Noncontact Sheet Resistance Instrumentation

30C9 Inline Sheet Resistance Meter

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multiple eddy current sensors measure Ohms/sq inline, in real time, and without contact eddy current sensor measuring sheet resistance of a thin film in a vacuum coater inline software to record sheet resistance of web of material in real time

Inline Noncontact Eddy Current Sheet Resistance Meter for Glass and Thick Films

  • Large gap for thick materials and substrates
  • Great for monitoring cross-web and down-web consistency
  • Works in vacuum or atmosphere, wet or dry processes
  • Noncontact measurement of ohms/square, ohms-cm, resistivity, thickness, and more
  • Choose sensors in one of four ranges from .005 ohms/square to 100,000 ohms/square
  • Add additional sensors later to measure additional points or to widen the range
  • Real-time monitoring of moving materials via PC or LAN

Four Ranges to Choose From

Up to five significant digits available, depending on instrument range.

Instrument Range Dynamic Range in Ohms/square Significant Digits Available at Each Order of Magnitude
Low End High End 10k 1k 100 10 1 .1 .01 .001
×10 5 100,000 1 2 3 4 5
×1 .5 10,000 1 2 3 4 5
÷10 .05 1,000 1 2 3 4 5
÷100 .005 100 1 2 3 4 5
Instrument response rate: 40 ms
Display response rate: 300 ms
Max web speed: 1000 m/min
Reading drift with temperature: No more than .06% of total resolution per degree Celsius per hour
Gap size: 9 mm
Minimum sample size: 9 cm diameter circle
Spatial resolution: 9 cm diameter circle
Maximum sample thickness: 4.5 mm
Reach in web: 30 cm
Maximum web width (while reading entire sample): 40 cm
  • Anti-static/conductive films
  • Antennas
  • Auto
  • Batteries
  • Decorative films/paper
  • Displays
  • Flex circuitry and flexible circuit boards
  • Galvanic coatings
  • Glass windows
  • Metalized capacitor foil
  • Metalized labels
  • Microwave susceptors
  • Packaging
  • Radar absorbent materials
  • Reflectors and reflective materials
  • Semiconductors
  • Solar
  • Transparent conducting film

Options and upgrades

All options and upgrades are available for purchase with the original unit and for at least one year after purchase.

  • Additional sensors:

    The 873 Interface Module can accommodate up to 12 sensors. A user may want to purchase additional sensors in order to increase the range of the entire system or to take measurements at two or more physical locations.

  • Vacuum-ready package:

    The sensor is vacuum ready; however, optional vacuum-ready cabling, brackets, and feedthrough(s) will be required for vacuum applications.

  • Optional computer:

    Delcom can source a laptop, desktop, tablet, or industrial touchpanel PC for customers, if needed.