10
Mini-Convectron Module with RS-485
Instruction Manual - 275545
Overpressure Conditions
Series 275 instruments are furnished calibrated for N
2
. They also measure
the pressure of air correctly within the accuracy of the instrument. Do not
attempt to use a Series 275 Gauge calibrated for N
2
to measure or control
the pressure of other gases such as argon or CO
2
, unless accurate
conversion data for N
2
to the other gas is properly used.
A pressure relief valve should be installed in the system if the possibility of
exceeding 1000 Torr (1333 mbar) exists.
Suppliers of pressure relief valves and pressure relief disks are listed in the
Thomas Register
under “Valves, Relief” and “Discs, Rupture.”
Be aware that an electrical discharge through a gas
may couple dangerous high voltage directly to an
ungrounded conductor almost as effectively as would
a copper wire connection. A person may be seriously
injured or even killed by merely touching an exposed
ungrounded conductor at high potential.
This hazard is not unique to this product.
Install suitable devices that will limit the pressure to
the level that the vacuum system can safely
withstand. In addition, install suitable pressure relief
valves or rupture disks that will release pressure at a
level considerably below the pressure that the system
can safely withstand.
Series 275 Gauges should not be used above 1000
Torr true pressure.
If accurate conversion data is not used, or is
improperly used, a potential overpressure explosion
hazard can be created under certain conditions.
