MeteorologyDigital sensor for temperature, humidity, atmospheric pressure FHAD 46-C4AG in protective all-weather housing with ALMEMO® D6 plug On request in protective all-weather housing FPA930AG • All relevant ambient parameters are measured with one sensor. • Suitable for mounting on a wall or a mast • Sensor cable up to 100 meters long, clamped in terminal box • All sensors in 1 multi-sensor module: capacitive digital sensor for humidity and temperature, digital atmospheric pressure sensor. Additional EEPROM data storage medium in the sensor module • The sensor module is thoroughly adjusted. All sensor characteristic and adjustment data are stored in the data storage medium of the sensor module itself. In the process of readjusting the individual sensors, the adjustment values are directly saved in the data storage medium of the sensor module. • Replacement sensor modules are inexpensive: The sensor module is pluggable and can be simply exchanged on-site. Full accuracy without any adjustment, especially with calibrated sensors. The ALMEMO® connecting cable and the ALMEMO® measuring instrument have no influence on the calibration. • The atmospheric pressure is measured directly at the measuring point in the sensor tip. Hence, the atmospheric pressure dependent humidity variables are automatically pressure compensated. • Humidity calculation on the basis of formulae as per Dr. Sonntag and the enhancement factor as per W. Bogel (correction factor fw(t,p) for real mixed gas systems). This substantially widens the measuring range and improves the accuracy of humidity variable calculations. • Humidity variables: Absolute humidity in g/m3. • The humidity variables are calculated from the three primary measuring channels (real measurable variables): temperature, humidity and atmospheric pressure. • Four measuring channels are rogrammed (ex factory): temperature (°C, T,t), relative humidity (%H, RH, Uw), dew point (°C, DT, td), atmospheric pressure (mbar, AP, p). Alternatively further humidity variables are selectable. Mixture (g/kg, MH, r), absolute humidity (g/m3, AH, dv), vapor pressure (mbar, VP, e), enthalpy (kJ/kg, En, h). The configuration is performed on the ALMEMO® V7 measuring instrument or directly on the PC using the USB adapter cable ZA1919AKUV (Chapter “Network technology”). 11/2025 • We reserve the right to make technical changes. Technical Data Humidity Measuring range Sensor Accuracy (incl. hysteresis) Atmospheric pressure Digital temperature / humidity sensor (including A/D converter) 0 to 98 % RH CMOSens® technology ±3 % RH in range 10 to 90 % RH ±5 % RH in range 5 to to 98 % RH at nominal temperature typical ±1 % RH Sensor operating pressure CMOSens® technology typical ±0.2 K at 5 to 60 °C maximum ±0.4 K at 5 to 60 °C maximum ±0.7 K at -20 to +80 °C typical ±0.1 K Digital atm. pressure sensor (integrated in the multi-sensor module) Measuring range 700 to 1100 mbar Accuracy ±2.5 mbar (at 23 °C ±5 K) ALMEMO® connecting cable PVC, for available lengths see variants with ALMEMO® D6 plug Refresh time 1 second for all four channels Mechanical design Sensor tube Plastic, diameter 12 mm All-weather protection 0 105 mm, height approx. 110 mm Terminal box 51 x 53 x 36 mm Screw-fit cable gland Splash-protected

Accessories ALMEMO transmitter 2490-1R02U with double analog output 10 V or 20 mA ® (For other data, options, accessories, see chapter 01 Measuring instruments) Standard delivery Digital sensor for temperature, humidity, atmospheric pressure in protective all-weather housing with connecting cable and ALMEMO® D6 plug, manufacturer’s test certificate, 2 fixtures for mounting on a mast Connecting cable Length = 5 meters FHAD46C4AGL05 Length = 10 meters FHAD46C4AGL10 Length = 20 meters FHAD46C4AGL20 Length = 40 meters FHAD46C4AGL40 Length = 100 meters FHAD46C4AGL100 Replacement multi-sensor module,...