Human energy metabolism research is one of the most important topics in human biology research. The research focus is on human response (adaptation) to different ecological environment conditions, including survival constraints and stresses, energy acquisition and distribution (for maintenance and productive consumption), and its significance for human well-being and health (including human survival and reproduction), such as energy metabolism research of different foods and eating patterns, energy metabolism response of different living conditions, including modern transportation such as railway and automobile environmental conditions, energy metabolism research of obesity and related metabolic diseases (such as cardiovascular diseases, diabetes, osteoporosis, some cancers, etc.).

The left side of the picture shows the new FMS portable host, the theoretical and technical manual for metabolic measurement is shown in the picture, and the right side of the picture shows the human energy metabolism plan

FMSThe portable human energy metabolism measurement system adopts the gold standard indirect calorimetry method, consisting of a host system, an airflow control monitoring system, and a respiratory mask (or helmet). Its main technical features are as follows:

1) Multi parameter high-end scientific research grade host system, including CO2 analyzer, O2 analyzer, water vapor analyzer, temperature monitoring, data acquisition system, gas sampling unit, and BaseLine/Chambers dual channel gas path switch, etc

2)The ultra large touch screen displays various parameters of the instrument in real-time, including oxygen, carbon dioxide, water vapor pressure, atmospheric pressure, relative humidity, analog input signals, storage size, sampling status, date and time series data, etc

3)8Channel analog signal input, compatible with other analyzers or sensors, 4-channel temperature input

4)The panel has an SD card slot with a maximum support capacity of 32GB, allowing for instant storage of data information without the need for a separate computer

5)Quick response, gas analysis response time less than 1 second, allowing for real-time reflection of instantaneous changes in breathing

6)Highly integrated and portable, it can be used for outdoor, in car, and laboratory research on human energy metabolism measurement; Can be used for measuring animal energy metabolism simultaneously (requires the selection of an animal respiratory metabolism measurement room)

7)Equipped with a wearable activity data collector, it automatically collects three-dimensional activity data, temperature (body surface temperature), humidity (body surface humidity), etc

8)Optional infrared thermal imaging unit for imaging measurement of surface and environmental temperature distribution, to study and analyze the relationship between surface heat dissipation temperature distribution and environmental temperature

9)Can be used in biomedical, translational medicine, clinical diagnostic measurement, exercise physiology, environmental physiology research, etc

Main technical indicators:

1.Sensor: O2 analyzer, fuel cell technology, service life of about 2 years, replaceable fuel cell; CO2 analyzer, colorless dispersion dual wavelength infrared gas analyzer; Water vapor analyzer, platinum electrode capacitive sensor

2.Measurement range: O2， 0 - 100%； Atmospheric pressure, 30-110 kPa; CO2， 0 –5%； Water vapor pressure, 0-100% RH (non condensing), temperature 0-100 ℃

3.Accuracy: O2： 0.1% of 2-100% reading; CO2： 1% of 0-5% reading; H2O: 0-95% RH reading of 1%, 95-100% better than 2%; Temperature 0.2 ℃

4.resolving power: O2: 0.001%； CO2: 0.0001%-0.01%； H2O: 0.001%RH

5.Signal drift: O2:<0.02% per hour at constant temperature; CO2: < 0.001% per hour; H2O:<0.01% RH per hour

6.Signal input: eight standard voltage bipolar analog inputs, four temperature inputs

7.Analog output: 8 custom outputs

8.Digital control output: 8TTL logic signal

9.Digital output: RS-232 to USB, Sablebus fast interface

10.Built in memory: SD memory card, up to 32GB

11.Storage time interval: 0.1 seconds to 1 hour, user-defined

12.Airflow rate: 10-1500mL/min

13.Flow control: Micro electronic thermal feedback system, airflow control is actually connected to the airflow pump and flow meter (microcomputer controlled) through a precision feedback loop system, while providing high-precision needle valves; Accuracy: 2% of the reading

14.Flow resolution: 0-99.9mL/min is 0.1mL/min; Above 100mL/min is 1mL/min

15.The standard range for atmospheric pressure measurement is set to 0-125kPa, and users can set it to 75-125kPa or 90-110kPa according to their needs. The accuracy is 1% and the resolution is 1Pa,

16. Touchscreen operation can display various parameters of the instrument in real time, including oxygen, carbon dioxide, water vapor pressure, atmospheric pressure, relative humidity, analog input signals, storage size, sampling status, date and time series, etc. Equipped with Windows version software, it can display and analyze data online.

17.Thermistor probe is used to measure the temperature inside the breathing room and the air temperature: measurement range -5-60 ℃, resolution 0.001 ℃, absolute accuracy 0.2 ℃, BNC connection, probe diameter 2.5mm;

18.Working temperature: 3-50 ℃, no condensation

19.Power supply: 12-15 VDC, with 220V AC adapter; Optional lithium battery power supply, convenient for field operation.

20.Size: 35cm × 30cm × 15cm

21.Weight: 4kg

22.Optional mobile or stationary measuring mask for free movement measurement or measurement in a stationary state (lying or sitting)

23.Wearable data collector: temperature measurement range -40 ° C-125 ° C, accuracy 0.2 ° C; Humidity measurement range 0-100%, accuracy ± 1.8%; Three dimensional acceleration sensor (activity monitoring) with a measurement range of ± 15g and an accuracy of ± 0.15g, equipped with an OLED color display screen to display measurement data and charts, and Bluetooth communication

Other instruments for measuring human energy metabolism: Human Energy Metabolism Laboratory

üModular structure, free combination, differential CO2, O2 and water vapor pressure measurement system

üInfrared thermal imaging monitoring system, capable of imaging and measuring the dynamic distribution of body surface temperature

üWearable 3D activity, surface temperature, and surface humidity data collection

üCustomers can customize a free activity energy metabolism cabin