94 MC6 User Manual – Appendix
WARNINGS CONCERNING ELECTRICAL MEASUREMENT AND GENERATION
MC6's OUT section terminals are protected against over voltage and over current as far
as it has been possible without affecting the accuracy. Do not however connect signals
that are above the measurement range of the selected Function.
Maximum output voltage from MC6's terminals is below 30 V. If you, however, connect
together voltages from the IN and OUT sections or if you connect external voltages to
MC6, the resulting voltage may be high enough to be hazardous.
There is no galvanic isolation between the connectors on the right side or the internal
pressure module connectors.
Although there is a galvanic isolation between MC6's IN
and OUT sections, it is for functional purposes only. Do
not exceed 60 VDC / 30 VAC / 100 mA between any termi-
nals.
Functional insulation is not intended for protection against
transient overvoltages. Do not connect measuring termi-
nals to circuits where transient overvoltages are possible.
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 con-
nector 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 Pres-
sure Media may destroy the pressure module.
Never exceed the maximum pressure of a pressure mod-
ule. 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 men-
tioned 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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