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Jandel CYL-RM3000 Four Point Probe System

General purpose portable Four Point Probing System for measuring sheet resistance or volume resistivity. This system includes the Jandel Cylindrical Probe along with the RM3000 Test Unit.

Jandel CYL-RM3000 Four Point Probe System

About the RM3000 Test Unit

  • The RM3000 Test Unit is a specialty electronics instruments designed specifically for the four point probe meas-urement. It features high accuracy, an excellent range, and many features which simplify the four point probing measurement. The following are features of the RM3000 Test Unit: The measurement range of the RM3000 Test Unit is from 1 milliohm-per-square (10^-3) up to 5 x 10^8 ohms-per-square with 0.3% accuracy. The volume resistivity range is from 1 milliohm-cm (10^-3) up to 10^6 ohms-cm.
  • The RM3000 includes PC control software which can be used for data logging (storing data in the CSV format) and measurement conversion to ohms-per-square or ohms-cm.
  • The RM3000 reads-out directly in ohms-per-square (or toggle to millivolts) without requiring the use of the software or a PC.
  • The RM3000 has onboard non-volatile memory so that up to 50 measurements can be stored internally and then downloaded and saved all at one time using the software. Alternately, each measurement can be saved to a PC as it is made.
  • The RM3000 has an auto-range button that can be used to automatically determine the optimum input
    current for a given material without using the trial and error method.
  • The RM3000 has forward (FWD) and reverse (REV) buttons to reverse the direction of current flow. A
    common way to determine if a measurement is valid is to reverse the direction of current flow and then
    check to see if the forward and reverse voltage readings correlate well, i.e., the values should be similar,
    but with the reverse current voltage being a negative value. More about reversing the input current:
    reversing_current.pdf

About the Jandel Cylindrical Probe

The Jandel Cylindrical probe is built to a high level of mechanical accuracy as are all Jandel four point probe heads. Specifications for radii, spacing, planarity, and spring load are verified by calibrated instruments including a video inspection system, an optical interferometer, and an electronic force gauge. Each probe tip is guided by upper and lower jeweled needle guides. Additional information about probe quality can be found in the Jandel probe head application notes.

PROBE SPACING 25 to 50 mils (0.635mm to 1.27mm) in 5 mil (127 micron) increments, also 1.0mm and 1.59mm. 20
TOLERANCE +/-0.01 mm
ARRANGEMENT Linear or Square array
NEEDLES Solid Tungsten carbide Ø 0.40 mm (Ø 0.30 mm for close-spacing) 45 degree included angle, phosphor-bronze connecting ligament
OTHER MATERIALS 50% osmium alloy tips available
RADII 12.5 μm min. to 500 μm max. polished with 2 μm diamond
RETRACTION TO INSULATING PAD 0.5 mm
PLANARITY +/- 0.025 mm or better
LOADS Low: 10-30g, Medium: 30-60g
High: 60-150g
LEADS 4-way cable Teflon insulated
(screened on cylindrical)
ELECTRICAL LEAKAGE 1013 ohms resistance between needles at 500 volts

 
Jandel Engineering RM3000 Test Unit Four Point Probe Measurement Electronics

The RM3000 Test Unit reads out directly in ohms-per-square (or millivolts), and it includes a USB connection and PC software to save the data as either sheet resistance or as volume resistivity. Information regarding the PC software can be found here:

http://www.fourpointprobes.com/rm3ar_instructions.pdf

Cylindrical Probe with Small Nosepiece Shroud combined with the RM3000 Test Unit*
Cylindrical Probe with Small Nosepiece Shroud combined with the RM3000 Test Unit *Inclues a 1 meter long cable

Small Shroud Installed on Cylindrical Probe Nosepiece

Cylindrical Probe Pressure Adjustment

The Cylindrical Probe has spring loads which are user adjustable within one of three ranges. The probe shown here has been factory set to 100 grams per tip, however, the user can increase the load to as high as 150 grams per tip or as low as 60 gram per tip by moving the red Teflon knob towards either the “H” for higher or towards the “L” for lower.


Downloads

CYL Probe combined with the RM3000 meter, brochure [402K PDF file] CYL Probe combined with the RM3000 meter, brochure [453K PDF file]
Cylindrical Probe Brochure Online Cylindrical Probe Brochure Online [484K PDF file]
Information regarding the PC software for the RM3000 Test Unit Information regarding the PC software for the RM3000 Test Unit [772K PDF file]
Additional Information about probe quality [194K PDF file] Additional Information about probe quality [194K PDF file]
Additional Information about reversing current [151K PDF file] Additional Information about reversing current [151K PDF file]

 


We Recommend

If you do not require as great a measurement range as the RM3000 Test Unit provides, you might be interested in the:

CYL Probe with HM21 Hand Held Meter

 


Four-Point-Probes is a division of Bridge Technology. To request further information please call Bridge Technology at (480) 988-2256 or send e-mail to Larry Bridge at: sales@bridgetec.com