Terms; Abbreviations - INTEGRA Metering CALEC energy master Installation And Operating Instructions Manual

24 Appendix
24.1 Terms, abbreviations, formula symbols

24.1.1 Terms

Term Meaning
Installation side Density and specific heat capaicity are functions of temperature. It is therefore of sig-
nificance for the calculation which temperature measuring value is used. The installa-
tion side (hot or cold side) determines this.
Paired temperature Two temperature sensors are selected during production in such a way that the meas-
sensors uring errors in the temperature difference measurement are below the stipulated limiting
values.
Combined cool- Energy meter which, in the heating operation (T supply > T return) or in the cooling op-
ing/heating meter eration (T return > T supply) cumulates the energy in separate meters. See also 'BDE'.
Combined heat Heat meter comprising separate components: flow sensor, pair of temperature sensors
meter and calculator. The components can be separately replaced, altered and recalibrated.
Conformity as- Legally binding declaration of metrological EC conformity
sessment Corresponds to devices with domestic pattern/type approval of the initial calibration
Current value Momentary value of, e.g. temperature, flow rate
Supply / return flow Part of a hydraulic circuit in which the medium flows into/out of a heat exchanger. In
heating or cooling circuits, the flow sensor should always be installed in the return pipe,
since effects resulting from temperature and condensation are less there, both in heat-
ing and cooling systems.
Meter reading Energy, volume or mass, resulting from totalising a current value.
As a rule, a meter reading does not get smaller

24.1.2 Abbreviations

Abbreviation Meaning
BDE Bi-directional energy measurement: If Ts > Tr , then meter E is incremented
If Tr > Ts , then meter E- is incremented
BDV Bi-directional volume measurement, energy calculation for reverse flow:
for forward flow, meter E is incremented, for reverse flow, meter E-
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CALEC EM CALEC
fm Flow sensor, measures the flow and supplies a flow signal
Limit Limiting value
IR Infrared
IrDA Infrared interface according to the Standard of the Infrared Data Association (IrDA)
Class IA...IE Classification of pulse inputs according to EN 1434
Class OA...OE Classification of pulse transmitters according to EN 1434
SC det Short-circuit/interrupt detection; when activated, short-circuiting and power cuts are de-
tected and displayed as errors
Mod Device version without protective housing ("Mod"ule)
Prot Device version with protective housing ("Prot"ected)
Platinum resistance temperature sensors according to DIN IEC 60751,
Pt100
R = 100 Ohm at 0°C
PFM Pulse-frequency modulation or pulse/frequency modulated signal
A measured value is transmitted as frequency from 0 – 10 kHz
RDA Remote Display Adapter, 2 adapters for operation of the detached display module
calc 1 ... 3 Calculator 1 to 3
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CALEC energy master installation and operating instructions
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energy master
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