SU1092468A1 - Device for control of phorocolorimetric gas analyser - Google Patents

Abstract

A DEVICE FOR CONTROLLING A LOTO-COLORIMETRIC GAS ANALYZER, the ciphers contained a master generator, the first OUTPUT connected to the first INPUT of the first 2I-NOT element, the total counter of impulses connected by the outputs through the first memory unit to the inputs of the transducer codec, the OUTPUT connected to the registrars, which will be used by the registrars. commands, second, third, fourth elements 2I-NOT, synchronization unit, autogenerating multivibrator and scaler, characterized in that, in order to expand the national capabilities of the device by providing control of the control and processing of photocolorimeter data. A trigger, a switch kinematically connected to the drive, the first switch, a scaling counter, and four ZI-NE elements and five PM, sixth, seventh, EIGHTH and ninth elements 2И-NOT, block of executive relays with signal elements connected to them, serially connected second driver, first element ZI-NOT, reversible counter, second memory block, subtractor 1 and 10 swarm switch, as well as sequentially co-connected. first one vibrator, the second element 2И-НЕ and the digital indication unit, the second input of which is connected to the output of the first one-vibrator, the third and fourth INPUTS - with the second OUTPUT of the synchronization unit and with the first and SECOND input block of the executive relay, the first and second OUTPUTS of the digital display unit are connected to the outputs of the first and second memory blocks, respectively, § the first OUTPUTS total:, top (its SP counter is connected to the second inputs of the reverse counter, the output is auto-generating The first multivibrator is connected to the positive INPUT of the first command generator, the OUTPUT output is connected to the first INPUT of the first switch connected to the second output: ABOUT THE INPUT OF THE FIRST ZI-IE element and through the second element of the ZI-NE - to the third OUT of the reversing counter, four four in. which is connected to the output CTJ of the second one-shot and to the right OO INPUT of the third element 2I-NOT connected to the OUTPUT with the second INPUT of the summing counter, the second output of which is connected to the first input of the fourth element ZI-fIE, torym input connected to the output of the fourth sync block and to the first input of the fourth coupler NOR) swarm input is connected to a second input of the third coupler and to the NOR b.tyuka sinhronizatiit third output, the third input element of the fourth 31NE

Description

connected to the first input of the synchronization unit and through the fourth element 2I-NOT to the second input of the synchronization unit, the second input of the fourth element 2I-NOT connected to the output of the second single-oscillator and to the first input of the master clock counter connected to the second input through the fifth element 2I-NOT to the second input of the generator, the output of the first element 2I-NOT is connected to the second input of the maximum counter, the third input of which is connected to the test element 2I-NO, the second inputs of the first, fifth, sixth and eighth elements 2I-NO, as well as the input nine That element 2I-NOT, the first switch and the second memory block are connected to the output bus of the synchronization block; the output of the third element

3fi-HE is connected to the first input of the seventh element 2I-H. and with the first input of the trigger, the second input of which is connected to the second input of the first memory block, to the output of the fourth element ZI-NO and to the second input of the seventh element 2I-NOT, the output of which is connected to the output of the first one-vibrator, the output of the trigger is connected to the input of the block executive relays and with the fourth input of the digital w-1D block, the second input of the master oscillator connected to the second input of the code converter is the current, the third output of the totalizing counter is connected to the third input of the synchronization unit, and the output of the reversible counter p dklyuchen to the fourth input of the synchronization unit.

The invention relates to measuring, technology and can be used in photocolorimetric gas analyzers with a photochemical converter of any type, for example, powder, liquid tape, tablet, etc.

A control device for a photo-colorimetric gas analyzer is known, comprising a photo-receiver included in a measurement circuit, a driving generator, a drive associated with a sample supply device, a fluid flow booster, a switch, an executive relay unit, a recording device and a software device associated with the drive and with However, this device does not provide data output in the dynamics of the work of the Aocolorimetric gas analyzer on the means of the mapping audio stroke process gas analysis and automatic control of the course of the process with an automatic alarm of vozmozhnps unusual situations, for example to stop the engine of measurement prevtyunii limit fault. : - analyzer, etc.

