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ProboStat Overview

The sample under test rests on a ca. 50 cm long support tube of alumina, inside a closed outer tube of alumina or silica. The sample can be contacted with 2, 3 or 4 electrodes of e.g. platinum, using disk, van der Pauw, or bar geometries. A spring-loaded alumina assembly holds the sample and electrodes in place. 16 electrical feedthroughs allow use of 4 shielded electrode leads, surface guard, and up to three thermocouples (e.g. for Seebeck coefficient measurements). Electrical connections are made via coax cables suitable for standard impedance spectrometer connectors, and standard thermocouple compensation cables. Gases can be fed in single or dual chamber modes directly onto or from electrodes, allowing measurements under controlled atmospheres, transport number measurements in gradients, and testing of fuel cell, pump, and sensor components. Gas supply is via Swagelok quick-connects.

   

Materials properties measured and applicable methods:

  • Conductivity vs T, pO2, pH2O, etc.

  • DC, AC, impedance spectroscopy

  • Dielectric properties, loss, etc.

  • Disk, van der Pauw, and bar geometries

  • 2, 3, and 4 electrodes

  • Ionic transport number

  • Proton transport number

  • H/D isotope effects

  • Seebeck coefficient

  • I-V-characteristics

  • Fuel cell components and single cell testing

  • Electrode kinetics

  • Electrochemical pumping, gas permeation and electrocatalysis with gas analysis (e.g. GC or MS) on outlets

  • Sensor testing

  • Poling of ferroelectrics possible with the high-voltage (kV) version

  • High-current version

  • Annealing or sintering under controlled atmosphere


Example of connection to disk samples for impedance measurements. The schematics show principle of spring loads and regular 2-electrode 4-wire setup with dual gas supplies and thermocouple. Part of base unit with feedthroughs is shown in the photo below.

 

 

 

 

 

 

 

 

 

 

 

 

 

We also provide:

  • Measurement software

  • Furnaces and temperature control

  • Atmosphere control and gas mixing

  • Measurement instrumentation

  • Multiplexing of several cells to e.g. one impedance spectrometer

  • Measurement systems: Sample holder, Furnace, Instrument(s), Control software

Availability and pricing

Delivery time: normally between 6 and 8 weeks.
Prices: contact us or our representatives.

 

Brochure

Brochure on the ProboStat and accessories

 

General terms

2 year warranty (except on hot-zone parts) and free email support.

Specifications, terms, and prices/exchange rates may change. Local deviations may apply.

The packages described include the cell and its connections and furnishing as described. 

Furnace, power supply and controller, gas supply/mixer and measuring instrumentation are not included.

 

 

 

 

 

 

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