CN106645589A - High-precision automated oxygen concentration detector based on cuprammonium process as well as method - Google Patents
High-precision automated oxygen concentration detector based on cuprammonium process as well as method Download PDFInfo
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Abstract
The invention discloses a high-precision automated oxygen concentration detector based on a cuprammonium process as well as a method. The detector comprises a benchmark and fluid supplementation bottle, a reaction bottle, a gas burette, a two-way pump, a rotary impeller and a single chip microcomputer, wherein a stepping motor controls a lifting platform to lift or drop; a measuring light curtain sensor is used for detecting whether the liquid level of the benchmark and fluid supplementation bottle and the liquid level of the gas burette are kept in the same height in real time, and cooperates with the stepping motor to realize automatic leveling of the two liquid levels; automatic adjustment of a gas-liquid pipeline is realized by the aid of the two-way pump; the rotary impeller is driven by a turbine to realize automatic operation of the chemical reaction; automatic control of a measurement system is realized by the aid of the single chip microcomputer based on a single chip microcomputer control technology. According to the high-precision automated portable oxygen concentration detector, oxygen concentration detection efficiency and environmental suitability are improved, personal errors in a measurement process are reduced, besides, accuracy of oxygen concentration detection based on the cuprammonium process is further improved, and the great actual significance and application value are achieved.
Description
【Technical field】
The present invention relates to it is a kind of based on the high accuracy of cuprammonium process, automation oxygen concentration detector and method, belong to gas dense
Degree detection technique field.
【Background technology】
Cuprammonium process is current internationally recognized gas oxygen concentration testing goldstandard, in existing concerned countries standard, is adopted
Cuprammonium process is demarcated to oxygen concentration in gas.The method adopts pure chemistry method, measurement result and environment temperature, pressure without
Close, measurement performance is reliable and stable, the oxygen concentration detection being suitable under the particular surroundings such as plateau low pressure.However, existing cuprammonium process measurement
Device is full glassware, and measurement process is artificial operation, and program is loaded down with trivial details, and subjective factor affects big, Automatic survey degree
Low, portability is poor.For large-scale oxygen generating plant and specific use Medical Devices are in situ, fast, accurately oxygen concentration testing reality
Border demand, particularly lifting measurement device adaptability in particular circumstances, needs on the basis of existing cuprammonium process measuring principle
On, further strengthen the automation of cuprammonium process measuring equipment for oxygen concentration ard, intelligent and portability.
【The content of the invention】
The purpose of the present invention be disclose it is a kind of based on the high accuracy of cuprammonium process, automation oxygen concentration detecting apparatus and method,
By optimization design cuprammonium process measurement apparatus, and electronic technology, automated control technology, sensor technology are comprehensively adopted, lifted
The certainty of measurement of cuprammonium process measuring equipment for oxygen concentration ard, measurement efficiency, portability and automaticity.
To reach above-mentioned purpose, technical scheme below is present invention employs：
It is a kind of based on the high accuracy of cuprammonium process, automation oxygen concentration detector including level and fluid infusion bottle, eudiometer tube, anti-
Answer bottle and automation control system；
Described level and fluid infusion bottle inside dress copper ammon solution, bottom arranges two interfaces, is respectively provided with two interfaces
There are the first valve, the second valve；Second valve passes through the first connecting tube coupled reaction bottle bottom interface；First valve passes through second
The B2 ports of connecting tube connecting tee piston, level arranges the 3rd connecting tube with fluid infusion top of bottle, and one end of the 3rd connecting tube is stretched
Enter below the liquid level of level and fluid infusion bottle, the B1 ports of other end connecting tee piston are provided with two-way pump in the 3rd connecting tube；
Stop,threeway upper end is connected with eudiometer tube, and eudiometer tube upper end is connected with four-way piston, divides on A1, A2, A3 port of four-way piston
Not Lian Jie blast pipe, the 4th connecting tube and measurement pipe, the 4th connecting tube coupled reaction top of bottle, in reaction bulb be equipped with copper ammon solution
And copper wire, reaction bulb bottom is provided with rotary blade；
Described automation control system includes controller, lowering or hoisting gear and fluid level sampling device；Described lowering or hoisting gear
Level is driven to move with fluid infusion bottle in the vertical direction, in described fluid level sampling device collection level and fluid infusion bottle and eudiometer tube
Portion's liquid level, described controller control connects two-way pump, rotary blade, fluid level sampling device and lowering or hoisting gear.
