Vertical Meter Installation
In most process applications, some level of gas or vapor exists in a liquid service, even if the liquid is water As a result, the
piping configuration must be designed so gas can rise back into the flow stream The process piping should be extended
horizontally a very short distance from the downstream tap and then sloped at a nominal 1:12 angle to the top of the
manifold block Mount the manifold block horizontally below the upstream tap so that piping from the upstream tap to the
manifold slopes downward also
WHEN THE PROCESS IS TURNED OFF, PARTICULATES MAY SETTLE IN THE LOW-PRESSURE PORT. FLUSH THE
LOW-PRESSURE PORT WITH AN INERT FLUID BEFORE STARTING THE METER.
OTEE:
N
Do not use downward flow piping configurations that use the standard upstream and downstream pressure ports for
liquid applications due to the risk of trapping gas
Transmitter Calibration
Calibrate transmitters (differential pressure and/or multi-variable) according to the manufacturer’s recommendations,
appropriate national or company standards and contractually agreed methodology Consider the process conditions in which
the Gemini Cone meter and transmitter are installed and operated
HI
LO
Fl
ow
HI
LO
Fl
ow
DP Transmitter
or
Direct Read Gage
Side View
DP Transmitter
or
Direct Read Gage
Front View
3-Valve Manifold
3-Valve Manifold
Figure 5: Typical vertical installation for liquids
Meter Installation for Liquid Service
Page 14
June 2018
DPM-UM-00206-EN-03
