Both are nearly drift-free (less than 1% per week of sensor range) and maintenance-free. In the economical high-speed Multiplex mode where several cages share a sensor pair for O2 and CO2, we use a combination of a new (MOPO) magneto-optical paramagnetic oxygen sensor with a T90 of 1.3 seconds and a new (NDIR) optimized optical near-infrared CO2 photometer detector with a T90 of 2.5 seconds. Phenomaster offers several versions of gas sensor configurations that differ in time resolution and speed of measurement. And, in combination with the new optional InfraMot module can be extended to include continuous movement monitoring. This allows for accurate animal welfare monitoring and future refinement in co-housed animal studies and moving to a “direct calorimetry” application. The optional new ClimateBoard module adds continuous temperature and humidity environment monitoring to the home cage. Specialized isotope sensors such as for 13C can be used for substrate utilization (fat vs. The TSE Systems Indirect Gas Calorimetry module measures the animal’s oxygen consumption and carbon dioxide production to calculate key metabolic parameters, including the respiratory exchange rate (RER), and energy expenditure (EE). Gas analyzer expandable with p, Cp and VOC sensors.Elimination of variable influence of water by a first pass physical Peltier-based gas drying unit.Auto-calibration ensures consistent sensor accuracy prior to experiment.Optional high-speed gas sensors for accelerated multiplexed measurement.PULL and PUSH mode (for conventional or hypoxia/isocage studies).

Indirect calorimetry machine