Described lowering or hoisting gear is stepper motor, and stepper motor is arranged on base, and level is arranged on first with fluid infusion bottle
On workbench, the workbench of driving stepper motor first is moved in vertical direction.
Described fluid level sampling device is Measuring light screen sensor, the first Measuring light screen sensor include one group of light projector and
One receivers, is separately positioned on the outer wall of eudiometer tube both sides；Second Measuring light screen sensor includes one group of light projector and one group
Receiver, is separately positioned on level and fluid infusion bottle both sides outer wall.Measuring light screen sensor level detection precision is not less than 3mm.
Described controller be single-chip microcomputer, the first Measuring light screen sensor, the output signal of the second Measuring light screen sensor
After external signal modulate circuit, single-chip microcomputer is input into；Single-chip microcomputer is furnished with keyboard, and keyboard is used for control signal in measurement process
Input and the input of the second workbench elemental height.
Described eudiometer tube is made up of upper pipes, central tube and lower end pipe, central tube with diameter greater than upper pipes and lower end
The diameter of pipe；Upper pipes, central tube and lower end pipe are provided with scale.
The measurement end horizontal positioned of described measurement pipe, for measuring gas of the oxygen concentration higher than 99%, the pipe of measurement pipe
Footpath is the 1/10～1/5 of eudiometer tube upper end caliber.
Described rotary blade is turbine structure.
A kind of test method using based on the high accuracy of cuprammonium process, automation oxygen concentration detector, comprises the following steps：
1) pipeline topping up exhaust：Open A2 ports, the B1 ports of stop,threeway, the first valve, second valve of four-way piston
Door, starts two-way pump and rotates forward, and empties all gas in eudiometer tube, the second connecting tube and reaction bulb, until liquid is full of whole
Pipeline；Gas in the same A1 ports upper end blast pipe of emptying four-way piston and the A3 ports upper end measurement pipe of four-way piston；
2) eudiometer tube fills tested gas：A1 ports, the B2 ports of stop,threeway, first valve of four-way piston are opened,
The second valve is closed, tested gas is stamped into eudiometer tube via the A1 ports of four-way piston, causes the liquid level in eudiometer tube to move down；
Start lowering or hoisting gear, adjustment level and the liquid level of fluid infusion bottle with the liquid level in eudiometer tube it is concordant after, the first valve of closing, four
Logical piston and stop,threeway, stop stepper motor；
3) tested gas fills reaction bulb：A2 ports, the B1 ports of stop,threeway, second valve of four-way piston are opened,
The first valve is closed, is started two-way pump and is rotated forward, sample in measurement pipe is all pushed into reaction bulb, start the rotation of reaction bulb bottom
Rotary impeller；
4) residual gas filling eudiometer tube：Start two-way pump reversion, draw back whole residual gas to eudiometer tube upper end；
5) oxygen concentration is measured：B2 mouths, first valve of stop,threeway are opened, four-way piston, the second valve is closed, is opened
Stepper motor, adjustment level is concordant with the liquid level same amount tracheae liquid level of fluid infusion bottle, and then reading, measures oxygen concentration.
Further, the measuring method also including oxygen concentration more than 99%：
If oxygen concentration is more than 99%, starts two-way pump and rotate forward, make the very small amount residual gas in eudiometer tube enter four-way
Measurement pipe above the A3 ports of piston, after residual gas fully enters measurement pipe, closes four-way piston, by measurement pipe
Scale measures the concentration of oxygen.
