CN202018434U - Combined parameter tester for methane preparation - Google Patents
Combined parameter tester for methane preparation Download PDFInfo
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- CN202018434U CN202018434U CN2011200451101U CN201120045110U CN202018434U CN 202018434 U CN202018434 U CN 202018434U CN 2011200451101 U CN2011200451101 U CN 2011200451101U CN 201120045110 U CN201120045110 U CN 201120045110U CN 202018434 U CN202018434 U CN 202018434U
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/26—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pH
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/30—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration
- C12M41/34—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration of gas
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/48—Automatic or computerized control
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The utility model discloses a combined parameter tester for methane preparation. The combined parameter tester comprises a displayer, a keyboard and a circuit unit, wherein the displayer and the keyboard are mounted on a shell; the circuit unit is mounted in the shell; the keyboard and the displayer respectively serving as an input signal control device and an output signal display device are connected with the circuit unit; and the circuit unit comprises a CPU, a tank liquid PH value measuring circuit, a methane concentration measuring circuit, a methane concentration LEL (Lower Explosive Limit) percentage concentration measurement warning circuit (namely, a methane percentage LEL concentration measurement warning circuit), a hydrogen sulfide gas concentration measuring circuit, and an A/D conversion and interface circuit. By adopting the combined parameter tester with high integration level, reliability, measuring accuracy and stability, the technical parameters during the methane preparation can be intermittently measured; and the combined parameter tester can be accessed into a control area network via a communication interface to perform data communication, so that intelligent management and control are realized, the cost is effectively saved and the use convenience is improved.
Description
Technical field
Parameter determinator during the utility model relates to biogas production and uses is specifically related to sulfureted hydrogen gas concentration and the incorporate biogas production parameter of biogas leakage alarm combine measured instrument in fire damp concentration, pond liquid pH value, the pond.
Background technology
In the biogas production, sulfureted hydrogen gas concentration is most important parameter in methane concentration, pond liquid pH value and the pond, can determine when the replacing raw materials for production, improve reaction environment by it, thereby reach maximum production capacity; During biogas uses,, gently then influence health Jiankang if take place to reveal then can cause the accident, heavy then cause equipment loss, even jeopardize people's life.At present, domestic used surveying instrument mostly is the autonomous device of function singleness greatly, carries out concentration, pH value measurement or leak detection operation respectively, and precision is lower, and less stable is used inconvenience, and total price is also higher.
Summary of the invention
The purpose of this utility model is to produce in the process at present biogas, domestic used surveying instrument mostly is the autonomous device of function singleness greatly, carry out concentration, pH value measurement or leak detection operation respectively, existing precision is lower, less stable, use inconvenient and total price problem of higher, a kind of biogas production parameter combine measured instrument is proposed, the detection and the biogas that integrate sulfureted hydrogen gas concentration in methane concentration, pond liquid pH value, the pond are hunted leak, produce with using gamut and monitor, effectively save cost, improve ease of use.
The technical solution of the utility model is:
A kind of biogas production parameter combine measured instrument, it comprises housing, display, keyboard and circuit unit, and display and keyboard are installed on the housing, and circuit unit is installed in the housing; Keyboard and display are exported the connecting circuit unit as the control signal input and the shows signal of biogas production parameter combine measured instrument respectively, described circuit unit comprises central processing unit, pond liquid pH value metering circuit, the methane concentration metering circuit, methane concentration lower explosive limit percent concentration is measured warning circuit namely for methane %LEL measurement of concetration warning circuit, sulfureted hydrogen gas concentration metering circuit and A/D conversion and interface circuit, pond liquid pH value metering circuit, the methane concentration metering circuit, methane %LEL measurement of concetration warning circuit and sulfureted hydrogen gas concentration metering circuit are gathered the relevant parameter signal as the parameter measurement signal end of biogas production parameter combine measured instrument, pond liquid pH value metering circuit, the methane concentration metering circuit, the signal output part of methane %LEL measurement of concetration warning circuit and sulfureted hydrogen gas concentration metering circuit all links to each other with the respective signal input end of interface circuit with the A/D conversion, and the A/D conversion links to each other with the I/O port of central processing unit with the control signal output ends of interface circuit.
Biogas production parameter combine measured instrument of the present utility model also comprises communication interface, and display, keyboard and communication interface all link to each other with the corresponding I/O port of central processing unit in the circuit unit.
Communication interface of the present utility model is RS485 or RS232 communication interface, is used for communicating with supervisory controller.
