MULTICAL® 403
Kamstrup A/S · Technical description · FILE100000166_B_EN-55121689_M1_07.2023
9.2 Cable effect
For smaller and medium-sized heat meters, there is often only a need for a relatively short cable length to the
temperature sensors which is why 2-wire temperature sensor sets can be used with advantage as the short cable
only contributes to a minor increase of the shown absolute temperature.
The cable length and the cross section must always be the same for the two temperature sensors that are used in a
temperature sensor set for a heat meter, and the delivered length must not be either shortened or extended.
The limitations, which are related to the use of 2-wire temperature sensor sets in accordance with EN 1434-2, are
shown in the table below.
Cable cross
section [mm
2
]
[m]
[K/m]
°
Table 6
Kamstrup A/S supplies Pt500 sensor sets with up to 10 m cable (2 x 0,25 mm
2
)
9.3 Installation
9.3.1 Identification of inlet and outlet temperature sensors
To make it easier to carry out a correct installation, the inlet temperature sensor is equipped with additional two
white markings on the cable by which you can easily identify which of the two temperature sensors is the inlet
temperature sensor. One of the white markings is placed right after the temperature sensor itself, see the figure
above, which makes it easy to check if the inlet temperature sensor is installed in the inlet pipe. The other white
marking is placed at the end of the cable, see the figure below, and can, in connection with reverification, be used
for checking that the temperature sensors have subsequently been are mounted correctly in the calculator.
Identification of inlet and outlet temperature sensors can likewise be seen from the attached sign on the
temperature sensors.
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