The closest to the invention is a device containing a photochemical converter, a photodetector included in the measuring circuit, an amplifier connected to the Bt input of the photoreceiver, a cyclro-analogue converter with a register connected to it, a device with it, keys, summing counter associated with the decoder, a synchronization node with an analog-digital converter connected to it and a master pulse generator, integrator, comparator, register L 2 I.

However, this device is also applied to control only a photocolorimetric gas analyzer with a liquid photochemical converter and does not allow monitoring the process of controlling and processing the photocolorimeter data.  In addition to jroro, the known control device does not always provide a linear transformation of the color change of the photochemical converter into the code, since in most cases this color change is associated nonlinearly with the resistance of the measuring sensor.  At the same time, an additional difficulty is created by the need for correction due to a decrease in the sensitivity of the photochemical converter.  The aim of the invention is to expand the functionality of the device by ensuring control of the process of controlling and processing the photocolorimeter data.  This goal is achieved by the fact that the device for controlling a photo by a colorimetric gas analyzer, containing a master oscillator, is first connected to the first input of the first element 2-AND-NOT, a summing pulse counter connected by outputs through the first memory block to the inputs of the code converter — current, the output of which is connected to the information recorder, two one-shot, the first command generator, the second, third and fourth elements 2I-NOT, a synchronization unit, an auto-generating multivibrator and a scaler, are entered a trigger switch, kinetic cally coupled to drive the first switch counter. scaling and detecting of the ZI-NE element and the fifth, sixth, seventh, eighth and ninth elements 2I-NOT block of the executive relays with signal elements connected to them, connected in series to the second driver, first element ZI-NOT, reversible counter, second block the memory, the readout counter and the second switch, as well as the first single vibrator, the second element 2I-NOT and the digital display unit, the second input of which is connected to the output of the first one vibratron, the third and fourth inputs to the second output synchronization with the first and second inputs of the executive relay unit, the first and second outputs of the digital display unit are connected to the outputs of the first and second memory blocks, respectively, the first outputs are summed up by its counter connected to the second inputs of the reversing counter, the output of the auto-generating multivibrator is connected to the positive input the first command driver, the output of which is connected to the first input of the first switch connected by the output to the second input of the first ZI-NE element and through the second ZI-NE element - with t named by the input of the reversible counter, the fourth input of which is connected to the output of the second one-vibrator and to the first input of the third element 2I-NOT connected to the second input of the summing counter, the second output of which is connected to the first input of the fourth element ZI-NOT, the second input connected to the fourth output cable synchronization unit and to the first input of the fourth element ZI-NOT, the second input of which is connected to the second input of the third element ZI-NOT and to the third output of the synchronization unit, the third input of the fourth element ZI- NOT connected to the first input of the synchronization unit and through the fourth element 2I-NOT to the second input of the synchronization unit; the second input of the fourth element 2I-7TH is connected to the output of the second one-oscillator and to the first input of the scaling counter connected to the second input through the fifth element 2I-NOT to the second input of the master oscillator, the output of the first element 2I-NOT is connected to the second input of the countercount code, the third input of which is connected to the sixth element 2I-NO, the second inputs of the first, fifth, sixth and eighth elements 2I-NOT, as well as One of the ninth element 2I-NOT, the first switch and the second memory unit is connected to the output bus of the synchronization unit, the output of the third element ZI-NO is connected to the first input of the seventh element 2I-NOT and to the first input of the trigger, the second input of which is connected to the second the input of the first memory block, to the output of the fourth element ZI-NOT and to the second input of the seventh element 2I-NOT, the output of which is connected to the output of the first one-shot ,.  the trigger output is connected to the input of the executive relay unit and to the fourth input of the digital indication unit, the second output of the master oscillator is connected to the BTOpobiy input of the code-current converter, the third output of the summing counter is connected to the third input of the synchronization unit, and the reverse counter output is connected to the fourth input of the block sync.  FIG.  