Circuit unit of the present utility model also comprises under-voltage and overload protecting circuit and charging feed circuit; the charging feed circuit are connected to form by charging circuit, feed circuit and mu balanced circuit, and the charging feed circuit provide stable working power for biogas production parameter combine measured instrument.
The pond liquid pH value measurement biasing circuit that pond of the present utility model liquid pH value metering circuit is made of R41 and R42 is connected pH value potential electrode J41 and forms, pH value potential electrode J41 gathers biogas as the signal input of pond liquid pH value metering circuit and produces the pH value parameter signal in pond, the output terminal of pH value potential electrode J41 links to each other with the input end of amplifying circuit, the output terminal of amplifying circuit links to each other with the respective signal input end of interface circuit with the A/D conversion, the A/D conversion links to each other with central processing unit with the signal output part of interface circuit, and central processing unit is handled and exported by display.
Methane concentration metering circuit of the present utility model comprises sensor CGQ1 and the methane concentration measuring bridge that is made of resistance R 20, R21, potentiometer J10, sensor CGQ1 gathers the methane concentration parameter signal, after the sample circuit sampling by the methane concentration measuring bridge, link to each other with the input end of amplifying circuit, the output terminal of amplifying circuit links to each other with the respective signal input end of interface circuit with the A/D conversion, the A/D conversion links to each other with central processing unit with the signal output part of interface circuit, and central processing unit is handled and exported by display.
Methane %LEL measurement of concetration electric bridge and hummer that methane %LEL measurement of concetration warning circuit of the present utility model comprises sensor CGQ2, is made of electric R20, R21, potentiometer J10, after sensor CGQ2 gathers the sample circuit sampling of methane concentration parameter signal by methane %LEL measurement of concetration electric bridge, link to each other with the input end of amplifying circuit, the output terminal of amplifying circuit links to each other with the respective signal input end of interface circuit with the A/D conversion, the A/D conversion links to each other with central processing unit with the signal output part of interface circuit, and central processing unit is handled and exported by display.
Sensor CGQ1 of the present utility model is a heat conduction formula sensor, and sensor CGQ2 is a catalytic combustion type sensor.
The sulfureted hydrogen gas concentration metering circuit comprises electrochemical sensor S31 and metering circuit in the pond of the present utility model, electrochemical sensor S31 gathers the sulfureted hydrogen gas concentration parameter signal, the output terminal of electrochemical sensor S31 links to each other with the input end of amplifying circuit by metering circuit, the output terminal of amplifying circuit links to each other with the respective signal input end of interface circuit with the A/D conversion, the A/D conversion links to each other with central processing unit with the signal output part of interface circuit, and central processing unit is handled and exported by display.
Biogas production parameter combine measured instrument of the present utility model also comprises temperature sensor and interface circuit, in the measuring process, gather temperature signal under the measurement environment by temperature sensor and interface circuit, and other parameters of being surveyed are revised by central processing unit.
The beneficial effects of the utility model:
When the utility model uses, by keyboard function is set, central processing unit is handled the transducing signal of corresponding function, and shows on display.
The utility model integrated level, reliability, measuring accuracy and stability are high, can carry out the measurement at intermittence by the technical parameter in operation process to methane production and use equipment, also can carry out data communication by communication interface Access Control LAN (Local Area Network), realize intelligent management and control, effectively save cost, improve ease of use.
Description of drawings
Fig. 1 is the theory diagram of the utility model biogas production parameter combine measured instrument.
Fig. 2 is the circuit diagram of charging feed circuit of the present utility model.
Fig. 3 is the circuit diagram that methane concentration metering circuit of the present utility model and methane concentration lower explosive limit percent concentration are measured warning circuit namely for methane %LEL measurement of concetration warning circuit.
Fig. 4 is the circuit diagram of pond of the present utility model liquid pH value metering circuit.
Fig. 5 is the circuit diagram of sulfureted hydrogen gas concentration metering circuit of the present utility model.
