Safety Cautions
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Safety Cautions
For safe use of this vacuum gauge, carefully read this manual and comply with the warnings and cautions
given in the manual.
If the vacuum gauge fails, immediately turn OFF the power.
Use of a failed gauge may cause fire or electric shock. For repair, contact your
local ULVAC representative or ULVAC JAPAN.
If the vacuum gauge gets unusually hot or gives off smoke or unusual smell,
immediately turn OFF the power. Otherwise, fire can result. For safety, contact
your local ULVAC representative or ULVAC JAPAN.
Turn OFF the power before replacing a fuse. Replacing a fuse with the power
turned ON can cause electric shock.
Whenever mounting the gauge, unplug the power cable.
Use a fuse of the prescribed rating. Do not use a fuse other than the prescribed
one or do not short the fuse holder. Damage or fire may result.
Prior to turning ON the power, make sure that the vacuum gauge operating
voltage and the supply voltage are in agreement. Connection of incorrect
power can cause damage to the vacuum gauge and fire.
Check recorder connection
The recorder output is afloat from ground potential. Always connect the
recorder input to the recorder terminal by insulating it from ground. If it is
connected to GND potential by mistake, the meter will not indicate the correct
value. Also the vacuum gauge may be damaged.
Do not try to disassemble the vacuum gauge (controller, sensor head cable and
Do not modify the vacuum gauge (controller, sensor head cable and sensor
head). If it is modified, its functions are not warranted. Also fire or electric
Do not connect the sensor head to a test object of which pressure is in excess of
atmospheric pressure. If the pressure in the sensor head exceeds atmospheric
pressure, the sensor head will be damaged or it will pop out from the connector,
causing injury to the surrounding, including human body. If the pressure exceeds
atmospheric pressure, provide an isolation valve so that the pressure in the sensor
head does not exceed atmospheric pressure.
Do not use the gauge in a place where it may be splashed with water. If it is
splashed with water, failure, earth leakage or fire can result.
Do not plug the air vents of the vacuum gauge. If the air vents are plugged, heat
will be contained inside and the gauge may be damaged. The gauge will not
indicate a normal value either.
Do not give an impact to the sensor head.
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