CN2634469Y - Multifunction on-site colour comparatour - Google Patents
Multifunction on-site colour comparatour Download PDFInfo
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- CN2634469Y CN2634469Y CN 02234891 CN02234891U CN2634469Y CN 2634469 Y CN2634469 Y CN 2634469Y CN 02234891 CN02234891 CN 02234891 CN 02234891 U CN02234891 U CN 02234891U CN 2634469 Y CN2634469 Y CN 2634469Y
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Abstract
A small, portable, multifunctional field colorimetric tester is disclosed. In particular, the tester is used to test compound in the air, such as formaldehyde, ammonia, sulfur dioxide, ozone, nitrogen dioxide, sulfureted hydrogen, chlorine, beryllium, pyridine, nitrate and phenolic compound etc. The tester can quantitatively test the content of formaldehyde and formaldehyde sodium bisulfite in food, textile, decorative and fitment material (artificial board, furniture, paint, adhesive, wallpaper and carpet), and quantitatively test the content of nitrogen, phosphor, kalium, organic matter and pH value in soil and fertilizer. The tester mainly comprises a LED light source, a colorimetric cell, a detector, a microprocessor, a chargeable electric source, an air sampling pump, a sensor, a liquid crystal display screen, a keystroke, a typewriter, a power port, a RS-232 port, a switch, a gas entrance-exit, a bubble absorption mount and a shell. The instrument is characterized in good reproducibility, rapid measuring speed and convenient usage.
Description
Technical field
The utility model relates to a kind of small-sized analytical instrument, is specifically related to a kind of small-sized, portable, in situ quantitation and measures formaldehyde and ammonia and sulphuric dioxide in the air, ozone, nitrogen dioxide, sulfuretted hydrogen, chlorine, beryllium, pyridine, nitrate, phenolic compound etc.; The instrument of nitrogen, phosphorus, potassium, organic matter, pH value equal size in quantitative measurement wood-based plate, furniture, coating, tackifier, wallpaper, carpet, textile, formaldehyde in food and rongalite and soil and the fertilizer.
Background technology
Formaldehyde (HCHO) is commonly called as acetaldehyde, wooden aldehyde, and we are familiar with is the formalin that its 40% aqueous solution promptly often is used to do antiseptic.
Formaldehyde is of many uses.All to use formaldehyde in synthetic resin, surfactant, plastics, rubber, tanning, papermaking, dyestuff, pharmacy, agricultural chemicals, photographic film, explosive, building materials and sterilization, the stifling and anticorrosion process, we can say that formaldehyde is a many-side people in the chemical industry.Yet have too much of a good thing, surmount boundary, bring endless trouble in case use.The medical expert introduces, and content of formaldehyde exceeds standard in the air becomes one of inducement of breathing problem, blood disease, intestines problem and pregnant woman's miscarriage, and directly has a finger in every pie food service industry, more makes formaldehyde become hard to guard against healthy killer.
Formaldehyde is a kind of colourless easily molten irritative gas, and formaldehyde gas can absorb through respiratory tract, and its aqueous solution " formalin " can absorb through respiratory tract.Modern scientific research shows, when indoor content is 0.1mg/m
3The time peculiar smell and sense of discomfort just arranged; 0.5mg/m
3In time, can stimulate eyes to cause to shed tears; 0.6mg/m
3Shi Yinqi throat discomfort or pain; Concentration is high again to cause nausea, vomit, cough, uncomfortable in chest, asthma even pulmonary emphysema; In air, reach 30mg/m
3The time can cause death at once.Long-term contact low dosage formaldehyde is (as 0.02mg/m
3) can cause chronic respiratory disease, women's paramenia, pregnancy syndrome, cause that neonate's physique reduces, chromosome abnormality, even cause nasopharyngeal carcinoma.The formaldehyde of high concentration is (as 0.1mg/m
3More than) all toxic to nervous system, immune system, liver etc.But it is exciting eye conjunctiva, respiratory mucosa and produce tears, runny nose also, causes conjunctivitis, sphagitis, asthma, bronchitis and allergic disease.Formaldehyde also has teratogenesis, carcinogenesis.According to epidemiology survey, accept the people of formaldehyde for a long time, can cause nasal cavity, oral cavity, nasopharynx, throat, skin and gastral cancer.
