CN2921827Y - Portable photometer for measuring low concentration ozone - Google Patents
Portable photometer for measuring low concentration ozone Download PDFInfo
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- CN2921827Y CN2921827Y CN 200620044112 CN200620044112U CN2921827Y CN 2921827 Y CN2921827 Y CN 2921827Y CN 200620044112 CN200620044112 CN 200620044112 CN 200620044112 U CN200620044112 U CN 200620044112U CN 2921827 Y CN2921827 Y CN 2921827Y
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Abstract
The utility model relates to a portable photometer for measuring low concentration ozone, belonging to the technical field of gas measurement photometer instrument manufacture. The photometer instrument of the utility model is an improved type of commonly used photometers. The utility model mainly improves light sources, sample holders, etc. An absorption pool 3 and a light shading door 4 are arranged between a light source 2 and a detector 5, wherein, the light source 2 adopts a diode with special wavelength; the absorption pool 3 adopts a 2 cm glass colorimetric dish; the light shading door 4 is a black plating aluminum plate; the detector 5 is a silicon photocell. The photometer of the utility model can accurately determines the range of ozone concentration in 10-1000 ppm, which can be used for the calibration of ozone concentration in ozone aging test chamber studio as well as the measurement of ozone content in gas in the environments such as parks, streets, fields and rooms.
Description
Technical field
The utility model relates to a kind of portable luminosity meter that is used to measure low concentration ozone, belongs to gasmetry photometer instrument manufacturing technology field.
Background technology
Adopting the photometer measurement ozone concentration is a kind of easy, reliable method.There are some shortcoming and defect in the present widely used spectrophotometer of China as 721 types, 751 types etc.: volume weighs greatly; Instrument has beam splitting system so fragile structure; Incident intensity is more weak or the like after beam split.Obviously, this quasi-instrument generally can not often be moved, and is difficult to be applicable to engineering site analysis or frequent touring maintenance.
At some above-mentioned shortcoming and defect, be necessary that the photometer of present use is done some to be improved, create that a kind of compact conformation, stable performance, volume are little, in light weight, measurement result accurately and reliably, portable luminosity meter that be convenient for carrying, that be used to measure ozone concentration.
The utility model content
The purpose of this utility model provides a kind of compact conformation, stable performance, the accurate and reliable portable luminosity meter that is used to measure ozone concentration of measurement.
A kind of portable luminosity meter that is used to measure low concentration ozone of the utility model, include power supply, light source, absorption cell, light excluding shutter, detecting device, signal processing circuit, reading device and light intensity regulating circuit, it is characterized in that: light source adopts the diode of specific wavelength; Adopt the fixed sample frame, absorption cell adopts the 2cm glass cuvette; Light excluding shutter is the black coating aluminium sheet; Detecting device is a silicon photocell; Power supply is a switch voltage-stabilizing circuit, has three groups of high stable DC voltage-stabilizing outputs of positive and negative 9V, positive 3V, is in series with a multiturn potentiometer in this positive 3V high stable DC voltage-stabilizing output load, to regulate the luminous intensity of light emitting diode; Signal processing circuit comprises electric current-voltage conversion circuit, high stable voltage amplifier circuit, zero adjustment circuit and logarithmic circuit; The output signal of logarithmic circuit is supplied with reading device with the indication reading value; Reading device is voltage table or digital voltmeter.
The utility model is photometric a kind of modified version of the conventional measurement ozone concentration that uses of tradition.
The portable luminosity meter of measurement low concentration ozone of the present utility model has following characteristics:
(1) adopts the specific wavelength light emitting diode to make light source, got rid of the spectrophotometric beam splitting system of conventional use.Light source monochromaticity is good, the life-span is long, light intensity is big and stablize.
(2) adopt the fixed sample frame, only serve as reference cell and sample cell in turn with a cuvette, having eliminated needs mobile specimen holder, has improved the vibration resistance performance; Also eliminated the difference between the cuvette, the apparatus measures favorable reproducibility.
