Fluke 729 User Manual page 11

• Pressure sensors can be damaged and/or
personnel injury can occur due to
improper application of pressure. The
Product shows "OL" when the pressure
exceeds 110 % of the nominal range of the
sensor. When "OL" is shown on any
pressure, the pressure should be reduced
Automatic Pressure Calibrator
or vented immediately to prevent Product
damage or possible personnel injury. Push
 to zero the pressure sensor when
vented to atmospheric pressure.
• Do not point the vent port toward the
operator during venting.
Safety
5