15
4 Mounting
MINITRAC 31 • 4 … 20 mA/HART - four-wire
40447-EN-130430
Density measurement
A density and concentration measurement is possible on pipelines
and vessels. The accuracy of the measurement increases in propor-
tion to the radiated length (L) of medium. This is particularly important
in the case of products with low density or small tube diameters.
Therearedierentwaystoincreasetheradiatedlength(L)ofthe
medium.
L
L
L
1
4
a
b
2
3
Fig. 5: Installation possibilities - Density measurement or concentration meas-
urement
1a Direct radiation - Horizontal mounting
1b Direct radiation - Vertical mouting or when the lead cover is used as protec-
tion against ambient radiation
2 Inclined radiation for extention of the radiated length (L)
3 Extension of the radiated length (L) by adding a tube angle piece as meas-
uring distance
4 Integrated lead cover as protection against ambient radiation - the instru-
ment is hence shielded laterally
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