Safety Precautions and Warnings
MC4 User Guide 29
General Warnings Concerning Pressure Measurement
The optional pressure T-hose is rated to the maximum pressure of
20 bar at 21°C (290 psi at 70°F). Applying higher pressure can be
hazardous. We recommend the use of the optional pressure hose
set. When using other hoses and connectors, make sure they are
high quality products that withstand the used pressure.
To avoid damaging the calibrator, use hand tightening only (max.
torque 5 Nm) when connecting the pressure measurement hose
to the internal pressure module. If the use of tools is required to
secure the connection (typically an internal pressure module with
a pressure range of 20 bar / 300 psi), apply the counterforce with a
spanner on the connector body's hexagonal part.
Always depressurize the system before opening or connecting
any pressure fittings or connectors. Use proper valves for venting
the system. Ensure that all connections are made correctly and
that the hose and the connectors are intact.
The allowed pressure media for internal pressure modules is
inert, non- toxic, non-explosive media. External modules have the
allowed media printed on the module's sticker. Using unsuitable
pressure media may destroy the pressure module/calibrator.
External Pressure Modules: Use only the pressure media stated
on the pressure module. Use of wrong type of Pressure Media
may destroy the pressure module.
Never exceed the maximum pressure of a pressure module. The
internal pressure module's maximum pressure is stated on
calibrator's sticker. The maximum pressure of external modules is
stated on module's sticker and mentioned in the Instruction
Booklet that is provided with the external module.
Never plug a hose with your hands or put hands in front of a gas
spray coming from a leakage. A gas bubble in the blood
circulation can cause death.
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