AirTECH max+

AirTECH max+ controllers are designed for measurement of carbon dioxide concentration in the range up to 5% v/v in closed spaces endangered by leakage of large amounts of CO₂ (breweries, packaging plants, bottling plants for carbonated beverages, process lines with CO₂).

Optional versions of AirTECH max+ with different measuring range (1 to 20% v/v CO₂), with measuring output 4-20mA or 2-10V and/or with digital output RS485 (MODBUS RTU protocol) are also available.

AirTECH max+ enables automatic control of ventilation through relay outputs and control of signaling of preset CO₂ concentration thresholds through external optical and/or acoustic signaling devices.

Features

AirTECH max+ detectors consist of two elements: CO₂ detector (installation in the monitored room), and power supply and control module (for installation in or outside the monitored room).

Detector

• optical (NDIR) measurement of carbon dioxide (CO₂);
• short response time (does not require flow-through systems);
• measuring output in 4-20mA standard;
• resistance to interference by steam and other gases;
• resistance to exceeding of the measuring range (even up to 100% volume of CO₂);
• sensor durability: about 5 years in non-corrosive atmosphere;
• splash-proof housing IP44;
• all detectors are calibrated in our own GAZEX Calibration Laboratory operating in accordance with PN-EN ISO/IEC 17025 (PCA accreditation No AP150).

Power supply and control module

• built-in digital control module (type MDP-1.A/T, modified) with the possibility of setting 3 alarm thresholds
• signalling of the correct operation and alarm states with LED lights;
• clear, legible LED display indicating the concentration of CO₂ (% v/v);
• ALARM1, ALARM2, ALARM3 relay alarm outputs for controlling external devices (e.g. fan);
• emergency signalling system (detector damage or connection cable damage): yellow LED lamp, relay output EMERGENCY and optical signalling on the front panel;
• 2 alarm outputs 12VDC voltage (max 200mA) to control external signaling devices;
• 230VAC power supply failure indication on the EMERGENCY relay output;
• 12VDC power supply (type PU-15-12/T) with mains overcurrent protection (B10);
• IP54 enclosure, with opening front cover, 4 rubber grommets;
• configuration and visualization of operation via dedicated software „DETnet View” (AirTECH max+/M) - available at https://www.gazex.pl/en/software/.