CHI600C CH Instruments Electrochemical Analyzer

The CH Instruments CHI600C Series Electrochemical Analyzers/Workstations are designed for general purpose electrochemical measurements. The system contains a fast digital function generator, high speed data acquisition circuitry, potentiostat, and a galvanostat (manufactured only in select models). The potential control range is ±10 V and the current range is ±250 mA. The instrument is capable of measuring current down to tens of picoamperes. The steady state current of a 10 mm disk electrode can be readily measured without external adapters. With the CHI200 Picoamp Booster and Faraday Cage (fully automatic and compatible with the CHI600C series), currents down to 1 pA can be measured. These instruments are very fast. The function generator can update at a 5 MHz rate, and the maximum sampling rate is 1 MHz at 16-bit resolution. The instrument provides very wide dynamic range on experimental time scales. For instance, the scan rate in cyclic voltammetry can be up to 500 V/s with a 0.1 mV potential increment or 5000 V/s with a 1 mV potential increment. The potentiostat/galvanostat uses a 4-electrode configuration, allowing it to be used for liquid/liquid interface measurements and eliminating the effect of contacting resistance of connectors and relays for high current measurements. Multiple data acquisition systems allow an external input signal (such as spectroscopy signals to be recorded simultaneously with electrochemical data). The instrument will also automatically re-zero both potential and current, so that periodic recalibration of the instrument can be avoided.

The CHI600C series is the upgrade to our very popular 600B series. The analog-to-digital converter has been changed from 12-bit to 16-bit. The maximum sampling rate is 1 MHz. The instrument also now utilizes FLASH memory, allowing instrument updates to be distributed by e-mail instead of the shipment of an EPROM chip.

The CHI600C series has a serial port (default) and a USB for data communication with the PC. You can select either serial port or USB (but not both) by changing the jumper setting on the board.

The 600C series also includes a true integrator for chronocoulometry.

A 16-bit highly stable bias circuitry is used for current or potential bias. This allows wider dynamic range in ac measurements. It can also be used for re-zero the dc current output.