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EN.IO.SGE.25.SMART
1.4. Definition and abbreviations
Table 1. Definition and abbreviations.
L.P.
Abbreviation
1
LRV
2
URV
LRL
3
LSL
URL
4
USL
5
LPL
6
UPL
7
LSAL
8
USAL
9
AL_L
10
AL_H
11
I_AL
8
"Lower Range Value" – the value of the set range expressed in physical units corresponding to the
current of 4,000 mA, i.e. 0% of the output setpoint. The set range cannot exceed the set range limits.
The minimum width of the set range |(URV-LRV)| is limited to 10% of the base range (URL-LRL).
"Upper Range Value" – the value of the set range expressed in physical units corresponding to the
current of 20,000 mA, i.e. 100% of the output setpoint. The set range cannot exceed the set range
limits. The minimum width of the set range |(URV-LRV)| is limited to 10% of the base range
(URL-LRL).
"Lower Range Limit" or "Lower Sensor Limit" - lower limit of set range expressed in physical units.
Value (URL-LRL) or (USL-LSL) is referred to as the base probe range.
"Upper Range Limit" or "Upper Sensor Limit" – upper limit of set range expressed in physical units.
Value (URL-LRL) or (USL-LSL) is referred to as the base probe range.
"Lower Processing Limit" – lower limit of digital processing of measured value. The probe processes
a digital measurement up to 50% of the base range width below the lower limit of set range LRL
(LSL). After reaching the LPL and when below this value up to LSAL, the probe freezes the refreshing
of digital value of the measurement.
"Upper Processing Limit" – upper limit of digital processing of measured value. The probe processes
a digital measurement up to 50% of the base range width above the upper limit of set range URL
(USL). After reaching the UPL and when above this value up to USAL, the probe freezes the
refreshing of digital value of the measurement.
"Lower Saturation Limit" - lower limit of the A/D probe processing range. The lower limit of the A/D
probe saturation is on the pressure/differential pressure scale below the LPL point and is associated
with the minimum pressure, at which the analogue-digital pressure measurement probe reaches the
lower limit of the processing capacity. The exact determination of this pressure is not possible,
however usually the pressure does not exceed the pressure corresponding to 200% of the base range
width (URL-LRL) below the lower limit of the digital processing of measured LPL value.
"Upper Saturation Limit" - upper limit of the A/D probe processing range. The upper limit saturation
point of A/D probe is on the pressure/differential pressure scale above the UPL point and is
associated with the maximum pressure at which the analogue-digital pressure measurement probe
reaches the upper limit of the processing capacity. The exact determination of this pressure is not
possible, however usually the pressure does not exceed the pressure corresponding to 200% of the
base range width (URL-LRL) above the upper limit of the digital processing of measured UPL value.
Low current alarm.
High current alarm.
The alarm current set by the probe controller in the current loop.
Meaning
Revision 01.A.001/2021.09