1 lithium battery (Data Logger) – 1-year typical life; DC power (Transmitter) |
| Certifications | EU RoHS Compliant; ISO 9001:2008 Certified Facility |
Applications
The OnGuard 3000 is suitable for a wide range of industries and environments where airborne corrosion threatens valuable assets:
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Industrial Facilities – Oil/petrochemical, pulp and paper, steel/smelter, textile, power generation, mining, and pharmaceutical plants.
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Electronics Protection – Control rooms, motor control centers, data centers, and equipment rooms where electronic reliability is paramount.
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Museums & Archives – Preservation of priceless artifacts, artwork, documents, and historical materials from gaseous pollutant degradation.
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Commercial HVAC – Evaluating ventilation and recirculation air quality, and verifying chemical filter effectiveness
