Dr. Födisch
Umweltmesstechnik
AG
4 Installation
Version 3.0
Operation manual PFM 92 C
Page 13 of 30
4 Installation
4.1
Selection of the measuring point
WARNING
Risk of measuring failures.
The point of installation of the weld-in sleeve must be grounded Therefore the
weld-in sleeve has to be integrated into the local potential equalisation!
The place of installation of the probe has to meet the requirements of local valid
guidelines (e.g. EN 13284-1, in Germany: VDI 2066 page 1). In case of doubts it is
recommended to let have determined the measuring point by a responsible measuring
institute (in Germany according to §§ 26/28 BImSchG). We recommend to realise at least
5 times the diameter of the exhaust gas channel as entry and exit section.
Right!
Wrong!
< 5 x D
Right!
2 x D
5 x D
VDI 2066 pg. 1
EN 13284-1
VDI 2066 pg. 1
EN 13284-1
5 x D
VDI 2066 pg. 1
EN 13284-1
5 x D
Fig. 4.1:
Entry and exit section
Basically it has to be considered that the dust and smoke gas distribution must prevail as
homogeneously as possible at the measuring point in order to get a representative
measurement of the dust content across the channel cross – section.
WARNING
Risk of measuring failures.
The probe profile should be protected against rain falling down!
