Starting from the basic furnace design; the ECS 4010 has two, large
capacity (up to a 26 mm OD reactor) furnaces. Optional fittings
let you quickly and easily switch between combustion/reduction reactors of different
diameters. You can work with reactors from 10,5 mm to 26 mm OD.
The furnaces are mounted in a specially designed SS enclosure with an extremely
efficient insulating material. This keeps the entire cabinet “cool to the touch”
and allows the furnaces to heat from ambient to operating temperature in 1.5 hours.
The electronics and power supplies are completely isolated from the furnace compartment
and have their own separate cooling fan. The ECS monitors, and can display, the
temperatures of the power supply, and electronics. It will also display the input
line voltage supply.
The first module is the combustion system, the second
is the detector system, and the third is the data
handling system. When the three systems are combined the user can choose the required
The first module consists of sampling, combustion and pneumatics.
The autosamplers available are a sealed, “Zero Blank” sampler, and an open carousel
sampler, where samples can be added continuously. The movement of the “Zero Blank”
autosampler is controlled by a microstepping motor. You can choose either a 32 or
50 position carousel through the instrument software, and since it is completely
sealed to atmosphere there is no contamination of the samples from nitrogen or oxygen.
This is especially useful for stable isotope analysis. The second choice of sampler
has carousels which are open to the atmosphere, but samples can be added continuously
and the number of sample positions is 147.
The ECS 4010 is equipped with two furnaces. Temperature control of the combustion
furnace is up to 1100 °C, and the reduction furnace 800 °C. The furnace dimensions
and special fittings allows you to use a wide variety of reactors to tailor the
analyzer to your laboratory needs (small and large samples, CHNSO analysis, and
N/Protein). The connection fittings for the quartz reactors make it fast and easy
to replace the inserts in the combustion reactors (removal of ash and residue),
for longer tube and catalyst life. The unique pneumatic system can be switched between
three operating modes; Micro, Semi-Micro and Macro. By selecting a mode you choose
the volume of oxygen for sample combustion. The gases (helium, oxygen and servo)
are controlled by reliable SS diaphragm regulators for accurate flow control. Servo
gas control is provided for use with our pneumatically actuated autosampler. A separate
purge regulator is provided for flexibility in purge gas flow and volume.
The second module is the detector system for measuring the combustion (or pyrolysis) products. These combustion gases can
be separated by gas chromatography for CHNSO analysis, or sent to a mass spectrometer
for isotopic analysis. For the gas chromatographic technique a high stability oven,
with temperature control from 30-110 °C, and a wide range of GC column lengths are
available. The TCD (thermal conductivity detector) has been specially designed for
this application, special features include; preheating of combustion gases before
entering the detector to stabilize gas temperature, and a twin encapsulated filament
which requires no reference gas flow.The advantages of the this are; simplicity
of the combustion/detector system (low maintenance, minimum down time), efficiency
of the combustion, and no splitting or dilution of the combustion gases, all combustion
products are measured.
The third module is EAS32, our WindowsTM based software package, for instrument control, data acquisition
and report generation. A multichannel 32 bit A/D interface connects the ECS to a
PC for data acquisition. Sample information is entered, the software collects raw
data from the TCD, creates the calibration, and generates reports. Data can be easily
exported to EXCELTM in ASCII format for postrun calculations or exporting to LIMS.
A reprocessing software option is available for setting up methods and transferring
data from a remote computer, or working with data out of the laboratory. Interface
boards can be ordered for 1, 2 or 4 channels.