PREVAC | Technology for science and industry 11.11.2026 00:44
Quartz balance QO 40A1
The Quartz Balance QO 40A1 provides a real-time, progressive indication of coating thickness during deposition, for high accuracy and reproducibility in coatings production.
Description
The thickness of both evaporated and sputter coated films can be monitored. The sensor head is a water cooled, non-magnetic housing which is permanently positioned in the vacuum system. The crystal face is parallel to the water cooling feedthrough pipes. The Quartz Balance QO 40A1 is mounted on a DN 40CF flange with two Ø6 pipes and Microdot S-50 coaxial connector. Customized insertion length 130 – 500 mm (other on request).
Technical data
| Mounting flange | DN 40CF (rotatable) |
| Max. operation temperature | up to 300°C (with water cooling) |
| Water cooling (required) | water flow > 0.5 l/min temperature: 20 – 30 °C max pressure: 6 bar |
| Crystal frequency | 4.8 – 6 MHz, 14 mm diameter (industry standard) |
| Insertion length | dependent on specification and geometry of the chamber |
| Bakeout temperature | up to 150 °C |
Features
- Water-colled sensor head
- Easy exchangeable quartz
Options
- Customised insertion length
- With or without integrated manual/electro-pneumatic shutterDifferent mounting flanges (e.g. DN 40 KF)
- Other quartz balance geometries on request (e.g. perpendicular head geometry)
- Linear shift