CN206573545U - Formaldehyde module caliberating device - Google Patents
Formaldehyde module caliberating device Download PDFInfo
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- CN206573545U CN206573545U CN201720008673.0U CN201720008673U CN206573545U CN 206573545 U CN206573545 U CN 206573545U CN 201720008673 U CN201720008673 U CN 201720008673U CN 206573545 U CN206573545 U CN 206573545U
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Abstract
The utility model discloses a kind of caliberating device of formaldehyde module, the demarcation box with an accommodating chamber；For the heating plate for evaporating the formalin solution of demarcation rapidly, the heating plate is fixed in the accommodating chamber of demarcation box；For the micro syringe that formalin solution is placed on the heating plate；Fan for ensureing formaldehyde gas uniformity in demarcation box；At least one auxiliary circuit board, the auxiliary circuit board is by connection in computer, and the auxiliary circuit board is arranged in the accommodating chamber；At least one formaldehyde module to be calibrated, the auxiliary circuit board is electrically connected with formaldehyde module.The utility model is demarcated using the formaldehyde and the quantitative method PARA FORMALDEHYDE PRILLS(91,95) module of methanol determined in volume volatility process and combination national standard, realize the cost degradation and mass of formaldehyde module demarcation, with the formaldehyde gas concentration needed for producing that can follow one's bent, it is possible to achieve the advantages of selectivity is demarcated formaldehyde and can demarcated in batches.
Description
Technical field
The utility model is related to transducer calibration technical field, more specifically to a kind of formaldehyde module caliberating device.
Background technology
For the module producer and user, demarcation can be carried out to module with simple and fast and be very important, this is just
It is required that we there will be accurate marked gas to originate, and the influence of other interference gases that may be present can be eliminated.At present
There are 4 kinds of methods to carry out the demarcation of formaldehyde module, respectively gas bomb mixing method, volatility process, diffusion method and permeation tube method.
Gas bomb mixing method is that the formaldehyde gas and other inertia background gas that are contained with steel cylinder are mixed, to produce
Formaldehyde standard gas with certain concentration, then formaldehyde module to be calibrated is placed in the calibrating gas environment demarcated.
The shortcoming of this method is that formaldehyde gas is extremely unstable, can polymerize at any time, cause gas concentration to change；It is long-term in addition
Store a large amount of gases and there is potential safety hazard.
Permeation tube method is that by the high polymer of formaldehyde --- metaformaldehyde is placed in osmos tube, solid is allowed by controlling temperature
Metaformaldehyde is decomposed generation formaldehyde vapor, and produced steam is diffused out from the tube wall of osmos tube enters ring to be calibrated
In border.The shortcoming one of this method is that equipment is very expensive, is not suitable for medium-sized and small enterprises' buying；Two be gas preparation time very
It is long, it usually needs half a day, by two days, is not suitable for production enterprise and carries out a large amount of continuous productions；Three be that produced gas flow is non-
It is often few, it is suitable only for low concentration demarcation.
Volatility process is that inert gas is passed through in certain density formalin, and formaldehyde gas is taken out of to be diffused into and waits to mark
Determine in environment.The shortcoming of this method is that accuracy is poor, occurs the concentration of gas by temperature, used inert gas flow
Influence etc. factor is very big；And the gas concentration generated is uncertain, it is necessary to re-scale.
Diffusion method is similar with osmosis, and difference part is in diffusion method it is that formalin solution is placed in anemostat to lead to
Cross and control certain temperature to allow liquid formaldehyde to evaporate into gas and be in contact to form finite concentration with carrier gas in the outlet of anemostat
Mixed gas.The shortcoming of this method is similar with osmosis, there is also gas concentration occurred is low, the shortcomings of time of origin is long,
In addition the accuracy of gas occurred is influenced by temperature very greatly, very high to the temperature control accuracy requirement of equipment.