Among the figure: 1. central processing unit; 2. display; 3. keyboard, 4. under-voltage and overload protecting circuit, 5. communication interface; 6. pond liquid pH value metering circuit; 7. methane concentration metering circuit, 8. methane %LEL measurement of concetration warning circuit, 9. sulfureted hydrogen gas concentration metering circuit; 10. charging feed circuit, 11. A/D conversion and interface circuit.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1, a kind of biogas production parameter combine measured instrument, it comprises housing, display 2, keyboard 3 and circuit unit, display 2, communication interface 5(adopt RS485 or RS232 communication interface, be used for communicating with supervisory controller) and keyboard 3 be installed in housing, circuit unit is installed in the housing; Keyboard 3 and display 2 are exported the connecting circuit unit as the control signal input and the shows signal of biogas production parameter combine measured instrument respectively, described circuit unit comprises that central processing unit 1(adopts AMD Athlon X2 Processor 7750), pond liquid pH value metering circuit 6, methane concentration metering circuit 7, methane concentration lower explosive limit percent concentration is measured warning circuit namely for methane %LEL measurement of concetration warning circuit 8, sulfureted hydrogen gas concentration metering circuit 9 and A/D conversion are adopted AD7654 with interface circuit 11(A/D conversion, interface circuit adopts the conventional interface circuit of AD7654 and single-chip microcomputer), pond liquid pH value metering circuit 6, methane concentration metering circuit 7, methane %LEL measurement of concetration warning circuit 8 and sulfureted hydrogen gas concentration metering circuit 9 are gathered the relevant parameter signal as the parameter measurement signal end of biogas production parameter combine measured instrument, pond liquid pH value metering circuit 6, methane concentration metering circuit 7, the signal output part of methane %LEL measurement of concetration warning circuit 8 and sulfureted hydrogen gas concentration metering circuit 9 all links to each other with the respective signal input end of interface circuit 11 with the A/D conversion, and the A/D conversion links to each other with the I/O port of central processing unit 1 with the control signal output ends of interface circuit 11.
Circuit unit of the present utility model also comprises under-voltage and overload protecting circuit 4 and charging feed circuit 10; as shown in Figure 2; charging feed circuit 10 are connected to form by charging circuit, feed circuit and mu balanced circuit, and charging feed circuit 10 provide stable working power for biogas production parameter combine measured instrument.
As shown in Figure 4, the pond liquid pH value measurement biasing circuit that pond of the present utility model liquid pH value metering circuit 6 is made of R41 and R42 is connected pH value potential electrode J41 and forms, pH value potential electrode J41 gathers biogas as the signal input of pond liquid pH value metering circuit 6 and produces the pH value parameter signal in pond, the output terminal of pH value potential electrode J41 links to each other with the input end of amplifying circuit (adopting the normal signal amplifying circuit), the output terminal of amplifying circuit links to each other with the respective signal input end of interface circuit 11 with the A/D conversion, the A/D conversion links to each other with central processing unit 1 with the signal output part of interface circuit 11, and central processing unit 1 is handled and exported by display 2.
As shown in Figure 3, methane concentration metering circuit 7 of the present utility model comprises sensor CGQ1 and by resistance R 20, R21, the methane concentration measuring bridge that potentiometer J10 constitutes, sensor CGQ1 is a heat conduction formula sensor, sensor CGQ1 gathers the methane concentration parameter signal, after the sample circuit sampling by the methane concentration measuring bridge, link to each other with the input end of amplifying circuit (adopting the normal signal amplifying circuit), the output terminal of amplifying circuit links to each other with the respective signal input end of interface circuit 11 with the A/D conversion, the A/D conversion links to each other with central processing unit 1 with the signal output part of interface circuit 11, and central processing unit 1 is handled and exported by display 2.
As shown in Figure 3, methane %LEL measurement of concetration warning circuit 8 of the present utility model comprises sensor CGQ2, by electric R20, R21, methane %LEL measurement of concetration electric bridge and hummer that potentiometer J10 constitutes, sensor CGQ2 is a catalytic combustion type sensor, after sensor CGQ2 gathers the sample circuit sampling of methane concentration parameter signal by methane %LEL measurement of concetration electric bridge, link to each other with the input end of amplifying circuit (adopting the normal signal amplifying circuit), the output terminal of amplifying circuit links to each other with the respective signal input end of interface circuit 11 with the A/D conversion, the A/D conversion links to each other with central processing unit 1 with the signal output part of interface circuit 11, and central processing unit 1 is handled and exported by display 2.
As shown in Figure 5, sulfureted hydrogen gas concentration metering circuit 9 comprises electrochemical sensor S31 and metering circuit in the pond of the present utility model, electrochemical sensor S31 gathers the sulfureted hydrogen gas concentration parameter signal, the output terminal of electrochemical sensor S31 links to each other by the input end of metering circuit with amplifying circuit (adopting the normal signal amplifying circuit), the output terminal of amplifying circuit links to each other with the respective signal input end of interface circuit 11 with the A/D conversion, the A/D conversion links to each other with central processing unit 1 with the signal output part of interface circuit 11, and central processing unit 1 is handled and exported by display 2.
Biogas production parameter combine measured instrument of the present utility model also comprises temperature sensor and interface circuit 12, in the measuring process, the temperature signal of gathering under the measurement environment by temperature sensor and interface circuit 12, and revised by 1 pair of other parameter of being surveyed of central processing unit.
