CONDUCTOMETER Russian patent published in 2015 - IPC G01R27/02 G01N27/00 

FIELD: measurement equipment.

SUBSTANCE: conductometer comprises an alternating voltage generator (1), the outlet of which is connected to a reference inlet of a converter (2) code-voltage and to a transformer differential conductometric converter (3). The transformer converter (3) comprises the first (4), second (5) and third (6) transformers, the first communication element (8), covering cores of the first (4) and third (6) transformers, and the second communication element (11), covering cores of the second (5) and third (6) transformers. It also comprises the first wire communication winding (9), between the first (4) and third (6) transformers, the outlets of which are connected to the first terminal block (14), and the second wire communication winding (12), between the second (5) and third (6) transformers, leads of which are connected to the second terminal block (15). The first lead of the first winding (7) of the first transformer (4) is connected to the outlet of the alternating voltage generator (1), the reference inlet of a synchronous detector (17) and the reference inlet of the converter (2) code-voltage, the outlet of which is directly connected to the first lead of the first winding (10) of the second transformer (5). The control inlet of the converter (2) code-voltage is connected to the outlet of a control unit (18). The first lead of the first winding (13) of the third transformer (6) is connected to the inlet of a selective amplifier (16), the outlet of which is connected with the control inlet of the synchronous detector (17), the outlet of which is connected in series with a control unit (18), a microcontroller (19) and a digital indication device (20). The second leads of the first windings of all three transformers are connected to the common bus of the device.

EFFECT: increased accuracy of measurement and expansion of functional capabilities, possibility of precision measurement of active conductivities and resistances.

1 cl, 2 dwg