Section 3 Mechanical & Electrical Installation
13
FT742-SM (RS422 & RS485) Sensors
– User Manual
3 MECHANICAL & ELECTRICAL INSTALLATION
The FT742-SM has a surface-mounted design for installation on flat surfaces. The product range is optimised
for cost-efficient operation including the use of standard off-the-shelf cables.
The sensor uses an 8-way M12 connector. IP66 and IP67 ratings are achieved through the use of a
compression fit O-ring seal.
Ensure the airflow into the sensor is not obstructed or influenced by nearby objects.
See safety instruction requirements on pages 5 and 6.
The wind sensor installation must be properly designed to ensure the correct
operation of the sensor. This section is for guidance only. It is the responsibility of
the designer and installer to ensure that the installation and its design is fit for
purpose. Please see Disclaimer Section 1.4.
3.1 FT742-SM Sensors
3.1.1
Mechanical & Electrical Integration
The sensor measures the effects of airflow through the sensor cavity on a resonating acoustic signal. The
sensor can be rotated to ensure alignment with a standard reference, typically Magnetic North, or the integrated
compass can calculate this automatically.
Figure 3: The FT742-SM Sensor
The mounting surface should be smooth and flat. Textured, uneven or damaged surfaces will reduce the quality
of the water ingress protection.
