CN102401809B - Carbon monoxide detector and application of detector in voltage test pencil - Google Patents
Carbon monoxide detector and application of detector in voltage test pencil Download PDFInfo
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- CN102401809B CN102401809B CN 201110248097 CN201110248097A CN102401809B CN 102401809 B CN102401809 B CN 102401809B CN 201110248097 CN201110248097 CN 201110248097 CN 201110248097 A CN201110248097 A CN 201110248097A CN 102401809 B CN102401809 B CN 102401809B
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Abstract
The invention which relates to the technical field of detection discloses a carbon monoxide detector. The carbon monoxide detector comprises a gas sensitive resistor, and an induction thread of the gas sensitive resistor comprises 15% of a mixed metal salt catalyst which comprises 70% of Pt, 25% of Au and 5% of Ag. According to the invention, the carbon monoxide detector which is improved has the characteristics of satisfication of the operation environment of voltage testers, low power consumption and small volume, so the combination of the carbon monoxide detector and the voltage test pencil becomes possible. The invention also provides the voltage test pencil which integrates the carbon monoxide detector provided in the invention, and the voltage test pencil which can be integrated with an illumination module can be applied to the voltage test work of dangerous areas. Compared with present voltage test pencils, the voltage test pencil of the invention can be used when light in the work area is not clear, so the electric shock danger of workers is prevented; and the worker can be timely promoted to rapidly depart to guarantee the safety when carbon monoxide which has a standard-exceeded concentration may initiate the explosion danger and the positioning danger once carbon monoxide encounters electric sparks.
Description
Technical field
The present invention relates to the detection technique field, be particularly useful for toxic gas is detected.
Background technology
The site environment that need to overhaul electrical equipment, safeguard may exist harmful toxic gas, for example carbon monoxide sometimes.Due to the flammable and toxicity of CO gas, operating personnel's health and life has been produced certain threat in this type of scene.As add that the dangerous operation ambient lighting conditions is not enough, and light source lacks, in narrow and small regulator cubicle during operation, and the danger that the unclear staff of sight line is got an electric shock.
Thereby catalytic combustion type gas sensor, Electro-chemical Gas Sensor that existing carbon monoxide detector uses macrocell power supply basically produce chemical reaction by the high temperature of power supply energy heat induced wire electrode to 300 ℃～400 ℃, reach the purpose of test carbonomonoxide concentration, its energy consumption is large, and volume is large.
Existing test pencil generally only possesses simple examination Electricity Functional; when may there be the danger that carbonomonoxide concentration exceeds standard in the perform region; just can't be for operating personnel provide enough protections, if to run into electric spark very likely explosion caused in case carbonomonoxide concentration exceeds standard simultaneously.
There are following problems in actual applications in carbon monoxide detector used in the prior art and test pencil:
1. existing carbon monoxide detector energy consumption is large, volume is large.
Large due to existing carbon monoxide detector energy consumption, volume is large, make it not be made into one with test pencil, even will both be combined into one reluctantly, because volume is large, can make operating personnel be difficult for grasping testing tool in the examination electric process, can not detect the electric leakage situation of narrow and small position; If allow operating personnel separately carry both, due to the hand-held test pencil of operating personnel, observe test pencil neon tube and check point, at this moment, energy all concentrates on the test pencil part of hand end, if will notice constantly more also whether the carbon monoxide detector that carries detects toxic gas with it, can cause operating personnel easily to divert attention, undetected possibility occuring, and separately carry the burden that has increased operating personnel, is unfavorable for detecting in the place of circumstance complication.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of carbon monoxide detector, it has the hybrid alloys silk that adopts the zirconia comprise 25% mixed metal salt catalyst alloy silk and 75% and platinum as the highly sensitive gas sensing resistance of gas sensing resistance induction thread, sensitivity when making carbon monoxide detector provided by the invention to obtain low temperature, and strengthen the susceptibility to CO gas, thereby make the volume of carbon monoxide detector small and exquisite, and low in energy consumption, be able to be arranged at the characteristics on test pencil.
For solving the problems of the technologies described above, the invention provides a kind of carbon monoxide detector, comprise gas sensing resistance, in described gas sensing resistance, the composition of induction silk comprises: the hybrid alloys silk of 25% mixed metal salt catalyst alloy silk and 75% zirconia and platinum.
