Measuring temperature 29.02.2020 09:39 29.02.2020 09:39

In order to measure the floor temperature (to regulate water and electrical floor heating systems), you can use a cable temperature sensor connected to the system analogue inputs, e.g. to the analogue input of the temperature sensor or the wall-mounted heating controller.

The temperature sensor should be placed in a protective plastic tube of sufficient diameter (about 10 mm), which must be embedded and flush-mounted in its base; it is placed at least 0.5 m from the edge of the floor, not too close to the heating element (see the relevant assembly instructions of the underfloor heating systems).

 

For an example of connection see e.g. the CFox wall-mounted temperature sensor C-IT-0200R-design.

The cable temperature sensor can be used for contact temperature measurements of liquid, solid or gaseous substances, e.g. the solar heating circuits, the water temperature in the storage tank, etc. In addition to measuring the floor temperature, it is used for measuring the temperature in the tanks of heating systems, and it can also be used for measuring the temperature in the piping, by thoroughly attaching the sensor to the pipe and carefully insulating it. Its main component is the temperature sensor itself, which is placed in a metal casing and its terminals are connected to the power cord. The temperature range in the table applies for the sensor itself and for the power cable. If the cable is equipped with shielding, this shielding is not connected with the case or with any other wire of the sensor.

 

The standard scanners are equipped with 12k NTC sensors in the version up to 80 °C and up to 125 °C, also with the Pt1000 (3850 ppm) and Ni 1000 (6180 ppm) sensors. The standard lengths are listed in the price list, and other variants of cable sensors or different cable lengths are custom-made on request. The following table specifies the basic electrical and mechanical parameters of commercially available sensors:

 

Order number

SK8NTC12k-2PS-xx

SK8NTC12k-2SN-xx

SK2PA-2SS-xx

SK8S-2PS-xx

Temperature sensor

NTC 12k

NTC 12k

Pt1000

Ni1000/6180ppm

The temperature range

-30 ÷ +80 °C

-50 ÷ +125 °C

-40 ÷ +200 °C

-30 ÷ +80 °C

An example of usage

floor sensor

water temperature in the tank

Solar hot water system

floor sensor

The power cable

0.34 mm2

0.5 mm2

0.22 mm2

0.34 mm2

The wire insulation

PVC

silicon

silicon

PVC

Cable

LiYCY 3x0,34 mm2

MC-ECS 3x0.5 mm2

MCBE-AFEP
2x0.22 mm2

LiYCY 3x0.34 mm2

Shielding

yes

NO

yes

yes

Insulation of the lining

PVC

silicon

silicon

PVC

Casing

galvanized brass

galvanized brass

stainless DIN 1.4301

galvanized brass

Ø = 6.8 mm

Ø = 6.8 mm

Ø = 6 mm

Ø = 6.8 mm

length 25 mm

length 25 mm

length 60 mm

length 25 mm

xx – the length of the cable in meters (for standard supplied lengths see the price list)