Further, also including level and fluid infusion bottle with double horizontal liquid levels between eudiometer tube automatic leveling step：
On the basis of to fix the second workbench, the height between the first workbench and the second workbench is measured, be designated as first
The elemental height H20 of workbench, when stepper motor is moved up and down, using the second Measuring light screen sensor and the first Measuring light screen
Sensor distinguishes real-time detection level and the height between fluid infusion bottle liquid level and eudiometer tube liquid level and the second workbench, when both height
When degree is the same, then level is concordant with the liquid level holding of the liquid level of fluid infusion bottle and eudiometer tube；
Eudiometer tube liquid level is H1=H11+H12, wherein, H11 is the first Measuring light screen sensor bottom and the second work
Make the height between platform, H12 is the height of the eudiometer tube liquid level of real-time measurement and the first Measuring light screen sensor bottom；
The height of the liquid level in level and fluid infusion bottle is H2=H20+H21+H22+H23, wherein, H20 is the first workbench
Elemental height, H21 is the height that the first workbench is moved in the presence of stepper motor, can be by the step pitch of stepper motor and step
Number is calculated and obtained, and H22 is the height between the second Measuring light screen sensor bottom and the first workbench, and H23 is measurement in real time
Level and fluid infusion bottle liquid level and the height of the second Measuring light screen sensor bottom.
Compared with prior art, the present invention at least has following technique effect：
The oxygen concentration detector of the present invention, including level and fluid infusion bottle, reaction bulb, eudiometer tube and control system.By pipe
Leveling bottle and fluid infusion bottle are merged into a bottle, simplied system structure by road optimization design.Lowering or hoisting gear is used to control lifting platform
Whether lifting, Measuring light screen sensor real-time detection level is maintained at sustained height with fluid infusion bottle liquid level same amount tracheae liquid level, and
The automatic leveling in biliquid face is realized in the stepper motor collaborative work.Using two-way pump as driving means, replace manual adjustment
Bottle height drives the mode of tested gas flowing using atmospheric pressure, realizes the Automated condtrol of measurement process.Two-way pump reality
The now automation to gas-liquid pipeline is adjusted.Rotary blade adopts turbine drives mode, realizes the automation mechanized operation of chemical reaction, takes
In generation, manually shaking flask promoted chemical reaction mode.Controller realizes the automation control of measuring system based on single-chip microcomputer control technology
System.The present invention is measured as a kind of high accuracy, automation, portable oxygen concentration detecting apparatus by optimization design cuprammonium process
Device, and electronic technology, automated control technology, sensor technology are comprehensively adopted, lift cuprammonium process measuring equipment for oxygen concentration ard
Certainty of measurement, measurement efficiency, portability and automaticity.Oxygen concentration detection efficiency and environmental suitability are not only increased, is subtracted
Human error in few measurement process, and the accuracy of cuprammonium process oxygen concentration detection is further increased, with important reality
Border meaning and using value.
Further, designed using high-purity oxygenation measurement tubular construction, to the certainty of measurement of high pure oxygen up to 0.01%, effectively lifted
Oxygen concentration testing precision to high pure oxygen.
The test method of the present invention is followed successively by：The exhaust of pipeline topping up, eudiometer tube fill tested gas, the filling of tested gas instead
Answer bottle, residual gas filling eudiometer tube, measurement oxygen concentration and exclude pipeline residual gas.Using two-way pump as driving means, take
The mode of tested gas flowing is driven using atmospheric pressure for manual adjustment bottle height, the automation control of measurement process is realized
System.It is comprehensive to adopt electronic technology, automated control technology, sensor technology, lift the measurement of cuprammonium process measuring equipment for oxygen concentration ard
Precision, measurement efficiency, portability and automaticity.Oxygen concentration detection efficiency and environmental suitability are not only increased, is reduced and is surveyed
Human error during amount, and the accuracy of cuprammonium process oxygen concentration detection is further increased, with important actual meaning
Justice and using value.
【Description of the drawings】
Fig. 1 is the structural representation of apparatus of the present invention；
Fig. 2 is the system control principle block diagram of apparatus of the present invention；
Fig. 3 is the biliquid face automatic leveling technical schematic diagram of apparatus of the present invention；
Wherein：1 is base；2 is stepper motor；3 is the first workbench；4 is the first connecting tube；5 is the second valve；6 are
First valve；7 is level and fluid infusion bottle；8 is two-way pump；9 is stop,threeway；10 is eudiometer tube；11 is four-way piston；12 is
Four connecting tubes；13 is reaction bulb；14 is rotary blade；15 is the second workbench；16 is the first Measuring light screen sensor；161、
162nd ..., 16n is first group of light projector；161 ', 162 ' ..., 16n ' be the first receivers；17 are the second Measuring light screen sensing
Device；171st, 172 ..., 17n is second group of light projector；171 ', 172 ' ..., 17n ' be the second receivers；18 is measurement pipe；19
For the 3rd connecting tube；20 is the second connecting tube.
