WA 131 M

Detail Innovative manual retractable fitting with safe-to-operate rotary drive
Facts and Features compact, smooth, and dirt-resistant design
  minimum maintenance costs and maximum flexibility thanks to completely modular design
  very simple replacement of seals due to divided calibration/cleaning chamber
  increased service life and reduced seal wear
  ATEX approval II 1GD c II for the complete fitting
  cost reduction by simple installation, operation, and maintenance
  very high availability
  protective rinsing of the seals for a long service life
  SensoLock for high safety of operation
  integrated limit switches
  fast and uncomplicated replacement of calibration chamber and immersion tube