Trox Technik X-CUBE-Ex Guide D'utilisation page 82

BA-CFD-RLM-ATEX 3.9 – 04/2016
Figure 7-5 :Built in fan
K-Factor deviation
Standard calibration
K10 < 10%
EN-14/24
When fans are built in a plenum, it is required to measure the differential
pressure between the static pressure in the plenum on the suction side and
the pressure at the inlet cone.
To ensure that the static pressure to be measured at the inlet nozzle is not
distorted by dynamic velocities, it is recommended to attach a ring-line of
measuring points on the wall as shown in the following diagram.
When using a differential pressure sensor, the signal can be used for
automatic control purpose.
For calculation of the flow rate a calibration coefficient (K-factor) for every fan
required this is determined by comparative measurement on a standard test
rig with none disturbed air flow at suction.
RLM E6- E3-G6 Calibration factor K10 RLM 56- 55-
2225 73 m²s/h
2528 79 m²s/h
2831 94 m²s/h
3135 106 m²s/h
3540 128 m²s/h
4045 155 m²s/h
4550 190 m²s/h
5056 242 m²s/h
5663 310 m²s/h
6371 385 m²s/h
7180 490 m²s/h
8090 628 m²s/h
9010 794 m²s/h
1011 1017 m²s/h
7.6 Install Protection Devices
1. Fit guards to protect exposed inlet openings (EN ISO 13857).
2. Design safety devices in such a way that they prevent objects from being
sucked in or from falling in (see EN 60529).
Calibration factor K10
2528 73 m²s/h
2831 90 m²s/h
3135 105 m²s/h
3540 120 m²s/h
4045 150 m²s/h
4550 190 m²s/h
5056 240 m²s/h
5663 300 m²s/h
6371 385 m²s/h
7180 485 m²s/h
8090 620 m²s/h
9010 790 m²s/h
1011 1000 m²s/h
1112 1260 m²s/h
1540 m²s/h
1214
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