User manual
AHHYTM_E2.2.1
10/23
Application Note
Humidity Module
HYT
Mechanical Dimensions
Pin Assignment
bottom view
1 2 3 4
SCL VCC GND SDA
3.1 Mounting Instructions
The media compatibility of the sensor, housing and sealing materials are to be checked and kept suitable as per the
application. The housing and the assembly must be so constructed that it can withstand the application pressure
multiplied by the factor of safety. In case of dynamic applications in the upper pressure range, an additional extra
factor is to be taken into account for the material fatigue. The assembly must be done stress free. This should
remain valid for the entire temperature range, considering the different coefcients of expansion between the
sensor housing and the opening. The support from top may be provided only in the boundary area. The upper
mounting ring must rest upon at.
3.2 Sealing Rings
The most frequent error in case of a pressure resistant assembly is the loss of sealing. Therefore, this is the point
where high attention is to be given. Standard sealing rings in the form of O-rings are available in the market, which
are offered by different manufacturers. A typical dimension is, for example, 7 x 1 mm. The material is dependant on
the application, hence due to qualitative reasons, high grade options of VITON or FPM are recommended, which are
also resistant to ageing and temperature exposure.
3.3 Construction Recommendations
These recommendations for construction are to be understood only as an assistance for your own construction. The
dimensioning of the components in each case is to be decided suiting to the application and checked. Please also
consider the tment and application guidelines of the O-ring manufacturer.