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OPERATING MANUAL HPC & UMC4
4.4.4 Using the device with hazardous fluids
The sealing technology used in the standard HPC mass flow meter renders the device unsuitable for
use with hazardous fluids. Only sensors that meet the standards for safety instruments are suitable for
use with hazardous fluids.
The pathway between the sensor and transmitter must be pressure-tight so as to prevent fluid from
leaking out of a sensor in the event a sensor develops a defect.
In the case of welded components, a colored liquid penetration test may be performed on the welds, or
one joint (only the foremost seam) may be x-rayed. Alternatively, an internal pressure monitoring de-
vice can be used to detect any defect.
4.4.5 Vibration stability
The sensors are insensitive to vibration; vibration stability has been validated in accordance with
DIN IEC 68-2-6, for up to 1 g at 10 to 150 Hz.
If pipe vibration is greater than 1 g in the 5-2000 Hz range, additional mounting supports are to be
installed as shown in the following drawing. These supports will prevent vibration from affecting the
de
vice’s mechanical configuration and/or measurement readings.
Installation example
The above example represents a pipeline installation. The table and wall variant, with their accesso-
ries, are not affected by the representation.
