Pressure Sensor Ventilation (Pgs100 Only) - ABB PGS100 Operating Instruction

20 P G S 1 0 0 A N D PA S 1 0 0 | P R E S S U R E T R A N S M I T T E R S | O I/ P G S/ PA S 1 0 0 - E N R E V. A
. . .6 Commissioning

Pressure sensor ventilation (PGS100 only)

Ventilation
port
Transmitter has a reference port vented to the atmosphere and
duly protected. Care must be taken to avoid obstruction of the
port (i.e. covered, dirty) as it can affect the measurement.