(3) adopt silicon photocell as detecting device, volume is little, good stability, life-span are long.
(4) light excluding shutter is set, when reading not, does not have the irradiate light silicon photocell, avoided the fatigue of silicon photocell; Can improve accuracy of measurement, prolong the silicon photocell life-span.
(5) compact overall structure does not have to be afraid of to move loosening parts, and is firmly firm; And volume is little, and is in light weight, is easy to carry; And can work under the rugged environment relatively, and keep superperformance.
Description of drawings
Fig. 1 is photometric each the parts annexation synoptic diagram of the utility model.
Wherein: 1-power supply, 2-light source, 3-absorption cell, 4-light excluding shutter, 5-detecting device, 6-signal processing circuit, 7-reading device, 8-light intensity regulating circuit.
Fig. 2 is the instrument light path part synoptic diagram of the main improvement part of the utility model photometer.
Wherein: 2-light emitting diode (light source), 3-2cm cuvette (absorption cell), 4-black coating aluminium sheet (light excluding shutter), 5-photoelectric cell (detecting device), 9-fixed sample frame.
Embodiment
After now specific embodiment of the utility model being described in.
Embodiment 1
Be used to measure the portable luminosity meter of low concentration ozone in the present embodiment, got rid of the spectrophotometric beam splitting system of conventional use, simplified apparatus structure; Measuring principle and common photometer commonly used are similar.Each parts annexation synoptic diagram referring to Fig. 1.It includes power supply 1, light source 2, absorption cell 3, light excluding shutter 4, detecting device 5, signal processing circuit 6, reading device 7 and light intensity regulating circuit 8.
The utility model mainly partly improves light source, specimen holder etc.Get rid of the spectrophotometric beam splitting system (grating, lens, import and export slit etc.) of conventional use, adopted the light emitting diode of specific wavelength to make light source; Get rid of the bigger mobile example frame of volume, changed the fixed sample frame of putting an absorption cell into.Instrument light path part synoptic diagram referring to the main improvement part of photometer of Fig. 2.The layout Rankine-Hugoniot relations of each several part from left to right is light source 2, fixed sample frame 9, absorption cell 3, light excluding shutter 4, detecting device 5; Fixed sample frame 9, absorption cell 3 and light excluding shutter 4 are just between light source 2 and detecting device 5.Light source 2 adopts the light emitting diode of specific wavelength; Absorption cell 3 adopts the 2cm glass cuvette; Light excluding shutter 4 is the black coating aluminium sheet; Detecting device 5 is a silicon photocell.In addition, power supply 1 is a switch voltage-stabilizing circuit, has three groups of high stable DC voltage-stabilizing outputs of positive and negative 9V, positive 3V, is in series with a multiturn potentiometer in this positive 3V high stable DC voltage-stabilizing output load, to regulate the luminous intensity of light emitting diode, so that realize that 100% regulates.Signal processing circuit comprises electric current-voltage conversion circuit, high stable voltage amplifier circuit, zero adjustment circuit and logarithmic circuit.The output signal of logarithmic circuit is supplied with reading device 7 with the indication reading value.Reading device 7 is voltage table or digital voltmeter.
The portable luminosity meter that the utility model is used to measure low concentration ozone can be used for the demarcation and the correction of ozone box operating room ozone concentration value.The utility model photometer can determine accurately that the ozone concentration scope is at 10～1000ppm.It has contained operating room's ozone concentration situation of having covered present all brand ozone box nominals.
The utility model photometer also can be used for the measurement of ozone content in park, street, field, the environmental gas such as indoor.
The specific operation process of the utility model photometer measurement ozone content is as follows:
(1) prepares, demarcated absorption liquid by the method for GB/T 15437-1995 standard code in advance.
(2) method of pressing GB/T 15437-1995 standard code is gathered environmental gas feeding absorption liquid.
(3) adopting wavelength is that the light emitting diode of 612nm is as light source.
(4) turn on the power switch instrument stabilizer 15 minutes.
