Metal Samples MS2700E, Руководство оператора

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2
Element Type Compatibility Thickness
Probe Life
(Span)
Tubular Loop Compatible
4 2
8 4
Wire Loop Compatible
40 10
80 20
Flush (Small) Compatible
4 2
8 4
20 10
Cylindrical Preferred
10 5
20 10
50 25
Flush (Large) Preferred
5 2.5
10 5
20 10
40 20
Table 1. Standard ER Probe Elements
The MS2700E transmitter measures an ER probe utilizing a high ‐ resolution, 16 ‐ bit measurement.
This allows the unit to detect much smaller amounts of metal loss, thus responding faster to
corrosion events and upsets. At 16 ‐ bit resolution the MS2700E transmitter can measure metal loss
amounts as small as 0.0015% of the probe life.
Metal loss readings taken by the MS2700E transmitter are output as a digital RS ‐ 485 signal which
can be fed into a plant control system or other recording devices. The Metal Loss is represented by
a 16 ‐ bit digital value between 0 and 65535, where:
0 = 0 mils (0% Metal Loss)
65535 = Probe Life* in mils (or 100% Metal Loss)
*The Probe Life (or Span) of the probe being used (see table 1 above.)
The Metal Loss data can be used to calculate the corrosion rate between any periods of interest.
This is covered in more detail on pages 13 and 14. More information on ER probes, their theory,
selection, and use can be found on our web site at http://www.alspi.com/erintro.htm .