6
User’s Guide 2018
Conductivity
The first parameter to consider in deciding whether or not to use a magnetic flowmeter in a
given application is conductivity. The conductivity unit of measure is microsiemens/cm or
(
µ
S/cm). The minimum conductivity level for the SAFMAG ACP is 20
µ
S/cm.
Installation
Piping and Other Considerations
The SAFMAG ACP electromagnetic flowmeter should be installed in the pipeline with the
arrow in the direction of forward flow.
The meter may be installed in horizontal or vertical pipelines. If a vertical pipeline installation
is envisaged the meter should be installed with the direction of flow being upwards, to ensure
a
full
pipe under low flow conditions. If a horizontal installation is envisaged the meter
electrodes should be installed in the horizontal plane in order to prevent entrained air or
gasses creating a problem with the measurement.
It is essential that the meter be full of liquid at all times.
If this is not the case then the meter will produce an artificially high flowrate. If obtaining a
full meter is a problem, in some cases this may be solved by repositioning the meter at the
lowest point in a “U” shaped pipe section.
Stray electromagnetic or electrostatic fields of high intensity may have an effect on the meter
reading. For this reason the meter should not be installed close to large electric motors,
transformers, communications equipment etc.
✓
3 x D min
2 x D min
✓
✓
✓
✓
✓