I presents the functional diagram of the proposed device; in fig.  2 is a diagram of a synchronization unit and its communication with other units of the control device; in fig.  3 is a circuit for switching on a reversing counter; in fig.  4 is a timing diagram of the operation of the synchronization unit, in which the dotted line indicates the possibility of an arbitrary state that does not affect synchronization.  The device (FIG. 1) contains an auto-generating multivibrator 1, in which, instead of the time of the master resistor, a photoresistor 2 is installed, installed in the path of the beams, from the source 3 of the light and reflected by indicator porops D.  The multivibrator performs the function of a resistance-frequency converter.  The repetition period of the multivibrator is linearly related to the resistance of the photoresistor.  The device also contains a master oscillator 5, shapers 6 and 7 commands, a mercury switch 8, a scaling counter 9 with a scale setting unit 10, switches I and 12, a five-digit reversing counter 13, storage units 14 and 15, a three-bit subtraction counter 6, three-digit summing counter 17 pulses, code-to-current converter 18, information recorder 19, one-digit digital indicator 20 of operation mode 3 single-digit digital indicator 21 of an emergency, two-digit digital indicator 22 with a switch 22 a, alternately Performing. The functions of the indicator of the measurement result and the indicator of the validity of the photochemical converter (in this case, the indicator powder), one-shot 23 and 24 give out a single pulse when a positive pulse / pulse front arrives at the input, one-shot 25, a single pulse at the entrance of a negative pulse front, trigger 26, elements 2I-NOT 27-35, logical elements ZI-HE 36-39, executive relays 40-42, signal elements (light bulbs) 43-45, and block 46 synchronization.  Synchronization unit 46 (FIG.  2) contains O-triggers 47-53, one-shot 54, elements 2I-HE 55 and 56c. In FIG.  1 also presents an electric motor 57, a digital display unit 58, an executive relay unit 59.  The generator 5 is a generator of the SG type with a frequency divider turned on at the output, it is possible to receive signals of 1 MHz and 100 kHz frequency, synchronized with each other, with gating of signals on the outputs, allowing to disconnect another output from the common circuit and apply to it a constant voltage corresponding to the level of the logical unit.  On the logic element 34, the generator 5 supplies the frequency I MHz, to the other elements of the device - 100 kHz, and these frequencies are synchronized with each other.  The digital indicator 22 provides information immediately as a percentage, since the result is obtained by calculating C 13 where A is the concentration of the gas to be analyzed,%; frequency corresponding to 1: and the initial background of the photochemical converter; frequency corresponding to the background of the photochemical converter after the gas being analyzed is blown; scaling factor Shapes 6 and 7 commands are operational amplifiers, used to form the level of TTL logic from the levels of signals (commands) 5 coming from multivibrator 1 and mercury switch 8, Counter 9 scaling is designed to calibrate the gas analyzer at different measuring limits, since Calibration requires a scale for each scale limit.  The scaler 10 is designed as a code switch.  The switch 11 is designed to alternately transmit signals from the driver 6 commands and the master oscillator 5.  Switch 12 is designed to alternately transmit sitals with a scaling 9 and subtract 16 counters.  Each of the switches 11 and 12 has two authorization and two information inputs.  In the logical state of permitting inputs 1–0, information passes through the first information input (from the driver 6 commands on the switch 11 and from the meter 9 of memory on the switch 12).  In the logical state of permitting inputs 0-1, information passes through the second input 1Y input (from master oscillator 5 on switch P and from subtractive counter 16 on switch 12).  Reversible counter-13 (FIG.  H) provides the addition or subtraction of the inputs to its pulse inputs.  For example, the reversible counter 13 records the frequencies fpi, subtracting the frequency f from the frequency fp: dividing () by writing to itself the result of dividing and then dividing the recorded result by the multiplication factor M, When dividing () I use only three most significant bits llf-Y, which is sufficient for calculations with an accuracy of 1%.  The R inputs of the counters 13 through the one-shot 23 are connected to the form of 7 commands, which sets the reversible counter 13 to the zero state, t. e.  way at the outputs of the counters the signal of the logical O.  Thus, after the arrival of the frequency signal from the multivibrator to input +, and then the frequency signal f is subtracted to the input FROM the accumulated frequency signal fg.  Inputs C in the counters (Figs. 3) are pre-installation inputs, on arrival of which the logical O signals are recorded, the information available at inputs f) jj, b, D, Dj, connected to the outputs of summing counter 17, The recording signal comes from the output of the reversible counter 13.  It simultaneously signals the end signal de transfer signal to the reversible counter 13 of the result of this division from the summing counter 17, which at this time has inputs DQ, 0, D, 0 counters 1I, Y and Y.  