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PRF-914 High Resistance Miniature Concentric Ring
Item Number:


Weight: 1 lbs (0.5 kg)
Length: 8.25 Inches (21 cm)
Width: 7.5 Inches (19 cm)
Height: 3.5 Inches (8.5 cm)

esd meter technical documents

PRF-914 High Resistance Miniature Concentric Ring

Accurately measure surface resistance of small areas

The PRF-914 Miniature E14 Probe Set accurately measures surface resistance of small areas up to 2.0x1014 ohms. It consists of a PRF-914 Concentric Resistance Fixture, dual shielded cables equipped with SMA and BNC connectors, and a BNC to male banana instrument adapter. The optional PRV-913 Verification Fixture is designed to confirm the proper operation of the PRF-912 and high resistance PRF-914 Miniature Probe Sets.

The PRF-914 is designed to work with a precision wide range resistance instrument, such as the PROSTAT PRS-801 Resistance System, and an insulated test bed. It provides surface resistance measurements in ohms per ESD S11.11 Surface Resistance standard. To estimate ASTM D-257 surface resistivity in ohms/square, multiply the fixture measurement by 10, i.e., add one decade.


0.9 to greater than 1.0x1014 Ohms (1.0E+14)

ASTM D-257:
Correction from ohms to ohms/square Multiply by 10

Length: 6.3 inches (160mm). Diameter 0.5 inches (12.7mm). High resistance cable connection end: 0.88” (22.5 mm) x 0.68” (17.3 mm)

Probe Weight:
2.0 ounces (57 grams)

Black anodized

Dielectric Material:

Contact Size:
Contact Size: Inner (Center) Contact Probe: 0.1 inches (2.54mm). Outer Contact Probes: Ten each 0.06 inches (1.59mm) diameter at 0.258 inches (6.56mm) bolt circle.

Dual RG-174 coaxial cables equipped with SMA connectors. Instrument Adapter for connection to Prostat PRS-801 Resistance System equipped with BNC male terminals to fit cable BNC female fittings.

Dual SMA with Source on the right and Sense of the left with ground.

Min. Sample:
0.32 inches (8.2mm) diameter

Probe Spring:
Force/Test 3.5 pounds (1.6 kg)

Probe Travel:
0.3 inches (7.8mm)

Not applicable. Fixture powered by resistance instrument.

Technical Documents:
» PRF-914 Data Sheet

arrow PRF-922 Minature 2-Point
PRF-914 Minature Cocentric Ring
PRS-801 Resistiance System