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
46
OIE 12en-GB Edition 2020-03
Operating instructions