MST-91Ai Installation guide EN Rev 1.0
7
Installation and connection of sensors
Correct placement of sensors is particularly important for the correct operation of the system.
Temperature sensor Grand Meyer TS-1 (TS)
The temperature sensor can be used for the following measurements:
• ambient temperature.
• temperature of the heated open area (screed, soil).
• surface temperature of the pipe (tank).
Technical characteristics of the temperature sensor TS
Temperature measuring range
-40
º
C…+120
º
C
A type
analog
Temperature accuracy
± 1.0
º
C
Active sensor element
NTC (12 кOhm at +25
º
C)
Sensor Cable Length
3m
Maximum cable extension length
100m
Extension cable
2-wire, with copper conductors 0.75mm²
Overall dimensions of the sensor
Ø
6mm x 30mm (length)
Weight
100g
The weather station should be connected according to the connection diagram.
Power supply wires should not be located near the sensor cable, as they can interfere. If necessary,
shorten or extend the sensor cable. To connect the sensor cable, use a mounting box with a terminal
block or sets with heat-shrink tubing.
Installing an ambient temperature sensor
The ambient temperature sensor (DT) should be installed inside an empty installation box with a
degree of protection of at least IP65, which can be mounted both on the building itself and on the roof
elements. For a more accurate indication of the ambient temperature, the box with the sensor is
mounted in the places that are most protected from sunlight, outside the range of exhaust ventilation,
attic, etc.
Installation of a temperature sensor for a heated open area (screed, soil)
The temperature sensor of the heated open area (screed, soil) should be mounted in the middle
between the turns of the heating cable at a distance of 40-60 cm from the boundary of the beginning
of the heating circuit. The sensor cable is drawn inside a steel plugged pipe at the end of the pipe or
inside a corrugated tube made of self-extinguishing PVC Ø 16-25mm and connected to the weather
station through an intermediate mounting box.
