Overview
The Solartron CellTest System is a multi-channel test system designed for the complete DC and impedance characterization of a wide range of energy storage devices such as batteries, fuel cells and super-capacitors. The speed, range and resolution of the CellTest system also make it suited to other research applications including the analysis of sensors, coatings, corrosion and general
electrochemical applications.
The CellTest system consists of one or more 1470E multi-channel potentiostats and multiple 145x series frequency response analyzers (FRAs) connected to a computer providing simultaneous DC and impedance tests on multiple cells. Each 1470E unit provides eight fully independent potentiostats, allowing up to eight separate cells to be tested simultaneously. Each channel is
completely independent allowing the same or quite different experiments to be run on each cell.
The CellTest system provides a wide range of experimental techniques, including charge / discharge, potentiostatic, potentiodynamic, galvanostatic, galvanodynamic, fast cyclic voltammetry, open circuit, fast pulse and step techniques, ohmic-drop analysis and impedance.
Simultaneous impedance tests can be run on multiple cells by connecting Solartron 145x series frequency response analyzer (FRA) modules to the 1470E. These FRAs can operate in single sine correlation or multi-sine / Fast Fourier Transform (FFT) analysis mode, providing the ultimate in speed, precision and accuracy. The 1455 FRA provides high performance impedance measurements over the frequency range 10μHz to 1MHz, while the 1451 FRA operates from 10μHz to 100kHz. Temperature controlled ovens and furnaces can be added to the system and automatically controlled from the PC over a serial communications link, providing the facility to test cells at different temperatures (for example for testing solid oxide fuel cells at up to 1000oC).
Ethernet control
The 1470E and 145x FRA units are Ethernet controlled providing either local or remote control of the instrumentation from a PC connected anywhere on the same Ethernet network. This allows experiments to be set-up and run from a quiet office environment while the test equipment and cells are located quite separately in another room or building. The Solartron CellTest system is the most advanced multi-channel battery, fuel cell, supercapacitor test system available, giving the ultimate in DC and impedance test performance.
Specifications
| PC Communication | Ethernet 10BaseT or IEEE488 (GPIB). Refer to back page for details |
| Number of Channels | 8 independent floating channels per unit |
| Counter Electrode (CE) | |
| Maximum voltage / current | +10V / -3V, ±4A |
| Maximum power per channel | 40W |
| Selectable bandwidth | 10, 100, 1k, 10k, 100k, 1MHz |
| Voltage measurement input (RE1, RE2) | |
| Connections | Driven shields for wide bandwidth |
| Maximum voltage | +10V / -3V |
| Voltage ranges | Auto-range or manaully selected 10v, 1V, 100mV |
| Accuracy | ±0.1% of range |
| Voltage resolution | 3µV |
| ADC | 16 bit 10,000 samples / sec |
| Input impedance | >10Gohm |
| Current Measurement input (WE) | |
| Maximum current per channel | +4/-4A |
| Current ranges | Auto-range or manually selected 5A 500mA, 50mA, 5mA, 500µA, 50µA |
| Accuracy | ±0.1% of range |
| Current resolution | 1.5nA |
| ADC | 16 bit 10,000 samples / sec |
| Experiment | |
| Maximum steps/experiment | 100 |
| Step types: | |
| voltage, current | constant, ramp, pulse (includes high speed GSM), cyclic voltammetry |
| power, resistance | constant level (discharge only) |
| other | rest (open circuit), loop |
| impedance | requires one or more frequency response analyzers |
| Step termination limits | voltage, current, power, resistance and charge. temperature (requires option 14703A) |
| Time to switch test type | 100µsec |
| Minimum sample rate | 1 sample / 100 seconds |
| Maximum sample rate | 10,000 samples / second |
| Measurement modes | Fixed sample rate or measure on change |
| Shutdown safety limits | voltage, current temperature (requires option 14703A) |
| Temperature control | Eurtherm 2000 Series controllers |
| Temperature Range | |
| Operating | 5º to 40ºc (41º to 104ºF) |
| Specified accuracy | 10º to 30ºC |
| Storage | -25º to 70ºC (-13º to 158ºF) |
| General | |
| Dimensions (w x h x d) | 450 x 286 x 496mm (17.7 x 11.3 x 19.5in) |
| Weight | 18kg (40lb) |
| Safety | complies with BS EN 61010 |
| EMC | complies with BS EN 61326 |
| Line Voltage | 85V to 264V 47-63Hz |
| Power | 1000VA Maximum |
Cell connection cable set for 1470E
8 channel cable set included (1 metre length)
14703A Option Specification
| Temperature measurement | |
| Temperature inputs | 8 (one per main channel) |
| Thermocouple types | E, J, K, T |
| Temperature accuracy | ±1ºC (plus thermocouple errors) |
|
Min (ºC) |
Max (ºC) |
Resolution (ºC) |
|
|
Type E |
-200 |
1000 |
0.0625 |
|
Type J |
-210 |
1200 |
0.0625 |
|
Type K |
-200 |
1372 |
0.0625 |
|
Type T |
-200 |
400 |
0.0625 |
The 14703A option provides:
- Temperature safety limits
- Temperature measurement with plots vs time
- Temperature step termination limits
Thermocouple Interface Unit included – for cold junction compensation (with 1 metre connection cable to 1470).
