KRAL BEM 500 - Appendix; Glossary

16 Appendix
16.1 Glossary
Component Parameter Unit Value
Output Output voltage [VDC] 24±2%
Output current max. [mA] 625
Output power [W] 15
Short-circuit protection Continuous (auto recovery)
Overvoltage protection Yes
Environment Operating temperature [°C] 0~+40
Storage temperature [°C] -20°C~+85
Dimensions [mm] 80.6 x 47.9 x 43.3
Weight [g] 130
Tab.12: Technical data EEN13
Cable assignment
Connection Function Color
Output + 24V White
GND Black
16 Appendix
16.1 Glossary
Designation Meaning
Updating rate
o Shortest period in which a change is displayed in the display
Analog output
o Represents an internal digital value as an electrical value (0–10V, 4–20mA)
o Is updated with the cycle time
Analog input
o Converts an electrical value (0–10 V, 4–20 mA) into a digital value
Resolution
o Maximum number of possible subdivision steps for describing a value
Baud rate
o Rate of data transfer per time unit (bit/s)
Density
o Ratio of mass-to-volume (e.g. kg/m
3
)
density calculation
o Describes the relationship of density-to-temperature with two values (density for reference
temperature)
o Maps the volume coefficient of expansion
o Temperature <70°C: Density calculation takes place for diesel
temperature ≥70°C: Density calculation takes place for heavy fuel oil
Density determination
o The current density is determined by means of the temperature measurement, either via one or
two density tables (interpolation) or via density calculation.
Density table
o Describes the relationship of density-to-temperature
o Maps the volume coefficient of expansion
Differential measurement
o The values of two flowmeters are measured and subtracted
Flow rate
o Amount flowing per time unit (e.g. l/s)
Flow direction detection
o Detection of the flow direction through two sensors with square wave signals out of phase by 90°
Adjusting time
o Time span after whose expiry the output is identical with the input
Single-line measurement
o The values of a flowmeter are measured and evaluated
Electronic unit
o Display and processing unit BEM300/BEM500
o Display and processing unit BEM100/BEM150
Remote display
o Additional display of the values of the electronic unit
Galvanic isolation
o Isolation of differing voltage potentials
Averaging
o Low-pass filter function for suppressing abrupt changes
Limit frequency
o Minimum or maximum frequency that can be used
Limit value
o Set value at which an action is carried out (e.g. switching of a relay) when it is reached or
exceeded
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OIE 12en-GB Edition 2020-03
Operating instructions