SU1041876A1 - Level indicator - Google Patents

Abstract

A LEVEL SIGNALIZER, containing a glass, a siphon tube with two connections, one of which is connected to the glass, and a sensor, is installed in the same way as the low level sensor. a pipe connected to the cup, and the end of the second pipe is located behind the lower measured level.

Description

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This invention relates to automatic liquid level control.

A device is known comprising a cup, a siphon tube with two nozzles and a sensor for detecting the upper level of the liquid l.

However, this device cannot be used simultaneously to control a lower-level liquid.

The aim of the invention is to provide the possibility of measuring the lower level.

The goal is achieved by the fact that in a device containing a glass, a siphon pipe with two pipes, one of which is connected to the glass, and a sensor, a sensor is installed in the pipe connected to the glass, and the end of the second pipe is located behind the lowest measurable level.

The drawing schematically shows the proposed device.

The tank 2 is built into the tank 1 with a controlled liquid in such a way that its open section is located at the upper limit level. The inner cavity of the cup 2 is connected via an upper limit to the reservoir 1 by means of a siphon tube consisting of an inlet 3 and an outlet 4 nozzles, the end of the nozzle 4 is at a lower controlled level. The sensor 5 of the level indicator is located in the nozzle 3 in the zone bounded by the difference in the level of the liquid in this nozzle when the liquid in the reservoir 1 reaches the control limits.

The working height of the glass 2 and the zone of possible installation of the sensor 5 in

the inlet 3 is calculated by the formulas,, h S2-S,. & h-

 P6, -S., 4Sj-S, 5, .S, i.

 5g11r (, ee-in,) XB

e, ts, iSi)

ho uh

working height of the glass;

where is the difference of controlled prdel;

Si is the internal cross-section of the inlet;

Srt internal cross section of the outlet;

s, internal cross-section of the glass;

Xi is the lower boundary of the sensor installation zone;

Xn is the upper boundary of the mouth zone. new sensor.

The operation of the device is carried out in a simple manner.

The filling tank 1 liquid at the top level fills the glass

2 and inlet 3. Sensor 5, after being in a liquid, turns off the liquid podac. When the level is lowered, a siphon effect occurs, pumping the liquid from the glass .2 through the inlet 3 into the reservoir 1. When the lower limit level is reached, the liquid from the inlet

3 drains into the glass 2, and the sensor 5, rubbed into contact with the liquid, generates a signal.

The technical & economic effect of using the proposed device is expressed in savings, which (can be achieved by using it simultaneously to measure both the lower and upper levels.,

Claims (1)

A LEVEL SIGNAL containing a glass, a siphon pipe with two nozzles, one of which is connected to the glass, and a sensor, so that, in order to enable measurement of the lower level, the sensor is installed in the pipe, connected to the glass, and the end of the second pipe is located behind the lower measured level.