SU15645A1 - Hair Hygrometer - Google Patents

Description

The main patent No. 14512 describes a method for measuring values depending on the physical properties of liquids, gases, vapors, etc., which consists in the fact that a suitably tensioned electrically conductive string surrounded by the liquid, gaseous or vapor medium under investigation and included in The branch of the Whitston's Bridge, or Thomson's double bridge, or in the differential galvanometer circuit, is placed in a constant or alternating magnetic field, and with a constant magnetic field, the circuit is fed an alternating current. Tnom field feed circuit constant or variable current.

In FIG. 1 depicts the proposed hair hygrometer; FIG. 2- modification of it.

In the proposed hair hygrometer (Fig. 1), the hair 2 of the hygrometer is connected to the string 1, tensioned between the poles W, S of the magnet or electromagnet and connected to the circuit of the Whitston double bridge

bridge Thomson or differential galvanometer, with the galvanometer is equipped with a scale, graded in percent relative humidity.

To measure small fluctuations of humidity, it is proposed (Fig. 2) to string 1 placed in a magnetic field to arrange a pull hair 2 in its middle part and to supply it with a counter spring 3.

Since the lengthening of a hair does not depend on the temperature, but directly correspond to the relative humidity, the galvanometer scale should not be subject to any amendments.

The subject of the patent.

1. A hair hygrometer, characterized by the fact that in order to measure moisture by changing the length of a hair according to the method described in A. Ulitovsky patent No. 14512, a hair 2 of the hygrometer is connected to a strung 1 stretched between the poles of an N, S magnet or

an electromagnet and a Whitston bridge, a Thomson double bridge or a differential galvanometer, the galvanometer is equipped with a scale graduated as a percentage of relative humidity (Fig. 1).

2. Modification of the hygrometer described in paragraph 1, characterized in that the string 1 placed in a magnetic field is arranged as a pulling thread 2 in its middle part and provided with an opposing spring 3 (Fig. 2),

1.

2.