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VO2 VCO2 Oxymax® EConomy

VO2 VCO2 Oxymax<sup>&reg;</sup> EConomy
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General Information

The Columbus Instruments Oxymax EConomy System is an indirect open circuit calorimeter designed to simultaneously measure metabolic performance of multiple subjects that have similar ventilation needs. The system monitors oxygen and carbon dioxide concentrations by volume at the inlet and outlet ports of a chamber, canopy, tent, or mask through which a known flow of air is being forcibly ventilated. The difference in gas concentrations along with flow information is employed to calculate oxygen consumption, carbon dioxide production, respiratory exchange ratio and heat. All data provided by the Oxymax EConomy is corrected to an STP of 0°C and 760 mmHg. The system presents data in normalized forms that are user-defined.

The Oxymax EConomy is configured for positive ventilation of multiple subjects. The total flow of a single source of air is accurately monitored before entering the equal flow distribution system. Within the equal flow distribution system is a manifold designed to distribute the incoming flow equally among all attached chambers. Up to 16 chambers are supported. A second flow meter within the instrument provides a secondary method of assuring that the total flow is properly distributed. The Oxymax EConomy can be supplied with positive ventilation systems that deliver 100 mL/Min to 10 LPM per subject. Consult Columbus Instruments with the specific details of your application.

The Oxymax EConomy is constructed with stable gas sensors that have been optimized for sensing concentrations near ambient conditions. A typical Oxymax EConomy measurement is accurately made from readings that differ by as little as 0.1% from inlet to outlet. The Oxymax EConomy employs methods and control systems that assure accurate and repeatable results under changing environmental conditions. The controlling software has been designed to provide ease of use with powerful abilities that enable the Oxymax EConomy to adapt to your specific calorimetric measurement needs. The Oxymax EConomy hardware allows connection to virtually any additional testing equipment and logs their measured values into the Oxymax EConomy data file.

Click here to obtain a copy [PDF] of the product brochure.

Equations for Energy Expenditure


OxyVal Oxymax Validation Unit


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Features / Specifications

Simple operation with Experiment Checklist documents proper set-up and execution
Auto-Tracking and Correction of errors caused by changes in the testing environment
Supports 2 to 32 subjects of similar size
Adaptable to a wide range of subject size and testing

Oxygen Sensor:
Electrochemical:
Range: 18.9% to 21.2% Resolution: 0.002% O2
Drift: less than 0.25% O2 / 24 Hours
Paramagnetic:
Range:0-100% Resolution: 0.002% of specified range
Drift: less than 0.06% of specified range per 24 Hours
Carbon Dioxide Sensor:
Range: 0%-0.8% Resolution: 0.002% CO2
Drift: (zero) less than 20 ppm CO2 / Hour
Drift: (span) less than 20 ppm CO2 / Hour


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Ordering Information

7670MR Oxymax EConomy System for 1 Mouse or Rat
7672MR Oxymax EConomy 2 Chamber System for Mice or Rats
7674MR Oxymax EConomy 4 Chamber System for Mice or Rats
7676MR Oxymax EConomy 6 Chamber System for Mice or Rats
7678MR Oxymax EConomy 8 Chamber System for Mice or Rats
7680MR Oxymax EConomy 10 Chamber System for Mice or Rats
7682MR Oxymax EConomy 12 Chamber System for Mice or Rats
7684MR Oxymax EConomy 16 Chamber System for Mice or Rats

Contact Columbus Instruments for Custom Configurations


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