Rongalite (NaHSO
2CH
2O2H
2O) be commonly called as sodium formaldehyde sulfoxylate or rongalite, white powdery or crystallization powder, water soluble, comparatively stable during normal temperature, resolve into sulphite during high temperature, in process, generate formaldehyde and sulphite or sulphuric dioxide, strong reducing action is arranged, be the bleaching agent that commercial production is used, human body is taken in 10g and is got final product the causing death, thus country already explicit order in food, ban use of sodium formaldehyde sulfoxylate to make bleaching agent.
Ammonia is a kind of colourless intense stimulus gas that has.Be mainly used in and make liquefied ammonia, ammoniacal liquor, nitric acid, ammonia salt, amine etc., in agricultural, be used as chemical fertilizer, in building constructions, be used as antifreeze additive etc.Long-term contact low dosage ammonia (0.1mg/m
3) can cause chronic respiratory disease, as asthma, sphagitis and conjunctivitis etc.
There is the following aspects in objectionable impuritiess such as formaldehyde, rongalite and ammonia source.
1. artificial boards such as the scale board that is used for indoor ornamentation, Blockboard, medium density fibre board (MDF) and particieboard.Because formaldehyde has stronger adhesion, also have the sheet material hardness of reinforcement and insect protected, anti-corrosion function, so produce at present tackifier that wood-based plate uses with formaldehyde as formaldehyde residual and that have neither part nor lot in reaction in the Lauxite of principal ingredient, the sheet material towards periphery environment discharge, be the main body that forms formaldehyde in indoor air.
2. the furniture made from wood-based plate.Some producers use underproof sheet material for profit-push, cause formaldehyde to exceed standard.
3. the other kinds ornament materials that contains the formaldehyde composition and might distribute to the external world is as adherent cloth, wallpaper, chemical fibre carpet, polyfoam, paint and coating etc.
4. in the winter time in the building operation, freeze in order to prevent cement, add nitrogenous fertilizer such as urea element, ammonium nitrate in cement, when environment temperature rose, urea element or ammonium nitrate were released in the air in room with the gaseous ammonia form in the cement.In addition, breed factory, fertilizer manufacturing plant, destructor plant, hair-waving place also are the main sources that ammonia discharges.
5. in order to prevent that textile from shrinking, make fabric well-pressed, adopt formaldehyde resin to handle more.When surpassing a threshold quantity from the free formaldehyde to skin of fiber, the people will produce allergic reaction dermatitis.
6. some illegal operators are in order to obtain sudden huge profits, in flour and Flour product, ground rice, bean vermicelli, bean curd stick, white sugar, preserved fruit, water-soaked food, aquatic products and seafood products, add the rongalite (sodium formaldehyde sulfoxylate) that country bans use of, to reach bleaching, anticorrosion, prolongation holding time.
Measured data shows that under the situation of general normal finishing, interior decoration is after 5 months, and the concentration of formaldehyde can be lower than 0.1 milligram/cubic metre; Fitting up can be near below 0.08 milligram/cubic metre after 7 months.Japan studies show that the release period of indoor formaldehyde was generally 3 to 15 years.
People's Republic of China's standard " hygienic standard of formaldehyde in the indoor air " regulation: the maximum permissible concentration of formaldehyde in indoor air is 0.08 milligram/cubic metre; The safe level of ammonia is 0.2 milligram/cubic metre; Do not allow in food, to detect formaldehyde and rongalite.
In addition, because wood-based plate is the main cause that causes formaldehyde in indoor air to exceed standard, many in the world countries have all made strict regulation to the burst size of methanal of wood-based plate, and national standard is that the perforation test value must be less than 9 milligrams of formaldehyde/100 grams.
At present, formaldehyde and the quantitative measurement of objectionable impuritiess such as ammonia are subjected to the relevant leader's of State Council great attention, June calendar year 2001, the Wen Jiabao vice-premier of State Council on the 7th went up written instructions at " the serious standard market of indoor decoration pollution is very urgent " literary composition, August 24 calendar year 2001 the Li Lanqing vice-premier " harmful coating floods market in Liberation Daily, green material is rarely known by the people " written instructions gone up in a literary composition " asks departments such as standard, environmental protection, quality to formulate a measure immediately; to forbid finding ", for this reason, nation-building portion.The all corresponding instruction spirit of promptly implementing the relevant leader of State Council of State General Administration for Quality Supervision, State Environmental Protection Administration and the Ministry of Public Health, formulate related standards such as corresponding indoor environment, air quality, home decorating, construction engineering quality, this standard was mandatory execution on July 1 in 2002.
