Connections
MC4 User Guide 7
Pressure Modules
Internal Gauge Type Pressure Module
MC4 may include one gauge type Internal Pressure Module.
The connector for the gauge type Internal Pressure module is
located in MC4's upper panel.
The allowed pressure media for gauge type internal pressure
modules is inert, non-toxic, non-explosive media. Use of pressure
media classified as dangerous is prohibited.
For Beamex 60° cone connector: To avoid damaging the calibrator,
use hand tightening only when connecting the pressure
measurement hose (max. torque 5 Nm, approx. 3.6 lbf ft). If the use
of tools is required to secure the connection, apply the counterforce
with a spanner on the connector body's hexagonal part.
Remember to be cautious when working with pressure and pressure
modules. See also chapters Safety on page 27 and Safety
Precautions and Warnings on page 28.
Internal Barometric Pressure Module
An Internal Barometric Pressure Module may also be included in
MC4. The Barometric Module may be installed together with a
Gauge Type Internal Pressure Module or it may be the only Internal
Pressure module installed in MC4.
The Internal Barometric Module measures the barometric pressure
through a connection found on the back side of MC4. Normally
nothing need to be connected to the barometric pressure module's
connector.
External Pressure Modules
MC4 has a connector for External Pressure Modules (EXTs). The
connector is located on the left side of MC4.
If an External Pressure Module is connected or removed, MC4
notices it automatically. More of pressure measurement in part B of
this manual.
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