OperatingLocation - Elster Instromet TRZ2-Q Manual De Instrucciones

Elster-Instromet
3. Operating Location
The minimum length of the inlet section for TRZ2 must be at least twice the nominal di-
ameterforreasonsrelatingtomeasurementaccuracy.Aninletsectionof≥5xDNisrequired
forTRZ2DN50.
Theinletsectionmustbedesignedasastraightpipesectionwiththesamenominaldiameter
as the meter.
Thelengthoftheoutletsectionisatleast1xDNofthesamenominaldiameter.
Flowdisturbances
resultingfrom:
Minor disturbances
– single manifolds
–twinmanifolds
– diffuser and
– contractors
Major disturbances
– pressure regulators
for gas
– other restrictor
devices
If you...
– wishtomixin odorization agents or
use solenoid valves,
–
pleasealwaysfitthemonlydownstream of the meter.Otherwise,theunitmaybedamaged.
6
Typical
inlet sections
Pipe sections in-
stalled at a distance
of 2D upstream of
the meter inlet
©ElsterGmbH·Allrightsreserved·Subjecttotechnicalmodification
TRZ2
PTB approval
symbol
D97 7.211
7.211.17 97.10
DE-09-MI002-PTB001
L≥2D
Noflowconditioner
L≥2D
Noflowconditioner
Q
L≥5D
L≥5D
Flowconditioner
recommended