Emerson Rosemount 2051 Reference Manual page 62

Hardware Installation
September 2020
Wet leg condition
Condensation of the gas above the liquid slowly causes the low side of the transmitter
piping to fill with liquid. The pipe is purposely filled with a convenient reference fluid to
eliminate this potential error. This is a wet leg condition.
The reference fluid will exert a head pressure on the low side of the transmitter. Zero
elevation of the range must then be made. See
Figure 3-13: Wet leg example
62
Figure 3-13.
Rosemount 2051 Pressure Transmitter
Reference Manual
00809-0100-4107