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Download - Novocontrol Spectrometers for Dielectric ：介电下载- novocontrol光谱仪
* Broadband Turnkey System Concept 80 Novocontrol Technologies Novocontrol Technologies GmbH Co. KG Turnkey Dielectric and Impedance Spectrometers Top-class impedance analyzers with test interfaces for various applications Reliable sample environment for various temperature ranges and pressure variation Software for instrument control, automation, and data analysis Sample cells for a large variety of applications Impedance Measurement Requirements for Dielectric Measurements Broad frequency range Wide impedance range Small loss factors tan(?) = ?’’ / ?’ = -Zs’ / Zs’’ Sample is in first order approximation a capacitor Capacitive impedance Z = j / (?C) Relaxation usually adds small changes in Z DC conductivity adds parallel resistance Concept 80 (Table not included) Current harmonic base wave Fourier transform over n periods Voltage Permittivity Conductivity d electrode spacing, A electrode area Principle of measurement up to MHz frequencies using the Alpha-A Empty cell capacity Alpha-A modular measurement system Alpha-A Impedance analyzer system highlights Broad frequency range 3 μHz .. 40 MHz ( 13 decades) Ultra wide impedance range 10-4 .. 1014 Ω (18 decades) covers range from conductors to best isolators in a single instrument set-up Ultra wide capacity range 10-15 .. 1 F allows broadband measurement of smallest capacities down to 1 fF.? High phase accuracy (2.10-3 °) and loss factor tan(δ) absolute accuracy (3.10-5) for low loss dielectric materials and isolators broadband characterization. Supports non-linear Dielectric, Conductivity and Impedance Spectroscopy or gain phase measurements in combination with all test interfaces. Measurement examples Alpha total impedance range Typical results covering 18 orders of magnitude dynamics Alpha-A Impedance analyzer system highlights High speed measurements for online monitoring of time-dependent processes in the 5 ms range Automatic self calibration and diagnosis by user compensates long term i
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