The ALTF2 is a pipe-laying resistance thermometer with clamping band and terminal box made of impact-resistant plastic with a lid equipped with quick release screws (slot/cross). The ALTF02 is a pipe-laying resistance thermometer with tension band and connection box made of impact-resistant plastic with clamping lid. Surface temperature probes THERMASGARD~ ALTF2 / ALTF02 are electrical contact thermometers, for measurement of surface temperatures on solid objects that have at least a so-called contact surface, which is brought into contact with the surface to be measured. The surface temperature sensor records the temperature of the medium flowing in the pipe (e.g. water) via the surface temperature. These sensors are used to measure temperatures on pipes, tubes (e.g. cold and hot water) or on heating pipes for temperature control.