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Obtain real-time Oxygen Consumption (VO
2) and Respiratory Exchange Ratio (RER) measurements using the MP100/150 System with the GASSYS2 module and some air flow accessories.
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Ships with
AFT7
smooth bore tubing,
AFT11E
flexible coupler, and
AFT22
non-rebreathing T-valve. See
AFT Series
for other air flow and gas analysis accessories.
The GASSYS2 measures expired O
2 and CO
2 concentrations.
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When the subject
inspires, air will be drawn into the GASSYS2 through the
TSD117
air flow transducer. The TSD117 is placed on the inspiration side to eliminate any effects associated with expired air humidity.
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When the subject
expires, air will be directed to the GASSYS2 module. The GasSys2 is designed to work with saturated expired air.
The non-rebreathing "T" valve directs only expired air to the GASSYS2. Because only expired air is directed to the module, the system acts to average respiratory outflows. This averaging effect causes the CO
2 and O
2 concentrations to vary in accordance to the mean values resident in a few expired breaths.
Validation of the BIOPAC indirect calorimeter for determining resting energy expenditure in healthy free-living older people
K. Khalaj-Hedayati et al. /
Nutrition Research 29 (2009) 531–541
Chamber Options
Two chamber sizes are available for the GASSYS2. Each chamber assembly includes the chamber casing and rod. The chambers work exactly the same way and are interchangeable on the module base. Use the smaller chamber size for small children/medium sized animals.
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5-liter chamber: included in the GASSYS2-RA;
Order the chamber only as
RX-GASA
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1-liter chamber: included in the
GASSYS2-RB
;
Order the chamber only as
RX-GASB
Applications  Exercise Physiology Pulmonary Function
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| O2 sensor: |
Warm-up: 10 minutes
Response time 10-90%: 30 sec.
Accuracy: 1% FSR (full scale range)
Zirconia solid electrolyte with a 0.1-25% sensing range. It runs hot, which burns off humidity.
Expected O2 sensor lifespan (in years): [5,256/(number of hours used per year)]*5
- If used for 20 hours per week or 1,040 total hours in a year, then O2 sensor lifespan would be [5,256/1,040]* 5 = 25.27 years
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| CO2 sensor: |
Warm-up: 2 minutes
Response time 10-90%: 45 sec.
Accuracy: 3% FSR (full scale range)
Uses a humidity-repellant (hydrophobic) membrane and has a sensing range of 0-5%. It uses non-dispersive infrared diffusion with single-beam IR and a self-calibrating algorithm. It also runs hot, which burns off humidity. |
| Calibration: |
Sensors are factory calibrated prior to shipping. |
| Power: |
12 VDC @ 1 amp wall adapter. |
| Accessories: |
Ships with AFT7 smooth bore tubing, AFT11E flexible coupler, and AFT22 non-rebreathing T-valve; see AFT Series for additional accessories. |
| Chamber: |
5 liters |
AcqKnowledge - Scale Values:
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