Diverse MF500M+ Manual del usuario - Página 9

Navegue en línea o descargue pdf Manual del usuario para Instrumentos de medida Diverse MF500M+. Diverse MF500M+ 16 páginas. Magmeter

The meter provides a number that increases with the amount

of magnetite present. The following aspects should be noted:

1. The meter is corrected for gravity but it is good practice to

zero the meter, away from the pipe, in the same

orientation as the measurement to follow.

2. The meter is designed to work with a space between the

probe cap and magnetite. If the meter is too close to

magnetite (or indeed a ferritic sample) then a raw reading

of 2047 will be displayed.

3. Warning, magnetite distribution will effect the measured

value i.e. a small amount of material close to the probe

will give the same signal as a larger amount further away.

Magnetite tends to accumulate on the corners of cooling pipes

where the pipes turn from vertical to horizontal. At these

points the pipe fills up from the bottom rather than

homogeneously as per our occlusion calculations.

Under these conditions we would recommend probing the

underside, the side and the top of the pipe around the

circumference. Due to the proximity of other pipes the

underside and top of the pipes may not be accessible so we

recommend probing positions A, B and C in the Figure 2.

As the pipe fills up the signal is expected to increase on A first

then B and finally C.

Measurement technique

Page 9