Optical Cell Evaluation Kit
The new technology of mid-IR-LED's measuring gas concentration requires special drive and detector circuitry, fast A/D converters and micreoprocessor control to optimise for your application. We provide all of that in the OCEK. Simply select LED current, pulse width, number of pulses and duty cycle and you are starting to make measurements. Select Hi or Lo gain on the preamps or fit your own opamps into out preamp sockets to test your ideas. Multiple test points and link options allow you to select detector type, op-amp configuration and check, with an oscilloscope, all input and output signals, quickly and easily.
The evalution kit can evalute IR optical gas cells and will also operate with visible and UV optical cells.Alternatively, fast response black body sources can be controlled with this OCEK.
The OCEK consists of a pre-wired gas cell in a screened metal box, with evaluation circuitry and a RS232 interface. You need only provide a ±8 volt power supply and IBM compatible PC to get the system operating. Supplied with PC software which is easy to install and operate with drop down menus.
The RS232 output to the OCEK software, with drop down menus and mouse driven usage. Output is to printer, plotter or export. Easy user configuration of experiment parameters, file control and export, and can be used with general comms software.
The above table shows approximate capabilities of optical IR gas cells, using LMS IR-LED's.
The IR cell includes cell body with 5cm pathlength, gas cell optics, 1.8, 3.3, 3.4, 3.8, 4.2 or 4.7 micron LED, and photoconductive detectors: one for reference, one for gas detection.
LMS ±8VDC Power Supply Unit
Thermoelectric cooler controller
Gas sampling pump
Infrared LED's can be pulsed at high frequency for optimising signal-to-noise ratio and power consumption. Narrow bandwidth LED's eliminate the need for filters. Evaluation Kit accepts pyroelectric, photoconductive and photovoltaic detectors. Optional thermoelectric controller with PC control for easy evaluation of Peltier cooled emitters and detectors. Software includes experiment programming, graphics, customed linearisation.
Water vapor concentration at low temperature
Hydrocarbon concentration from 1000ppm to 100% methane
Carbon dioxide from 300ppm to 25%.
Two gas monitoring:
Carbon dioxide and methane at landfill sites
Nitrous oxide/ carbon dioxide monitoring in greenhouses and horticultural uses
Leak detection: petroleum and natural gas facilities
Combustion analysis for TOC etc
Alarm detection where interfaces with electrchemical cells invalidate their use.
This evaluation kit will operate with visible and UV optical cells.
For applications advice, or to place your order, please contact:
Laser Monitoring Systems