chromARGON

Principle:

The chromARGON is an automatic, industrial or laboratory gas analyzer. The temperature setting is isothermal. The sample comes through the sampling loop. Then the sample is injected into an analytical column (with an automatic valve) for separation. Different column can be used (e.g. packed column). After separation, the amount of each compound is measured using an universal detector, the catharometer.

An oven is installed in order to allow the regeneration (to avoid contamination) of the column at 250°C.

A pressure safety is inserted just after the detector in order to protect its wires.

The catharometer detector:

The Thermal Conductivity Detector (TCD) can detect all kind of compounds. The Wheatstone bridge is made of 4 Tungsten-Rhenium wires. It works with constant current or constant voltage. With the detector, a thermal conductivity difference between the reference cell (carrier gas) and the measure cell (outlet of the column) is measured. This value is transferred to an electrometer and the generated signal is proportional to the compounds concentration in the sample. The signal is then transferred to the CPU board and the microprocessor processes the data (integration, mass or concentration calcul, peaks identification…).

The different parameters (data, chromatogram, integration report…) are transferred via a RS-232 port and they are visualised and reprocessed with our VISTACHROM software.

VISTACHROM® software:

The software developed by Chromatotec® allows:

• Remote control
• Full traceability with on board archiving of results
• Program to stop the detector filament (to protect them) inside a sequence (e.g. column cleaning)
• Programation and control of threshold alarms
• Ponctual (laboratory) or continuous measurement
• Data export by MODBUS / JBUS / MGS1 / 4-20mA / 0-10V

Options:

• Gas cleaner
• Modul 4 x analog output 4-20 mA or 0-10 V.
• Alarms module
• Automatic results validation
• 24 V power supply
• Explosion proof Exp box – Ex Specification Class1 Div2, groupC&D
• Hydrogen and Nitrogen generator
• Multiple stream selector (2 to 10 streams with one analyzer)
• Carrier gas purificator
• Sampling pump in 24V DC or airmoPUMP (XXX901 or XXX915)
• Pressure and temperature measure
• Mass Flow Controller (MFC, in order to improve dilution precision and so calibration quality)