Hexagon screws and nuts for flanges in accordance with DIN EN 1092-1
Material / strength class
Screw
Nut
Operating limits
Standards
5.6 5
8.8 8
up to 40 bar
down to -10°C
DIN ISO 4014
DIN ISO 4032
CK 35
CK 35
up to 100 bar
down to -10°C
DIN 2510
Stud bolts with continuous thread for flanges
in accordance with ANSI/ASME B 16.5
Material / strength class
Bolt
Nut
Operating limits
Standards
A 193 B6
A 194
Gr. 6
up to 100 bar
down to 0°C
A 193 B7
A 194
Gr. 2H
up to 100 bar
down to -50°C
ANSI/ASME B 1.1
Other equivalent materials may also be used.
7. Pulse generators
LF pulse generators
(Type IN-S) may be plugged onto the side of
the counter cover for
volume pulse output
to external devices (e.g.
a volume corrector).
Fit the pulse generator (if required) as follows:
- Slide both
guides
of the IN-S pulse generator into the guide slot
on the counter cover until the guides can be heard to engage
(clicking sound).
- Assign the
terminals
on the plug in accordance with the pin
assignment on the meter/pulse generator.
-
Use a
screened cable
to the external device.
You can use
HF pulse generators
for higher frequencies (Types
A1R and A1S) (if available). HF pulse generators are screwed into
the meter housing pressure-tight. However, the connection plug can
be turned.
- Assign the
terminals
on the plug in accordance with the pin
assignment on the unit.
- Use a
screened cable
to the external device.
Pulse generators for subsequent installation
are also available.
HF pulse generators (Type A1S) can, however, be fitted
only by
the After-Sales Service
. By contrast, you can connect the plug yourself, as described
above.
Warning!
All pulse generators are intrinsically safe and may be connected only to
intrinsically safe circuits
if used in
potentially explosive atmospheres
. The safety
barriers must comply with the requirements of ignition protection
EEx ib IIC
(see also
Marking in Annex A).
8.
Pressure test point
A straight male coupling in accordance with DIN 2353 is pre-fitted on the meter housing for
connection of a pressure sensor for instance.
The
pressure test point
is marked
p
m
and is designed for connection of d= 6 mm steel
tube in accordance with DIN EN 10305-1 (e.g. steel grade E 235).
All rights reserved. Subject to technical modification.
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