Vacuum Pressure Transmitter

Shanghai Zhaohui Pressure Apparatus Co., Ltd. is one of the leading manufacturers and suppliers of vacuum pressure transmitter in China, also supports customized service and 1 year warranty. Welcome to wholesale bulk durable vacuum pressure transmitter in stock here from our factory.

Vacuum pressure transmitter measures sub‑atmospheric pressures down to 10⁻³ Torr using an absolute reference. Captive ceramic diaphragms provide excellent linearity and resolution, while Piranha thermal gauges offer an economical solution for coarse vacuum (1‑760 Torr). Output options include 4‑20 mA, 0‑10 V, and RS‑232 or USB for data acquisition. Built‑in heating elements maintain constant sensor temperature, minimizing thermal drift. Constructed from low‑out gassing 316L stainless steel with CF or KF vacuum flanges, Vacuum pressure sensor achieves leak rates below 1×10⁻⁹ mbar·L/s. Accuracy ranges from ±0.25 % of reading (captive) to ±5 % (Pirani). Active diagnostics detect filament contamination, prompting cleaning cycles. Essential in semiconductor etching, freeze‑drying, sputter coating, and mass spectrometer, vacuum pressure transmitter requires periodic bake‑out to remove adsorbed moisture. Stable, repeatable vacuum readings are critical for consistent thin‑film deposition and pharmaceutical product quality.

Critical in semiconductor plasma etching, vacuum coating (sputtering/evaporation), freeze-drying of pharmaceuticals, and mass spectrometer. The vacuum pressure transmitter is also used in electron beam welding and vacuum furnace brazing. Provides precise sub-atmospheric readings essential for process control, product quality, and repeatability in high-tech manufacturing environments.

Captive ceramic diaphragm offers excellent linearity for high vacuum; Pirani option for coarse range. Absolute reference eliminates barometric effects. Heated sensor minimizes thermal drift. Low‑out gassing 316L stainless steel with CF/KF flanges ensures leak‑tight seals (< 1×10⁻⁹ mbar·L/s). Active diagnostics detect contamination, prompting cleaning cycles.