Model 800D Series Electrochemical Detector
The Model 800D series is designed for electrochemical detection; it can be used for monitoring the current
passing through a flow cell in liquid chromatography/electrochemistry or in-flow injection analysis, as well as other
electroanalytical applications. The system contains a digital function generator, a data acquisition system, and a
potentiostat / bipotentiostat / galvanostat. The potential control range is ±10 V, the current range is ±10 mA, and the
maximum sampling rate is 1 MHz at 16-bit resolution. The instrument is capable of measuring current down to
picoamperes. This series is designed for analytical use that requires high sensitivity and low noise levels, and its
circuitry has very low electrical noise. The instrument allows an external input signal (such as spectroscopic) to be
recorded simultaneously with electrochemical measurements. When used for amperometric detection, three decades
of current scales are plotted during the experiment to display signals of various magnitudes clearly. Compared with
analog instruments, this instrument is much easier to use and also includes standard digital data storage and analysis
capabilities, without the need for recorder or 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 8×0D performs single channel measurements, while the Model 8×2D contains a bipotentiostat
for dual-channel measurements, such as rotating ring-disk electrode applications. Dual channel measurements are
available for CV, LSV, CA, DPV, NPV, SWV, and amperometric i-t techniques. The 2nd channel can be controlled
at an independent constant potential, to scan or step at the same potential as the first channel, or to CV scan at a
constant potential difference with the first channel.
The model 800D series is an upgrade to our model 800/800A/800B/800C series. The instrument utilizes
flash memory, allowing instrument updates to be distributed electronically instead of the inconvenient shipment and
installation of an EPROM chip.
The 800D series has a USB port (default) and a serial port for data communication with the PC. You can
select either USB or serial port (but not both) by changing the switch setting on the rear panel of the instrument.
The 800D series also has a true integrator for chronocoulometry.
Several different models are available in the 800D series. The following table compares the different
models. Other than what is listed, the specifications and features of these models are identical. Models 800D/802D
and 810D/812D are mainly for flow cell detection. Models 820D/822D are intended for voltammetry applications
and cannot be used for flow cell detection. Models 830D/832D are comprehensive electrochemical analyzers that
can be used for electrochemical detection, voltammetry, and other applications. Models 840D/842D and 850D/852D
are more advanced models with a galvanostat. Models 850D/852D also include AC voltammetry capabilities.

Specifications

Differences of 800D Series Models

#:  Corresponding polarographic mode can be performed.

&:  Corresponding stripping mode can be performed.

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