Thermocouples must be chosen to suit temperature range requirements and are therefore not supplied with this option.
| Control Outputs | |
| Control outputs | 24 (three per main channel) |
| Switch type | Opto-isolated solid-state switches (similar to relays) |
| Connections | 2 per switch |
| Maximum voltage | 50V |
| Maximum current | 100mA |
Control outputs can be automatically switched on/off at each step in the experiment to control external devices (relays, lamps. heaters, gas values, power boosters etc.).
Supplied with a D-type connector for customers to make up their own connection leads.
14702A Option Specification*
Auxiliary Voltage Channels (similar to RE1, RE2)
| Connections | Driven shields for wide bandwidth |
| Maximum voltage | +10V / -3V |
| Voltage ranges | Auto-range 10V, 1V, 100mV |
| Accuracy | ±0.1% of range |
| Voltage resolution | 3µV |
| ADC | 16 bit 10,000 samples / sec |
| Input impedance | >10Gohm |
| DC measurements | synchronized to assigned main channel |
Cell connection cable set for 14702A
8 channel cable set inclused (1metre length)
* IMPORTANT NOTE: Option 14702A requires 14703A to be fitted.
145x Frequency Response Analyzer Specification
| Chassis | 1400A – 8 slot chassis |
| PC communications | Ethernet 10 / 100BaseT |
| Number of FRAs per chassis | Up to 8 independent floating FRAs |
| Measurement connections | differential voltage generator and analyzer connections to 1470E via supplied cable |
| Measurement speed | >30 impedance results / second or 1 measurement per waveform cycle, whichever is slower |
| Generator | |
| Maximum DAC sample rate | 40MHz (40x over-sampled) |
| Frequency range 1455 1451 |
10µHz to 1MHz 10µHz to 100kHz |
| Frequency resolution | 1 in 65,000,000 |
| Frequency error | ±100ppm |
| Generator amplitude | 50µV to 3Vrms |
| Output | Short circuit protected |
| Output impedance | 50 ohms |
| Output waveforms | Single sine, multi-sine |
| Single sine (PC frequency selection) |
Linear / logarithmic sweep |
| Multi-sine No. of frequencies Frequency Frequency selection |
up to 3 decades per measurement, >3 decades by sequential measurements |
| Analyzers | |
| Maximum ADC sample rate | 40MHz (40x over-sampled) |
| Frequency range 1455 1451 |
10µHz to 1MHz 10µHz to 100kHz |
| Accuracy | ±0.1%, ±0.1º (input X / Y) |
| Analyzer modes | Single-sine or FFT / harmonic analysis (all modes available throughout the entire frequency range) |
| Voltage ranges | Auto-range or manually selected 3V, 300mV, 30mV (rms levels) |
| Maximum voltage resolution | 1µV |
| Phase resolution | 0.01º |
| Integration time | 10msec to 105 seconds 1 cycle to 106 cycles |
| Auto-integration | long, short or off |
| DC bias rejection | Automatic |
| Anti-alias filters (all channels) | cut-off > 1MHz |
| Digital filtering | automatic |
| Auxiliary Voltage Analyzers – for the impedance analysis of cell anode / cathode (Requires 14702A/14703A options fitted to 1470E) |
|
| Connections | Differential voltage (via 1470E) |
| Number of auxiliary inputs |
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