DURAG D-R 290, Operating Manual

Page: 70 / 202

5 | Installation
70 D-R 290
6. Lay the connecting cables ( 5.2.2 Instructions for planning the electrical connec­
tions to the system [
}
66] )
7. Install and connect the supply unit(s) ( 5.7 Installation of the supply unit [
}
97] ff.)
8. Install and connect the purge air unit, and test it for correct operation ( 5.8 Installa­
tion of the purge air unit [
}
101] ff.)
9. Connect purge air hose pipes to the measurement and reflector units, bring the
purge air unit into operation and only then:
10. Attach the measuring head and reflector to the measurement duct ( 5.4.4 Installa­
tion of the measuring head and reflector [
}
76] and 5.5.1 Installation sequence
for the measuring head and reflector (when the D-SK 290 protective device is used)
[
}
84] )
11. Make the electrical connections to the components ( 5.4.5 Electrical connections to
the measuring head [
}
79] , 5.5.4 D-SK AE electrical connection [
}
88] , 5.7.2 Elec­
trical connection to the D-TB 100 supply unit [
}
98] , 5.8.3 Electrical installation of
the purge air unit [
}
102] and 5.8.4 Electrical connection for the purge air motor
[
}
102] )
12. Perform optical adjustment of the measurement unit ( 6.1 Optical alignment
[
}
107] )
13. Commission the D‑R 290 and perform a function test ( 6 Commissioning [
}
107] )
14. Program the necessary measurement parameters and calibrate the units;
perform a function test ( 6.2 Parameterisation and operation of the measuring head
[
}
108] ff.)
Installation of the D−R 290 measuring head and reflector
Adjustment flanges with welded−in pipe connections are provided as standard for in­
stallation of the measuring head and reflector within steel ducts. Thick installation to
ducts and brickwork stacks or high exhaust gas temperatures require suitably modified
flanges, which are either manufactured on site or which can be designed by DURAG.
If the welded-in pipes are more than a certain length, a larger tube diameter must be
selected (see Table 4.13 ).
Standard version of adjustment flanges: Steel 37 Material No. 1.0037
Special optional version: V4A Material No. 1.4571
Standard installation of the welded-in pipes with adjustment
flanges
Wherever possible, install or remove components only when the plant is shut down.
Before opening the duct access ports:
●
Make sure that no overpressure is present in the measurement duct.
●
Make sure that no toxic gases are present in the measurement duct.
If it is not possible to shut down the plant, and toxic gases, which may be at high tem­
perature or pressure, are present in the measurement duct:
5.4
5.4.1