Chapter 4
– Service, Configuration & Testing
26
FT742-DM (4-20mA)
– Sensors
- User Manual
o
Check that the sensor has the latest version of software (please contact FT Technologies for more
information on latest software releases)
o
Check that the heater set point is at least 30
°
C (see Section 2.3).
o
Ensure that a suitable method of averaging is applied. Either using the internal filtering on the
sensor (see Section 2.2.2) or using an external data controller
•
Check that the wind sensor data and status flag errors are being processed in accordance with
guidelines in Sections 2.2.1 and 2.2.6.
•
Check that the measurement cavity’s special coating is in a satisfactory condition. Debris can be blown
out or washed out with distilled water spray.
Please contact FT Technologies for further information and advice if required.
4.3 Returns
If a sensor appears to be faulty, compile a detailed fault description, then contact FT Technologies to request a
Returns Materials Authorisation (RMA) form. Please complete the form and return as instructed. Returns
cannot be accepted without prior approval via this authorisation form.
Any units damaged by lightning or opened by the customer cannot typically be repaired, however an inspection
fee may still apply.
