AirTECH max+

AirTECH max+

Product model withdrawn from sale

Device group: Ventilation controllers
Device type: 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.


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).

  • 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

Device model: AirTECH max+

Technical parameters

Gas sensor module Sensor Substance/property Standard alarm thresholds or measuring range
MS-P8R/N Infra-red Carbon dioxide (CO2)
0 ÷ 5

Contact control outputs
Voltage control outputs 12VDC
Control output "Fault"
Visual signalling, built-in
Supply voltage
detektor: 110 x 140 x 55, moduł: 190 x 200 x 110 mm


Series Technical data Device information sheet Instruction manual Declaration of conformity