• Gas type independent Piezo resistive measurement: no correction factors when the process gas changes
• Absolute pressure 2000 to 1 mbar and relative pressure -1060 to +1200 mbar in one transducer
• Accuracy 0.1% of full scale from 1200 to 1 mbar (absolute)
• Chemical resistant Al2O3 ceramic sensor with FKM sealing, built for long-term stability
• Reaction time <20 ms
• DN16 ISO-KF flange with G1/4 female thread
• Lockable USB-C connection, digital zero and atmosphere adjustment, optical status LED
• Max. overload 4 bar abs., power consumption max. 0.1 W

• Rough vacuum measurement on pumps, chambers, and vacuum lines
• Processes with changing or mixed gases, where a gas independent reading avoids correction factors
• Vacuum drying, degassing, and packaging
• Relative pressure checks around atmosphere, including light overpressure up to +1200 mbar
• Laboratory and R&D setups that log pressure directly on a PC or tablet
• Portable service and maintenance with the VD800 read-out

• Type: USB vacuum transducer, Piezo
• Measurement principle: Piezo resistive, independent of gas type
• Measuring range, absolute: 2000 to 1 mbar (1500 to 1 Torr)
• Measuring range, relative: -1060 to +1200 mbar (-795 to +900 Torr), depending on ambient pressure
• Accuracy, absolute: 2000 to 1200 mbar: 1% of full scale; 1200 to 1 mbar: 0.1% of full scale (linearity, hysteresis, repeatability)
• Accuracy, relative: +1200 to 0 mbar: 1% of span; 0 to -1060 mbar: 0.15% of span
• Reaction time: <20 ms
• Max. overload: 4 bar abs.
• Wetted materials: stainless steel 1.4305, Al2O3 ceramic, FKM
• Vacuum connection: DN16 ISO-KF small flange with G1/4 female thread
• Electrical connection: USB-C, lockable
• Digital interface: USB-UART, 9.6 to 115 kBd, 8 data bits, 1 stop bit, no parity
• Voltage supply: 2.7 to 5.25 VDC
• Power consumption: max. 0.1 W
• Operating temperature: +5 to +60 °C
• Storage temperature: -40 to +75 °C
• Protection class: IP40
• Weight: approx. 100 g
• Software: VacuGraph (VGR) for Windows and Android; VacuSniff app for Android

Many vacuum processes never leave the rough vacuum range, yet they still suffer from gauges that change their reading with the gas. Switch from air to argon or a process mixture and a heat conduction gauge needs correction factors, which is where errors creep in. The Thyracont VSC43USB avoids that problem: its Piezo resistive sensor measures pressure directly, independent of gas type.

The sensor is a chemical resistant Al2O3 ceramic with FKM sealing. It reads absolute pressure from 2000 to 1 mbar, with 0.1% of full scale accuracy from 1200 to 1 mbar, and relative pressure from -1060 to +1200 mbar, because the transducer also measures ambient pressure. One device covers vacuum and light overpressure checks. The DN16 ISO-KF flange with G1/4 female thread fits standard small flange ports, and the transducer tolerates up to 4 bar absolute overload.

Over the lockable USB-C connection, the VSC43USB sends its data to a PC, tablet, or smartphone, where the VacuGraph software plots and logs the measurement, or to the Thyracont VD800 read-out for portable work. Zero and atmosphere adjustment are done digitally. When the process goes below 1 mbar, the VSR53USB adds a Pirani sensor and reaches 5e-5 mbar.

AV-TEK Consulting supplies the VSC43USB in North America and helps you match the transducer, read-out, and software to your process. Browse all USB vacuum transducers or the full Thyracont range.