Measured value display, on-site room monitoring, temperature and humidity, measured value display on machines. Measured data acquisition - interference-proof, digital, centralized. Analog output for regulation purposes. Pitot tube measurement, compensated for temperature and atmospheric pressure, ventilation measurement, with measured value smoothing, volume flow. Chemical variables : pH, redox, conductivity, oxygen (with simple on-site sensor adjustment). Mechanical variables : force, displacement (with zero-point and setpoint adjustment).