It is an active corrosion monitor designed to measure the rate of corrosion in indoor environments (e.g. control rooms, server rooms, electrical enclosures) before damage occurs.
Corrosive Air Monitoring
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Purafil
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It uses copper and silver sensors (quartz crystal microbalance sensors) to detect corrosive species in the air that deposit onto metal surfaces over time.
Purafil
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Purafil
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The device also records temperature and relative humidity to help correlate environmental conditions with corrosion.
Newgen Instruments
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Purafil
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Purafil
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It logs incremental and cumulative corrosion data, allowing trend analysis over time.
Purafil
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Purafil
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The readings are expressed in Angstroms (Å) of corrosion growth (thickness of deposited corrosion film).
Purafil
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Purafil
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Purafil
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Key Features & Specifications
Here are some of the important features & technical specs:
Feature / Spec Description / Value
Corrosive species sensors Copper & Silver plated QCM sensors
Purafil
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Purafil
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Corrosion limit / useful life of sensors Up to 4000 Angstroms (Å) of cumulative corrosion before sensor replacement.
Purafil
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Purafil
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Purafil
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Display / Interface LCD screen with menu / keypad interface
Purafil
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Purafil
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Connections / Output Ethernet / network connectivity for remote data access, and 4-20 mA output for integration with facility control systems (DCS)
Purafil
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Purafil
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Power / Backup It can be powered via network (PoE) or via batteries (for remote or inaccessible locations)
Purafil
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Purafil
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Accuracy & Stability Typically ±0.5 to 1 % of full span (for sensor / corrosion measurement)
Purafil
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Standard compliance Readings correspond to ISA Standard 71.04-2013 (“Environmental Equipment Conditions for Process Management & Control Systems”)
Purafil
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Purafil
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Maintenance / Sensor replacement After sensors accumulate ~4000 Å, they need replacement.
Purafil
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Purafil
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Typical application environments Control rooms, server rooms, motor control centers, rack rooms, electrical cabinets, etc.