The output About the counter Y is connected to the input of the trigger 47 of the block 46 synchronization.  In the reversible counter 13, a delay line is provided, consisting of a resistor R and a capacitor C.  Since the dividing end signal goes to the input of the reversing counter 13 itself and to other elements of the control device, to prevent failures, this signal is fed to the input of the counter 13 with a delay only after all the other elements fail.  The storage unit 14 is intended to store the information about the initial frequency corresponding to the initial background value of the indicator threshold.  The storage unit 15 serves to store the results of processing the sensor signals.  The formers 6 and 7 of the commands are executed on the K554SASB series, and the switches, the counter and the blocks M, 12, 13, 14 and 15 on the 155 series chips. The code converter –current 18 is a standard K5532D2 chip and serves to convert the current signal to a digital signal. arriving at it in binary code from the storage unit 15.  Information logger 19 records information on paper for the entire period of operation of the device for control, Digital indicators 20-22 provide information about the current state of the device for control at the current time.  The communications of the synchronization unit 46 with other elements of the control device are shown in FIG. 1, I corresponding letters.  A mercury switch 8 is kinematically coupled to an electric motor 57.  This kinematic relationship can be realized by means of cams, not shown in the drawing, located on the shaft of the engine 57.  Before closing the switch 8, all elements of the device may be in an undefined state.  The closing moment of the switch 8 under the action of a non-turn rotating camshaft (not shown) of the electric motor 57 corresponds to the start of the blowing of the indicator powder 4 by the analyzed gas.  At this moment, a signal arrives at the command shaper 7, and from its output a negative pulse edge arrives at element 2I-NO 28, t. e.  differential from logical 1 to logical O.  With the release of element 2I-NOT 28 is already positive.  pulse front, t e.  differential from logical O to logical 1, starts the one-shot 23, producing a single impulse.  By this pulse, the scaling counter 9 and the one-shot 23 are set to the zero state.  Simultaneously, the synchronization block triggers are set to the following states: at the output n of the trigger 47 logical at the output A of the trigger 49 logical at the output B of the trigger 49 logical at the output H of the trigger 51 logical at the output K of the trigger 52 logical at the output of the E-trigger 52 logical at output 3 flip-flop 53 logical 1.  In this case, the output O of the one-shot 54 and the output C of the element 2I-HE 56 appears logical 1.  Since the output 1 of the flip-flop 51 is the logical 1, then from the one-shot 24 to the element 2I-NO 33 comes logical I, allowing the passage of the same pulse to the summing counter 7, which is also set to the zero state.  The same impulse passes through element 32, an open logical 1 from a reversible counter 13, and sets from input C an output F of the trigger 50 to a logical O, and an output li of this trigger into a logical G After passing a positive edge of the pulse from element 2I-HE 28 and The relay 40, which has been established at its output, triggers the relay 40 and the light bulb 43 lights up. At the output of the vibrator 25 at this time, y. logical O is forced, since from output K of trigger 52, logical 1 arrived at it and output of element 2I-NO 31 is logical as logical O came to one of its inputs. As a result, the one-one 25 and element 2I-NOT 31 are not digital indicator 20 receives information about binary code 01 and 1 TX 1 turns on, indicating that all elements necessary for the device operation have set 1 to the initial state and the first measurement cycle has been started, the time of which t is determined by the required accuracy and set by the master generator 5 .  This measurement cycle consists in the fact that after a sample of a photochemical converter 4, for example an indicator powder, is installed, before the photoresistor 2, the frequency signal f from the autogenerating multivibrator 1, corresponding to the initial background of the powder, is fed to the driver 6.  From the driver 6 commands, the signal passes through the switch I1, since at this time logical O is present at its input A, and logical I is at its input B, and through; ZI-HE element 39, since its logical logic is present at its inputs Logical element 2I-NOT 28 and logical SQU from the output C of element 2I-NOT 56 of the synchronization unit 46, and is fed to the input of the reversible counter 13 | where during the time t (in this case, after 10 s) accumulates in all five bits.  At this time, the signal through the element ZI-NOT 38 does not pass, since O from the driver 7 commands is present on one of its inputs.  