What Are Vacuum Controllers?
Vacuum controllers are control devices designed to maintain a constant level of vacuum in a measurement environment.
They consist of a sensor for measuring the vacuum level, a solenoid valve for control, and valves for connecting to the measurement environment and the vacuum pump.
By integrating all these functions into a single unit, vacuum controllers are easy to maintain, including monitoring the vacuum level.
Applications of Vacuum Controllers
Vacuum controllers are used in environments where a constant vacuum is required for various purposes:
- Vacuum control in working processes of concentrators and distillation equipment
- Environmental measurements in clean rooms, laboratories, etc.
- Other experimental processes in laboratories, research facilities, etc.
- Vacuum control during industrial production
They are used for measuring and controlling the degree of vacuum in closed containers as well as for measuring the pressure of an entire room.
Additionally, using a chemical-resistant sensor (e.g., made of ceramic), pressure other than atmospheric can also be measured and controlled.
Principles of Vacuum Controllers
Vacuum controllers utilize pressure sensors to measure absolute pressure and employ solenoid valves for controlling the vacuum line and atmospheric release to maintain a constant vacuum.
These controllers integrate the sensor, solenoid valve, and valve into a single unit, eliminating the need for a separate control device.
The accuracy of the sensor is crucial since the value used for control is measured by the sensor. Regular inspection and replacement of sensors when necessary are essential maintenance tasks.
Some manufacturers offer the option to replace only the sensor. Sensors are made of materials such as ceramic or silicon semiconductor for different applications, including large-capacity vacuum vessels and corrosive gases.
Many vacuum controllers come equipped with mounting clamps on the back, making it easy to secure them to existing structures. Some feature mechanisms to prevent the boiling of solvents collected during the control process and are made of materials with excellent solvent resistance.
Furthermore, certain products are capable of operating during power outages.