Lab Degassing Unit for preparation of DGA standards

Tuesday July 13th, 2021

The Lab Degassing Unit is a stainless steel vessel that allows to degas up to 5 liters of fluid at a pressure of around 10 mbar by a vacuum pump (the unit maintains vacuum conditions for several hours after the degassing process).
Through dedicated valves, vacuum can be broken blowing an inert gas in; subsequently the treated liquid sample can be directly sampled from the bottom by a syringe.

Due to its steel construction, all operations are performed safely, without any risk for the operators deriving from the breakage of a typical glass vessels.
Process parameters (temperature and vacuum level) can be continuously monitored by means of specific sensors (optional).
This apparatus is meant to optimize the degassing process during the preparation of gas in oil standards for Dissolved Gas Analysis (DGA) according to IEC 60567 (Ed 4.0 2011-10) – “Oil-filled electrical equipment – Sampling of gases and analysis of free and dissolved gases- Guidance.”
The Lab Degassing Unit is also suitable to perform other degassing processes on different fluids (e.g. R&D applications).

Size

150 x 260 x 80 mm

Weight

6,5 kg

Pump (included)

The Lab Degassing Unit is equipped with a vacuum pump to minimize the evolution of vapors from the treated fluids. The pump is made by 2 principal components:

  • a 2-stadium rotary pump
  • a corrosion resistant chemical pump with diaphragm.

The characteristics of the pump guarantee a vacuum level of 10 mbar.

Optional accessories

Sensors

For process monitoring the degassing chamber can be equipped with:

  • Oil temperature probe (Pt100)
  • Vacuum sensor with signal transmission (4-20 mA or 0-10 V)
  • Visual vacuum level (displayed on the top of the chamber).

Process data acquisition module

The Degassing Unit can be equipped with an Data Acquisition (DAQ) module and its companion software, which can be installed on PC (not included). It is used to record and show process conditions in real time and for any subsequent analysis.

Magnetic stirrer heater

The Degassing Unit can be provided with a magnetic stirrer heater. This apparatus allows to keep the fluid stirred in the chamber and to heat it at a constant temperature, if necessary. Temperature can be monitored and controlled by a probe inserted in the vacuumchamber.

  • LED display for temperature and stirring rate
  • Configurable probe temperature with display
  • Temperature range : ambient temperature – 280 °C
  • Stirring rate: 100-1500 rpm

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