TITANUS
PRO·SENS
®
Design
06/13
99
Project design with air sampling hose
The application of an air sampling hose can be useful if several direction
changes on a short distance of a pipe system is required, e.g. for avoiding
any obstacles.
As the transport time can be manipulated negatively by application of an air
sampling hose, the influence of the used air sampling hose is to be deter-
mined on the allowed total length of pipe as follows.
Consideration during application of air sampling hose:
For calculation the maximum length of air sampling pipe with air sampling
hose, the length of the air sampling hose must be multiplied by the certain
factor b and deducted from the allowed total length of pipe.
Air sampling pipe length = Total pipe length – (Length of the air sampling hose * Factor
b)
Factor for calculation of the air sampling hoses length:
Fan voltage Factor b
6,5 V 0,9
6,9 V 0,6
>= 9,0 V 0,7
Fan voltage Factor b
6,5 V 0,3
6,9 V 0,3
>= 9,0 V no effect
Example 1: Altogether, the air sampling hose of type SCH-PG16 with a
length of 22 m shall be connected to a TITANUS
®
air sampling smoke device
with a fan voltage of 6.9 V. The allowed total length of pipe is 120 m. The re-
sult for the maximum air sampling pipe inclusive air sampling hose is:
Air sampling pipe length = 120 m - (22 m * 0,6) = 106,8 m
Example 2: In case of a pipe project planning, 100 m of air sampling pipe
and air sampling hose shall be connected to a TITANUS
®
air sampling
smoke device with a fan voltage of 6.5 V. In accordance to the project plan-
5.3.7
Air sampling hose type SCH-
PG16
Air sampling hose type SCH-
P25
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