【Specific embodiment】
With reference to the accompanying drawings and detailed description the present invention is described in detail.
As shown in figure 1, the present invention is a kind of based on the high accuracy of cuprammonium process, automation oxygen concentration detecting apparatus, including step
Stepper motor 2, level and fluid infusion bottle 7, eudiometer tube 10 and reaction bulb 13；Stepper motor 2 is arranged on base 1, level and fluid infusion bottle 7
It is arranged on the first workbench 3, stepper motor 2 drives the first workbench 3 to move in vertical direction.The bottom of level and fluid infusion bottle 7
Portion arranges two interfaces, and two interfaces are respectively arranged with the first valve 6, the second valve 5；Second valve 5 is by the first connection
The interface of the bottom of 4 coupled reaction bottle of pipe 13；The B2 ports that first valve 6 passes through the connecting tee piston 9 of the second connecting tube 20；Level
The 3rd connecting tube 19 is set with the top of fluid infusion bottle 7, one end of the 3rd connecting tube 19 is stretched into below the liquid level of level and fluid infusion bottle 7,
The B1 ports of other end connecting tee piston 9, in the 3rd connecting tube 19 two-way pump 8 is provided with；The upper end of stop,threeway 9 and eudiometer tube
10 connections, the upper end of eudiometer tube 10 is connected with four-way piston 11, connect respectively on A1, A2, A3 port of four-way piston 11 blast pipe,
The connecting tube 12 of measurement pipe 18 and the 4th, the top of 12 coupled reaction bottle of the 4th connecting tube 13, reaction bulb 13 is arranged on the second workbench
On 15, the bottom of reaction bulb 13 is provided with rotary blade 14.Level is copper ammon solution with the inside of fluid infusion bottle 7, and the inside of reaction bulb 13 is
Copper ammon solution and enough copper wires.
Measuring light screen sensor is provided with the eudiometer tube 10 and level of the present invention and fluid infusion bottle 7, the first Measuring light screen is passed
Sensor 16 include one group of light projector 161,162 ..., 16n and a receivers 161 ', 162 ' ..., 16n ', the amount of being separately positioned on
On the both sides outer wall of tracheae 10；Second Measuring light screen sensor 17 include one group of light projector 171,172 ..., 17n and a receivers
171 ', 172 ' ..., 17n ', be separately positioned on level and the both sides outer wall of fluid infusion bottle 7.Measuring light screen sensor level detection essence
Degree is not less than 3mm.
Wherein, high-purity oxygenation measurement pipe horizontal positioned, caliber is the 1/5～1/10 of eudiometer tube upper end caliber, to high-purity
The certainty of measurement of oxygen is up to 0.01%.
Whether the Measuring light screen sensor real-time detection level is maintained at same with fluid infusion bottle liquid level same amount tracheae liquid level
Highly, the automatic leveling in biliquid face is realized with the stepper motor collaborative work.
The two-way pump replaces manual adjustment bottle height to drive tested gas flowing using atmospheric pressure as driving means
Mode, realize the Automated condtrol of measurement process.
The rotary blade adopts turbine drives mode, realizes the automation mechanized operation of chemical reaction.
The single-chip microcomputer is based on Automatic control of single chip microcomputer technology, by the two-way pump, the stepper motor and described
The control of rotary blade, and the signal transacting to the Measuring light screen sensor 16 and 17, realize the automation of measuring system
Control.
As shown in Fig. 2 realizing the Automated condtrol of system using single-chip microcomputer control technology.The positive-negative rotation state of two-way pump 8,
Rotating forward or reverse signal are sent to using single-chip microcomputer and realize.The lifting action of stepper motor 2, using single-chip microcomputer to stepping
Motor 2 sends lifting signal and realizes.The control of rotary blade 14, by single-chip microcomputer to the transmission start stop signal of rotary blade 14
Realize.The output signal of Measuring light screen sensor 16 and 17 is input into single-chip microcomputer after external signal modulate circuit, through corresponding
Signal processing algorithm, the liquid level and the liquid level of eudiometer tube 10 of level and fluid infusion bottle 7 are calculated in real time.Keyboard is used to measure
The input and the input of the elemental height of the second workbench 15 of control signal in journey.
