SU1746254A1 - Viscometer - Google Patents

Abstract

The invention relates to ball viscometers and can be used to measure the viscosity of liquid media. A viscometer consists of a vessel, a ball, sensors for the ball's upper and lower position, and a measuring circuit for the ball's fall time, which contains the OR element, a counting trigger, a pulse generator, a key, and a counter. In this case, the measuring scheme of the ball falling time is made in the form of a series-connected pulse generator, a key and a counter, and the control input of the key is connected to the trigger output, to the counting input of which, via the OR element, sensors 1 are connected

Description

The invention relates to ball viscometers and can be used to measure the viscosity of liquid media.

A viscometer is known which contains a cylindrical vessel for the liquid to be tested, a ferromagnetic ball and a measuring scheme for the time of the ball falling.

Closest to the proposed technical entity is a viscometer containing a cylindrical vessel for the test liquid, a ferromagnetic ball and a measuring scheme of the ball falling time, made in the form of a series-connected high-frequency oscillator with a divided circuit, a band-pass filter, a square pulse former, a counting trigger, electronic millisecond and microprocessor.

However, the known viscometer is complicated in construction.

The purpose of the invention is to simplify the design.

This goal is achieved by the fact that the measuring scheme of the ball falling time is made in the form of serially connected pulse generator, a key and a counter, and the key control input is connected to the trigger output, to the counting input of which sensors are connected through the OR element.

The drawing shows a structural diagram of the proposed viscometer.

The viscometer consists of a vessel 1, a ball 2, a sensor 3 of the ball's upper position, a sensor 4 of the ball's lower position, an OR 5 element, trigger b, a pulse generator 7, a key 8 and a counter 9 The vessel 1 is made of a non-magnetic material, such as glass, and the ball 2 - from ferromagnetic material, for example permallo

As sensors 3 and 4, the upper and lower ball positions are used.

inductive sensors. The element OR 5, the trigger Q, the pulse generator 7 and the key 8 are made on the K155 series of microcircuits.

As the counter 9, an electric pulse counter is used.

Ball 2 is inside the vessel 1, on which sensors 3 and 4 are installed, which are connected to the counting input of trigger 6 via the OR 5 element. Pulse generator 7 is connected to pulse counter 9 via pulses 8, and control input 8 is connected to output trigger 6.

The viscometer works as follows.

The test liquid is poured into the vessel 1 and viscometric is included. The key 8 in the state is closed. The generator 7 generates pulses that are not fed to the counter 9, since the key 8 is closed. When the vessel 1 is turned over, the ball 2 moves in the test liquid. When the ball 2 passes by the sensor 3 of the ball's upper position, an impulse appears at the sensor output and enters the input of trigger 6. At the output of trigger 6, a signal appears that opens key 8 and pulses from the generator 7 begin to flow to the counter 9. With the passage of the ball 2 past the sensor 4 the lower position of the ball at the output of the sensor in

Z - CH

with

WITH

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Editor N.Lazarenko

Compiled by I. Pavlenko

Tehred M.MorgentalKorrektor E.Papp

The pulse that enters through the element OR 5 at the input of trigger b is returned and returns to its initial state. At the same time, at the output of the trigger 6, the signal disappears, the key 8 closes and the flow of pulses from the generator 7 to the counter 9 stops. The number of pulses counted by the counter 9 is judged on the viscosity of the test liquid.

Thus, a simple viscometer provides a process for measuring viscosity.

Claims (1)

Claims of Invention A viscometer comprising a cylindrical vessel for the test liquid, a ferromagnetic ball and a measuring circuit including sensors for the ball's upper and lower positions and a trigger, differing in that, in order to simplify the design, the measuring circuit further comprises an OR element whose inputs are connected to the ball top and bottom position sensors, pulse generator, key, information input of which is connected to pulse generator, pulse counter, input of which is connected to the key output, p When in use, an output of OR connected to the input of the flip-flop and its output connected to the control input of the key.