The frequency of 100 kHz from the master oscillator 5 through the logical element 2I-HE 27J open logical 1 from the output C of the element 2I-NOT 56 of the synchronization unit 46 is fed to a three-digit scaling counter 9 and then through the switch 12, the input G of which is at that time I, and at the input F the logical O, goes to a three-bit summing counter 17, from which output through setpoint 10 a negative edge of a sh-pulse will pass to the input of element 2I-NOT 55 of the synchronization unit 46, after which the inverted front gets to the trigger input 52 and switch em it.  Logic 1 is set at output I of trigger 52, and logic O is set at code output K, a positive edge from output I of trigger 52 switches trigger 48, the input state of which depends on the output state of trigger 47, and trigger 48 triggers a one-shot 54, Pulse C The output D of the one-shot 54 information f is recorded from the reversible counter 13 to the storage unit 14 and then with the same pulse through the open logic element 35s at the second input of which at this time the logical I, the same information is written to the subtracting counter 16, Logic 1 from the output f of the flip-flop 52 of the synchronization unit 46 is fed to the element 2H-fIF 56, at the output of which logical 0 appears, since at the time f the logical i is also at the input f  At the same time, from the output C, element 2I-NOT 27 and elements ZI-HE 38 and 39 and frequencies f to the reversible counter 13 and 100 kTi to the counter 9 of the mapping are not passed.  And since at this time the output K of the trigger 52 is a logical P.  the one-shot 25 produces a single positive pulse. As a result, element 2I-NO 31 gives a negative impulse, since at its second input there is a logical output from element 2I-NO 28.  Thus, from the outputs of the single vibrator 25 and element 2I-NO 31, digital indicator 20 is supplied with information in binary code 1-0 and the figure 2 lights up on it, and the signal value indicating the completion of the measurement time, termination of recording the frequency signal in reversing the counter 13 and disconnecting the master oscillator 5 from the scale counter,.  is recorded in memory unit 14.  At the end of the blowing of the indicator powder by the analyzed gas, the contact of the switch 8 is opened.  With this, at the output of the forma l 7 commands, a drop from logical o to logical 1 occurs, and at the output of logical element 28, respectively, a drop from logical i to logical o.  When this happens, the light bulb 43 goes off, the logical element 1 appears at the output of element 2I-NO 31 and information in binary code is supplied to digital indicator 20, as a result of which the number 3 lights up, signaling the end of the purge of the analyzed gas.  At the same time, a logical O from the output of element 2I-HE 28 is fed through the input f of the input of element 2I-NOT 46 and logical 1 appears at its output C, allowing the passage of signals through element 2I-NOT 27 and elements ZI-HE 38 and 39.  But the signal from the driver 6 commands through the switch 11 now passes through the logical element ZI-NOT 38, since from element 28 the logical O arrived at the input of the element ZI-HE 39, and the third input of the element ZI-HE 38 received the logical 1 c-generator 7 teams.  From the element 38, the frequency is fed to the input of the reversing counter 13 and the frequency is subtracted from the recorded Q often Q during the same time (s).  The frequency of 100 kHz passes in the same way as before, and the negative edge of the pulse arrives at the input of element 2I-NOT 55, is inverted, and a positive edge arrives at the input of the trigger 52.  As a result, the trigger 52 switches and at its output t a logical O is formed, at the output K a logical 1.  With this, c.  the output K of the trigger 52, the positive edge switches the trigger 49, at the output A of which logical I appears, and at the output B logical O, and the trigger 50 whose output F is logical 1 and the output R the logical O.  At the same time, the passage of frequency from the master oscillator 5 through the switch 11 is prohibited, the signal from the driver 6 kolipts is prohibited, the signals from the calculator 16 are allowed to pass through the switch 12 and the signals from the scaling counter 9 are prohibited from passing.  In this case, the logical output A of trigger 49 permits the passage of a frequency of 1 MHz through element 2I-NO 34 and pulses through element 2I-NOT 29.  At the outputs of the one-shot 25 and element 2I-NO 31, logical O appears and the number 3 on the digital display 20 goes out.  The division process begins.  yr  ; 0 The counting pulses from the subtracting counter 16 through the open commutator 12 are summed up in the summing counter 17 until an impulse to terminate the division passes from the reversing counter 13.  This pulse records the result of dividing into the reversible counter 13 from summing counter 17.  The same impulse, having passed through the open element 2I-HE 32 (at its second input at this moment there is a logical I), switches the trigger 50, at the output F of which logical O appears, and at the output G - logical 1.  As a result, the signals from scaling counter 9 are allowed to pass through switch 12 and the signals from subtractive counter 6 are prohibited from passing.  The same pulse switches trigger 51, at the output H of which logical 1 appears.  The single-oscillator 24 generates a single pulse, which, having passed through element 2I-HE 33, sets summing counter 17 to the zero state.  Logic 1 out