The method of measuring objectionable impuritiess such as formaldehyde, rongalite and ammonia has a series of sensitivities such as chemical analysis, gas chromatography, spectrophotometric, detector tube method, oscilloscopic polarography, method accurately, but they mostly are unsuitable for doing at the scene the original position real-time continuous and measure.
In detecting at the scene, except that a kind of color length that produces by gas-solid reaction that adopts changes the objectionable impuritiess such as detecting formaldehyde and ammonia (this method can not be used for the detection of fluid sample), remaining all adopts electrochemical method, electrochemical sensor formaldehyde determination instrument as the production of Britain PPM company, the galvanochemistry formaldehyde determination instrument that harmful gas analyzer such as galvanochemistry formaldehyde that Japan COSMOS company produces and ammonia and U.S. ESC Inc. produce, the galvanochemistry ammonia analyzer that U.S. RAE company produces, these analyzers are portable, analysis speed is fast, but instrument price height (40,000/platform), poor accuracy, serious interference, and only be applicable to and measure formaldehyde and ammonia in the air, can not measure the formaldehyde in liquid and the solid sample, rongalite and ammonia is not so the formaldehyde standard method of analysis that China formulates adopts electrochemical method.
The utility model content
The purpose of this utility model provides a kind of quick, easy, accurate, in situ quantitation and measures formaldehyde and ammonia and sulphuric dioxide in the air, ozone, nitrogen dioxide, sulfuretted hydrogen, chlorine, beryllium, pyridine, nitrate, phenolic compound etc.; The multi-functional onsite colorimetric estimation instrument of nitrogen, phosphorus, potassium, organic matter, pH value equal size in formaldehyde and rongalite and soil and the fertilizer in quantitative measurement textile, food and the ornament materials (wood-based plate, furniture, coating, tackifier, carpet, wallpaper).
For achieving the above object, the utility model adopts following design proposal:
The utility model provides a kind of multi-functional onsite colorimetric estimation instrument, it comprises housing, be included in the inner structure among the housing and be emerging in external structure outside the housing, and described inner structure is connected and composed by led light source, colorimetric pool, detecting device, microprocessor, rechargable power supplies, air sampling pump and sensor optical path and circuit; Described external structure is made up of LCDs, storage button, zeroing button, selection key, concentration button, printer, power interface, RS-232 interface, ON/OFF, colorimetric pool set collar, gas inlet-outlet, bubble absorption tube fixed mount, and described display screen, storage button, zeroing button, selection key, concentration button, printer, power interface, RS-232 interface, ON/OFF are connected with the microprocessor circuit respectively.
Above-mentioned multi-functional onsite colorimetric estimation instrument mainly comprises colorimetric bottle, colorimetric bottle rubber stopper, colorimetric bottle steady arm, super bright light emitting diode, integrated electro sensor, dop, bayonet socket and colorimetric pool housing in the described colorimetric pool; Described colorimetric pool housing upper end is connected with the colorimetric pool set collar, and the outside, colorimetric pool housing lower end is a hexagon, wherein goes up 9 different wave length superhigh brightness LEDs of installation for three square, and 3 detecting devices are installed on three square faces corresponding with it; Place the glass colorimetric bottle of band scale in colorimetric pool, the bottleneck of colorimetric bottle seals with rubber stopper, establishes dop on the colorimetric bottle steady arm, establishes dop on the colorimetric pool, by dop and bayonet socket location colorimetric bottle.
Above-mentioned multi-functional onsite colorimetric estimation instrument, described led light source is super bright light emitting diode, both made light source, make monochromator again, 9 kinds of monochromatic super bright light emitting diodes of different wave length such as available 412nm, 430nm, 470nm, 520nm, 550nm, 575nm, 610nm, 630nm and 860nm.
Above-mentioned multi-functional onsite colorimetric estimation instrument, described detecting device is the integrated electro sensor, and model is TSL201, TSL202, TSL208, TLS220, TSL230, TSL235, TSL245, TSL250, TSL251, TSL252, TSL253, TSL254, TSL255, TSL257, TSL260, TSL261 and TSL262.
