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Model 7000 Series Turbine Flowmeter Section 2

BestPracticesforInstallation

Before installing a Barton turbine owmeter, read the following best practices

in their entirety.

Filtration

All meters should be installed with upstream ltration to isolate the meter

from damage from foreign objects in the piping system. See the Barton 7000

Series product data sheet for recommended ltration size. Cameron offers

start-up screens as an optional accessory to prevent damage from foreign

objects.

Avoid the use of Teon

tape on body threads. Strands can enter the ow-

stream and collect on the rotor, causing measurement error.

All meters should be isolated from gas or liquid “slugs” which can cause

damage by over-speed and water hammer.

Electrical Installation

Consider the process operating temperature when selecting the type and

location of electric tting and instrument components. Heat conducted and

radiated from the turbine can damage wiring, connectors, electrical housing

and circuit boards. The meter can be installed so that the pickup coil is in any

plane. Avoid orienting the pickup coil in a 12 o'clock position in applications

with elevated temperatures.

Where possible, minimize the length of signal transmission cables from the

pickup. The signal from the turbine is a low-voltage AC sine wave that can be

as low as 30mV peak-to-peak. Electrical noise on the wires will cause false

counts on the readout instruments. Direct-mounting a totalizer or preampli-

er is preferred. If this is not possible, ensure that the signal cable is not near

power cables, other signal cables, or routed where electrical noise may inter-

fere with signal transmission.

Follow common wiring installation practices, using quality cable (twisted

pair, shielded with ground wire).

Flowmeter Position

Barton turbine owmeters are calibrated in a horizontal position. Therefore,

the best correlation of calibration occurs when the meter is operated in this

plane. However, the meter will operate satisfactorily in any position.

Sensia Barton 7000 Series User Manual

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