SU720399A1 - Titration device - Google Patents

Description

one

This invention relates to analytical instrumentation and can be used in titrometry.

A device for titration is known, which contains a dosing feeder, a transducer and a counter.

It is also known a device containing dosato;., A converter in the form of an optical pulse system and an electronic pulse counter L2J.

Most closely related to the invention is a titration device containing a liquid dispenser connected to a liquid flow transducer into - -electric pulses and a pulse counter connected to the dispenser by the zero-line setting line.

A disadvantage of the known device is that it does not allow to automate the processing of the results of the analyzes during the back titration with the blank sample and requires manual processing from the operator.

The purpose of the invention is to expand the futures of the device.

This goal is achieved by the fact that the device for T1 randomization contains the first switch, the input of which is connected to the output of the pulse counter, the first logic element connected by its input to the output of the first switch, the first O output of the first logic element, the second logical the element whose first input is associated with

Claims (2)

5 inverse trigger output, the second {input is connected to the output of the flow converter, and the output of the second logic element is connected to one of the inputs of the pulse counter, a generator of direct coal pulses, connected with its third input to the third input of the second logical element of the second, and the second and the third switches, with the direct output trig: the mountain is connected to the fourth entrance of the pto; a logic element and, through the Oroy switch, to the control input of the reversal counter, and the second trigger input through the third switch is connected to the liquid meter dispenser. The drawing shows a block with a; hema titration device,. The device consists of a liquid dispenser 1, a liquid flow converter into an electric pulse 2, a first switch 3, a generator 4 rectangular pulses, a first logic element 5 assembled according to the AND scheme, a second logic element 6 assembled according to the 2 AND-OR scheme, a second switch 7, the third switch 8, the trigger 9 and the counter 10. | -1 pulses “The device works as follows. The mechanical movement of the rod of the dispenser 1 fluid is transmitted to the transducer 2 of the fluid flow sf electrical pulses. The Elevurich pulses, the number of which is proportional to the volume of the liquid to be titrated, goes to the second input of the second logic element 6. Depending on the position of the trgger 9, the input of the pulse counter U through the second logic element 6 is connected pulses or a generator of 4 rectangular pulses. The direct output of trigger 9 through the second switch 7 is connected to the input of the control: that by reversing the electronic counter of pulses 1O, it determines the current value and reads the pulses. The output of the pulse counter Yu is connected via the first switch 3 to the input of the first logical element 5, connected to the first input of the trigger 9. The back-titration mode with the blank sample is carried out as follows. First, a blank is titrated. The amount of titraite going to titrate the blank sample is set by the first switch 3. When the titrant dials in dispenser 1 from it with the 1st line of the zero line to the input of the estimator, the signal arrives before the impulses, the meter is set to zero at the same time. 9 through the third switch 8. The trigger is set in such a way that to the input of the counter via the second log) mlmsmont (i connects r €, u: jinTop 4 ipsp.oyixj.ibfu ix pulses, to the input of irasyuhi roigch) - h. ) Sipi l complex (chi impulse The Ic-1071 counter is set to 1, up to the value set by 101Px1) with the first switch 3. The output from the counter of 10 pulses goes to switch 3 and from it the output of the first logic element 5. With the coincidence set to the value of nepBbbhvt switch 3 with dialed by the counter 10 pulses, at the input of the first logic element 5 through C, r1 is the signal received at the first input of the trigger 9. The trigger 9 switches and the converter 2 is connected to the output of the counter 10 IR pulses through the second logic element 6 Liquid flow, the input to the control of the reverse of the 1O counter is subtracted. In the process of titration of the sample being analyzed, the pulses from the flow converter 2 are fed to the input of the counter 10 pulses to be separated from the set value. In the direct titration mode, the second switch 7 is set so that the addition signal is fed to the input of the control of the reverse of counter Y, the third switch 8 is set so that the converter 2 of the discharge flow is connected to the input of the pulse counter 1O through the second logic element 6. When the titrant is recruited (), a signal arrives, setting the number of x1 pulses to the zero state. During the titration and pulping of the Cp < / RTI > explorer 2, the flow rates of the liquid are fed to the input of the pulse counter Yu and are added. The invention allows us to automate the processing of the results of analysis in reverse titration with a blank sample, speed up the processing of data analysis, improve the accuracy and reliability of processing the analysis results. The formula is as follows: ti1x1) for yupic titus, containing a scattering metering device, connecting elements1.1th with a fluid flow meter into electrically pulses and counting jf; expansion of the EYUMOSHYOSTER mouth {th logic element, the second logic element, the first input of which is connected to the trigger output, the second input is connected to the output of the flow converter, and the output of the second logic element is connected with one of the pulse counting pulses, the square and pulse generator connected with its the output with the third input of the second logic element, and BTOjKjfl and the third switches. 72 9 at the same time, the forward output of the trigger is connected to the fourth input of the second logic element1 and through the second switch to the control input of the reverse reel a, and a second trigger input, the third switch is connected to the liquid meter output. Sources of information taken into account during the examination 1. Instruments and control systems, No. 7, 1976, p. & 6-29. 2. Authorship of the USSR on the application number 2524520 / 23-26, class, G01 N 31/16, 14.09.77. 3. Potential Titrometer 2. Technical description 5E1, 55O, 072TO (nrotiotype).