CN103235616A - Thermostatic protector for electrochemical sensor - Google Patents
Thermostatic protector for electrochemical sensor Download PDFInfo
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- CN103235616A CN103235616A CN2013101117304A CN201310111730A CN103235616A CN 103235616 A CN103235616 A CN 103235616A CN 2013101117304 A CN2013101117304 A CN 2013101117304A CN 201310111730 A CN201310111730 A CN 201310111730A CN 103235616 A CN103235616 A CN 103235616A
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- gas outlet
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Abstract
The invention relates to a thermostatic protector for an electrochemical sensor. The thermostatic protector comprises a shell, an intake pipe, an exhaust pipe, and a resistance wire. The intake pipe and the exhaust pipe are communicated with the shell. The resistance wire is wound outside the shell. The shell is a cavity member formed by screwing a base with a top cover. The base is covered with an insulation sleeve. The resistance wire is wound on the outer wall of the base. The base is provided with an air inlet and an air outlet inside. The intake pipe is wound outside the resistance wire and is then communicated with the air inlet. The exhaust pipe is communicated with the air outlet. An outer port of the intake pipe and an outer port of the exhaust pipe extend out of the insulation sleeve. The thermostatic protector is suitable for operational application of electrochemical sensors in portable instruments or online monitor equipment at various gas ambient temperatures. A thermostatic measuring system of the electrochemical sensor has low requirement on operating power supply, current signals are processed into 4-20mA standard signals through a circuit so as to be output, the thermostatic protector can be directly integrated to gas detection instruments and equipment for data exchange, the influence of temperature upon the electrochemical sensors is eliminated to the maximum extent, and measurement accuracy is increased effectively.
Description
Technical field
The present invention relates to a kind of attemperator, relate in particular to a kind of constant temperature protective device of electrochemical sensor.
Background technology
Electrochemical sensor the earliest can be traced back to the 1950's, is used for oxygen monitoring at that time.To 20th century the mid-80s, the small electrical chemical sensor begins for detection of the multiple different toxic gases in the PEL scope, and has demonstrated good sensitivity and selectivity.At present, various electrochemical sensors are widely used in many on-line monitoring systems and Portable Measurement Instrument.
Typical electrochemical sensor is made up of sensing electrode and counter electrode, and is separated by a thin electrolyte layers.Gas at first reacts by the small perforate of hollow billet type and sensor, is the hydrophobic barrier then, finally arrives electrode surface.Sensing electrode can adopt oxidation mechanism or reduction mechanism.These reactions are carried out catalysis by the electrode material that designs at tested gas.By the resistor that connects between electrode, the electric current that is directly proportional with tested gas concentration can flow between positive pole and negative pole.Measure this electric current and can determine gas concentration.Because can produce electric current in this process, electrochemical sensor often is called as electric current gas sensor or micro fuel cell again.
Electrochemical sensor is very responsive to temperature, and generally speaking, when temperature was higher than 25 ° of C, sensor reading was higher; When being lower than 25 ° of C, reading is lower.Temperature effect is generally every degree centigrade 0.5% to 1.0%, decides on manufacturer and sensor type.Temperature can exert an influence to range and baseline output at zero point.
All be to adopt appearance to install heat-insulation layer additional simply to be incubated to this kind electrochemical sensor now, effect is undesirable.
Summary of the invention
The object of the present invention is to provide a kind of cost low, can be incubated electrochemical sensor, guarantee the constant temperature protective device of the electrochemical sensor of its steady operation.
The object of the present invention is achieved like this: the constant temperature protective device of electrochemical sensor; comprise housing; the draft tube that is communicated with housing, gas outlet are wrapped in the outer resistance wire of housing, the cavity body that housing is spun and formed by base and top cover; outside base, be with muff; base outer wall is wound with resistance wire, offers air intake opening and gas outlet in the base, and draft tube is wrapped in resistance wire and is communicated with air intake opening more outward; gas outlet is communicated with the gas outlet, and draft tube and gas outlet external port are stretched out muff.
Because carry out technique scheme, the present invention is suitable for the job applications of electrochemical sensor under all gases environment temperature in portable instrument or the on-line monitoring equipment.The constant temperature measurement system of electrochemical sensor is less demanding to working power, current signal is the standard signal output of 4～20mA through processing of circuit, can directly be incorporated in the instrument and equipment that gas detects and carry out the data butt joint, eliminate the influence of temperature to electrochemical sensor to greatest extent, improved measuring accuracy effectively.
Description of drawings: technical scheme of the present invention is provided by following drawings and Examples:
Fig. 1 is the constant temperature protective device structural representation of electrochemical sensor.
Legend: 1, draft tube, 2, muff, 3, electrochemical sensor, 4, circuit board, 5, top cover, 6, the circuit chamber, 7, incubation cavity, 8, base, 9, resistance wire, 10, gas outlet, 11, temperature-sensing probe.
Embodiment:
The present invention is not subjected to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and actual conditions.