H flip-flop 51 ras; a; is the passage of pulses through the elements ZI-NOT 36 and 37 (at this time the output J of the flip-flop 53 of the synchronization unit 46 signal logical 1).

Then the second dividing process begins. At this time, the counting pulses are received from the scaling counter 9, the information in which is set using the scaler setpoint 10, through the switch 12 in the clock {counter} 17. The division process itself proceeds in a similar way, only the division is performed - on the required scaling factor. five

The impulse about the end of the second division process passes from the reversible counter 13 through the open element ZI-NO 36. With this impulse, the information about the results of the division of 20 s cm of the counter meter 17 into the storage unit 15 is recorded and the trigger 26 is set to O. And this. The same impulse, passed through the element 2I-NOT 30, arrives at the trigger 53 and switches it 25 at the output 3 into the state of logic 1. At the same time, the elements ZI-HE 36 and 37 are knocked out and the passage of the pulses through them becomes impossible. Therefore, all other signals passing through the control device p do not affect the readings of the digital indicator. The measurement cycle ends there. The end of impulse impulse shifts the synchronization block to the next impulse mode with,. sensor, after which the cycle of operation is repeated. If the result of the division exceeds the limit value (in this case, 100), then the summing counter 17 receives logical 1 to the ZI-HE element 37, the logical O from which sets the trigger 26 1. As a result, the 1 indicator lights up on the digital indicator 21, the relay operates 42, including, for example, a ventilation system, and the lamp 45 lights up, indicating a threatening situation. A trigger 53 is switched from the 2I-NE 30 to a positive front, at the output of which logical O appears and the ZI-NO 36 and 37 elements are closed again, prohibiting the passage of pulses even before the end of the division and retaining the previous information in the storage unit 15.

If in case of a source 3 light source burns out in the sensor, a full generation of indicator powder and other faults that may occur in the control device, as well as at a frequency less than the required limit (in this case less than I kHz), a failure occurred, then the reversible counter 13 the positive edge will not arrive at input a on trigger 47, at the output of which logical 1 is saved. Then, with the arrival of a positive front on the trigger 48 at its output E, Vits logical I, the light 44 lights up, the relay 41 operates and O (failure) lights on the digital indicator 21, indicating a malfunction of the analyzer or control unit.

If the frequency f0 is in the normal range, then the positive edge goes to trigger 47, a logical O appears at its output n, which passes to output E of trigger 48, and as a result there will be no signal of failure.

1Three passes from the reversible counter 3 impulse on the end of the division, a signal is issued to record information from the summing counter 17 to the storage unit 15. This storage unit, like the storage unit 14, is connected to a two-digit digital indicator 22, on which the processing results are displayed frequency sensor control device. After the digital indicator 20 goes out, digital measurement indicator 22 displays the result of measuring the concentration of gas being analyzed as a percentage of the scale limit. If necessary, check the background powder of the indicator powder, the operator presses the switch button 22a, transferring it to receive information from the storage unit 14, and reads the value of the autogenerating multivibrator 1 initial frequency fg displayed on the indicator 22. specific indicator powder limit, for example less than 1 kHz, it will serve as a signal that the indicator flow. Got a redundant initial background and it's time to replace it with a new one. It goes without saying that the invention can be used in photo-colorimetric gas analyzers having a photochemical converter not only of powder type, but also liquid, and tape, and tablet, i.e. a photochemical converter of any type that changes its color or optical density under the influence of the analyzed gas. The proposed photocolorimetric gas analyzer control unit provides the ability to output data in the dynamics of the process of analyzing toxic gases to the imaging device, allowing step-by-step monitoring of the measuring process and data processing both during commissioning of the gas analyzer and in operation with automatic signaling of possible malfunctions x At the same time, the linear calibration calibration of photo colorimetric gas analyzers was simplified. In addition, the effect of changes in the light flux on the photoresistor and temperature changes of the photoresistor on the linearity of the display is reduced. Providing the operator with reliable information on the process of measuring and processing data facilitates the commissioning and operation of photocolorimetric gas analyzers, allows for localizing and eliminating malfunctions in a timely manner, replacing the developed photochemical converter in a timely manner, promptly indicating that the permissible concentration of toxic gas is working, and monitoring the photocolorimetric gas analyzer for three modes of measuring process and reduce the amount of routine labor at a service. In addition, the use of the invention makes it possible to establish the durability of the developed photochemical converters and the technically justified period for them.

