Cameron Scanner 3100 EFM - Installation Procedure-Remote Mount to Orifice Meter or Cone Meter

Hot Legs
• Hot legs should be large diameter (1/2 in. recommended)
• Hot legs should be as short as possible. If these sections must be more than 1ft in length, insulate them.
• Elbows and bends should not form any traps in which liquid can accumulate.
• Hot legs should be sloped along their entire length to allow liquids to drain back into the pipe.
Cold Legs
• Cold legs should enter the multi-variable sensor through its bottom ports. Side port installation is also available.
Contact your sales representative or technical support for assistance with side port installation.
• Cold legs should not be insulated and should be a minimum of 2 ft in length to allow proper convection cooling of
the process uid to below 120 degF. The nominal rate of cooling is 100 degF/ft, with an ambient temperature of 70
degF.
• If the cold leg must be installed horizontally, ensure a slope of approximately 1 in./ft to allow air bubbles to oat up
into the pots.
• Elbows and bends should not form any traps for air bubbles.
• Cold legs should be lled with a suitable antifreeze. Dibutyl phthalate is recommended.
Antifreeze
Dibutyl phthalate (DBP) has the following advantages over glycol antifreeze:
• Does not mix with water, and therefore does not become dilute over time; its specic gravity does not shift.
• It is slightly denser than water, so it will stay in the pot permanently.
• It is non-ammable.
• It is much less toxic than glycol.
• It is available from industrial suppliers.
Valves
• Use only full-opening block valves that are rated for steam service.
• Use only blowdown valves rated for steam service. Periodic blowdowns are recommended to prevent scale build up.
CAUTION Before starting the system, remove the caps and add water or antifreeze if necessary to completely
ll the pots and cold legs. Air trapped in the lines will produce errors in differential pressure mea-
surements.
!
WARNING: EXPLOSION RISK. Housing temperature must not exceed 70 degC (158 degF). Excessive tem-
peratures, which could result from ambient conditions combined with radiated and conductive heat from
the process, could cause the internal lithium battery to ignite or explode.
Installation Procedure—Remote Mount to Orice Meter or Cone Meter
A Scanner 3100 can be mounted remotely and connected to an orice meter or cone meter with tubing for steam mea-
surement. The setup of the meter run and plumbing congurations can vary widely, depending upon the challenges exist-
ing on location.
43
Scanner 3100 EFM Section 2