During concrete enforcement:
As shown in Figure 1, this analyzer is made up of housing, display, keyboard, communication interface and circuit unit, and display, keyboard and communication interface are installed on housing, and circuit unit is installed in housing, display, keyboard and communication interface connecting circuit unit, whole formation analyzer; The electric loop of circuit unit is interconnected to form by connecting display 2, keyboard 3, under-voltage and overload protecting circuit 4, communication interface 5, charging feed circuit 10, methane concentration metering circuit 7, pond liquid pH value metering circuit 6, methane %LEL measurement of concetration warning circuit 8 and sulfureted hydrogen gas concentration metering circuit 9 and A/D conversion and interface circuit 11 on the central processing unit 1, and display, keyboard and communication interface are connected central processing unit 1 by display 2, keyboard 3, communication interface 5 respectively; Charging feed circuit 10 are connected to form by charging circuit and feed circuit and mu balanced circuit; Pond liquid pH value metering circuit 6 is measured biasing circuit connection pH value potential electrode by pond liquid pH value and is formed, pH value potential electrode acquisition parameter signal send central processing unit to handle and show behind amplification and A/D conversion and interface circuit 11, in the measuring process, gather the temperature signal under the measurement environment simultaneously, and the data of being surveyed are revised.When pH value is measured, need regularly to adopt titer to demarcate, to improve measuring accuracy; Methane concentration metering circuit 7 connects measuring bridge by heat conduction formula sensor and forms, and heat conduction formula sensor acquisition concentration parameter signal send central processing unit to handle and show behind measuring bridge, amplifying circuit and A/D conversion and interface circuit 11; Methane %LEL measurement of concetration warning circuit 8 connects measuring bridge by catalytic combustion type sensor and hummer and forms, catalytic combustion type sensor is gathered the concentration parameter signal and is sent central processing unit to handle behind measuring bridge, amplifying circuit and A/D conversion and interface circuit 11, and show with %LEL concentration, %LEL concentration is warned by the hummer pronunciation to setting index; Sulfureted hydrogen gas concentration metering circuit 9 connects metering circuit by electrochemical sensor and forms, and electrochemical sensor is gathered the concentration parameter signal and sent central processing unit to handle and show behind metering circuit amplification and A/D conversion and interface circuit 11.
During use, by keyboard function is set, central processing unit is handled the transducing signal of corresponding function, and shows on display.
The utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.
Claims (10)
1. biogas production parameter combine measured instrument, it comprises housing, display (2), keyboard (3) and circuit unit, and display (2) and keyboard (3) are installed on the housing, and circuit unit is installed in the housing; Keyboard (3) and display (2) are exported the connecting circuit unit as the control signal input and the shows signal of biogas production parameter combine measured instrument respectively, it is characterized in that: described circuit unit comprises central processing unit (1), pond liquid pH value metering circuit (6), methane concentration metering circuit (7), methane concentration lower explosive limit percent concentration is measured warning circuit namely for methane %LEL measurement of concetration warning circuit (8), sulfureted hydrogen gas concentration metering circuit (9) and A/D conversion and interface circuit (11), pond liquid pH value metering circuit (6), methane concentration metering circuit (7), methane %LEL measurement of concetration warning circuit (8) and sulfureted hydrogen gas concentration metering circuit (9) are gathered the relevant parameter signal as the parameter measurement signal end of biogas production parameter combine measured instrument, pond liquid pH value metering circuit (6), methane concentration metering circuit (7), the signal output part of methane %LEL measurement of concetration warning circuit (8) and sulfureted hydrogen gas concentration metering circuit (9) all links to each other with the respective signal input end of interface circuit (11) with the A/D conversion, and the A/D conversion links to each other with the I/O port of central processing unit (1) with the control signal output ends of interface circuit (11).
2. biogas production parameter combine measured instrument according to claim 1, it is characterized in that: described biogas production parameter combine measured instrument also comprises communication interface (5), and display (2), keyboard (3) and communication interface (5) all link to each other with the corresponding I/O port of central processing unit (1) in the circuit unit.
3. biogas production parameter combine measured instrument according to claim 2, it is characterized in that: described communication interface (5) is RS485 or RS232 communication interface, is used for communicating with supervisory controller.
4. biogas production parameter combine measured instrument according to claim 1; it is characterized in that: described circuit unit also comprises under-voltage and overload protecting circuit (4) and charging feed circuit (10); charging feed circuit (10) are connected to form by charging circuit, feed circuit and mu balanced circuit, and charging feed circuit (10) provide stable working power for biogas production parameter combine measured instrument.