Above-mentioned base case is carried out preferred technical scheme is, the composition of described mixed metal salt catalyst alloy silk comprises: 70% platinum, 25% gold and 5% silver.
It is that the composition of the hybrid alloys silk of described zirconia and platinum comprises that such scheme is made further preferred technical scheme: 68% zirconia and 32% platinum.
Such scheme is made further preferred technical scheme is, the length of described gas sensing resistance induction silk is 1mm, and diameter is 0.06mm to 0.1mm.
The present invention also provides a kind of test pencil, comprises nib and a body; Also comprise above-mentioned carbon monoxide detector; Described carbon monoxide detector is arranged at it described pen.
It is also to comprise lighting module that said structure is carried out improved technical scheme;
Described lighting module is arranged at it described pen, and lighting module comprises LED illuminating lamp, power supply circuit, LED lighting lamp control switch;
Described LED illuminating lamp is connected with described LED lighting lamp control switch by described power supply circuit, the supply module in the described carbon monoxide detector of power supply circuit access.
The technical scheme that said structure is further improved is that the electric capacity that adopts in the power supply circuit in described lighting module is SMD metal capacitance; Or,
The circuit that power supply circuit in described lighting module adopts is 90% silver coating circuit; Or,
The electric capacity that adopts in power supply circuit in described lighting module is SMD metal capacitance; And the circuit that the power supply circuit in described lighting module adopts is 90% silver coating circuit.
Said structure is carried out further improved technical scheme again is, described lighting module also comprises the on-off circuit that metalized lamp rod and electric capacity cut off power supply;
Described metalized lamp rod is connected the described power supply circuit of rear access with the on-off circuit that described electric capacity cuts off power supply;
Described LED illuminating lamp is connected with metalized lamp rod;
The metal part of metalized lamp rod connects the neon tube of test pencil by wire.
It is also to comprise mounting box that said structure is carried out again further improved technical scheme again;
Described carbon monoxide detector is arranged at it described pen by described mounting box;
Be provided with the pilot lamp viewing area on the mounting box panel, detect the hole, warning articulating region, button setting area;
Described pilot lamp viewing area comprises the electric pilot lamp of examination and alarm lamp, and described examination electricity pilot lamp is connected with described nib, and described alarm lamp is connected with the gas sensing resistance of carbon monoxide detector;
The gas sensing resistance of described carbon monoxide detector is arranged in detection hole on described mounting box panel;
Described warning articulating region is provided with hummer, and described hummer is connected with the gas sensing resistance of carbon monoxide detector by circuit;
Described LED lighting lamp control switch is arranged in button setting area on described mounting box panel.
Beneficial effect of the present invention is:
1. the present invention comprises that by employing the hybrid alloys silk of the zirconia of 25% mixed metal salt catalyst alloy silk and 75% and platinum is as the highly sensitive gas sensing resistance of gas sensing resistance induction silk, sensitivity when making carbon monoxide detector provided by the invention to obtain low temperature, and strengthen the susceptibility to CO gas, make carbon monoxide detector volume little, and low in energy consumption.And, hybrid alloys silk by adopting zirconia and platinum, the hybrid alloys silk of Jin Yuyin are as the induction silk of the gas sensing resistance of carbon monoxide detector in the present invention, reached the purpose that under normal temperature, resistance wire reduces along with the concentration of carbon monoxide, low-power consumption and microminiaturized purpose have been realized, solved that carbon monoxide detector energy consumption of the prior art is large, bulky problem, thereby be able to be arranged at the purpose on test pencil.
2. the carbon monoxide detector that provides in the present invention, the induction silk of its gas sensing resistance can be set to very little, length is 1mm, diameter is that the gas sensing resistance induction silk provided by the present invention of 0.06mm to 0.1mm can both guarantee detection sensitivity, further reduced the power consumption of this device, can satisfy by little supply module its practical effect, thereby can make the volume microminiaturization of this carbon monoxide detector, be easier to be arranged on test pencil.
3. the present invention also provides a kind of test pencil, and it the is integrated carbon monoxide detector that provides in the present invention has solved large because of the carbon monoxide detector volume in the prior art, energy consumption and can not be arranged at greatly the problem on test pencil.Thereby make operating personnel to adopt test pencil to detect by this device of easy manipulation in the environment that may have CO gas, guarantee its personal safety.