Above-mentioned multi-functional onsite colorimetric estimation instrument, described rechargable power supplies is a Li-Ion rechargeable battery, selected voltage is 3.6 or 7.2V.
Above-mentioned multi-functional onsite colorimetric estimation instrument, described sensor is air mass flow sensor, temperature sensor, pressure transducer and humidity sensor.
The utility model adopts technique scheme, and its distinguishing feature is:
● utilize the utility model, (as formaldehyde and rongalite is GB/T18204,26-2000, GB/T15516-1995, GB/T5009,69-1996 can to adopt national standard method; Ammonia is GB/T18204,25-2000), directly demonstrates the concentration of test substance, the concentration determination of objectionable impuritiess such as the on-the-spot formaldehyde of particularly suitable, rongalite and ammonia.
● the utility model is provided with sensor and air sampling pump, has automatic collection gaseous sample function, but both in situ quantitation was measured gas, also can measure test substance such as various objectionable impuritiess such as formaldehyde, rongalite and ammonia in liquid and the solid sample.
● all adopt plastic tube packing chemical reagent, chemical reaction, colour developing are finished in plastic tube, and sample and reagent dosage are few, and the reagent of using is recyclable, prevent and have reduced secondary pollution.
● sensor installation, gas flow in the time of can showing on-the-spot environment temperature, pressure, humidity and sampling in real time.
● the pulse mode power supply, low in energy consumption, but the lithium rechargeable batteries continuous working stopped input command outage automatically after 10 minutes more than 8 hours.
● the main frame volume little (300 * 200 * 200mm), (3kg) in light weight, simple to operate, easy to carry.
Description of drawings
Fig. 1 is the utility model inner structure synoptic diagram
Fig. 2 is the utility model external structure synoptic diagram
Fig. 3 is the utility model colorimetric pool structural representation
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described:
The multi-functional onsite colorimetric estimation instrument that the utility model proposes is based on that the reaction of test substance and developer generates colored compound in the sample, the principle that this compound absorbs the visible light selectivity and the colorimetric analysis method set up.The utility model is applicable to formaldehyde and ammonia and sulphuric dioxide, ozone, nitrogen dioxide, sulfuretted hydrogen, chlorine, beryllium, pyridine, nitrate, phenolic compound in the colorimetric determination mensuration air, also be applicable to nitrogen in quantitative measurement wood-based plate, furniture, coating, tackifier, wallpaper, carpet, textile, formaldehyde in food and rongalite and soil and the fertilizer, phosphorus, potassium, organic matter, pH value equal size, the mensuration of poisonous and harmful substances such as ubiquitous formaldehyde, rongalite and ammonia in the particularly suitable daily life.
The utility model comprises housing 20 and is included in the inner structure among the housing 20 and is emerging in external structure outside the housing 20.As shown in Figure 1, the utility model inner structure is made of led light source 1, colorimetric pool 2, detecting device 3, microprocessor 4, rechargable power supplies 5, air sampling pump 6 and sensor 7, be connected with circuit by light path between them, this light path is conventional the connection with circuit; As shown in Figure 2, external structure mainly contains LCDs 8, stores button 9, on/off key 16, zeroing button 10, selection key 11, concentration button 12, printer 13, power interface 14, RS-232 interface 15, colorimetric pool set collar 17, gas inlet-outlet 18, bubble absorption tube fixed mount 19 are formed, and display screen 8, stores button 9, zeroing button 10, selection key 11, concentration button 12, printer 13, power interface 14, RS-232 interface 15, ON/OFF 16 and is connected with conventional line with microprocessor 4 respectively; Wherein, the structure of colorimetric pool 2 mainly is made of colorimetric bottle 21, colorimetric bottle rubber stopper 22, colorimetric pool steady arm 23, super bright light emitting diode 24,25,26, integrated electro sensor 27, dop 28, bayonet socket 29 and colorimetric pool housing 30 as shown in Figure 3.
When carrying out sample measurement, send monochromatic light by the colorimetric bottle 21 in the colorimetric pool 2 by led light source 1, after being absorbed have coloured light after testing device 3 become electrical signal transfer and give microprocessor 4, after the computing, the result shows on LCDs 8; When carrying out the gaseous sample sampling, microprocessor 4 is gathered air sample automatically by sensor 7 control sampling pumps 6; Print measurement result by printer 13.The data and the measurement result of storage can pass on the PC by RS-232 interface 15, print the analysis result information list with forms mode.
