
Thermal Desorption Spectrometer TDS 40A1
The TDS 40A1 is designed for Temperature Programmed Desorption (TPD) applications.
Manufacturer
Prevac
Prevac are a world leader in the design and production of analytical and deposit scientific and research equipment. Their systems operate in a high and ultra high vacuum environment. They design and construct UHV and HV systems fully adapted to the individual requirements of research projects and industrial applications.

Key Features
- Completely programmable
- Unique filament design
- Wide operation temperature range
Description
TPD involves heating a sample under UHV conditions and simultaneously measuring a number of desorbing gas species as a function of sample temperature. A custom designed conical sampling end piece ensures the best possible response to desorbing species.
Technical data
Mounting flange | DN 40 CF (non-rotatable) |
Bakeout temperature | up to 150 °C |
Insertion length | 190 mm (other on request), OD: 36.8 mm |
Mass range | 1 to 300 amu |
Mass filter | quadrupole |
Detector type | electron multiplier (EM) |
Resolution | better than 0.5 amu |
Sensitivity | 2×10-4 A/Torr (FC), |
Minimum detectable partial pressure | 5×10-11 Torr (FC), 5×10-14 Torr (EM) |
Working pressure | < 10-4 Torr to UHV (FC) < 10-6 Torr to UHV (EM) |
Downloads

Instruments with Electronics Brochure
Options
- Quadrupole MS: 100, 200 or 300 amu
- High stability linear shift
- Differential pumping (1 stage)
Service Support
Comprehensive repairs and servicing
Annual Support Programs
Your metrology instrumentation is a major investment that is critical to your business operation and success. In today’s competitive climate, it is more important than ever to extend the functionality and peak performance of your metrology equipment years beyond the expiration of your factory warranty. CN Tech’s Support Programs will help ensure that your investment is protected, and that you and your instrument’s are always operating at peak performance.
With over 20 years’ experience servicing and repairing you can be assured that your system is in safe hands. The independent services we offer include system relocation, maintenance visits, parts and consumables, and break down interventions.
CN Tech’s Support Programs are an economical way to guarantee optimal working condition:
- Annual Preventive Maintenance
- Priority Technical Assistance
- Preferred Parts Availability
- On-Site User Training
- Remote Diagnostics
- No surprise repair expense and much more!
Support Contact Example
An example of our service and support contracts are shown below:

Metrology & Instrumentation Annual Support Programs 2024/25
CN Tech's Support Programs will help ensure that your investment is protected, and that you and your instrument’s are always operating at peak performance.