OnGuard Smart with Modbus
The 5th generation OnGuard Smart-MB adds Modbus connectivity to Purafil’s proven corrosion and environmental monitoring platform for data centers, industrial facilities, water treatment plants, museums, control rooms, and other critical environments. The system monitors corrosion severity, temperature, humidity, and room pressure, with corrosion classifications based on the ISA 71.04 standard. Fast wall installation and flexible connectivity via web interface, LAN, analog 4–20 mA, and Modbus simplify integration.
- Indicates the level of corrosion before damage occurs, preventing costly repairs/downtime
- Ethernet enabled
- Easy remote access to data and graphs
- RoHS (Lead free directive. Or Restriction of Hazardous Substances Directive) compliant
- Measures corrosion, room air pressure, temperature, & relative humidity on a continuous basis
- Provides incremental and cumulative corrosion data
- Easy to install
- Long service life
- Readings correspond to ISA Standard 71.04-2013
Ships within 4 weeks (Orders of 50 or more will ship within 8 weeks)
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CORROSION CONTROL

ISA ENVIRONMENTAL CLASSES:
AIRBORNE CONTAMINANTS
This standard requires that rooms containing backplane wired equipment, instrumentation, process control systems or computers, must have a G1 environmental classification, defined in terms of corrosion thickness as 0-299 Angstroms (Å) per 30 days on copper and 0-199 Å per 30 days on silver coupons. Purafil provides a report that directly correlates to the G1, G2, G3, and GX ratings.