The test method implementation steps of the present invention are followed successively by：The exhaust of pipeline topping up, eudiometer tube fill tested gas, tested gas
Body filling reaction bulb, residual gas filling eudiometer tube, measurement oxygen concentration, exclusion pipeline residual gas.Specifically include following steps：
1. pipeline topping up exhaust.Open the A2 ports of four-way piston 11, the B1 ports of stop,threeway 9, the first valve 6, the
Two valves 5, start two-way pump 8 and rotate forward, and empty all gas in eudiometer tube 10, the second connecting tube 12 and reaction bulb 13, until
Liquid is full of whole pipeline.The A1 ports upper end gas of four-way piston 11 and the A3 ends of four-way piston 11 are emptied using same method
The gas of mouth upper end measurement pipe 18.
2. eudiometer tube fills tested gas.Open A1 ports, the B2 ports of stop,threeway 9, first valve of four-way piston 11
Door 6, closes the second valve 5, and tested gas is stamped into eudiometer tube via the A1 ports of four-way piston 11, in causing eudiometer tube 10
Liquid level is displaced downwardly near 100ml scales.Start stepper motor 2, the liquid level for adjusting level with fluid infusion bottle 7 is with eudiometer tube 10
Liquid level it is concordant, after liquid level is concordant with 100ml scales in eudiometer tube 10, the first valve 6 of closing, four-way piston 11 and stop,threeway
9, stop stepper motor 2.
3. tested gas fills reaction bulb.Open A2 ports, the B1 ports of stop,threeway 9, second valve of four-way piston 11
Door 5, closes the first valve 6, starts two-way pump 8 and rotates forward, and 100ml samples in measurement pipe 10 are all pushed into reaction bulb 13, starts
The rotary blade 14 of the bottom of reaction bulb 13.
4. residual gas fills eudiometer tube.Start two-way pump 8 to invert, draw back whole residual gas to the upper end of eudiometer tube 10.
5. oxygen concentration is measured.B2 mouths, first valve 6 of stop,threeway 9 are opened, four-way piston 11, the second valve is closed
5, stepper motor 2 is opened, adjustment level is concordant with the liquid level of eudiometer tube 10 with the liquid level of fluid infusion bottle 7, and then reading, measures oxygen
Concentration.If oxygen concentration is more than 99%, starts two-way pump 8 and rotate forward, make the very small amount residual gas in eudiometer tube 10 enter four-way
Measurement pipe 18 above the A3 ports of piston 11, after residual gas fully enters measurement pipe 18, closes four-way piston 11, measures
The concentration of high pure oxygen.
6. the method for excluding pipeline residual gas is vented with pipeline topping up.
As shown in figure 3, realizing that level is same with fluid infusion bottle using Design of Stepper Motor Control Circuit and Measuring light screen sensor technology
The automatic leveling in biliquid face between eudiometer tube.On the basis of to fix the second workbench 15, the first workbench 3 and the second workbench are measured
Height between 15, is designated as the elemental height H20 of the first workbench 3.When stepper motor 2 is moved up and down, using the second measurement
17 and first Measuring light screen sensor of picking sensor 16 distinguishes real-time detection level with the liquid level of fluid infusion bottle 7 and the liquid level of eudiometer tube 10
With the height between the second workbench 15, when both height are the same, the then liquid level and the liquid of eudiometer tube 10 of level and fluid infusion bottle 7
Face keeps concordant.The liquid level of eudiometer tube 10 is H1=H11+H12.Wherein, H11 be the bottom of the first Measuring light screen sensor 16 with
Height between second workbench 15, H12 is the liquid level of eudiometer tube 10 of real-time measurement and the bottom of the first Measuring light screen sensor 16
Height.Level is H2=H20+H21+H22+H23 with the liquid level in fluid infusion bottle 7.Wherein, H20 is the first workbench 3
Elemental height, H21 is the height that the first workbench 3 is moved in the presence of stepper motor, can be by the step pitch of stepper motor and step
Number is calculated and obtained, and H22 is the height between the bottom of the second Measuring light screen sensor 17 and the first workbench 3, and H23 is measurement in real time
Level and fluid infusion bottle liquid level with the bottom of the second Measuring light screen sensor 17 height.