Led light source 1, colorimetric pool 2, detecting device 3, microprocessor 4, rechargable power supplies 5, air sampling pump 6 and sensor 7 are installed in the housing 20; Colorimetric pool housing 30 is connected with colorimetric pool set collar 17, the colorimetric bottle 21 of band rubber plug 22 is connected with colorimetric bottle steady arm 23, colorimetric bottle 21 is positioned in the colorimetric pool housing 30, colorimetric pool housing 30 upper ends are cylindrical, the lower end is a hexagon, place three super bright light emitting diodes 24,25 and 26 respectively at hexagon one end, the other end relative with it placed an integrated electro sensor 27, its structure such as Fig. 3. Selector button 9,10,11,12 has four, is respectively store button 9, zero-setting button 10, selector button 11 and strength button 12, and they are connected with microprocessor 4 circuits respectively, sends instruction for microprocessor 4; Print measurement result by printer 13.And by the data of storage key 9 storage by RS-232 interface 15 and PC communication, provide the analysis result information list by PC; Power interface 14 1 ends are connected with the 220V power supply, and the other end is connected with the rechargable power supplies 5 of instrument internal, provides energy to instrument.The bubble that is provided for air sampling on housing 20 is inhaled bottle fixed mount 19 and gas inlet-outlet 18.
In the present embodiment, led light source 1 is super bright light emitting diode 24,25,26, they are not only done the light source while but also make monochromator, manufacturer is the Ri Ya company of Japan, wavelength is respectively 412nm, 430nm, 470nm, 520nm, 550nm, 575nm, 610nm, 630nm, 860nm, luminance parameter must can adopt continuously or the pulse mode power supply more than 3000mcd; Colorimetric bottle 21 is the vial of band rubber plug 22, and its external diameter is 10～60mm, and 5mL, 10mL, 20mL, 30mL, 40mL and 50mL scale mark are arranged on the vial surface, and colorimetric bottle rubber plug 22 can closely cooperate with colorimetric bottle 21, prevents that solution overflows in the colorimetric bottle; The material that colorimetric bottle steady arm 23 adopts is plastics, be connected with colorimetric bottle 21 screw thread mouths, can freely insert location in the colorimetric pool housing 30, colorimetric bottle 21 can be for a plurality of, the material that colorimetric pool housing 30 adopts is plastics, copper, aluminium or steel, colorimetric pool housing 30 internal diameters are 10.1～60.1mm, and the upper end external diameter is 16～66mm, are affixed on the housing 20 by colorimetric pool set collar 17; Make colorimetric bottle 21 location by the bayonet socket 29 on dop on the colorimetric bottle steady arm 23 28 and the colorimetric pool 2; The outside, colorimetric pool housing 30 lower ends is a hexagon, wherein an end is all installed 9 different wave length (412nm side by side on three square, 430nm, 470nm, 520nm, 550nm, 575nm, 610nm, 630nm, 860nm) super bright light emitting diode 24,25,26, and relative with it in addition on three square (other end relative) with super bright light emitting diode three detecting devices 27 are installed, detecting device 27 is the integrated electro sensor, model is respectively TSL201, TSL202, TSL208, TSL230, TSL235, TSL245, TSL250, TSL251, TSL252, TSL253, TSL254, TSL255, TSL257 and TSL260, its major parameter are that spectral response is 350～1000nm; Microprocessor 4 is produced for PHILIPS Co., and model is respectively P51, P52 series, saves as 64K in its major parameter; The built-in rechargable power supplies 5 of instrument is the lithium ion battery of 3.6V or 7.2V, be connected with power interface 14, when power interface 14 is connected with the 220V power supply, automatically give rechargable power supplies 5 chargings, and cut off rechargable power supplies 5 and give instrument supply line, when taking off the 220V power supply, charge power supply 5 is powered to instrument automatically; The sensor 7 that is connected with microprocessor 4 is respectively gas flow sensor, ambient pressure sensor, temperature sensor and humidity sensor, can control the collection capacity of air sampling pump 6 automatically, and in real time display environment pressure, temperature and humidity.
