record (ai, "FHIPHOTONSTM:NI6009:MainChamber")
{
  field(EGU, "mbar")
}
record (ai, "FHIPHOTONSTM:NI6009:ForeVacuum")
{
  field(EGU, "mbar")
}
record (ai, "FHIPHOTONSTM:NI6009:PrepChamber")
{
  field(EGU, "mbar")
}