The Model 1200A series is a computerized hand-held potentiostat/bipotentiostat. The instrument consists of a digital function generator, a data acquisition system, and a potentiostat/bipotentiostat. The potential range is ± 2.4 V. The current range is ± 2 mA. This series is capable of measuring current down to 100 pA. The steady state current of a 10 mm disk electrode can be readily measured. The size of the instrument is 7” (L) ´ 4.5” (W) ´ 1” (H). The instrument is powered by the USB port of a PC computer, without need of an external wall transformer or batteries. It is therefore more compact and convenient. The instrument can be used for electroanalysis and sensor studies. Due to its small size, light weight, and low cost, it is particularly useful for field applications and teaching laboratories.
Compared with the previous Model 1200 series, the new design allow ±7.5 V compliance voltage, which ensures the working potential range ±2.4 V for most of the electrochemical systems. It also uses dual 16-bit DAC and 16-bit ADC for improved resolution and accuracy.
The instrument provides many powerful functions, such as file handling, experimental control, graphics, data analysis, and digital simulation. Some of the unique features include macro command, working electrode conditioning, color, legend and font selection, data interpolation, visual baseline correction, data point removal, visual data point modification, signal averaging, Fourier spectrum, and equations relating to electrochemical techniques.
The CHI1200A series provides various instrument models to meet different applications and budget., and is available in potentiostat (CHI1200A, 1210A, 1220A, and 1230A) and bipotentiostat versions (CHI1202A, 1212A, 1222A, and 1232A).
Specifications
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Potentiostat / bipotentiostat Maximum potential range: ± 2.4 V Compliance voltage: ± 7.5 V Current range: ± 2 mA Reference electrode input impedance: 1´1012 ohm Sensitivity scale: 1x10-9 - 0.001 A/V in 7 ranges Input bias current: < 100 pA Current measurement resolution: < 5 pA Data acquisition: 16 bit @ 10 kHz |
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CV and LSV scan rate: 0.000001 to 10 V/s CA and CC pulse width: 0.001 to 1000 s CA and CC Steps: 1 - 320 DPV and NPV pulse width: 0.001 to 10 s SWV frequency: 1 to 5000 Hz Low pass filter for current measurements Maximum data length: 128K-4096K selectable Power: UPS port of a PC Chassis dimension: 7” (W) ´ 4.5” (D) ´ 1” (H) |
Differences of 1200A Series Models
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Functions |
1200A /1202A |
1205A /1206A |
1207A /1208A |
1210A /1212A |
1220A /1222A |
1230A /1232A |
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Cyclic Voltammetry (CV)* |
l |
l |
l |
l |
l |
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Linear Sweep Voltammetry (LSV) &,* |
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Chronoamperometry (CA)* |
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Chronocoulometry (CC) |
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Differential Pulse Voltammetry (DPV) &,* |
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l |
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Normal Pulse Voltammetry (NPV) &,* |
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Differential Normal Pulse Voltammetry (DPNV) &,* |
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Square Wave Voltammetry (SWV) &,* |
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Amperometric i-t Curve (i-t)* |
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Differential Pulse Amperometry (DPA) |
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Double Differential Pulse Amperometry (DDPA) |
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Triple Pulse Amperometry (TPA) |
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Open Circuit Potential - Time (OCPT) |
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Full version of CV simulator |
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Limited version of CV simulator |
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&: Corresponding stripping mode can be performed.
*: Second channel (bipotentiostat mode) can be performed.
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