SU1303846A1 - Photocolorimetric liquid analyzer - Google Patents

Abstract

The invention relates to the field of analytical instrumentation and can be used to automatically control the degree of contamination. The invention makes it possible to reduce the measurement error with automatic control of the degree of contamination of the wastewater. In this device, containing a radiation source 1, an optical system 2, a flow measurement whose (L I X X g J-J 4 - :: -J 4: // b 7 th)

Description

ku 3 with the analyzed solution and the radiation receiver 5 with the registered instrument 7, the flow measuring cell 3 is made in the form of a vertically located cylinder, in the upper part of which there is an opening for communication with the atmosphere and bypass 12 for setting the level, in the lower part on the horizontal axis, intersecting the axial line of the measuring cell, an optical system is installed, with the lower and upper parts of

The invention relates to analytical instrumentation and can be used to automatically control the degree of pollution of wastewater. . The purpose of the invention is to increase the accuracy of measurements by eliminating the effect of contamination of the glasses of the optical system and simplifying the design by eliminating the system for preparing and supplying a stream of co-liquid.

The drawing shows a diagram of a photocolorimetric fluid analyzer

The device contains a radiation source 1, a lens 2, a flow measurement cell, a collecting cell 3, a collecting lens 4, a radiation receiver 5, an amplifier 6, a recording device 7. A flow cell consists of a constant level capacitor 8 with an input 9 and an output 10, nozzles 11, bypass 12 and drain 13. A constant tank is connected to the atmosphere by means of an aperture 14, and measuring cell 3 is connected to the atmosphere by

using holes around the perimeter of optical lenses 15.

The device works as follows.

The analyzed fluid enters through the inlet 9 into the constant level tank, where it rises and, before entering the nozzle 11, changes its direction by 180. Such movement contributes to the degassing of the liquid. The remaining bulk of the liquid through the outlet 10 goes into bypass 12. The diameter of the bypass is chosen so that the oscillator is separated by an impenetrable partition. Inside the cylinder, there is a coaxial tube, the upper end of which is located below the bypass level, and the lower end is completed with a nozzle 11 to form a free falling jet that crosses the horizontal axis of the optical system. The colorless performance of a photocolorimetric fluid analyzer eliminates measurement errors due to contamination of the glass cell. 1 il.

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No level exceeded i1 mm when the flow rate changed by ± 50%.

The balance part of the vessel, released from gas bubbles, with a constant flow enters the nozzle

11, where it acquires a laminar flow regime. With the aid of the nozzle 11, a smooth freely falling jet is formed, which intersects the modulated light beam from the radiation source 1. The degree of absorption by the jet of the luminous flux is converted by the receiver 5 into an electrical signal, amplified by the amplifier 6, recorded by the device 7, and is a measure of the concentration of the component being detected in the analyzed liquid. Air is sucked from the environment through the openings 15 due to the ejection created by the bypassing liquid and discharged through the mouth of the cell 3. This creates a direction of air opposite to the direction of the evaporating vapor. In this way . prevents fogging of the internal surfaces of optical lenses

2 and 4.

In order to avoid splashing in the cell from a free-falling jet, it strictly along the axis of the cell goes to drain 13 and meets with the main mass of the analyzed flow passing through bypass 12.

Claims (1)

Invention Formula A photocolorimetric fluid analyzer containing a radiation source located horizontally and 313 successively along the path of the optical system, a flow measuring cell with optical windows, which is hydraulically connected to the drain pipe, a radiation receiver, an amplifier and a recording device, as well as a constant level capacitance located above the measuring cell, with an input and output for the analyzed liquid and the nozzle to create a free-falling jet, located coaxially with a constant level perpendicular to optical Editor E. Sligan Compiled by N. Stukov Tehred L. Serdyukova Proofreader M. Pojo Order 1296/40 Circulation 777 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk nab, d. 4/5 Production and printing company, Uzhgorod, st. Project, 4 6 axes, four This is so that, in order to increase the accuracy of measurement and simplify the design, the analyzer is additionally equipped with a bypass, the input of which is connected to the output of a constant level capacitor, and the outlet with a drain pipe, The cell is connected to the atmosphere through openings that are located along the perimeter of the optical windows and the upper end of the nozzle is located in a constant-level vessel between the inlet and outlet of the liquid to be analyzed.