Elgas ELCOR - Introduction; Basic Description of the Device

ELCOR, ELCORplus
7
Symbols and Terms
Symbol
Meaning
Unit
AGA8-G1
...
method to calculate gas compressibility factor
AGA8-G2
...
method to calculate gas compressibility factor
AGA8-
DETAIL
...
method to calculate gas compressibility factor
(Note: The earlier designation of this method was AGA8-
92DC)
AGA NX-19 mod
...
method to calculate gas compressibility factor
ASC
...
Authorized Service Centre
BTS
…
Base Transceiver Station
CLO
...
4-20mA current output module
CRC
...
checksum - for data protection purposes
CTR
...
communication protocol
DC, dc
...
DC voltage
dE
…
energy addition (difference)
MJ
dE
s
…
energy difference (difference) in error conditions
MJ
dV
…
addition primary volume V
m
or V (difference)
m
3
dV
b
…
addition converted volume V
b
(difference)
m
3
dV
bs
…
increment (difference) of the recalculated volume Vb under the
error conditions
m
3
dV
c
…
addition corrected primary volume V
c
(difference)
m
3
dV
m
…
addition primary volume (difference)
m
3
E
…
energy
MJ
Es
…
substitute energy value
MJ
EDTxx
…
digital transducer of pressure EDT 96 or of temperature EDT
101
ELGAS ver. 2
…
Communication protocol developed by ELGAS, s.r.o.
EMC
...
electromagnetic compatibility and resistivity
EMI
...
electromagnetic radiation
EVC
Electronic gas volume corrector
firmware, FW
...
software in the device
GOST 30319.2
…
method to calculate gas compressibility factor
GOST 30319.3
…
method to calculate gas compressibility factor
HF
…
high frequency
H
s
...
combustion heat
MJ/m
3
JB
...
intrinsically safe, intrinsic safety
LF
…
low frequency
MID
…
Measuring Instrument Directive, 2014/32/EU Directive about
measuring instruments supply to the market (NV 120/2016
Sb.)
Modbus
...
Modicon communication protocol [15]
MPE
…
maximum permissible error
M900
...
RMG communication protocol
RTD sensor
...
Resistance Temperature Detector
SGERG-88
...
method to calculate gas compressibility factor, for more details
refer to [18]
SW
...
software – PC program
C
...
conversion factor
-
K
...
gas compressibility factor (Z/Z
b
)
-
k
p
...
gas meter constant (number of pulses per 1m
3
)
imp/m
3
N
...
number of input pulses from the gas meter
imp