Getting closer to DP transmitters
15 Jan 2000
A familiar sight to instrument engineers - and one of the banes of their life - are the piped connections between a differential pressure (DP) transmitter and the orifice plate or flange in the process line. But now Anderson Greenwood has introduced a manifold mounting system that does away with the need for NPT threads or impulse lines between transmitter and orifice.
The close-coupled unit, SaddleMount, provides rigid connection of the isolation module to the orifice flange tappings. It also incorporates a straight-through 3/8in bore (metal or soft-seated) directly from the orifice tappings to the transmitter sensing module. This reduces pulsation-induced error and attenuation, thus ensuring accurate transmitter measurement.
The system can be supplied with a block or fire-safe double block and bleed isolation module, and a choice of a three or five valve instrument manifold.
