WARNING When performing
installation and maintenance procedures at the roadside, follow local and state
legislation and regulations for road safety.
CAUTION Do not bend the sensor when handling it.
Follow the local regulations regarding the installation material and process.
To prevent the pavement from breaking and affecting the measurements, do not install
other embedded sensors close to TPS10. Leave at least 1 meter (3 feet) between the slots cut
into the pavement.
Protect the cable and the electronic unit from mechanical stress, sharp stones, and standing water. For the installation, you need the following:
Suitable drilling equipment for cutting an opening in the road surface material and drilling a hole into the ground.
If the ground is too soft for the sensor hole walls to hold, you need to protect the sensor with, for example, a plastic tube. The internal diameter of the tube must be at least 32 mm (1.26 in).
Protective material for the electronic
unit.
Water, filler sand, and other filling
material and equipment, depending on the local regulations.
Install TPS10 inside the structure to be
measured, for example, the road structure. Select the machinery and tools used according to
the structure and the site conditions. See also FinMeas Temperature Profile Sensor
TPS10 Operating Manual.
TPS10 components
1
Electronic unit
2
Cable
3
Top sensing element (marked with yellow tape)
4
TPS10 sensor
5
Bottom sensing element
Example of TPS10 installation
slot
Make an opening to the surface material.
The minimum size of the opening is 20 × 20 cm (7.87 × 7.87 in). This allows for drilling the sensor hole into the layers below.
Make a groove for the cable.
The diameter of the cable groove needs
to be 20 ... 30 mm (0.79 ... 1.18 in).
If you are not installing the electronic unit in the same opening as the sensor, make
the groove wide enough to fit the electronic unit as well.
Drill a hole for the sensor to the desired depth.
Plan and perform this step according to
the structural layers and the length of the sensor.
The top of the sensor must reach the
desired depth.
The recommended minimum diameter for
the hole is 25.4 mm (1 in), but usually the hole must be wider. The wider the hole,
the easier it is to fill.
If you are using a protective tube, insert the sensor carefully inside.
Lower the sensor or the tube into the hole.
Pour filler sand into the hole and the tube, if used, while holding the sensor in the correct position.
Adjust the vertical position of the
sensor so that the top sensing element lies at the desired height. The measurement point
for installation depth is marked with the yellow tapes. The bottom sensing element is
located 51 mm (2 in) from the bottom of the sensor.
When there is enough filler sand to hold the sensor securely in place, pour water and
filling material alternately into the hole.
Water helps in compacting the filler
material.
Install the electronic unit underground next to the road. If there is room, bury the
excess cable in the same hole.
To protect the electronic unit and to
keep it in place, pour filler sand around it.
CAUTION Do not submerge the
electronic unit into water for long periods of time (maximum of 4 weeks).
Seal the road surface opening according to the local rules and regulations.
Write down the installation place and installation depth. This is needed for the metadata in the Web UI.