4
5
6
Appendix 1: Drilling Procedure
Choose a flat spot on the top of the tank.
Use a 45.5mm tapping drill to drill a 1 ½” BSP hole on the surface of the
tank.
Place the foam gasket over the hole followed by the mounting adaptor.
Tighten on to tank with 2 stainless steel self-tapping, counter sunk
screws, supplied. Do not over tighten!
Screw the sensor into the adaptor. Ensure that the sensor is vertical
on the tank and screwed correctly into the base and that the threads
have not crossed, to give a secure seal
Appendix 2: Waveguide
Note:
The default sensor configuration is non-waveguide mode and the
measurements will be inaccurate unless a waveguide configuration mode
is used.
Source a suitable pipe to act as the waveguide. This pipe should
conform the dimensions in the figure below in order to fit the sensor.
The recommended pipe material is PVC (domestic waste pipe is often
used). Other materials are possible but should be checked for
chemical resistance to fuel oil.
Cross-section of waveguide pipe assembly:
The pipe should be cleanly cut to length. The length required should be
measured from the top of the tank (where the sensor is to be mounted)
to that of the fuel outlet point (as shown).
Note:
The bottom of the pipe should be a minimum of 5cm from the
base (floor) of the tank to prevent it from touching in the case of tank
dimensional changes due to temperature etc.
The waveguide pipe should be securely attached via the two grub
screws and hand tightened with an M1.5 Allen key (Note: over-
tightening the grub screws can damage the plastic). Care should be
taken to keep the sensor and pipe vertically aligned and supported,
while fitting during the installation.
Note
: Depending on the weight, length and surface finish of the pipe, it
may be necessary to glue it into position. In this case a hole should be
drilled near the top of the waveguide pipe, just below the adapter, to
ensure that any trapped air can exit.
Insert the correctly sized rubber seal ring, as required for the tank
opening (supplied), and position it on the face of the adapter that
is screwed onto the top of the tank.
Insert the whole assembly carefully into the tank, taking care not to
loosen the pipe, and fit into position. Hand tighten the assembly
until the rubber seal locks into position.
For more information on the Tekelek Ultrasonic 4G NB-IoT/CAT-M1 sensor
please visit our website www.tekelek.ie where a link to our YouTube page
can also be found.
9-5956-02
