Installation Position And Flow Direction - Honeywell TRZ2 Série Mode D'emploi

 Hexagon screws and nuts for flanges to DIN EN 1092-1
Material / Strength class
Screw
5.6
8.8
CK 35
25CrMo4
Table 5 | Suitable screws
 Stud bolts with continuous thread for flanges to ASME B 16.5
Material / Strength class
Screw
A193 B6
A193 B7
Table 6 | Suitable stud bolts
 Other equivalent materials may also be used.

3.5 Installation position and flow direction

 Install the turbine gas meter or quantometer ideally in a horizontal
position with the index at the top.
 The permitted installation/operating positions of the meter are specified
on the main plate in accordance with the designations "H", "V" or "H/V"
(H = horizontal, V = vertical) to DIN EN 12261. If you have specified the
installation or operating position when ordering, all attachments will have
been fitted in accordance with the installation position ex-works.
 The minimum length of the inlet section for TRZ2 must be at least twice
the nominal diameter for reasons relating to measurement accuracy. An
inlet section of ≥ 5 x DN is required for TRZ2 DN 50.
 The inlet section must be designed as a straight pipe section with the
same nominal diameter as the meter.
 The length of the outlet section is at least 1 x DN of the same nominal
diameter.
73018696f © Elster GmbH | All rights reserved. Subject to modification
Nut
5
8
CK 35
25CrMo4
Nut
A194 Gr. 6 up to 100 bar / 0°C
A194 Gr. 2H up to 100 bar / -25°C
Operating limits
up to 40 bar
down to -10°C
up to 100 bar
down to -10°C
up to 100 bar
down to -25°C
Operating limits
Honeywell
Standards
DIN ISO 4014
DIN ISO 4032
DIN 2510
EN 10269
Standards
ASME B 1.1
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