Vaisala PTU300 - Manual (Page 197)

Appendix A __________________________________ Probe installation kits and installation examples
VAISALA _______________________________________________________________________ 195
APPENDIX A
PROBE INSTALLATION KITS AND
INSTALLATION EXAMPLES
Duct installation kits (for PTU303/307)
Duct installation kit includes a flange, a sealing ring, a supporting bar
and probe attaching part for the probe and screws for attaching the flange
to the duct wall. Vaisala order codes: 210697 (for PTU303 and PTU307),
and 215003 for temperature probe.
0508-021
Figure 86 Duct Mounting Installation Kit
The following numbers refer to Figure 86 above:
1 = Duct wall
2 = Flange
3 = Sealing ring
4 = Supporting bar
5 = Probe attaching part (to be fixed with the supporting bar)
6 = Relative humidity probe
NOTE When the temperature difference between the duct and the air outside the
duct is remarkable, the supporting bar must be installed as deep in the
duct as possible. This prevents errors caused by the heat conduction in
the bar and cable.