Flood Source Power Supply FS40-PS

New power supply with touchscreen dedicated for Flood Source FS40A1.



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.


All adjustable parameters are displayed on the large TFT display with touchscreen. All settings can be manually adjusted or can be stored and recalled automatically after unit switch on. The unit also features a built in timer and automatic standby mode. The FS40-PS can be supplied as a full width 19″ rack mounting unit (3U height) or free standing. Unit can be remotely controlled via one of available interfaces. Unit also provides remote control of beam energy, emission current, focus and extractor voltages using analogue interface. Autosave function for saving your parameters/unit pre-set and applying them automatically after restart.

Technical data

Supply voltage 100 V – 240 V, 50/60 Hz
(power consumption max 75 W)
Beam energy
(low energy range)
0.01 – 50 eV, resolution 0.01 eV
Beam energy
(high energy range)
50 – 1000 eV, resolution 0.1 eV
Emission current 1 – 1000 μA, resolution 0.1 μA
Focus voltage 300 – 1000 V, resolution 0.1 V
Extractor voltage 0 – 150 V, resolution 0.1 V
Analog inputs 4 (0-10V)
Timer Dual mode timer 0s – 99h 59m
Communication interface RS232/485, Ethernet
Communication protocol MODBUS-TCP
User Interface 7” TFT display with touchscreen, digital encoder
Interface languages English, German, Polish
Dimensions 483 x 133 x 435 mm (W x H x D), 19″ rack mountable or alone
Weight (approx.) 5.2 kg


The FS40-PS power supply is designed for use with the FS40A1 Electron Flood Sources which are used for charge neutralization of insulator and semiconductor samples in XPS/AES and SIMS applications.



Instruments with Electronics Brochure

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  • Software control (Version Pro, Extended or Library Module).

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 2022/23

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.

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