Standard ventilating psychrometer

Abstract

The invention discloses a standard ventilating psychrometer. A dry bulb thermometer, a wet bulb thermometer and a water supply cooling device are correspondingly arranged on three air flues of a ventilating structure body, a dry bulb radiation protection jacket, a wet bulb radiation protection jacket and a sleeve pipe radiation protection jacket are respectively jacketed out of the dry bulb thermometer, the wet bulb thermometer and the water supply cooling device, the radiation protection jackets are connected with the ventilating structure body together through insulating connecting pipes; the water supply cooling device comprises a stainless steel sleeve, a first filling jacket, a second filling jacket, a third filing jacket, an insulator and a water storage container, wherein the first filling jacket is arranged on an outer wall of the stainless steel sleeve, the second filing jacket is clung to an inner wall of the stainless steel sleeve through the insulator, and the third filling jacket is arranged on an outer wall of the wet bulb radiation protection jacket; diversion lines led out by the filling jackets are immersed in the water storage container, an extension section led out through the second filling jacket is integrated with a water bulb filling jacket arranged on the wet bulb thermometer so that the water bulb filling jacket is capable of filling water through the second filling jacket. The standard ventilating psychrometer disclosed by the invention is capable of achieving the level that the measurement error is less than + / -1%RH.

Description

technical field [0001] The invention relates to a standard ventilating psychrometer, in particular to a standard ventilating psychrometer adopting the dry-wet bulb method. Background technique [0002] The dry wet bulb method plays an important role in the humidity measurement method, and the standard ventilated psychrometer of the dry wet bulb method has long been used as the standard for verifying other hygrometers. The current standard ventilated psychrometer mainly has two problems that have not been well resolved. One is the problem that the water temperature of the wet bulb water supply is different from the wet bulb temperature, and the other is the problem that the temperature of the radiation protection cover is different from the wet bulb temperature. These two problems are two important sources of measurement errors of standard ventilation psychrometers, and are also two important reasons why the measurement accuracy of standard ventilation psychrometers cannot be...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the water temperature of the wet bulb water supply is different from the wet bulb temperature and the problem that the temperature of the radiation protection cover is different from the wet bulb temperature, and provide a standard ventilated psychrometer with significantly improved measurement accuracy

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