Non-Contact Sheet Resistance Instrumentation

S3 Sheet resistance meter

eddy current sensor measuring silicon wafer eddy current sensor with automated software one sided eddy current precision measurement with stage stage for single sided eddy current precision measurement inline eddy current meter

Non-Contact Eddy Current Resistivity Meter for Thick & Curved Materials

  • The smallest, simplest, most affordable high-precision non-contact sheet resistance sensor available
  • Non-contact measurement of Ohms/sq, Ohms-cm, resistivity, thickness, and more
  • Choose a sensor in one of four ranges, from .005 Ohms/sq to 100,000 Ohms/sq—add other sensors later
  • Reads any conductive coating—on even the thickest nonconductive substrates
  • Options include PC-based productivity software, stage, and more
  • Performance limited by "lift off" phenomenon—elevation of sensor above conductive layer must be carefully controlled

Four Ranges to Choose From

Up to 4.5 significant digits available, depending on instrument range:

Instrument Range Dynamic Range in Ohms/sq Significant Digits Available at Each Order of Magnitude
Low End High End 100k 10k 1k 100 10 1 .1 .01
X10 5.000 100,000 1 2 3 4 4.5
X1 .5000 10,000 1 2 3 4 4.5
÷10 .0500 1,000 1 2 3 4 4.5
÷100 .0050 100 1 2 3 4 4.5
Response rate 25 readings per second
Max web speed 1000 m/min
Reading drift with temperature Less than .25 % of max resolution per degree C
Gap size Gap between sensor and material can vary, but it must be carefully controlled
Minimum sample size 2.5 cm diameter circle
Spatial resolution 2 cm diameter circle
Maximum sample thickness Accommodates infinite non-conductive substrates
Reach in web Not applicable
Maximum web width (while reading entire sample) Not applicable
Display response time Programmable
  • 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.

  • PC based software upgrade:

    This configuration does not require software for operation; however, the user can upgrade to Delcom’s productivity software for at least one year after initial purchase. The software requires a PC running Windows XP or newer OS. Delcom's software is designed to make common tasks as fluid, intuitive, and easy as possible.

  • Additional sensors:

    The 873 interface module can accommodate up to three sensors. A user may want to purchase additional sensors in order to increase the range of the entire system or to make measurements at two or more physical locations.

  • S3 stage:

    The sensor is designed to be used without a stage. However, for applications requiring a high level of precision we recommend a stage. The stage will hold the elevation of the conductive layer in the sensor gap and allow for better XY positioning of the material under the sensor.

  • Optional computer:

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