FlowFlow sensors for liquids FVA 645-GVxQT5Variant in stainless steel without any moving parts, with integrated temperature measuring • Measuring section in stainless steel • Application in systems with laminar flow, no pressure surges, no air pockets, no suspended solids • Without any moving parts • Integrated temperature measuring • Wide temperature range • High-speed reaction time • Using with water • For heat output measurement in heating systems and cooling plant 11/2025 • We reserve the right to make technical changes. Technical Data: Flow Measuring principle Pressure pulsation Karman vortex street Measuring range see variants Accuracy using water as medium at 0 to +100 °C ±1.5 % of final value Resolution see variants Measuring range 0 to +100 °C Accuracy ±1 K at +15 to +90 °C Reaction time (63 %) <0.25 second under flow conditions 50 % of final value Process connection 2x male thread see variants Pressure loss 0.1 bar, typical under flow conditions, Suitable conditions Media Water, Viscosity < 2 mm2/s) and conductivity >2 pS/cm Temp. of medium 0 to +100 °C Ambient temperature -25 to +60 °C Ambient humidity up to 95 % RH, non-condensing Electrical connections Output signal 2x 0.5 to 3.5 V (4.1 V) via ALMEMO® connector Connection Sensor with 2.9-meter connecting cable and ALMEMO® connector Fitting length see variants Materials (in contact with media) Corrosion-resistant coating EPDM, PPS, PPA 40-GF Pipe piece Stainless steel 1.4408; ! Note: The sensor can only be operated by plugging DIRECTLY onto an ALMEMO® device. (NOT with extension cables ZA9060VKx or ZA9090VKCx). Sensor for flow rate and temperature over a measured section, including ALMEMO® connecting cable, 2.9 meters Process connection Fitting length Order no. G 3/4“ male thread G 3/4“ male thread G 1“ male thread G 1 1/4“ male thread DAkkS accredited calibration KV91xx, flow, for probes, see chapter „Calibration certificates“. The DAkkS accredited calibration fulfills the requirements of DIN EN ISO/IEC 17025 for test equipment.