TITANUS
MICRO·SENS
®
Design
06/13
95
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:
Air sampling hose Factor b
Type SCH-PG16 1,1
Type SCH-P25 0,5
Example 1: Altogether, the air sampling hose of type SCH-PG16 with a
length of 12 m shall be connected to a TITANUS
®
air sampling smoke de-
vice. The allowed total length of pipe is 50 m. The result for the maximum air
sampling pipe inclusive air sampling hose is:
Air sampling pipe length = 50 m - (12 m * 1,1) = 36,8 m
Example 2: In case of a pipe project planning, 45 m of air sampling pipe and
air sampling hose shall be connected to a TITANUS
®
air sampling smoke
device. In accordance to the project planning scale, the allowed total length
of pipe can be 50 m for the complete pipe project planning. The result for the
maximum length of the complete air sampling hose of type SCH-P25, which
can be integrated within the pipe project planning, after formula adjustment
is:
Length of the air sampling hose = (Total pipe length - Air sampling pipe lenght) / Factor
b
Length of the air sampling hose = (50 - 45 m) / 0,5 = 10 m
5.3.5
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