Presentation on theme: "Broadband Turnkey System Concept 80"— Presentation transcript:
1Broadband Turnkey System Concept 80 Novocontrol Technologies
2Novocontrol Technologies GmbH & Co. KG Top-class impedance analyzers with test interfaces for various applicationsReliable sample environment for various temperature ranges and pressure variationTurnkey Dielectric and Impedance SpectrometersSoftware for instrument control, automation, and data analysisSample cells for a large variety of applications
3Impedance Measurement Requirements for Dielectric Measurements Broad frequency rangeWide impedance rangeSmall loss factors tan() = ’’ / ’ = -Zs’ / Zs’’Sample is in first order approximation a capacitorCapacitive impedance Z = j / (C) Relaxation usually adds small changes in Z DC conductivity adds parallel resistance
6Principle of measurement up to MHz frequencies using the Alpha-A VoltageCurrent harmonic base wave Fourier transform over n periodsPermittivityEmpty cell capacityConductivityd electrode spacing, A electrode area
8Alpha-A Impedance analyzer system highlights Broad frequency range 3 µHz MHz (> 13 decades)Ultra wide impedance range Ω (18 decades) covers range from conductors to best isolators in a single instrument set-upUltra wide capacity range F allows broadband measurement of smallest capacities down to 1 fF. High phase accuracy ( °) 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.
9Measurement examples Alpha total impedance range Typical results covering 18 orders of magnitude dynamics
10Alpha-A Impedance analyzer system highlights High speed measurements for online monitoring of time-dependent processes in the 5 ms rangeAutomatic self calibration and diagnosis by user compensates long term internal drift and verifies functionality.Precision digital frequency response analyzer up to 40 MHz for two channel gain phase measurements with 0.001° phase - and 10-5 in amplitude resolution included. Operates like a broadband lock-in amplifier with two channels, extended accuracy and frequency range.Optional control WinDETA software for turnkey calibration, operation, data evaluation, 2- and 3- dimensional graphical representation including non linear spectroscopy.
11E4991A RF Material Analyzer Frequency range: 1 MHz .. 3 GHzImpedance range: 100 m kAccuracy: % of measured value (best)Capacity range : fF nFtan() range: 3 m .. 3 k tan() accuracy: 3 m (best)Phase angle range: degrees Accuracy: ° (best)Dc bias voltage range: 40 V;Accuracy mVUser calibrations Load, short, open, low loss capacitorsample cell short and openSample cells: Two electrode RF reflection cellfor temperatures from °C
12Concept 80 System Constituents: Two impedance analyzers with sample cells:a) Alpha-A (3 µHz to 20 MHz) with Alpha Active Sample Cell ZGSb) E4991A RF Materials Analyzer (1 MHz to 3 GHz) with RF Dielectric sample cell BDS 2200 (14 mm version) or BDS 2100 (7 mm version)RF mounting stageQuatro Cryosystem: -160 °C to 400 °CFull software package WinDETA+WinPLOT+WinTEMP+WinFITData Acquisition Unit (computer with GPIB interface, 22” LCD monitor, printer)
13Alpha-A Active Sample cell ZGS (3 µHz .. 20 MHz; 40 MHz with Alpha-AT) Sample cell with integrated test interface (current-to-voltage converter/amplifier) and optimized frequency performance.High-performance dielectric, conductivity or impedance measurements from 3 µHz up to 40 MHz (with Alpha-AT only).Rigid air-line connection from electronics to electrodes suppresses performance-limiting cable effects at high and low frequencies due to cable inductance and piezo-induced charges caused by mechanical noise.Temperature range: -160 °C °C
14RF sample cell and extension line (1 MHz to 3 GHz) BDS 2200 RF dielectric sample cell
15RF extension line (1 MHz to 3 GHz) High-temperature stable, low-loss precision line with two APC-7 connectors and Pt100 temperature sensor.Mounted between the impedance input of the RF Analyzer and the RF sample cell for thermal isolation.The combination of sample cell and extension line can be operated in the temperature range from -160°C to 400°C.
16Quatro Cryosystem: High Precision Turnkey Temperature Control 4Range: -160°C to 400°CRamps: 0.01°C/min to 20 °C/minStability: 0.01°COvershooting after set point step:typically < 0.2°CStabilization times typically < 8 minutes(for 0.1°Cstability)RC network measurement Alpha-AT+ZG4 now operates up to 40 MHz! Scanned copy to be inserted.low nitrogen consumption due to automatic pressure-temperature adaptationautomatic adaptation of controller parametersvacuum-isolated cryostat and nitrogen lines
17Quatro CryosystemA heating element builds up a specified pressure in the liquid nitrogen dewar in order to create a highly constant nitrogen gas flow.Pressure and temperature in the dewar are measured by two channels of the Quatro controller.Heated by a gas jet, the nitrogen gas flows directly through the sample cell which is mounted into the cryostat.The gas and sample temperatures are measured by the two remaining channels of the QUATRO controller.The four channel arrangement allows stable, fast and safe system operation in combination with low liquid nitrogen consumption (economical mode).The cryostat is vacuum isolated by a two- stage rotary vane vacuum pump, providing thermal isolation by low vacuum(< 10 µbar).4RC network measurement Alpha-AT+ZG4 now operates up to 40 MHz! Scanned copy to be inserted.
18Quatro CryosystemRC network measurement Alpha-AT+ZG4 now operates up to 40 MHz! Scanned copy to be inserted.
19WinDETA Control and Data Visualisation Software RC network measurement Alpha-AT+ZG4 now operates up to 40 MHz! Scanned copy to be inserted.
20WinDETA Control and Data Visualisation Software Control and evaluation software for dielectric and impedance spectroscopyUniform user interface for several dielectric/ impedance analyzers and temperature controllers nearly independent of hardwareFlexible experiment set-up: control of frequency, temperature (WinTEMP option), ac voltage, dc bias, and time in any multi dimensional arrangementEvaluates over 30 different electric quantities like e.g. permittivity, conductivity, inductance, etc. from measured impedanceGraphical online display of measured data in two or three dimensional diagrams (WinPLOT option), temperature curve and system statusAutomatic calibration of hardware devices and sample cellsEx- and imports data in several flexible ASCII formatsCurve fitting software WinFIT for equivalent circuit modelling, data transformations like WLF, Havriliak-Negami, and time domain conversionSupports Win2000, XP, Vista, Win7.RC network measurement Alpha-AT+ZG4 now operates up to 40 MHz! Scanned copy to be inserted.
21WinFIT Curve Fitting Software Non linear curve fitting in the frequency domainSpecial relaxation fit functions like, e.g, Havriliak Negami, Cole Cole, Cole Davidson, Debye etc.Automatical evaluation of a series of spectra taken at various temperaturesSeparation of relaxation and conductivity contributionsAutomatic creation of master plot representationsNon linear curve fitting in the temperature domain including Vogel - Fulcher and Williams Landel Ferry (WLF) fit functionsRelaxation time and maximum relaxation frequency determinationArrhenius activation plot related to activation energy and glass temperatureDielectric data conversion (Fourier Transform) from frequency to time domainComplete dielectric time domain representation including relaxation time distribution, relaxation function, step response function, peak answer function, time dependent dielectric constant and conductivityShifts, deletes and inserts data points with a single mouse clickConnects data curves being measured in different frequency ranges with different analyzersRC network measurement Alpha-AT+ZG4 now operates up to 40 MHz! Scanned copy to be inserted.