(5) close light excluding shutter, adjust zero point.
(6) take out absorption cell, in absorption cell, put into the absorption liquid that does not lead to ozone and do with reference to comparative solution.
(7) open light excluding shutter, transfer full to 100% scale.
(8) take out absorption cell, the absorption liquid that changes the ozone of having friendly relations in absorption cell into is made sample solution, and surveys its absorbance; Wherein the method for sample solution absorption ozone is pressed the operation of GB/T 15437-1995 standard code method.
(9) repeat repeatedly to take a sample, measure the sample absorbance, ask its mean value.
(10) method of pressing GB/T 15437-1995 standard code is calculated acquisition ozone concentration value.
Claims (1)
1. portable luminosity meter that is used to measure low concentration ozone, include power supply (1), light source (2), absorption cell (3), light excluding shutter (4), detecting device (5), signal processing circuit (6), reading device (7) and light intensity regulating circuit (8), it is characterized in that: light source (2) adopts the light emitting diode of specific wavelength; Adopt fixed sample frame (9), absorption cell (3) adopts the 2cm glass cuvette; Light excluding shutter (4) is the black coating aluminium sheet; Detecting device (5) is a silicon photocell; Power supply (1) is a switch voltage-stabilizing circuit, has three groups of high stable DC voltage-stabilizing outputs of positive and negative 9V, positive 3V, is in series with a multiturn potentiometer in this positive 3V high stable DC voltage-stabilizing output load, to regulate the luminous intensity of light emitting diode; Signal processing circuit comprises electric current-voltage conversion circuit, high stable voltage amplifier circuit, zero adjustment circuit and logarithmic circuit; The output signal of logarithmic circuit is supplied with reading device (7) with the indication reading value; Reading device (7) is voltage table or digital voltmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620044112 CN2921827Y (en) | 2006-07-21 | 2006-07-21 | Portable photometer for measuring low concentration ozone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620044112 CN2921827Y (en) | 2006-07-21 | 2006-07-21 | Portable photometer for measuring low concentration ozone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2921827Y true CN2921827Y (en) | 2007-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620044112 Expired - Fee Related CN2921827Y (en) | 2006-07-21 | 2006-07-21 | Portable photometer for measuring low concentration ozone |
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| CN (1) | CN2921827Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101181977B (en) * | 2007-11-23 | 2010-07-21 | 中国计量科学研究院 | Ozone standard gas generating apparatus |
| CN101900671A (en) * | 2010-07-20 | 2010-12-01 | 深圳市清时捷科技有限公司 | Method for fast measuring ozone in water and apparatus thereof |
| CN101706384B (en) * | 2009-09-30 | 2012-02-22 | 聚光科技(杭州)股份有限公司 | Gas supply method and device |
| CN106872366A (en) * | 2015-12-11 | 2017-06-20 | 新大陆科技集团有限公司 | A kind of low concentration ozone concentration detector of single light source |
-
2006
- 2006-07-21 CN CN 200620044112 patent/CN2921827Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101181977B (en) * | 2007-11-23 | 2010-07-21 | 中国计量科学研究院 | Ozone standard gas generating apparatus |
| CN101706384B (en) * | 2009-09-30 | 2012-02-22 | 聚光科技(杭州)股份有限公司 | Gas supply method and device |
| CN101900671A (en) * | 2010-07-20 | 2010-12-01 | 深圳市清时捷科技有限公司 | Method for fast measuring ozone in water and apparatus thereof |
| CN101900671B (en) * | 2010-07-20 | 2012-08-22 | 深圳市清时捷科技有限公司 | Method for fast measuring ozone in water and apparatus thereof |
| CN106872366A (en) * | 2015-12-11 | 2017-06-20 | 新大陆科技集团有限公司 | A kind of low concentration ozone concentration detector of single light source |
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Legal Events
| 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 |
Granted publication date: 20070711 Termination date: 20140721 |
|
| EXPY | Termination of patent right or utility model |