Vacuum system
LevelPressure
Overview
A vacuum system is used to perform dewatering on the high-speed paper machines. The required high vacuum is generated by a single or multi-stage centrifugal blower. The strength of the vacuum is regulated by the rotational speed of the electric drives. For this purpose, the vacuum must be continuously measured. It is also necessary to monitor the bearing lubrication system to ensure reliable operation of the vacuum blower itself. To achieve this, the pressure in the lubricating lines and the level in the lube oil supply tank need to be measured.
Operating Conditions
- Measuring Task
- Level and pressure measurement
- Measuring Point
- Vacuum system
- Medium
- Lubricating oil, air
- Measuring Range
- -0.75 … 0 bar
- Temperature
- +30 … +90 °C
- Pressure
- -0.75 … 0 bar
Challenges
- Permanent high vacuum, vibrations
Benefits
- Reliable: Reliable pressure measurement in the lubrication system, even with strong vibration
- Cost effective: Long-term stable vacuum measurement with oil-free ceramic measuring cell
- User friendly: Temperature information on air and lubricating oil also available for the control system
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