Technical Data 4/5 * At least 0.3 MPa(g) is needed for the measuring chamber supplied with the instrument. For low-pressure measurements below 0.3 MPa (g) choose the optional bypass measuring chamber A699 3501. Measurement Dew point Accuracy ± 1 °C Td (0 ... 20 °C Td) ± 2 °C Td (-70 ... 0 / +20 … +50 °C Td) ± 3 °C Td (-100 ... -70 °C Td) Selectable units %rH, °C Td, g/m³, mg/m³, g/m³ atm. , mg/m³ atm. , ppmv, g/kg, °C Td atm. Measuring range Sensor A: -100 ... +20 °C Td Sensor B: -60 ... +50 °C Td Repeatability 0.5 °C Sensor Sensor A: QCM + Polymer Sensor B: Polymer Pressure Accuracy 0.5 % FS Measuring range 0 ... 1.5 MPa (g) Sensor Piezo resistive sensor Temperature Accuracy ± 0.3 °C Measuring range -30 ... +50 °C Sensor PT 100 General data Display Integrated 3.5” color LCD touch screen Data Logger Storage Integrated mass storage, up to 30 million recorded data sets (4 channels each) Material Housing PC + ABS Metal parts Aluminium Miscellaneous Protection class IP30 Approvals CE Weight 2.8 kg Complete Set in Transport Case 0.8 kg S520 Handheld (incl. Sensor & Measuring Chamber) Operating conditions Medium Air, N₂, O₂, Argon, CO2 Note: The CO₂ measurements with the A1371 sensor are limited to -40 °C Td. Medium temperature -30 ... +50 °C Medium humidity 0 ... 90 %, no condensation Operating pressure -0.1 ... 1.6 MPa (g)* Ambient temperature 0 ... +40 °C Ambient humidity 0 ... 80 % rH Storage temperature -20 ... +50 °C Transport temperature -30 ... 70 °C Interface & Supply Supply Power supply USB charger: 5 V, 3 A Connector: USB-C Operating time 8h Data interface Connection USB 206mm 62mm 98mm S520 Portable Dew Point Meter
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