More than, only presently preferred embodiments of the present invention is not limited only to the practical range of the present invention, all according to patent of the present invention
Equivalence changes and modification that the content of scope is done, all should be the technology category of the present invention.
Claims (10)
1. it is a kind of based on the high accuracy of cuprammonium process, automation oxygen concentration detector, it is characterised in that including level and fluid infusion bottle
(7), eudiometer tube (10), reaction bulb (13) and automation control system；
Copper ammon solution is filled inside described level and fluid infusion bottle (7), bottom arranges two interfaces, is respectively arranged with two interfaces
First valve (6), the second valve (5)；Second valve (5) is by the first connecting tube (4) coupled reaction bottle (13) bottom interface；The
The B2 ports that one valve (6) passes through the second connecting tube (20) connecting tee piston (9), level and fluid infusion bottle (7) top arranges the
Three connecting tubes (19), one end of the 3rd connecting tube (19) is stretched into below the liquid level of level and fluid infusion bottle (7), other end connecting tee
The B1 ports of piston (9), in the 3rd connecting tube (19) two-way pump (8) is provided with；Stop,threeway (9) upper end is with eudiometer tube (10) even
Connect, eudiometer tube (10) upper end is connected with four-way piston (11), connection exhaust respectively on A1, A2, A3 port of four-way piston (11)
Pipe, the 4th connecting tube (12) and measurement pipe (18), the 4th connecting tube (12) coupled reaction bottle (13) top, dress in reaction bulb (13)
There are copper ammon solution and copper wire, reaction bulb (13) bottom is provided with rotary blade (14)；
Described automation control system includes controller, lowering or hoisting gear and fluid level sampling device；Described lowering or hoisting gear drives
Level is moved with fluid infusion bottle (7) in the vertical direction, and described fluid level sampling device gathers level with fluid infusion bottle (7) and eudiometer tube
(10) inside liquid level height, described controller controls two-way pump (8), rotary blade (14), fluid level sampling device and lifting dress
Put.
2. according to claim 1 a kind of based on the high accuracy of cuprammonium process, automation oxygen concentration detector, its feature exists
In described lowering or hoisting gear is stepper motor (2), and on base (1), level is arranged stepper motor (2) with fluid infusion bottle (7)
On the first workbench (3), stepper motor (2) drives the first workbench (3) to move in vertical direction.
3. according to claim 1 a kind of based on the high accuracy of cuprammonium process, automation oxygen concentration detector, its feature exists
In described fluid level sampling device is Measuring light screen sensor, and the first Measuring light screen sensor (16) is arranged on eudiometer tube (10)
On outer wall；Second Measuring light screen sensor (17) is arranged on level and fluid infusion bottle (7) outer wall.
4. according to claim 3 a kind of based on the high accuracy of cuprammonium process, automation oxygen concentration detector, its feature exists
In described controller is single-chip microcomputer, and the first Measuring light screen sensor (16), the output of the second Measuring light screen sensor (17) are believed
Number after external signal modulate circuit, single-chip microcomputer is input into；Single-chip microcomputer is furnished with keyboard, and keyboard is used for control signal in measurement process
Input and the second workbench (15) elemental height input.
5. according to claim 1 a kind of based on the high accuracy of cuprammonium process, automation oxygen concentration detector, its feature exists
In, described eudiometer tube (10) is made up of upper pipes, central tube and lower end pipe, central tube with diameter greater than upper pipes and lower end pipe
Diameter；Upper pipes, central tube and lower end pipe are provided with scale.
6. according to claim 1 a kind of based on the high accuracy of cuprammonium process, automation oxygen concentration detector, its feature exists
In, the measurement end horizontal positioned of described measurement pipe (18), for measuring gas of the oxygen concentration higher than 99%, measurement pipe (18)
Caliber is the 1/10～1/5 of eudiometer tube (10) upper end caliber.
7. according to claim 1 a kind of based on the high accuracy of cuprammonium process, automation oxygen concentration detector, its feature exists
In described rotary blade (14) is turbine structure.
