TEMPERATURE MONITORING APPARATUS FOR A STEAM TRAP
A monitoring apparatus for monitoring the temperature of a body, said apparatus comprising a housing defining a volume of air exposed to said body, a temperature sensor being located within said volume of air at a position remote from said body whereby the temperature of the body can be determined from the output of the temperature sensor. In one embodiment said housing defines a substantially vertically arranged flue exposed at its lower end to said body, said temperature sensor being located within said flue, at least one air inlet being provided in said flue at a position below said temperature sensor, at least one air outlet being provided in said flue at a position above said temperature sensor, whereby said body, when heated, may initiate a rising column of air within the flue due to convection when the temperature of the body is greater than the ambient temperature, said temperature sensor being exposed to said rising column of air.