Abstract

Apparatus for installing a condition-sensing element or the like in a heat exchanger, such as a radiator, comprising an elongated probe containing the sensing element, and a device securing the probe in a space defined between two adjacent cooling fins in the heat exchanger. The latter device comprises an elongate member dimensioned for insertion through one of the interfin spaces, and a pair of retention elements attached to either end of the elongate member. The retention elements have apertures for receiving the probe when the probe is inserted through an inter-fin space proximate the space through which the elongate member is inserted. The retention elements are lockable into a position of engagement with either side of the heat exchanger, and, when so locked in position, capture the probe so as to retain it in place. The retention elements are dimensioned to block the flow of air through the inter-fin spaces adjacent to the probe.