초록 ▼

A heat stress monitor comprised of a thermometer tube having at least a black globe-bulb and a wet-bulb therein and adapted to provide a direct reading of wet-bulb globe temperature (WBGT). The inclusion in the tube of a dry-bulb makes the monitor particularly adapted to measuring WBGT outdoors. The

A heat stress monitor comprised of a thermometer tube having at least a black globe-bulb and a wet-bulb therein and adapted to provide a direct reading of wet-bulb globe temperature (WBGT). The inclusion in the tube of a dry-bulb makes the monitor particularly adapted to measuring WBGT outdoors. The thermometer tube is in the form of a single tube and the bulbs are disposed in series therein with an extension part extending beyond the bulbs to permit a direct reading to be taken of the position of a thermally responsive medium in the tube.

대표청구항 ▼

A heat stress monitor comprising a thermometer tube shaped generally in a shallow U configuration and having a black globe-bulb on one free arm thereof and a wet-bulb on the other free arm thereof, there being an interconnection across the base of the U between the bulbs so as to connect said bulbs

A heat stress monitor comprising a thermometer tube shaped generally in a shallow U configuration and having a black globe-bulb on one free arm thereof and a wet-bulb on the other free arm thereof, there being an interconnection across the base of the U between the bulbs so as to connect said bulbs in series, a black globe for receiving the black globe-bulb and means capable of moistening the surface of the wet-bulb, the thermometer tube being adapted to provide a direct reading of wet-bulb globe temperature, and a common thermally responsive medium in the tube which medium extends from the wet-bulb through the tube into the black globe-bulb and beyond said black globe-bulb into an extension part of the tube which extends substantially parallel with the base of the U and is provided to permit a reading to be taken of the position of the thermally responsive medium, the internal volumes of the black globe-bulb and the wet-bulb being respectively proportional to the percentages of the black globe temperature and of the wet-bulb temperature required for determining the wet-bulb globe temperature whereby the position of the thermally responsive medium is indicative of the wet-bulb globe temperature.