5. biogas production parameter combine measured instrument according to claim 1, it is characterized in that: the pond liquid pH value measurement biasing circuit that described pond liquid pH value metering circuit (6) is made of R41 and R42 is connected pH value potential electrode J41 and forms, pH value potential electrode J41 gathers biogas as the signal input of pond liquid pH value metering circuit (6) and produces the pH value parameter signal in pond, the output terminal of pH value potential electrode J41 links to each other with the input end of amplifying circuit, the output terminal of amplifying circuit links to each other with the respective signal input end of interface circuit (11) with the A/D conversion, the A/D conversion links to each other with central processing unit (1) with the signal output part of interface circuit (11), and central processing unit (1) is handled and exported by display (2).
6. biogas production parameter combine measured instrument according to claim 1, it is characterized in that: methane concentration metering circuit (7) comprises sensor CGQ1 and by resistance R 20, R21, the methane concentration measuring bridge that potentiometer J10 constitutes, sensor CGQ1 gathers the methane concentration parameter signal, after the sample circuit sampling by the methane concentration measuring bridge, link to each other with the input end of amplifying circuit, the output terminal of amplifying circuit links to each other with the respective signal input end of interface circuit (11) with the A/D conversion, the A/D conversion links to each other with central processing unit (1) with the signal output part of interface circuit (11), and central processing unit (1) is handled and exported by display (2).
7. biogas production parameter combine measured instrument according to claim 1, it is characterized in that: methane %LEL measurement of concetration warning circuit (8) comprises sensor CGQ2, by electric R20, R21, methane %LEL measurement of concetration electric bridge and hummer that potentiometer J10 constitutes, after sensor CGQ2 gathers the sample circuit sampling of methane concentration parameter signal by methane %LEL measurement of concetration electric bridge, link to each other with the input end of amplifying circuit, the output terminal of amplifying circuit links to each other with the respective signal input end of interface circuit (11) with the A/D conversion, the A/D conversion links to each other with central processing unit (1) with the signal output part of interface circuit (11), and central processing unit (1) is handled and exported by display (2).
8. according to claim 6 or 7 described biogas production parameter combine measured instrument, it is characterized in that: described sensor CGQ1 is a heat conduction formula sensor, and sensor CGQ2 is a catalytic combustion type sensor.
9. biogas production parameter combine measured instrument according to claim 1, it is characterized in that: sulfureted hydrogen gas concentration metering circuit (9) comprises electrochemical sensor S31 and metering circuit in the described pond, electrochemical sensor S31 gathers the sulfureted hydrogen gas concentration parameter signal, the output terminal of electrochemical sensor S31 links to each other with the input end of amplifying circuit by metering circuit, the output terminal of amplifying circuit links to each other with the respective signal input end of interface circuit (11) with the A/D conversion, the A/D conversion links to each other with central processing unit (1) with the signal output part of interface circuit (11), and central processing unit (1) is handled and exported by display (2).
10. biogas production parameter combine measured instrument according to claim 1, it is characterized in that: described biogas production parameter combine measured instrument also comprises temperature sensor and interface circuit (12), in the measuring process, gather temperature signal under the measurement environment by temperature sensor and interface circuit (12), and other parameters of being surveyed are revised by central processing unit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200451101U CN202018434U (en) | 2011-02-23 | 2011-02-23 | Combined parameter tester for methane preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200451101U CN202018434U (en) | 2011-02-23 | 2011-02-23 | Combined parameter tester for methane preparation |
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| Publication Number | Publication Date |
|---|---|
| CN202018434U true CN202018434U (en) | 2011-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200451101U Expired - Fee Related CN202018434U (en) | 2011-02-23 | 2011-02-23 | Combined parameter tester for methane preparation |
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| Country | Link |
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| CN (1) | CN202018434U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147380A (en) * | 2011-02-23 | 2011-08-10 | 淮安市苏通市政机械有限公司 | Parameter combination tester for preparation of methane |
| CN103420470A (en) * | 2012-05-16 | 2013-12-04 | 沈阳中科韦尔腐蚀控制技术有限公司 | Automatic control system of pH value of process water media of oil refining equipment |
-
2011
- 2011-02-23 CN CN2011200451101U patent/CN202018434U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147380A (en) * | 2011-02-23 | 2011-08-10 | 淮安市苏通市政机械有限公司 | Parameter combination tester for preparation of methane |
| CN103420470A (en) * | 2012-05-16 | 2013-12-04 | 沈阳中科韦尔腐蚀控制技术有限公司 | Automatic control system of pH value of process water media of oil refining equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111026 Termination date: 20180223 |