Technical data

BKI 09 ATEX 0003X

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5.4 MICROTREK 2-WIRE T.D.R. METER CHARACTERISTICS

This subsection explains:

the four principle configurations for setting up a measurement scale and what the user should be aware of in each case;

what happens when the tank is full or empty;

what is the level threshold and how to modify it and

what happens when level is measured when more than one product in the tank;

The measurement scale:

five possible configurations for analogue current output – with “Level” selected in PCSTAR 2 function 1.3.1 : Current 1 Item

A Tank height (Fct. 1.1.1)

B Probe length (Fct. 1.1.6)

C Detection delay (Fct. 1.5.1)

D Non-measurable zone

E Minimum distance between non-

measurable zone and dead zone

(Fct.: 1.1.2 – Fct.: 1.5.1)

F Upper dead zone (Fct. 1.1.2)

G Measuring range

Reference point at tank bottom

(Fct.: 1.3.1 = Level)