Embodiment: as shown in Figure 1, the constant temperature protective device of electrochemical sensor comprises housing, and the draft tube 1 that is communicated with housing, gas outlet 10 are wrapped in the outer resistance wire 9 of housing.The cavity body that housing is spun and formed by base 8 and top cover 5, top cover 5 internal cavities are the circuit chamber, installing circuit board 4 in it, base 8 internal cavities are incubation cavity 7, installing electrochemical sensor 3 in it, outside base 8, be with muff 2, fill heat-preservation cotton in the muff 2, base 8 outer walls are wound with resistance wire 9, offer air intake opening and gas outlet in the base 8, draft tube 1 is wrapped in outside the resistance wire 9 and is communicated with air intake opening, and gas outlet 10 is communicated with the gas outlet.Draft tube 1 and gas outlet 10 external port are stretched out muff 2.Offer a through hole in base 8 bottom surfaces, the hole interpolation has temperature-sensing probe 11, and temperature-sensing probe 11 adopts the PT1000 platinum resistance, and its temperature-sensitive trueness error is no more than 0.5%.
During use, with resistance wire 9 energising, thus to heating in the muff 2, and then will enter air heat in the draft tube 1, make that the air that enter in the incubation cavity 7 are hot-air.Can accurately know temperature in the incubation cavity 7 by temperature-sensing probe 11, thereby the air size of current changes the heat that resistance wire 9 produces, and regulates air themperature in the draft tube 1, changes temperature in the incubation cavity 7.
Above technical characterictic has constituted most preferred embodiment of the present invention, and it has stronger adaptability and best implementation result, can increase and decrease inessential technical characterictic according to actual needs, satisfies the needs of different situations.
Claims (4)
1. the constant temperature protective device of an electrochemical sensor; comprise housing; the draft tube that is communicated with housing, gas outlet are wrapped in the outer resistance wire of housing, it is characterized in that: the cavity body that housing is spun and formed by base and top cover; outside base, be with muff; base outer wall is wound with resistance wire, offers air intake opening and gas outlet in the base, and draft tube is wrapped in resistance wire and is communicated with air intake opening more outward; gas outlet is communicated with the gas outlet, and draft tube and gas outlet external port are stretched out muff.
2. the constant temperature protective device of electrochemical sensor as claimed in claim 1, it is characterized in that: the top cover internal cavity is the circuit chamber, installing circuit board in it, the base internal cavity is incubation cavity, installing electrochemical sensor in it.
3. the constant temperature protective device of electrochemical sensor as claimed in claim 1 is characterized in that: fill heat-preservation cotton in the muff.
4. the constant temperature protective device of electrochemical sensor as claimed in claim 1, it is characterized in that: offer a through hole at base end face, the hole interpolation has temperature-sensing probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101117304A CN103235616A (en) | 2013-04-02 | 2013-04-02 | Thermostatic protector for electrochemical sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101117304A CN103235616A (en) | 2013-04-02 | 2013-04-02 | Thermostatic protector for electrochemical sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103235616A true CN103235616A (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101117304A Pending CN103235616A (en) | 2013-04-02 | 2013-04-02 | Thermostatic protector for electrochemical sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103235616A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593732A (en) * | 2018-07-13 | 2018-09-28 | 苏州天信德环保科技有限公司 | A kind of factory's circle peculiar smell monitoring gas flow guiding slot and monitoring device |
| CN114019116A (en) * | 2022-01-10 | 2022-02-08 | 云图启迪(南京)科技有限公司 | Gas monitoring devices is pressed in controllable control by temperature change |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2874488Y (en) * | 2006-02-27 | 2007-02-28 | 武汉四方光电科技有限公司 | Heat conductive gas detector |
| CN200953006Y (en) * | 2006-09-08 | 2007-09-26 | 薛文伟 | Diffusion type heat contact thermal conducting pool |
| JP2007309905A (en) * | 2006-05-22 | 2007-11-29 | Ngk Spark Plug Co Ltd | Gas detector |
| CN101655472A (en) * | 2009-10-09 | 2010-02-24 | 丁五行 | Constant temperature insulation system for thermal conductivity gas detection |
| CN203232334U (en) * | 2013-04-02 | 2013-10-09 | 国家电网公司 | Constant temperature protective device of electrochemical sensor |
-
2013
- 2013-04-02 CN CN2013101117304A patent/CN103235616A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2874488Y (en) * | 2006-02-27 | 2007-02-28 | 武汉四方光电科技有限公司 | Heat conductive gas detector |
| JP2007309905A (en) * | 2006-05-22 | 2007-11-29 | Ngk Spark Plug Co Ltd | Gas detector |
| CN200953006Y (en) * | 2006-09-08 | 2007-09-26 | 薛文伟 | Diffusion type heat contact thermal conducting pool |
| CN101655472A (en) * | 2009-10-09 | 2010-02-24 | 丁五行 | Constant temperature insulation system for thermal conductivity gas detection |
| CN203232334U (en) * | 2013-04-02 | 2013-10-09 | 国家电网公司 | Constant temperature protective device of electrochemical sensor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593732A (en) * | 2018-07-13 | 2018-09-28 | 苏州天信德环保科技有限公司 | A kind of factory's circle peculiar smell monitoring gas flow guiding slot and monitoring device |
| CN114019116A (en) * | 2022-01-10 | 2022-02-08 | 云图启迪(南京)科技有限公司 | Gas monitoring devices is pressed in controllable control by temperature change |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130807 |