Below with the example that is determined as of formaldehyde, introduce using method of the present utility model in conjunction with concrete operations:
Operation steps
Sample collecting and preparation:
● the collection of gaseous sample and preparation: collect gaseous sample to be measured by the bubble absorption tube with the air sampling pump.Pack in the bubble absorption tube absorbent solution of gas to be measured after gas to be measured absorbs by the solution in the bubble absorption tube, is transferred to solution in the bubble absorption tube in No. 2 colorimetric bottles.Below the sample determination example is seen in operation.
● the collection of fluid sample and preparation: directly fluid sample solution to be measured is transferred in No. 2 colorimetric bottles.Below operation sees that sample determination sees example.
● the collection of fixed sample and preparation: the accurate a certain amount of solid sample to be measured of weighing, be put in the colorimetric bottle 2, be diluted to scale after being dissolved in water.Below the sample determination example is seen in operation.
The sample determination example:
Blank measure: accurately remove ionized water in No. 1 colorimetric bottle groove place, in No. 1 colorimetric bottle, pour formaldehyde reagent (one) developer of a pipe plastic tube sealing into, cover the colorimetric bottle rubber plug, shake dissolving after, reacted 30 minutes.
Sample measurement: simultaneously accurately get sample, in No. 2 colorimetric bottles, pour formaldehyde reagent (one) developer of a pipe plastic tube sealing into, cover the color comparison tube rubber plug in No. 2 colorimetric bottle groove places, shake dissolving after, reacted 30 minutes.
Take off the rubber plug of No. 1 colorimetric bottle and No. 2 colorimetric bottles, the formaldehyde reagent (two) that each adds a pipe plastic tube sealing covers the colorimetric bottle rubber plug and shakes up, and cleans two colorimetric bottle outer walls, screws the colorimetric bottle steady arm, develops the color 15 minutes.
No. 1 colorimetric bottle is put into colorimetric pool and locked colorimetric bottle, by " ON/OFF " key, open instrument, after " " occurring on the instrument liquid crystal display, by " zeroing " key, occur " 0.00 ", this moment, blank zeroing was finished.
Take off colorimetric bottle No. 1, No. 2 colorimetric bottles are put into colorimetric pool and locked colorimetric bottle, by " concentration " key, the numerical value that occurs on the LCDs is the concentration of formaldehyde in the sample.Can go out measurement result by selective printing by " selection " key, data can be preserved by " storage " key.
Use said method, can measure airborne ammonia, sulphuric dioxide, ozone, nitrogen dioxide, sulfuretted hydrogen, chlorine, beryllium, pyridine, nitrate, phenolic compound etc. equally, too can quantitative measurement food, nitrogen, phosphorus, potassium, organic matter, pH value etc. in the rongalite in textile and the decorating and renovating material (wood-based plate, furniture, coating, tackifier, wallpaper, carpet) and soil and the fertilizer, developer (one) and developer (two) will be prepared respectively according to different test substances.
Through check, technical indicator of the present utility model can reach:
● lower mensuration lower limit: as the mensuration lower limit of formaldehyde: 0.01mg/m
3(gas sampling, sampling volume are 15 liters), 0.03mg/L (formaldehyde, rongalite fluid sample), 0.03mg/kg (formaldehyde, rongalite solid sample); The mensuration lower limit of ammonia: 0.05mg/m
3(gas sampling, sampling volume are 15 liters).
● the measurement range of broad: formaldehyde 0.00 ~ 1.00mg/m
3(gas sampling, sampling volume are 15 liters), 0.00 ~ 1.00mg/L (formaldehyde, rongalite fluid sample), 0.00 ~ 1.00mg/kg (formaldehyde, rongalite solid sample); The measurement range of ammonia: 0.00 ~ 10.00mg/m
3(gas sampling, sampling volume are 15 liters).
● measuring accuracy :≤5%
● measuring method: all can adopt standard determination method, as measuring formaldehyde, rongalite employing GB phenol reagent, diacetone reagent, chromotropic acid reagent and AHMT reagent method; Measure ammonia and adopt GB nessler reagent method.
