Portable Gas
Chromatograph
Gas chromatograph is normally a
bench-top laboratory instrument for qualitative/quantitative analysis of chemicals in
food, pesticide and drug industries. To provide a field-based detection equipment for
monitoring and quantitating chemical warfare agents, a portable gas chromatograph has been
developed for field use. The equipment comprises an adsorbent-based input preconcentrator
and a wide-bore capillary column as GC separator kept in an oven, followed by a
photoionisation detector to provide electrical signal. The signal is received by a
microprocessor onboard a data acquisition and alarm system for identification of the
chemical present. The system gives alarm and provides the chromatogram on its inbuilt
printer.
Important Characteristics
| Sensitivities |
< 0.03 mg/M, ( H agents) |
|
< 0.01 mg/M (G agents) |
| Response time |
< 3 min |
| Power |
24V DC and AC mains |
| Output |
Alarm and plotter |
| Weight |
5 kg without batteries |
| Status |
Fitted in NBC reccee vehicle |
Features
| Carrier gas |
Air itself |
| Sensitivity |
An order of magnitude better than NATO standards |
| Alarm |
Visual display, both qualitative and quantitative |
The portable gas chromatograph can be
programmed for detection of other types of chemicals after modification. It does not use
any consumables other than batteries.
T/R
Module Technology \ CLMC (Vehicle) \
Portable Gas Chromatograph \ Threshold Detector Unit \ Mesoscale
Weather Forecast Model \ Naval Wargame
\ Rapid Prototyping Technology \ Conical Horn Array 8 x 1