FMC Corporation - Talstar 80 사용자 설명서

Proline Promass 80 PROFIBUS PA

Installation

15

a0003597

Fig. 7: 

Installation in a vertical pipe (e.g. for batching applications)

1 = Supply tank , 2 = Sensor, 3 = Orifice plate, pipe restrictions (see Table), 4 = Valve, 5 = Batching tank

It is important to ensure that cavitation does not occur, because it would influence the oscillation 
of the measuring tube. No special measures need to be taken for fluids which have properties similar 
to water under normal conditions.
In the case of liquids with a low boiling point (hydrocarbons, solvents, liquefied gases) or in suction 
lines, it is important to ensure that pressure does not drop below the vapor pressure and that the 
liquid does not start to boil. It is also important to ensure that the gases that occur naturally in many 
liquids do not outgas. Such effects can be prevented when system pressure is sufficiently high.

For this reason, the following installation locations are preferred:
• Downstream from pumps (no danger of vacuum)
• At the lowest point in a vertical pipe.

1

2

3

4

5

1

1/24"

0.8

0.03

40

1½"

22

0.87

2

1/12"

1.5

0.06

40 FB

1½"

35

1.38

4

1/8"

3.0

0.12

50

2"

28

1.10

8

3/8"

 6

0.24

50 FB

2"

54

2.00

15

½"

10

0.40

80

3"

50

2.00

15 FB

½"

15

0.60

100

4"

65

2.60

25

1"

14

0.55

150

6"

90

3.54

25 FB

1"

24

0.95

250

10"

150

5.91

FB = Full bore versions of Promass I