METEO INSTALLATION FOO GAS SEOVICE
Installation Options
• Meter Orientation
—Gemini Cone meters can be installed in a horizontal or vertical position Horizontal is the standard
orientation, however where space is very limited, a vertical position may be the best option
• Connection Tube Orientation
—The orientation of connection tubing is dictated by the position of the meter, the type
of product being measured and, for vertical meter installations, the direction of flow When a vertically oriented metering
system is used, give special consideration to the tubing configuration to prevent liquid being trapped in gas differential
pressure lines
Horizontal Meter Installation
The pressure taps on the Gemini Cone meter should be between the horizontal centerline and the top of the pipe
(3…12 o'clock or 9…12 o'clock) If the fluid is a wet gas (that is, a gas containing small quantities of liquids or condensate),
situate the pressure taps in a vertical position (12 o’clock) to allow all liquids to drain away from the transmitter If the
connecting tubing extending from the cone meter to the transmitter is not installed in a vertical position, it should slope
upward (at least 1:12) for proper drainage
Flow
HI LO
Flow
Side View
3-Valve Manifold
DP Transmitter
or
Direct Read Gage
Top View
3-Valve Manifold
DP Transmitter
or
Direct Read Gage
HI LO
Φ
HI LO
Notes:
1. ø = 1 in/ft (80 mm/m)
2. Minimize all lead line lengths.
Figure 6: Typical horizontal installation for gases
Condensate Chamber (Drip Pot) (Optional for Wet Gas)
The condensate chamber is a collection vessel that helps prevent liquid pockets from collecting in gas instrument tubing
If drip pots are used, they should ideally be mounted immediately following the shutoff valves installed near the upstream
and downstream pressure taps of the meter For wet gas applications, the piping from the meter connects to the condensate
chamber in a 3 o'clock or 9 o'clock position on a horizontal plane The chambers are positioned vertically so that the meter
connection and instrument connection points are at the top and drain points are at the bottom of the chambers
Meter Installation for Gas Service
Page 15
June 2018
DPM-UM-00206-EN-03