4. be provided with the test pencil of carbon monoxide detector, can also the self illumination light source.Supply module in the power supply circuit of lighting module access carbon monoxide detector under guaranteeing that examination electricity, Carbon Monoxide Detection, illumination three functions module can both the prerequisites of stable operation, makes the one-piece construction of this device compacter.Guarantee that test pencil part, illumination section and carbon monoxide detector three parts can combine, assurance is not too large with the volume of the test pencil of carbon monoxide detector and LED illuminating lamp again simultaneously.Integrated the present invention of lighting module can be not enough in the dangerous operation ambient lighting conditions, carry out operation under condition that light source lacks.During operation, can avoid the danger that the unclear staff of sight line is got an electric shock in narrow and small regulator cubicle.
5. the present invention is low in energy consumption.The low-power consumption of lighting module is embodied in: power supply circuit is 90% silver coating circuit; Electric capacity in power supply circuit is all SMD metal capacitance; LED light source is not partly single P-N by the LED light of binding up one's hair, used simultaneously fluorescent powder to utilize the heat of P-N knot to give out light, therefore luminescence efficiency is high, energy loss is minimum, and the application target of LED illuminating lamp is not omnibearing illumination, but for the illumination among a small circle in operator's manual manipulation zone, so power consumption is very low; And the LED lighting module in the present invention built-in the electric capacity on-off circuit that cuts off power supply, only have and hold metalized lamp rod part on test pencil as the user, bleed off electric capacity by human body and cut off the electric capacity that stores in the on-off circuit of power supply, when the switch of LED illuminating lamp is pressed simultaneously, lamp is just bright, reach the purpose of power saving, because when operating personnel's hand is not held metalized lamp rod, just do not try electric operation, need not illumination.
The low-power consumption of carbon monoxide detector is embodied in: gas sensing resistance induction silk is by adopting the hybrid metal salt catalyst that is made of 70% platinum, 25% gold, 5% silver, adopt zirconia and the hybrid alloys silk of platinum, the hybrid alloys silk of Jin Yuyin, make the induction silk of the gas sensing resistance of carbon monoxide detector provided by the invention still can guarantee to detect quality in the situation that volume is minimum.
Due to the bright lighting module that adopts in the present invention and the carbon monoxide detector power consumption extremely low, thereby make bright lighting module and carbon monoxide detector in the situation that share a small-sized supply module can both steady operation, and, overall volume is little, the test pencil of integrated carbon monoxide detector and lighting module can be put in staff's palm fully.
The present invention can satisfy the electric personnel operation environment of examination by carbon monoxide detector is improved, and reduces its power consumption and volume, and itself and test pencil are combined into for possibility.And provide a kind of test pencil of integrated carbon monoxide detector provided by the invention, this test pencil can also combine with lighting module, becoming the test pencil that carries carbon monoxide detector and LED illuminating lamp, is the novel electrician's instrument that is exclusively used in the electric operation of hazardous location examination.Compare the existing test pencil that generally only possesses simple examination Electricity Functional, the present invention can be unclear at perform region light is to use, and prevents that the staff from causing Danger Electric shock risk.In case or exist carbonomonoxide concentration to exceed standard to run into the electric spark very likely can be to report to the police flash of light and hear that buzzer reminds the staff to leave fast this zone, to guarantee safety when explosion caused danger and poisoning danger.
Description of drawings
Fig. 1 is the inner structure schematic diagram of the embodiment of the present invention.
Fig. 2 is the outward appearance front view of the embodiment of the present invention.
Wherein, 1-nib, 2-spring, 3-carbon resistance, 4-neon tube, the stretchable LED metalized lamp rod of 5-, 6-hummer, 7-alarm lamp, 8-warning circuit, 9-gas sensing resistance, 10-Carbon Monoxide Detection circuit, 11-power supply circuit, 12-0.3w LED lamp, 13-electric battery, 14-human body resistance.
Embodiment
Reach for further setting forth the present invention technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, a kind of carbon monoxide detector of foundation the present invention proposition and the embodiment of the application in test pencil thereof are elaborated.
Purpose of the present invention is that carbon monoxide detector and test pencil are combined into the small-sized test pencil that can be held with a firm grip by adult's palm.Therefore and existing carbon monoxide detector energy consumption is large, volume is large, can not be arranged on test pencil, carbon monoxide detector is improved, and makes it have low-power consumption and the little characteristics of volume are core requirements of the present invention.
