Terms And Abbreviations - KROHNE OPTIBAR PM 5060 C Manuel De Référence

OPTIBAR PM 5060 C

2.4 Terms and abbreviations

The following terms and abbreviations are used in this document.
URL URL URL URL
Upper Range Limit
LRL LRL
LRL LRL
Lower Range Limit
URV URV
URV URV
Upper Range Value
LRV LRV LRV LRV
Lower Range Value
SPAN SPAN
SPAN SPAN
Span
CAL SPAN CAL SPAN CAL SPAN CAL SPAN
Calibrated Span
TD TD TD TD
Turn Down
Example for TD
LRL LRL= 0 bar
LRL LRL
URL= 3 bar / 43.5 psi URL
URL URL
URV= 2 bar / 29 psi URV URV URV
LRV LRV LRV LRV= 0.5 bar / 7.25 psi
01/2021 - 4004819802 - MA OPTIBAR PM 5060 C R04 fr
Upper measuring range limit. Also called nominal range. The highest value
that can be measured by a particular device.
Lower measuring range limit. The lowest value that can be measured by a
particular device.
The calibrated measuring range or the highest adjusted measured value.
This value corresponds to the 20 mA signal.
The calibrated measuring range or the lowest adjusted measured value.
This value corresponds to the 4 mA signal.
Measuring span or measuring range. SPAN = URL – LRL
Calibrated or adjusted measuring span. CAL SPAN = URV – LRV. Also called
"cSPAN".
This is the span set to the 4...20 mA output.
The ratio from the measuring span to the adjusted measuring span.
TD= SPAN/(CAL SPAN) = (+URL)/(CAL SPAN)
The following applies: URV ≤ URL, CAL SPAN ≤ SPAN, TD ≥ 1
TD Turn Down TD TD
SPAN= 3 bar / 43.5 psi SPAN
SPAN SPAN
CAL SPAN= 1.5 bar / 21.75 psi TD CAL SPAN CAL SPAN CAL SPAN
DESCRIPTION DE L'APPAREIL
TD= 2:1 TD TD
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