ADVANTAGES OF EDDY CURRENT TECHNOLOGY

Nondestructive

SPECIFICATIONS

Reads through insulating layers

Measures moving material

Nearly instantaneous readings

Provides real-time process inspection

Reach into material:

Sensor gap:

20 cm

3 mm

Minimum sample

size:

3 cm diameter circle

Spatial resolution:

Reading rate:

Reading display rate:

3 cm diameter circle

30 ms

REDUCE PRODUCT AND LABOR COSTS

Automate testing—no more manual probing

Test 100% of material without damage

Address coating issues as they happen

Avoid further processing of out-of-spec material

240 ms (displays the

average of 8 readings)

APPLICATIONS—Designed for use on glass, wafers,

film and more, including:

FEATURES OF THIS CONFIGURATION

Touch screens, flat screens, ITO, TCOs, etc.

Carbon nanotube, graphene, silver nanowire, etc.

Semiconductor materials

Photovoltaic materials

Architectural glass (Low-E), smart glass

OLED and LED applications

Packaging, decorative films/paper, metalized labels,

microwave susceptors, reflective materials

Flex circuitry and flexible circuit boards

Metalized capacitor foil

Low observables

Measures sheet conductance, sheet resistance,

thickness (with known resistivity), and resistivity

(with known thickness)

Simple one-button operation

Read via LCD, software, browser, or PC application

Swap sensors of other types and ranges

Use up to eight sensors at once with one interface

module and software

Software includes automatic sample detection,

reading, recording, manual mapping, pass/fail, and

exportation to .csv file and Microsoft Excel

Remotely read and control sensors with Modbus or

web-based application

Batteries and fuel cells

De-icing and heating products

Antennas

Single point, detached, caliper-style sensor

Small footprint

Calibrate meter in less than one minute

Automatic compensation for temperature drift

DATASHEET FOR MODEL:

20J3 Sensor and 873 Interface Module

METER RANGES—Delcom meters are available in one

of four ranges.

a distance detector, or calibrating the meter to expect

the material at a known elevation.

From 5 to 100,000 ohms/square

From .5 to 10,000 ohms/square

From .05 to 1,000 ohms/square

From .005 to 100 ohms/square

ACCURACY—Delcom meters are calibrated to better

than 99.9% accuracy against National Institute of

Standards and Technology (NIST) standards. User can

calibrate a meter with one standard in one minute.

RESOLUTION—Significant digits available at each order

REQUIREMENTS

of magnitude for each of the four meter ranges.

100–120/200–250 VAC

60/50 Hz

10°C–60°C

DIMENSIONS AND WEIGHTS

LINEARITY—Delcom guarantees no more than 3%

deviation from the true sheet resistance value of tested

material. The chart below shows a Delcom meter tested

against 10 NIST, VLSI, and MSA standards.

20J3 Sensor:

20J3 Stage:

873 Interface Module:

33 × 5 × 5 cm, 1 kg

55 × 47 × 8 cm, 10 kg

22 × 18 × 10 cm, 2 kg

61 × 61 × 16 cm, 13 kg

20J3 Stage packaged

for shipping:

20J3 and 873 packaged

for shipping:

46 × 41 × 21 cm, 9 kg

20J3 STAGE—Optional stage for precise sample

control.

REPEATABILITY—Delcom meter readings are

effectively 99.9% repeatable if sample placement and

environmental factors, such as temperature, are held

constant.

TEMPERATURE COMPENSATION—The baseline

readings of eddy current instruments drift with changes

in ambient temperature. Delcom benchtop sensors are

compensated so they drift no more than .04% of total

resolution per degree Celsius per hour.

SOFTWARE—Optional software includes five

different modes optimized for common user applications.

EFFECTS OF ELEVATION ON READING—The

elevation of the conductive layer in the sensor gap

affects the meter readings. This effect can be addressed

through the use of a stage, automatic compensation with