● instrument working environment: 5 ~ 40 ℃
● instruments weight: 3kg
That the utility model instrument has is in light weight, measure accurately, precision characteristics high, easy to use, can be extensive Be used for residential area, indoor air, public place, furniture, floor, wallpaper, coating, gardening, interior decoration With trimming, dyestuff, papermaking, pharmacy, medical treatment, anticorrosion, sterilization, chemical fertilizer, resin, adhesive and agricultural chemicals, Formaldehyde, rongalite and ammonia and two in raw material, sample, technical process and workshop and the life area Sulfur oxide, ozone, nitrogen dioxide, hydrogen sulfide, chlorine, beryllium, pyridine, nitrate, phenolic compound, nitrogen, The in situ quantitation of phosphorus, potassium, organic matter, pH value is measured.
Claims (5)
1, a kind of multi-functional onsite colorimetric estimation instrument, it comprises housing (20), be included in the inner structure among the housing (20) and be emerging in external structure outside the housing (20), and described inner structure is connected and composed by led light source (1), colorimetric pool (2), detecting device (3), microprocessor (4), rechargable power supplies (5) air sampling pump (6) and sensor (7) light path and circuit; Described external structure is by LCDs (8), store button (9), zeroing button (10), selection key (11), concentration button (12), printer (13), power interface (14), RS-232 interface (15), ON/OFF (16), colorimetric pool set collar (17), gas inlet-outlet (18), bubble absorption tube fixed mount (19) is formed, described display screen (8), store button (9), zeroing button (10), selection key (11), concentration button (12), printer (13), power interface (14), RS-232 interface (15), ON/OFF (16) is connected with microprocessor (4) circuit respectively, it is characterized in that:
Mainly comprise colorimetric bottle (21), colorimetric bottle rubber stopper (22), colorimetric bottle steady arm (23), super bright light emitting diode (24,25,26), integrated electro sensor (27), dop (28), bayonet socket (29) and colorimetric pool housing (30) in the described colorimetric pool (2); Described colorimetric pool housing (30) upper end is connected with colorimetric pool set collar (17), the outside, colorimetric pool housing (30) lower end is a hexagon, wherein go up 9 different wave length superhigh brightness LEDs (24 of installation for three square, 25,26), 3 detecting devices (3) are installed: the glass colorimetric bottle (21) of in colorimetric pool (2), placing the band scale on three square faces corresponding with it, the bottleneck of colorimetric bottle (21) seals with rubber stopper (22), establish dop (28) on the colorimetric bottle steady arm (23), establish dop (28) on the colorimetric pool (2), by dop (28) and bayonet socket (29) location colorimetric bottle (21).
2, multi-functional onsite colorimetric estimation instrument according to claim 1, it is characterized in that: described super bright light emitting diode (24,25,26), both made light source, make monochromator again, 9 kinds of monochromatic super bright light emitting diodes of different wave length such as available 412nm, 430nm, 470nm, 520nm, 550nm, 575nm, 610nm, 630nm and 860nm.
3, multi-functional onsite colorimetric estimation instrument according to claim 1 and 2, it is characterized in that: described detecting device (3) is an integrated electro sensor (27), and model is TSL201, TSL202, TSL208, TLS220, TSL230, TSL235, TSL245, TSL250, TSL251, TSL252, TSL253, TSL254, TSL255, TSL257, TSL260, TSL261 and TSL262.
4, multi-functional onsite colorimetric estimation instrument according to claim 1 and 2 is characterized in that: described rechargable power supplies (5) is a Li-Ion rechargeable battery, and selected voltage is 3.6 or 7.2V.
5, multi-functional onsite colorimetric estimation instrument according to claim 1 and 2 is characterized in that: described sensor (7) is air mass flow sensor, temperature sensor, pressure transducer and humidity sensor.
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| CN 02234891 CN2634469Y (en) | 2002-05-20 | 2002-05-20 | Multifunction on-site colour comparatour |
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| CN101625318B (en) * | 2009-08-12 | 2010-11-03 | 南京信息工程大学 | Intelligent indoor gas formaldehyde concentration measuring apparatus |
| CN1957246B (en) * | 2004-03-24 | 2010-11-24 | 3M创新有限公司 | Colorimetric sensor |
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| CN102749318A (en) * | 2012-07-19 | 2012-10-24 | 北京雪迪龙科技股份有限公司 | Device and method for detecting formaldehyde |
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| CN103149202A (en) * | 2013-02-21 | 2013-06-12 | 苏州智能泰克有限公司 | Portable formaldehyde concentration detection apparatus and method |
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