RMS1650 Ultra-High Temperature Resistivity Measurement System — 1

Overview

The RMS1650 Ultra-High Temperature Resistivity Measurement System is engineered for the rigorous electrical characterization of insulating and dielectric materials. Utilizing a proprietary guarded three-terminal electrode configuration—secured by a patented high-temperature fixture design (Patent No. 2019204134342)—the system complies with established testing protocols for determining elevated-temperature bulk and surface resistivity.

The instrument enables the precise, in-situ acquisition of resistance, resistivity, and leakage current degradation kinetics as a function of both temperature and time. Capable of operating under ambient air, vacuum, and flowing gas atmospheres, the RMS1650 is a premier analytical platform for evaluating extreme-environment insulation performance. It has been successfully deployed in the development of critical aerospace sensors and remains the system of choice for advanced high-temperature insulation research across leading academic institutes and industrial R&D centers.

At its core, the system features an imported refractory corundum (alumina) muffle chamber that resists oxidation and supports continuous operation up to 1600°C. A built-in metallic Faraday shield effectively attenuates external AC electromagnetic interference, working alongside a high-stability PID controller to achieve an exceptional thermal regulation accuracy of ±0.5°C. Pure platinum electrode fixtures ensure uncompromised corrosion and oxidation resistance, facilitating rapid thermal equilibration and stable ohmic contacts. Additionally, guarded analog signal routing minimizes parasitic capacitance and AC noise from the furnace heating elements, thereby significantly extending the test frequency bandwidth and data fidelity.

Specifications

Temperature RangeRT to 1600°C
Thermal Control Accuracy±0.5°C
Heating Rate0-10°C/min (Typical: 3°C/min)
Sample GeometryDisks: φ < 20 mm, t < 5 mm (RMS1650I/S/P)
Bars: 10 × 10 × 20 mm (RMS1650C)
Operating Ambient Environment5°C to 40°C
Measurement AtmosphereAir / Flowing Gas
Measurement ChannelsSingle Channel
Electrode MaterialPure Platinum
Measurement AccuracyInstrument range-dependent
Power Supply220V / 50-60Hz, 4800W
Dimensions (L × W × H)1260 × 760 × 1727 mm
Weight200 kg
Warranty1 Year

Applications

  1. High-temperature electrical characterization of dielectric and insulating ceramics.
  2. Degradation kinetics and leakage current analysis for aerospace sensors.
  3. Evaluation of extreme-environment insulation performance for advanced materials.

FAQ

  • Why do 2-wire measurements fail completely when measuring ultra-high resistivity at 1600°C?

    At 1600°C, the surface of the ceramic sample and the surrounding atmosphere become slightly conductive, creating massive surface leakage currents that artificially lower the measured resistance. The MatMeas RMS1650 eliminates this fundamental error by utilizing a proprietary guarded three-terminal electrode configuration that mathematically shunts the surface leakage to ground, ensuring you measure only the true bulk volume resistivity.

  • How does the RMS1650 protect its ultra-sensitive electrometer from 1600°C thermal noise?

    Standard high-temperature setups suffer from severe thermal EMF and electromagnetic noise emitted by the heating elements. The RMS1650 integrates a heavily shielded, actively cooled measurement core that isolates the picoammeter (pA) circuitry from the furnace, delivering absolutely pristine leakage current kinetics at extreme temperatures.

  • What is the maximum continuous operating temperature of the RMS1650?

    The RMS1650 features an imported refractory corundum (alumina) muffle chamber, allowing it to safely and stably maintain thermal conditions up to 1600°C without oxidation.

  • How does the system mitigate electromagnetic interference (EMI) at high temperatures?

    The system utilizes a built-in metallic Faraday shield alongside guarded analog signal routing (simulated wire shielding). This minimizes parasitic capacitance and eliminates AC noise induced by the furnace heating elements, ensuring high-fidelity measurements.

  • What are the compatible sample geometries for the test fixture?

    The standard models (RMS1650I/S/P) accommodate circular disk samples with a diameter < 20 mm and thickness < 5 mm. The RMS1650C model is specifically designed for rectangular bars measuring 10 × 10 × 20 mm.

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