The Multi Height Microposition Probe combined with the ResTest Test Unit is a versatile four point probing system. It includes a fine X-Y stage for positioning small samples under the four point probe tips. The X-Y stage can be easily removed for measuring large samples such as substrates up to 10″ x 10″, or tall materials up to 6″ tall.
About the Jandel ResTest Four Point Probe
- Constant current source and meter for use in making the four point probe measurement.
- Measurement range: 10 milliohms-ohms-per-square to 10^6 ohms-per-square
- Displays either sheet resistance or volume resistivity.
- Save data using:
- PC connection
- Up to 99 measurements can be stored internally, or
- USB memory stick
- Accommodates either linear or square array probes and 6 choices of probe tip spacings
- Supports four measurements types:
- Sheet Resistance – Primary measurement value is display in Ohms/Square
- Wafer Resistivity – Primary measurement value is display in Ohms/Cm
- Volume Resistivity – Primary measurement value is display in Ohms/Cm
- Ohms Resistance – Primary measurement value is display in Ohm
- Three available current ranges:
- 0.5mA to 10mA
- 10uA to 100uA
- 1uA to 10uA
- Includes PC interface software
- Interfaces with Jandel four point probing units
Multi Height Microposition Probe
The Multi Height Microposition Probe comprises a hard anodised aluminium base 25cm wide, 29cm deep and 0.8cm thick. A 19mm diameter stainless steel column 20cm high screwed to the base supports the probe head raising and lowering mechanism incorporating the vertical slide, operating lever shaft, and micro-switch.
The vertical slide carries the probe-head, secured by a clamp screw. The probe-head is positioned so that the micro-switch does not pass current until the probes have made contact; lost motion ensures that the current is switched off before the probes are raised. The probe arm can be easily positioned on the vertical shaft to various heights to allow probing onto either flat materials or large or thick materials. For example, a shallow dish containing LN2 could be placed on the base plate and the arm could be positioned to allow the probe to be lowered onto a sample submerged in liquid nitrogen. With the X-Y stage removed, materials up to 10″ x 10″ x 6″ tall can be positioned under the probe arm. If necessary, a taller vertical post can be supplied for use in measuring taller items.
The Multi Height Microposition Probe includes a removable X-Y stage which can be bolted to the base plate to aid in positioning the materials accurately when probing onto small samples.
| Features of the Removeable X-Y Stage: |
- Precision ball-bearing X-Y stage with micrometer adjustments
- 25 mm x 25 mm X-Y travel
- 360 degree theta
- Sample holder for materials up to 76 mm in diameter
- Vacuum facility for use when needed – one hole in center
ResTest Four Point Probe Measurement Unit
The ResTest is a combined constant current source and digital voltmeter, which has been designed specifically for use with a four point probe to produce resistivity and sheet resistance measurements. The unit supplies a constant current and can display resultant voltage sheet resistance and volume resistivity.
The ResTest has a large color display and it can read-out in either sheet resistance in the range from 10 milliohms-per-square up to 106 (1 million) ohms-per-square. The range is not as great as the RM3000, however, it is faster and has a larger color display.
Cylindrical Probe Head
The Cylindrical probe head, one of which is included with the Multi Height Microposition Probe, can withstand temperatures from 77K up to 120C in it’s standard configuration. A modification to the Cylindrical probe will allow it to withstand temperatures from 77K up to 200C (in an oven). The Multi Height Microposition Probe is conservatively limited to 80C, however, temperatures up to 300C using a hot plate are okay if certain precautions are taken. The Cylindrical probe head is built to high standards of quality and accuracy. A brochure regarding the Cylindrical probe can be found here: https://four-point-probes.com/jandelcylindrical.pdf
An application note with information regarding the constructions and specifications of the Jandel Cylindrical probe can be seen here: https://four-point-probes.com/cylindrical_app_notes.pdf
Downloads
We Recommend
Multi Height Microposition Probe with RM3000 Test Unit features high accuracy, an excellent range, and many features which simplify the four point probing measurement: Multi Height Microposition Probe with RM3000 Test Unit
Four-Point-Probes is a division of Bridge Technology. To request further information please call Bridge Technology at (480) 219-9007 or send e-mail to Joshua Bridge at: sales@bridgetec.com
