automatic control valve Applications

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Gas control equipment for Life Science

by QCAL Messtechnik GmbH     based in Oberostendorf, GERMANY

QCAL introduces CO2Control for incubators and test chambers. These gas dosing units can be adapted to nearly every incubator or test chamber. The user can set a CO2 concentration up to 30% vol. CO2. The CO2Control measures the actual concentration and adds CO2 from a CO2 gas container. The NDIR CO2-sensor has an excellent long-term stability, which provides years of stable CO2 measurement. Also the other parts as the sample gas pump, valve and fittings are designed for maintenance-free use over years. Humidity effects are compensated upto 95% rh at 37°C, also temperature effects are automatically corrected upto 50°C. The other way to control gas atmospheres in any life science equipment is to use gas mixing units GMS_2CH ( 2 channels ) or GMS_3CH ( 3 channels ) for N2, O2 and CO2. They can match flowrates up to 80 liters per minute with a concentration range up to 100 Vol% O2 and/or CO2.

Emissions testing for engines

by Testo Inc.     based in Sparta, NEW JERSEY (USA)

Rich-burn engine exhaust, when uncontrolled, can have wide concentration ranges and both CO and NOX can fluctuate significantly. The on-board CO dilution system will automatically set-up for optimum testing, perfect for a rich burn engine. Lean-burn engines have different exhaust characteristics, but NO2 can make up a significant portion of the total NOX measurement. The 350 measures both NO and NO2 for proper lean-burn engine set-up. Due to high concentration, replaceable interference filters keep the sensors stable and your readings accurate. High exhaust pressures and heavy particulate loading are easily controlled with the special pressure relief valve (standard) on the engine probe configuration.

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