CO2 incubator concentration measurement

CO2 incubator CO2 gas concentration is specifically how to control the following will be explained to you:

CO2 incubator CO2 concentration control and CO2 temperature control is very much the same:

1. CO2 concentration homogeneity and temperature homogeneity.

2. Concentration control of the automatic calibration system and temperature control of the temperature control system.

3. Concentration control is the difference between two sensors (infrared and thermal conductivity), while temperature control is the difference between temperature control methods (water jacket and gas jacket).

CO2 incubator CO2 gas concentration control: 

CO2 incubator gas by a high concentration of CO2 cylinders, gas pumps, pressure regulator valve, needle valve, solenoid valve, flow meter and storage cylinders and other components. (High concentration of CO2 cylinder prepared by the user). When the input of a certain pressure of high concentration of CO2 gas, through the regulator valve, needle valve and solenoid valve flow, time control, to ensure that a certain amount of CO2 gas into the studio, to achieve automatic control of the CO2 concentration value of the working chamber. The value is displayed through the display circuit at the same time, which is easy to observe and understand. In order to facilitate the user in the use of concentration monitoring and sampling, in the back of the CO2 box is equipped with sampling, monitoring port. Due to the adoption of fast and slow double inflation method, the CO2 concentration in the working chamber can be restored quickly without overshooting after the CO2 tank is opened and closed. During the working process of the CO2 tank, the gas storage cylinder is used to replenish the gas inside the working chamber to maintain a stable CO2 concentration value.

How the CO2 concentration inside the CO2 incubator should be measured Abstract: The CO2 incubator is designed to simulate a cell/tissue growth environment similar to that of a living organism within the incubator chamber, which requires a stable temperature (37°C), a stable CO2 level (5%), a constant acidity and alkalinity (pH: 7.2-7.4), and a high relative saturated humidity (95%), in order to perform in vitro cell/tissue growth. , a device to culture cells/tissues in vitro.

CO2 Incubator Infrared Sensor It is an optical sensor to check and measure the CO2 level.

The IR system consists of an infrared emitter and a sensor, and when the CO2 in the chamber draws on the local infrared rays emitted by the emitter, the sensor can test and measure the amount of infrared reduction, and the amount of infrared rays drawn on coincidentally corresponds to the level of CO2 in the chamber, and thus the liquid concentration of CO2 in the chamber can be derived.

Because the IR system is through the infrared loss to confirm the liquid concentration of CO2 in the box, and the particles in the box can reflect or partially borrow infrared, to get the IR system to the particles in the box of a number of more sensitive, IR sensors are used in the air inlet with a high-efficiency air over the shower of the incubator is more appropriate.

CO2 incubator thermal conductivity sensor to monitor the CO2 liquid concentration of the office principle is based on the thermal conductivity of the air inside the chamber of the serial survey, the low thermal conductivity of the input CO2 gas will make the thermal conductivity of the air inside the chamber of the change in the same way, so that it will be born with the concentration of CO2 liquid directly proportional to the electrical signal.

One of the shortcomings of the TC choke system is that changes in temperature and relative humidity inside the chamber can affect the sensor's accuracy.

When the door of the chamber is opened many times, not only the CO2 liquid concentration, temperature and relative humidity will also be very large fluctuations, thus affecting the precision of the TC sensor.