Fluke 719PRO User Manual page 13

Pressure sensors can be damaged
and/or personnel injury can occur due to
improper application of pressure.
Vacuum should not be applied to any
gauge pressure sensor. The Product
display shows "OL" when an
inappropriate pressure is applied. If "OL"
is shown on any pressure display, the
pressure should be reduced or vented
immediately to prevent Product damage
or possible personnel injury. "OL" is
shown when the pressure exceeds 110 %
of the nominal range of the sensor or
when a vacuum in excess of 2 PSI is
applied on gauge range sensors.
Push the ZERO button to zero the
pressure sensor when vented to
atmospheric pressure.
Pressure Calibrator
Remove the batteries if the Product is
not used for an extended period of time,
or if stored in temperatures that exceed
the battery manufacturer's specification.
If the batteries are not removed, battery
leakage can damage the Product.
Replace the batteries when the low
battery indicator shows to prevent
incorrect measurements.
Be sure that the battery polarity is
correct to prevent battery leakage.
Repair the Product before use if the
battery leaks.
The battery door must be closed and
locked before you operate the Product.
Use only specified replacement parts.
Safety Information
3