Emerson 8712E manual Mounting, Upstream/Downstream Piping, Flow Direction, Sensor Orientation

Quick Installation Guide

00825-0100-4664, Rev BB January 2013

Rosemount 8712 / 8700 Series

STEP 3: MOUNTING

Upstream/Downstream Piping

To ensure specification accuracy over widely varying process conditions, install the sensor a minimum of five straight pipe diameters upstream and two pipe diameters downstream from the electrode plane (see Figure 3).

Figure 3. Upstream and Downstream Straight Pipe Diameters

Flow

5 Pipe Diameters 2 Pipe Diameters

Installations with reduced straight runs from 0 to 5 pipe diameters are possible. In reduced straight pipe run installations, performance will shift to as much as 0.5% of rate. Reported flow rates will still be highly repeatable.

Flow Direction

The sensor should be mounted so the FORWARD end of the flow arrow, shown on the sensor identification tag, points in the direction of flow through the sensor.

Sensor Orientation

The sensor should be installed in a position that ensures the sensor remains full during operation. Vertical installation allows upward process fluid flow and keeps the cross-sectional area full, regardless of flow rate. Horizontal installation should be restricted to low piping sections that are normally full. In these cases, orient the electrode plane to within 45° of horizontal.

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