The AX03S3 is Alvim’s ATEX-certified biofilm sensor, built for use in classified areas where there is a risk of explosion, such as Oil & Gas facilities. It provides the same real-time bacterial fouling detection as the standard range, in a housing rated for hazardous zones.

Key specifications

• Connection to process: 1″ BSPP thread
• Materials in contact with process: Titanium (working electrode), Zinc (counter electrode), POM-C, Stainless Steel (threaded connector)
• Sensitivity: 1-100% of surface covered by biofilm (first bacterial layer)
• ATEX rating: Ex II 2G Ex mb IIB T6 Gb
• Operating temperature: -10 to +50°C (biofilm growth monitoring: +2 to +40°C)
• Oxygen: greater than 1 ppm at maximum sensitivity
• Pressure: below 10 bar
• Conductivity: greater than 10 µS/cm
• Power supply: 12/24V DC ±20%, 500 mA
• Data communication: 4-20 mA and RS485/MODBUS RTU

Suited to Oil & Gas water treatment and other classified hazardous-area applications requiring biofilm monitoring.