Fujimoto Fuji Differential Pressure Transmitter FKK 4 - Manual (Page 58)

52
Typical example of piping
Level measurement of open tank
Leave the below pressure side of the transmitter open to atmosphere.
Level circulation formula
LRV = ρ.H
1
URV = ρ.(H
1
+h)
LRV = low limit of measurement (0%)
URV = high limit of measurement (100%)
ρ = measuring liquid density
H
1
= Liquid level
h = liquid level change
6.2.3 Piping of level transmitter type : FKP for open tank
Seal on mounting flange face
When mounting the flange on the pressure side, a gasket should be inserted as
follows.
0 20 40 60 80 100
Transmitter flange
Process side flange
Gasket
On the projection type, be sure to use a gasket with an internal diameter larger
than the flange to prevent the gasket form touching the seal diaphragm.
Important
Connecting method of the mounting flange
Thighten bolts of mounting flange and process flange in a diagonal order and
about three cycles.
Removal of protective cap from process connection port
The process connection port on the low pressure side is fitted with a protective
cap. Before piping, remove the cap carefully. When removing the cap,
carrefully protect the threaded portion and sealing face from damage.
Connection of transmitter and impulse pipe
After connection, close the stop valve of the transmitter in order to prevent
foreign materials from entering the inside.
H
1
ρ
h
0 20 40 60 80 100