Section 1
Introduction
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FT702LT/D Flat Front Wind Sensor Manual
1.2 Build Versions and Labelling
Each time a substantial revision is made to the design of the wind sensor the build version number is
incremented. All new variants are backwards compatible with the previous build versions. Each uses the same
mounting, connector pin outs and signal characteristics and contains all the original functions.
Where a new function has been introduced the first build version to have it included is stated.
Figure 2 shows examples of
how to identify an FT702LT’s build version, individual serial number and wind
speed scaling (if applicable), depending on which main label is attached. Section 2.2.2 describes how you can
use the wind speed scaling reference to identify the calibration of the sensor.
Serial number
Build version
Wind speed scaling reference
Product label key*
*Additional labels may also be attached. Examples of older labels are included for reference.
Figure 2: Examples of Main Sensor Labels
Only sensors marked with the Intertek label conform to UL 61010-1 and are certified to CAN/CSAC22.2 No.
61010-1-04. Some early build versions do not have this certification.
1.3 Pipe Mount Sensor
It is possible to mount the wind sensor directly on top of a pipe. Details of the Pipe Mount sensor and system
can be found in a separate manual. The Pipe Mount sensor offers enhanced environmental sealing, lightning
protection, thermal conductivity and corrosion resistance. The base of the Pipe Mount sensor is different to the
Flat Front sensor’s described in this manual. Please contact FT Technologies for further information.
1.4 Scope of Use
The FT702LT/D is designed, manufactured and optimised for high availability. The FT702LT/D wind sensor
often attains 99.9% or better availability of wind speed and wind direction readings.
No promise in part or full can be given to guarantee an FT702LT/D wind sensor’s continuous operation, as
exceptional circumstances can occur that may result in the failure of the output from a sensor. Exceptional
circumstances can include;
Poor installation
Inadequate inspection
Power supply failures
