ProboStat™ ACIS is a sample holder dedicated for AC conductivity measurements and 2-electrode impedance spectroscopy on small disk samples at high temperatures and under controlled atmospheres.
Special design of the hot-zone parts facilitates mounting and replacement of test samples compared with the standard ProboStat™ furnishment.
The test sample rests in a support tube, is contacted by electrode connects, and held stably in place with a spring load assembly. The setup is assembled in a single chamber mode and can be fed with virtually any gas. The sample holder is designed to operate at near-atmospheric pressure, but can be pumped to low vacuum, or hold up to 15 bar. Electrical connections are made via standard coax cables.
ProboStat™ ACIS Compatibility
The system is supplied with a standard ProboStat™ base unit and can be expanded for any sample geometries and measurements that ProboStat™ can support.
The ProboStat™ ACIS works well with all instrumentation such as impedance spectrometers, LCR meters and potentiostats from Solartron, PAR, Novocontrol, Autolab, Gamry, HP/Agilent, etc.
ProboStat™ ACIS Specifications
Temperature range:
- RT - 1600 °C
Atmospheres:
- Oxidizing, inert, reducing
- Wet, dry
- Corrosive optional
- 0.01 mbar - 1 bar (15 bar optional)
Base unit:
- 6 BNC electrode connections
- 3 thermocouple connections
- 4 Swagelok quick-connects - two gas in and two gas out
- 16 mini-contacts for detachable electrode contacts and thermocouples
- 3 switches for grounding and shielding options
- Cooling/heating water hose fittings
Hot zone parts:
- Specially designed sample support tube of alumina
- Spring-load assembly of alumina
- 2 electrode contacts: Pt+alumina
- Thermocouple: type S or K
Test sample size:
- Disk diameter: max 15 mm
- Height: max 10 mm
Outer system dimentions:
- Enclosing tube diameter: 40 mm
- Overall length: 75 cm
Materials properties measured and applicable methods:
- AC conductivity vs T, pO2, pH2O, etc.
- Impedance spectroscopy
- Bulk, grain boundary and electrode impedance
- H/D isotope effect
- Fuel cell components test
- Dielectric properties
Fig. ProboStat™ ACIS setup:
- Spring-loaded system
- Test sample
- Electrode contacts
- Sample support tube. The standard thermocouple is inside of the sample support tube.