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Claims (1)

DEVICE FOR CONTROLLING A PHOTOCOLORIMETRIC GAS ANALYZER, containing a master oscillator, connected to the first input of the first 2I-NOT element by a first output, adding a pulse counter connected by outputs through the first memory block to the inputs of the codec converter, the output of which is connected to the information recorder, two one-shot, the first shaper, the first shaper , second, third, fourth elements 2I-NOT, synchronization unit, auto-generating multivibrator and scaler, characterized in that, in order to expand the function Due to the control of the process of controlling and processing the photocolorimeter’s data, a trigger, a switch kinematically connected to the drive, a first switch, a scaling counter, and four ZI-NOT elements and the fifth, sixth, seventh, eighth and ninth elements 2I- are introduced into it NOT a block of executive relays with signal elements connected to them, a second shaper connected in series, a first ZI-NOT element, a reversible counter, a second memory block, a subtraction meter and a second switch, as well as sequentially connected the first one-shot, the second 2I-NOT element and a digital display unit, the second input of which is connected to the output of the first one-shot, the third and fourth inputs - with the second output of the synchronization unit and with the first and second input of the executive relay unit, the first and second outputs digital indication blocks are connected to the outputs of the first and 'second memory blocks, respectively, _{with the} first outputs of the totalizing counter ® connected to the second inputs of the reversing counter, the output of the auto-generating multivibrator is connected n with a positive input of the first command former, the output of which is connected to the first input of the first switch connected by the output to the second input of the first ZI-NOT element and through the second ZI-NOT element to the third input of the reverse counter, the fourth input of which is connected to the output of the second one-shot and to the first input of the third element 2I-NOT connected by the output to the second input of the totalizing counter, the second output of which is connected to the first input of the fourth element ZI-NOT, the second input connected to the fourth output of the unit As for synchronization and to the first input of the fourth ZI-NOT element, the second input of which is connected to the second input of the third ZI-NOT element and to the third output of the synchronization block, the third input of the fourth ZI'NE element gg _u 1092468 i092468 is connected to the first input of the synchronization block and through the fourth element 2I-NOT - with the second input of the synchronization unit, the second input of the fourth element 2I-NOT connected to the output of the second one-shot and with the first input of the scaling counter connected by the second input through the fifth element 2I-NOT to the second input of the master gene iterator, the output of the first 2I-NOT element is connected to the second input of the subtracting counter, the third input of which is connected to the sixth element 2I-NOT, the second inputs of the first, fifth, shetdgo and eighth elements 2I-NOT, as well as the input of the ninth element 2I-NOT, the first the switch and the second memory unit are connected to the output bus of the synchronization unit, the output of the third element ZI-NOT connected to the first input of the seventh element 2I-NOT and to the first input of the trigger, the second input of which is connected to the second input of the first memory block, to the output of the fourth element ZI-NOT and to the second input of the seventh element 2I-NOT, the output of which is connected to the output of the first one-shot, the trigger output is connected to the input of the executive relay unit and to the fourth input of the digital display unit, the second output of the master oscillator is connected to the second input of the code-current converter, the third output of the summing counter is connected to the third input of the block and synchronization, and the output of the reversible counter is connected to the fourth input of the synchronization block.