Endress+Hauser Solitrend MMP20, Руководство по эксплуатации

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SWZ probe Solitrend MMP20 (Option D)
26 Hauser
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 16 Using the SWZ probe
Correct use of the probe:
• The probe measuring field must be fully located in the concrete
• The probe head must be fully inserted in the concrete to be measured, without any "air
gaps"
• When taking several measurements, the probe head should never be inserted in the
concrete at the same point. If you only take measurements at one point, there is the
danger of segregation at this point. This is because - when the probe head is removed -
the empty space can be filled with finer or more liquid particles, and the water content
value would become increasingly higher as a result.
8.3 Measurement procedure
8.3.1 Measuring in a plastic bucket
Fresh concrete should always be measured in a plastic bucket, as this rules out any
influence of metal on the measurement. Due to the propagation of the measuring field
(waves in the graphic), select a bucket with a capacity of approx. 10 l as shown below. The
bucket should be high enough to ensure that there is still sufficient space between the
probe and the base of the bucket when the probe is inserted into the concrete.
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 17 Measuring field propagation of the SWZ probe
To prevent segregation, do not shake the fresh concrete in the bucket. Once the probe
has been inserted, tap the side of the bucket 2-3 times with your foot so that the
concrete is compact enough to ensure that the fresh concrete surrounds the probe
surface at the dark ceramic plate without any air pockets.
At least 5 measurements should be taken; each time the probe should be inserted at the
side of the bucket at different points, spaced at intervals of 70 °