8. described in a kind of employing claim 1 based on the high accuracy of cuprammonium process, automation oxygen concentration detector test method,
Characterized in that, comprising the following steps：
1) pipeline topping up exhaust：Open four-way piston (11) A2 ports, the B1 ports of stop,threeway (9), the first valve (6),
Second valve (5), starts two-way pump (8) and rotates forward, and empties complete in eudiometer tube (10), the second connecting tube (12) and reaction bulb (13)
Portion's gas, until liquid is full of whole pipeline；The A1 ports upper end blast pipe and four-way piston of same emptying four-way piston (11)
(11) the gas in A3 ports upper end measurement pipe (18)；
2) eudiometer tube (10) fills tested gas：Open the A1 ports of four-way piston (11), the B2 ports of stop,threeway (9), the
One valve (6), closes the second valve (5), and tested gas is stamped into eudiometer tube (10) via the A1 ports of four-way piston (11), causes
Move down the liquid level in eudiometer tube (10)；Start lowering or hoisting gear, adjust the same eudiometer tube of liquid level of level and fluid infusion bottle (7)
(10) after liquid level in is concordant, the first valve (6), four-way piston (11) and stop,threeway (9), stopping stepper motor (2) are closed；
3) tested gas fills reaction bulb：Open A2 ports, the B1 ports of stop,threeway (9), second valve of four-way piston (11)
Door (5), closes the first valve (6), starts two-way pump (8) and rotates forward, and the interior sample of measurement pipe (10) is all pushed into reaction bulb (13)
In, start the rotary blade (14) of reaction bulb (13) bottom；
4) residual gas filling eudiometer tube：Start two-way pump (8) reversion, draw back whole residual gas to eudiometer tube (10) upper end；
5) oxygen concentration is measured：B2 mouths, first valve (6) of stop,threeway (9) are opened, four-way piston (11), the second valve is closed
Door (5), opens stepper motor (2), and adjustment level is concordant with liquid level same eudiometer tube (10) liquid level of fluid infusion bottle (7), then
Reading, measures oxygen concentration.
9. according to claim 8 using the high accuracy, the test method of automation oxygen concentration detector that are based on cuprammonium process,
Characterized in that, also including measuring method of the oxygen concentration more than 99%：
If oxygen concentration is more than 99%, starts two-way pump (8) and rotate forward, make the very small amount residual gas in eudiometer tube (10) enter four
Measurement pipe (18) above the A3 ports of logical piston (11), after residual gas fully enters measurement pipe (18), closes four-way and lives
Plug (11), by the scale of measurement pipe (18) concentration of oxygen is measured.
10. it is according to claim 8 to adopt high accuracy, the test side of automation oxygen concentration detector for being based on cuprammonium process
Method, it is characterised in that also including the automatic leveling step of double horizontal liquid levels between level and the same eudiometer tube (10) of fluid infusion bottle (7)：
On the basis of to fix the second workbench (15), the height between the first workbench (3) and the second workbench (15), note are measured
For the elemental height H20 of the first workbench (3), when stepper motor (2) is moved up and down, using the second Measuring light screen sensor
(17) and the first Measuring light screen sensor (16) respectively real-time detection level and fluid infusion bottle (7) liquid level and eudiometer tube (10) liquid level with
Height between second workbench (15), when both height are the same, then the liquid level and eudiometer tube (10) of level and fluid infusion bottle (7)
Liquid level keep concordant；
Eudiometer tube (10) liquid level is H1=H11+H12, wherein, H11 is the first Measuring light screen sensor (16) bottom and the
Height between two workbench (15), H12 is eudiometer tube (10) liquid level and the first Measuring light screen sensor (16) of real-time measurement
The height of bottom；
The height of the liquid level in level and fluid infusion bottle (7) is H2=H20+H21+H22+H23, wherein, H20 is the first workbench
(3) elemental height, H21 is the height that the first workbench (3) is moved in the presence of stepper motor, can be by the step of stepper motor
Obtain away from calculating with step number, H22 is the height between the second Measuring light screen sensor (17) bottom and the first workbench (3), H23
It is the level and fluid infusion bottle (7) liquid level and the height of the second Measuring light screen sensor (17) bottom of real-time measurement.
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