CHAMBER STRUCTURE
|
MATERIAL
|
10 mm acrylic plates |
Glass desiccator |
Chamber made with plywood plate, expanding liquid polyurethane foam and stainless steel plate |
Stainless steel sheets and polycarbonate sheet |
DIMENSIONS (LENGTH × DEPTH × HEIGHT)
|
100 cm × 60 cm × 65 cm |
No information |
100 cm × 60 cm × 85 cm |
60 cm × 45 cm × 56 cm |
VENTILATION
|
Did not use ventilation |
12 Volt Fan |
Two computer cooler fans |
Two cooler-type fans installed on the sides, one on each level |
INPUT AND OUTPUT OF CO
2
AND AIR
|
Only two valves located in the lower region of the chamber for CO2 and air inlet and outlet |
Entry and exit of CO2 and events from the top of the desiccator |
Four gas inlet and outlet devices (CO2 and air) – solenoid valve for CO2 inlet control |
Two valves in the lower region for CO2 and air inlet and outlet and one valve in the lower region for air outlet |
CHAMBER CONFIGURATION
|
CONCENTRATION OF CO
2
|
5% – controlled by the proportion between CO2 and air flow (open circuit and continuous supply) |
The CO2 flow comes from a cylinder that comes into contact with the air inside the desiccator, in order to obtain the intended concentrations for the test to be developed. |
0% to 100% – controlled by the proportion between CO2 and air flow (open circuit and continuous supply) |
0% to 100% – controlled by the proportion between CO2 and air flow (open circuit and continuous supply) |
TEMPERATURE
|
Uncontrolled, recorded using a thermo-hygrometer |
Controlled and recorded through a thermo-hygrometer |
Not controlled, just registered |
Not controlled, just registered |
HUMIDITY
|
Uncontrolled, recorded using a thermo-hygrometer |
Controlled with salts and registered |
Not controlled, just registered |
Not controlled, just registered |
PRESSURE
|
Atmospheric pressure controlled with a Bourbon pressure gauge |
Atmospheric pressure controlled with a Bourbon pressure gauge |
Atmospheric pressure controlled with a Bourbon pressure gauge |
Atmospheric pressure controlled with a Bourbon pressure gauge |
SENSORS INCLUDED IN THE TEST
|
Temperature and humidity, but it was not informed if there was a CO2 sensor |
Temperature and humidity and CO2 sensor |
Temperature and humidity and CO2 sensor |
Temperature, humidity and oxygen meter |
AUTOMATION
|
No information |
Software DAS 100® and GasLab |
Arduino e software GasLab |
No information |
AIRTIGHT
|
The seal is made like a chemical chapel |
No information |
Silicone rubber seal around the perimeter of the door and self-adjusting lock which provides adequate pressure to the rubber |
Stainless steel weld and door with hermetic closure and butterfly type nuts and spongy fabric |