Carbon monoxide detector in the present embodiment comprises: Carbon Monoxide Detection circuit 10, warning circuit 8, gas sensing resistance 9, alarm lamp 7, hummer 6 and supply module.For supply module, preferred, the electric battery 13 that adopts three AG10 button cells to form.As shown in Figure 1, Carbon Monoxide Detection circuit 10 is connected with gas sensing resistance 9, electric battery 13; Warning circuit 8 is connected with Carbon Monoxide Detection circuit 10, and warning circuit 8 also is connected respectively with alarm lamp 7, hummer 6.The present invention uses the high sensitivity gas sensing resistance, and in gas sensing resistance, the composition of induction silk comprises: the hybrid alloys silk of 25% mixed metal salt catalyst alloy silk and 75% zirconia and platinum.Preferably, wherein, the composition of mixed metal salt catalyst alloy silk comprises: 70% platinum, 25% gold and 5% silver.Be more preferably, wherein, the composition of the hybrid alloys silk of zirconia and platinum comprises: 68% zirconia and 32% platinum.Its purpose is, sensitivity when making carbon monoxide detector provided by the present invention obtain low temperature, and enhancing is to the susceptibility of CO gas, can control the volume of carbon monoxide detector very little, and power consumption being very low, be only 0.4W, adopt zirconia and platinum, the hybrid alloys silk of Jin Yuyin has reached as the induction silk of gas sensing resistance the purpose that under normal temperature, resistance wire reduces along with the concentration of carbon monoxide, realizes low-power consumption and microminiaturized purpose.
Owing to having adopted above-mentioned improvement, the induction silk of gas sensing resistance can be controlled volume very little, and length is 1mm, and diameter is that the gas sensing resistance induction silk provided by the invention of 0.06mm to 0.1mm can both guarantee detection sensitivity, most preferred induction filament length degree is 1mm, and diameter is 0.06mm.
By above-mentioned improvement to carbon monoxide detector, solved the problem that in the prior art, the carbon monoxide detector volume is large, energy consumption is large, thereby also satisfied with its be arranged on test pencil may.
Carbon monoxide alarm in the present embodiment adopts the principle of constant potentiometric electrolysis to carry out the detection of carbon monoxide.that the gas that contains carbon monoxide is diffused into by waterproof membrane on the film that contains catalyzer under the effect of constant potential, with electrolytic solution at gas, Gu, carry out the redox electrochemical reaction between the liquid three phase boundary, by detecting its dissufion current, just can draw the concentration of CO gas, the initial setting value of reporting to the police is 50ppm, when carbon monoxide gas concentration begins to glimmer at a slow speed greater than 50ppm alarm pilot lamp, hummer begins to ring at a slow speed, along with the flicker frequency of the rising alarm lamp of concentration and the frequency of ringing of hummer are also progressively accelerated, the warning measurement range of carbon monoxide detector is from 50ppm～10000ppm.
The principle of work of carbon monoxide detector is: when gas sensing resistance 9 detects carbon monoxide gas concentration and exceeds standard greater than 50ppm, Carbon Monoxide Detection circuit 10 will activate warning circuit 8, make hummer 6 beginnings ring at a slow speed, the flicker at a slow speed of alarm lamp 7 beginnings simultaneously.Along with the rising of concentration, the frequency of ringing of the flicker frequency of alarm lamp 7 and hummer 6 is also progressively accelerated, and should leave fast this zone when the staff sees when reporting to the police flash of light and hearing buzzer, to guarantee safety.
The test pencil of integrated carbon monoxide detector can also by increasing lighting module, satisfy the requirement of operation under the hazardous environment of insufficient light.The cut-away view of the present embodiment that reference is shown in Figure 1 as can be known.
Lighting module comprises: LED illuminating lamp 12, power supply circuit 11, LED lighting lamp control switch.LED illuminating lamp 12 is connected with the LED lighting lamp control switch by power supply circuit 11, and the supply module in power supply circuit 11 access carbon monoxide detectors is access electric battery 13 in this example.LED illuminating lamp 12 shares 3 AG10 type button cells with carbon monoxide detector.The lighting power of the LED illuminating lamp 12 that adopts in the present embodiment is 0.3w.After the operator pressed the LED lighting lamp control switch, it was 12 power supplies of LED lamp that power supply circuit 11 just begins, and the electric battery 13 of three AG10 button cell compositions can provide and continue the light source of 10 hours.
