MPU Series B
Ultrasonic Gas Flow Meter
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PRD-0000022543 Rev. 00D Page 19 of 28
MNKS008 0.0 (4/08)
5.4. Calculation Results
The table below identifies the results of the DECA algorithms.
Object
number
ModBus
Address
Description Unit
170 340 Calculated Velocity of Sound m/s
171 342 Calculated average Mole Weight kg/mol
172 344 Calculated DZ/DP 1/Pa
173 346 Calculated DZ/DT 1/K
174 348 Calculated Isobaric Heat Capacity J/kmol
175 350 Calculated gas compressibility, line -
176 352 Calculated Gas Density, line kg/m3
177 354 Spare x 3
180 360 Mole Methane (C1) % mol
181 362 Mole Nitrogen (N2) % mol
182 364 Mole Carbon dioxide (CO2) % mol
183 366 Mole Ethane (C2) % mol
184 368 Mole Propane (C3) % mol
185 370 Mole Water (H2O) % mol
186 372 Mole Hydrogen sulphide (H2S) % mol
187 374 Mole Hydrogen (H2) % mol
188 376 Mole Carbon oxide (CO) % mol
189 378 Mole Oxygen (O2) % mol
190 380 Mole i-Butane (IC4) % mol
191 382 Mole n-Butane (NC4) % mol
192 384 Mole i-Pentane (IC5) % mol
193 386 Mole n-Pentane (NC5) % mol
194 388 Mole n-Hexane (NC6) % mol
195 390 Mole n-Heptane (NC7) % mol
196 392 Mole n-Octane (NC8) % mol