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Inficon STM-2 USB Thin Film Thickness/Rate Deposition Monitor

The STM-2, small in size and price, big in performance. This USB powered thin film monitor comes with everything you need to connect a QCM sensor/feedtrough to a Windows® computer. Allowing up to eight STM-2s monitoring up to eight sensors can be connected to a computer simultaneously.


  • Most economic QCM monitor
  • Internal oscillator (no external oscillator or power supply is required)
  • High accuracy at 10 measurements per second
  • Compatible with an external oscillator
  • Size and simplicity make setup & operation easy & efficient


  • Research and development
  • Industrial vacuum coating
  • Display
  • Optics
  • Semiconductor
  • Solar


  • We do not recommend extending the USB beyond the cable shipped with the STM-2.
  • Additionally, with the BNC cable, there is a length maximum from oscillator to crystal of 1 m. This includes the BNC from the oscillator to the feedthrough as well as the in-vacuum cable.
Complete STM-2 deposition control system

A complete STM-2 deposition control system requires four components:

*Connected to computer

For more detail information, please contact or +1 412 387 9200.

Specifications Table

Interface ConnectorUSB, v1.1 or later capable of providing 400 m A, 5 V (dc)
Sensor InputOne, female BNC
Measurement Frequency Range6.0 to 5.0 MHz (fixed)
Frequency Resolution+/-0.03 Hz at 6 MHz
Measurement Interval0.10 s
Reference Frequency Stability+/-2 ppm
Thickness and Rate Resolution/Measurement+/-0.037 Å
Thickness Display Resolution1 Å (display on software only)
Computer RequirementsWindows 2000, Windows XP, Windows Vista, Windows 7 or Windows 8 with one available USB 1.1 (or later) port for each STM-2
Compatible SensorsNon-shuttered single QCM sensor
Weight0.13 lbs (0.057 kg)
Dimensions4.5" x 3" x 1" (114mm x 76mm x 25mm)

Product Brochure
For a download of the Product Brochure, click here.
Product Downloads
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To speak with someone directly, please call +1 412 387 9200 or email

Ordering Table

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Description Manual Part No Price In Stock Add
STM-2 USB Thin Film Rate/Thickness Monitor
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