Elster Instromet EK205, Operating Manual

Page: 25 / 71

Installation , connection and commissioning 25
5.1.3 Installation on a wall
Using the wall mounting feet (see appendix), install the EK205 on the wall.
Ill.: 6
1. Using the four self-cutting screws
provided on the rear of the EK205
,
install the wall mounting feet. The
fastening feet can be fastened in
different positions.
2. Drill holes in the wall in accordance
with the position of the installed
installation feet.
Select the wall plugs
suitable for the size of the screws and
insert them in the borings of the well.
3. Use four screws for fastening the
EK205, e.g. 5 x 35 mm.
5.1.4 Three-way cock 7
When installing the pressure sensor, a three-way cock is usually installed in order to carry out
an inspection of the pressure sensor in built-in condition or for the replacement of deficient
sensors without deactivating the overall gas line. The three-way cock available from Elster
has the following structure:
The pipeline from the pressure sensor to the meter must be laid in a falling
manner so that, where applicable, water cannot damage the pressure sensor
or influence the measurement precision.
7
Not applicable when using EK205 as a Temperature Conversion Device.
Ill.: 7
1 : From the meter: From the pressure
connection of the gas meter
For bellow-type gas flow meters, this is
carried out on the input side of the meter
2 : For the MU: To connect the gas sensor
of the Volume Conversion Device
3 : Test connection: Possibility to take test
pressure or to gibe external pressure on
the pressure sensor of the Volume
Conversion Device.
When installing the three-way cock, it must be noted that the position of the
operating lever is checked with the corresponding throughputs, as the lever
can be removed and may be installed in a twisted manner.
Prüfen mit
Betriebsdruck
B
e
trie
b
s-
ste
llu
n
g
P
rü
fe
n
m
it
F
rm
d
d
ru
ck
Absperrung
45° Stellung
1
2
3