VWR CO2 Incubator Basic - Sensor System

VWR CO2 Incubator Basic | 21
Description of the device |
Chapter 4
Sensor system
Figure 5 – Temperature sensor
The blower wheel and two sensor modules are integrated in the baseplate [1] of the measuring
cell:
 Sensor [2] for the measurement of the work space temperature and of the thermal protection
 CO
2
sensor [3] for the measurement of the CO
2
content in the work space atmosphere
The sensor for the measurement of the work space temperature as well as the CO
2
sensor form
part of the control system of the device. Their measured values are compared to the set nominal
values. Based upon this data, the control system controls heating and CO
2
supply.
The blower intermixes the supplied gases and ensure uniform temperature distribution within the
work space.
The thermal protection has been preprogrammed at the factory and cannot be changed. It protects
the stored cultures from overheating. If the temperature is exceeded by more than 1 °C, the
thermal protection responds and the work space temperature is automatically reduced to the set
nominal value so that the incubation process can be continued even in case of a failure. Any
response of the thermal protection will simultaneously trigger an audible and visual alarm.