Model CHI800C Series Electrochemical Detector                        <<<Home

The Model 800C series is designed for electrochemical detection. This instrument can be used for monitoring the current passing through a flow cell in liquid chromatography/electrochemistry and in-flow injection analysis, as well as other electroanalytical applications. Each instrument contains a digital function generator, a data acquisition system, and a potentiostat / bipotentiostat / Galvanostat. The potential control range is 10 V and the current range is 10 mA. These instruments are capable of measuring currents down to picoamperes. This series is designed for analytical purposes that require high sensitivity and low noise levels. It has a maximum sampling rate of 1M Hz at 16-bit. The circuitry has very low electrical noise. The instrument allows an external input signal (such as spectroscopy signals) to be recorded simultaneously with electrochemical data. When it is used for amperometric detection, three decades of current scales are plotted during the experiment to display signals of various magnitudes clearly. This model has superior ease of use compared with analog instruments, as well as data storage and analysis capabilities, without the need for recorder/baseline adjustments. It also provides a much larger current dynamic range, so that separate runs for large and weak signals can be avoided.

The Model 80C is for single channel measurements, and the Model 82C contains a bipotentiostat and is for dual channel measurements. As a bipotentiostat, it is well suited to rotating ring-disk electrodes applications. It can also be used for other applications where dual channel measurements are essential. Dual channel measurements are available for CV, LSV, CA, DPV, NPV, SWV, and amperometric i-t curves. The 2nd channel can be controlled at a independent constant potential, to scan or step at the same potential as the first channel, and to CV scan with a constant potential difference with the first channel.

The model 800C series is our upgrade to the model 800/800A/800B series. The instrument utilizes FLASH memory, allowing instrument updates to be distributed by e-mail instead of the shipment of an EPROM chip.

The 800C 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 800C series also has a true integrator for chronocoulometry.

We provide several different models in the 800C series. The following table compares the different models. Other than what is listed, the specifications and features of these models are identical. Models 800C/802C and 810C/812C are mainly for flow cell detection. Models 820C/822C cannot be used for flow cell detection, but are intended for voltammetry applications. Models 830C/832C are comprehensive electrochemical analyzers that can be used for electrochemical detection, voltammetry, and other applications. Models 840C/842C and 850C/852C are more advanced models with a galvanostat.

 

                Real time data display for flow cell detection.

 

Specifications

 

 

Potentiostat

Bipotentiostat

Galvanostat (840C/842C/850C/852C)

Potential range:  10 V

Compliance voltage:  12 V

Current range: 0 to 0.01 A

3- or 4-electrode configuration

Input impedance of reference electrode:  1012 ohm

Sensitivity scale:  110-12 - 0.001 A/V in 10 ranges

Input bias current:  < 5 pA

Current measurement resolution:  < 0.01 pA

Fast data acquisition: 16 bit @ 1M Hz

External voltage signal recording channel

External potential input

Automatic and manual iR compensation

Potential and current analog output

CV and LSV scan rate:  110-6 to 500 V/s

 

CC and CA pulse width:  0.0001 to 1000 sec

True integrator for CC

DPV and NPV pulse width: 0.001 to 10 sec

SWV frequency:  1 to 100 kHz

ACV frequency:  0.1 to 10 kHz

SHACV frequency:  0.1 to 5 kHz

Dual channel measurements for CV, LSV, CA, DPV, NPV, SWV, i-t

Cell control: purge, stir, knock

Automatic potential and current zeroing

Current low-pass filters, covering 8-decade frequency range, Automatic and manual setting

RDE control output:  0-10V (corresponding to 0-10000rpm)

Flash memory for quick software update

Serial port or USB port selectable for data communication

Maximum data length:  128K - 8192K selectable

Dimension:  12.5(W) 11(D) 4.75(H)

Weight:  15 Lb.                                                                                                                                                                                                                             

 

Differences Between 800C Series Models

 

Functions

800C/802C

810C/812C

820C/822C

830C/832C

840C/842C

850C/852C

Cyclic Voltammetry (CV)*

l

l

l

l

l

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Linear Sweep Voltammetry (LSV) &,*

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l

l

l

l

l

Staircase Voltammetry (SCV) #,&,*

 

 

 

 

 

l

Tafel Plot (TAFEL)

 

 

 

 

 

l

Chronoamperometry (CA)*

 

 

 

l

l

l

Chronocoulometry (CC)

 

 

 

l

l

l

Differential Pulse Voltammetry (DPV) #,&,*

 

 

l

l

l

l

Normal Pulse Voltammetry (NPV) #,&,*

 

 

l

l

l

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Differential Normal Pulse Voltammetry (DPNV)#,&

 

 

 

 

 

l

Square Wave Voltammetry (SWV) &,*

 

 

l

l

l

l

AC Voltammetry (ACV) #,&,$

 

 

 

 

 

l

2nd Harmonic AC Voltammetry (SHACV) #,&,$

 

 

 

 

 

l

Amperometric i-t Curve (i-t)*

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l

 

l

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l

Differential Pulse Amperometry (DPA)

 

l

 

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Double Differential Pulse Amperometry (DDPA)

 

l

 

l

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Triple Pulse Amperometry (TPA)

 

l

 

l

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Integrated Pulse Amperometric Detection (IPAD)

 

 

 

 

 

l

Bulk Electrolysis with Coulometry (BE)

 

 

l

l

l

l

Hydrodynamic Modulation Voltammetry (HMV)

 

 

 

 

 

l

Sweep-Step Functions (SSF)

 

 

 

 

l

l

Multi-Potential Steps (STEP)

 

 

 

 

l

l

Chronopotentiometry (CP)

 

 

 

 

l

l

Chronopotentiometry with Current Ramp (CPCR)

 

 

 

 

l

l

Multi-Current Steps (ISTEP)

 

 

 

 

l

l

Potentiometric Stripping Analysis (PSA)

 

 

 

l

l

l

Electrochemical Noise Measurement (ECN)

 

 

 

 

 

l

Open Circuit Potential - Time

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l

l

l

l

l

 

 

 

 

 

 

 

Galvanostat

 

 

 

 

l

l

RDE control (0-10V output)

 

 

 

 

l

l

Full version of CV simulator

 

 

 

l

l

l

Limited version of  CV simulator

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l

l

 

 

 

iR Compensation

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l

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External Potential Input

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Auxiliary Signal Measurement Channel

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#:  Corresponding polarographic mode can be performed.

&: Corresponding stripping mode can be performed.

*:  Second channel (bipotentiostat mode) can be performed.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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