ACS contsys Thermocont TS4S, Руководство пользователя

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3 Installation
The correct function of the device within the specific technical data can only be guaranteed, if
the permitted process and environmental temperatures (see chapter „Technical data“) will not be
exceeded.
3 .1 Installation place
The choice of the place of installation of the sensor and the length of the sensor tube are of
considerable importance for the quality and the reliability of the measuring results.
If the sensor isn’t installed deeply enough, an error in the measured temperature can occur because of
the different process flow temperature at the pipeline wall and the heat transfer along the sensor tube.
The appearance of the error should not be ignored if a considerable difference between process
temperature and environmental temperature exists.
Thus it is suggested to use an installation length of at least 80...100 mm.
The shorter the installation length, the greater is the deviation against the real medium temperature
caused by the heat transfer.
The following general recommendations can be applied as approximately guideline:
• In liquids, the sensor tube length should be 5...6 times greater than the diameter of the
sensor tube plus the sensitive length of 50 mm.
•
In steam, air and gases, the sensor tube length should be 10...15 times greater than the
diameter of the sensor tube plus the sensitive length of 50 mm.
In pipelines with small diameter the tip of the sensor tube should reach the axis line, that means the
middle of the pipeline, and if possible additionally a little more.
By isolating the external parts of the sensor, the effect caused by too low installation depth, can be
reduced.
An additional solution for optimizing the measurement quality of small formatted pipelines could be
the installation of the sensor tube diagonal to the pipeline longitudinal axis or the installation of the
sensor tube in the pipeline arc.
A) In the pipe arc against the flow direction
B) In small pipes diagonal against the flow direction
C) Vertical to the flow direction
At a horizontal installation, especially in hygienic applications, the probe should be installed with a
decline against the horizontal of minimum 3°, to ensure a self-emptying.