Be to reduce the power consumption of lighting module, the centre position of the P-N knot of LED illuminating lamp 12 in lighting module is arranged fluorescent powder.And power supply circuit 11 is improved: the capacitance selection that power supply circuit 11 is adopted is SMD metal capacitance, and SMD metal capacitance is easy to processing and manufacturing, and volume is little, thermal value is little, low in energy consumption, highly sensitive; The circuit that power supply circuit 11 in lighting module adopts is 90% silver coating circuit.
For further reducing the power consumption of lighting module, the on-off circuit that metalized lamp rod 5 and electric capacity cut off power supply is set.Metalized lamp rod 5 is connected rear access power supply circuit 11 with the on-off circuit that electric capacity cuts off power supply; LED illuminating lamp 12 is connected with metalized lamp rod 5; The metal part of metalized lamp rod 5 connects the neon tube 4 of test pencil by wire.By such mode, the earth terminal that replaces test pencil nib place's setting in prior art, make to only have and hold metalized lamp rod 5 on test pencil as the user, bleed off electric capacity by human body and cut off the electric capacity that stores in the on-off circuit of power supply, when simultaneously the switch of LED illuminating lamp is pressed, LED illuminating lamp 12 is just bright, reaches the purpose of power saving, because operating personnel's hand is not when holding metalized lamp rod, just do not try electric operation, need not illumination.For metalized lamp rod 5, preferred, adopt stretchable metalized lamp rod.
For the test pencil part, shown in Fig. 1, nib 1, spring 2, carbon resistance 3, neon bulb 4, metalized lamp rod 5 consist of the test pencil part.Its connected mode is as shown in FIG.: nib 1, spring 2, carbon resistance 3, neon bulb 4, metalized lamp rod 5 are linked in sequence.Its principle of work is: when test pencil test electrified body, as long as electrified body, nib 1, spring 2, carbon resistance 3, neon bulb 4, metalized lamp rod 5 and human body, the earth consist of path, and the potential difference (PD) between electrified body and the earth surpasses certain numerical value (for example 60 volts), neon tube 4 among test pencil will be luminous (no matter its current potential is to exchange or direct current), this just tells people, testee is charged, and has surpassed certain voltage strength.And 3. carbon resistances of test pencil inside have 10 megaohms, and the electric current by the test pencil electric current of human body (namely by) is very little, usually less than 1 milliampere, when so little electric current passes through human body, to not injury of people, and during the neon tube 4 of so little electric current by test pencil, neon tube 4 can be luminous.
As shown in Figure 2, more harmonious on one-piece construction for the test pencil that has made carbon monoxide detector and lighting module integrated, can adopt the mounting box with function zoning.The pilot lamp viewing area be set on the mounting box panel, detect the hole, warning articulating region, button setting area.The neon tube 4 of the alarm lamp 7 in carbon monoxide detector and test pencil is arranged at the pilot lamp viewing area, can also sets up power light and short of electricity pilot lamp.The gas sensing resistance 9 of carbon monoxide detector is arranged in detection hole on the mounting box panel; The hummer 6 of carbon monoxide detector is arranged at the warning articulating region; The LED lighting lamp control switch is arranged in button setting area on the mounting box panel.
With the test pencil of carbon monoxide detector and lighting module before use, the user should confirm that electric battery 13 has electricity, and the short of electricity pilot lamp on the mounting box panel does not work.Can make LED illuminating lamp 12 luminous by clicking light switch, nib be inserted the live wire end of 220v socket, trying electric pilot lamp (neon tube 4) can be bright.
The test pencil that integrates carbon monoxide detector and lighting module provided by the present invention, can in time provide carbonomonoxide concentration to report to the police when trying electric operation, the LED illuminating lamp 12 with stretchable metalized lamp rod that carries on test pencil can provide illumination to any direction, guarantees that the operating personnel can have enough light sources in the examination electricity.Carbon monoxide detector CO gas is detected and when carbon monoxide gas concentration surpasses setting value (as 50ppm) send sound and light alarm, the prompting staff leaves this zone fast, to guarantee safety.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to example, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (7)
1. a carbon monoxide detector, comprise gas sensing resistance, it is characterized in that, in described gas sensing resistance, the composition of induction silk comprises: the hybrid alloys silk of 25% mixed metal salt catalyst alloy silk and 75% zirconia and platinum;
The composition of described mixed metal salt catalyst alloy silk comprises: 70% platinum, 25% gold and 5% silver;
The composition of the hybrid alloys silk of described zirconia and platinum comprises: 68% zirconia and 32% platinum.
