Elster 83 462 140, Operating Manual And Installation Instructions, Page: 31 / 126

Volume Conversion Device EK260
Elster GmbH 31
3.4 Temperature list
AD Designation / value Unit Access Address DC
T Temperature °C - 6:310_1 4
T.LW Lower warning limit temperature °C S 9:150 8
T.UW Upper warning limit temperature °C S 9:158 8
TMin Lower alarm limit temperature °C C 6:3A8_1 8
TMax Upper alarm limit temperature °C C 6:3A0_1 8
MRL.T Temperature meas. range lower limit °C C 5:224_1 8
MRU.T Temperature meas. range upper limit °C C 5:225_1 8
T.F Temperature substitute value °C S 6:311_1 8
Tb Temperature at base conditions K C 6:312 8
Md.T Temperature mode - C 6:317 7
Typ.T Temp. sensor type - C 5:223 8
SNT Serial number of temperature sensor - C 5:222 8
Eq1T Coefficient 1 of temperature equation - C 5:280 8
Eq2T Coefficient 2 of temperature equation - C 5:281 8
Eq3T Coefficient 3 of temperature equation - C 5:282 8
T1Adj Adjustment value 1 for temperature °C C 5:260_1 8
T2Adj Adjustment value 2 for temperature °C C 5:261_1 8
Prog Accept temperature adjustment - C 5:259 2
T.Mes Temperature measurement °C - 5:210_1 4
T.MP
Ø
Measurement period mean temperature °C - 15:160 16
T.Mon max Month's maximum temperature °C - 17:160 16
T.Mon min Month's minimum temperature °C - 18:160 16
(Legends: see page 22)
T Temperature
T is the temperature which is used for computing the conversion factor (
→
3.5)
and hence the volume at base conditions (
→
3.1).
In disturbance-free operation the measurement T.Mes (see below) is used:
T = T.Mes .
With a relevant disturbance (alarm), the substitute value T.F (see below) is used:
T = T.F .
In addition, disturbance quantities are then counted (
→
3.1, 3.2) and the message
"T Alarm Lim." displayed (
→
page 45 ). Relevant disturbances are:
−
T.Mes is located outside of the set alarm limits TMin and TMax (see below).
−
With a connected encoder (Md.I1 = 5,
→
3.10) no actual volume can be
measured for more than 20 seconds. Since the gas flow variation is not known
for the time period and therefore no gas quantities can be assig ned to the
measured values of pressure and temperature, the conversion occurs as
disturbance quantities with substitute values for pressure and temperature.
(
→
4.5)