2. carbon monoxide detector as claimed in claim 1, is characterized in that, the length of described gas sensing resistance induction silk is 1mm, and diameter is 0.06mm to 0.1mm.
3. a test pencil, comprise nib and a body; It is characterized in that, also comprise carbon monoxide detector as claimed in claim 1 or 2; Described carbon monoxide detector is arranged at it described pen.
4. test pencil as claimed in claim 3, is characterized in that, also comprises lighting module;
Described lighting module is arranged at it described pen, and lighting module comprises LED illuminating lamp, power supply circuit, LED lighting lamp control switch;
Described LED illuminating lamp is connected with described LED lighting lamp control switch by described power supply circuit, the supply module in the described carbon monoxide detector of power supply circuit access.
5. test pencil as claimed in claim 4, is characterized in that,
The electric capacity that adopts in power supply circuit in described lighting module is SMD metal capacitance; Or,
The circuit that power supply circuit in described lighting module adopts is 90% silver coating circuit; Or,
The electric capacity that adopts in power supply circuit in described lighting module is SMD metal capacitance, and the circuit that the power supply circuit in described lighting module adopts is 90% silver coating circuit.
6. test pencil as claimed in claim 5, is characterized in that, described lighting module also comprises the on-off circuit that metalized lamp rod and electric capacity cut off power supply;
Described metalized lamp rod is connected the described power supply circuit of rear access with the on-off circuit that described electric capacity cuts off power supply;
Described LED illuminating lamp is connected with metalized lamp rod;
The metal part of metalized lamp rod connects the neon tube of test pencil by wire.
7. test pencil as claimed in claim 6, is characterized in that, also comprises mounting box;
Described carbon monoxide detector is arranged at it described pen by described mounting box;
Be provided with the pilot lamp viewing area on the mounting box panel, detect the hole, warning articulating region, button setting area;
Described pilot lamp viewing area comprises the electric pilot lamp of examination and alarm lamp, and described examination electricity pilot lamp is connected with described nib, and described alarm lamp is connected with the gas sensing resistance of carbon monoxide detector;
The gas sensing resistance of described carbon monoxide detector is arranged in detection hole on described mounting box panel;
Described warning articulating region is provided with hummer, and described hummer is connected with the gas sensing resistance of carbon monoxide detector by circuit;
Described LED lighting lamp control switch is arranged in button setting area on described mounting box panel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110248097 CN102401809B (en) | 2011-08-26 | 2011-08-26 | Carbon monoxide detector and application of detector in voltage test pencil |
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| CN 201110248097 CN102401809B (en) | 2011-08-26 | 2011-08-26 | Carbon monoxide detector and application of detector in voltage test pencil |
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| CN102401809A CN102401809A (en) | 2012-04-04 |
| CN102401809B true CN102401809B (en) | 2013-06-19 |
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| CN 201110248097 Active CN102401809B (en) | 2011-08-26 | 2011-08-26 | Carbon monoxide detector and application of detector in voltage test pencil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103716933A (en) * | 2012-09-28 | 2014-04-09 | 深圳市海洋王照明工程有限公司 | Combustible gas detection alarm lighting circuit and apparatus |
| CN104420883A (en) * | 2013-08-20 | 2015-03-18 | 海洋王（东莞）照明科技有限公司 | Gas processing circuit and lamp |
| CH711415B1 (en) * | 2015-08-13 | 2019-04-30 | Take Off Diffusion S A | Gas measuring device incorporated in a wristwatch |
| CN110865230B (en) * | 2019-10-18 | 2021-09-07 | 南京信息工程大学滨江学院 | Non-contact test pencil and measurement algorithm and calibration method thereof |
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| JPH07294473A (en) * | 1994-03-02 | 1995-11-10 | Fuji Electric Co Ltd | Carbon monoxide gas detector |
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| KR900003055B1 (en) * | 1987-01-27 | 1990-05-04 | 한국동력자원 연구소 | Co gas detecting sensor |
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