Application No. CN201520080724.1, patent name are the practicality that a kind of multichannel formaldehyde gathers Intelligent Calibration system
New patent, is demarcated for PARA FORMALDEHYDE PRILLS(91,95) collection sensor, and disclosed calibration system uses formaldehyde standard gas bottle to formaldehyde
Formaldehyde standard gas is provided in Calibration Box, and the concentration of formaldehyde gas in formaldehyde Calibration Box is detected with PPM methylene oxide detecting instruments, according to
The concentration for the formaldehyde gas that PPM methylene oxide detecting instruments are detected, is demarcated to formaldehyde collection sensor to be calibrated.The system lacks
Point is to need formaldehyde standard gas bottle, PPM methylene oxide detecting instruments extremely related accessories, and system architecture is complicated, and cost is high；Formaldehyde gas
Highly unstable, concentration can be changed due to polymerisation at any time；There is potential safety hazard in a large amount of gases of longer-term storage；PPM
Methylene oxide detecting instrument can be impacted if there is failure to the accuracy of calibration result.
Utility model content
The technical problems to be solved in the utility model be in the prior art can not simply, obtain marked gas exactly
The problems such as originating, or can not eliminate the influence of interference gas is entered there is provided a kind of inexpensive, simple and easy to apply PARA FORMALDEHYDE PRILLS(91,95) module
The fixed device of rower and its application method, can selectively demarcate formaldehyde and batch is demarcated.
In order to solve the above technical problems, the technical scheme that the utility model is provided is：
A kind of formaldehyde module caliberating device, including：
Demarcation box with an accommodating chamber；
For the heating plate for evaporating the formalin solution of demarcation rapidly, the heating plate is fixed on the appearance of demarcation box
Receive intracavitary；
For the micro syringe that formalin solution is placed on the heating plate；
Fan for ensureing formaldehyde gas uniformity in demarcation box；
At least one auxiliary circuit board, the auxiliary circuit board by connection in computer, the auxiliary circuit board
It is arranged in the accommodating chamber；
At least one formaldehyde module to be calibrated, the auxiliary circuit board is electrically connected with formaldehyde module；The formaldehyde mould
Group is fixed in the accommodating chamber of the demarcation box.
Further, the formaldehyde module includes formaldehyde sensor and mould-group circuit-board, the formaldehyde sensor and module
It is electrically connected between circuit board；Mould-group circuit-board is electrically connected with the auxiliary circuit board.
Further, the auxiliary circuit board is electrically connected with multiple formaldehyde modules.
Further, the auxiliary circuit board in the demarcation box has multiple.
Further, the demarcation box side is provided with least one injection port, and the micro syringe passes through injection port
Formalin solution is placed on the heating plate, the injection port is provided with closure.
Further, the fan has multiple.
The beneficial effects of the utility model：
Formaldehyde module caliberating device described in the utility model using determine volume volatility process and combine the formaldehyde in national standard with
The quantitative method PARA FORMALDEHYDE PRILLS(91,95) module of methanol is demarcated, and can be obtained concentration accurately and reliably formaldehyde standard gas, be solved bottle
Dress formaldehyde standard gas is unstable and osmosis can not carry out the problem of batch is demarcated, and realizes the low of formaldehyde caliberating device
Cost, with the formaldehyde gas concentration needed for producing that can follow one's bent, it is possible to achieve selectivity demarcation formaldehyde and can be with
Realize the advantages of batch is demarcated.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model formaldehyde module one preferred embodiment of caliberating device；
Fig. 2 is the internal structure schematic diagram of the utility model formaldehyde module one preferred embodiment of caliberating device；
Fig. 3 is the structural representation of the utility model formaldehyde module.
Reference includes：
1- demarcates box 2- heating plate 3- fans
4- auxiliary circuit board 5- computer 6- injection ports
7- micro syringe 8- closure 9- formaldehyde modules
91- formaldehyde sensor 92- mould-group circuit-boards
Embodiment
The utility model is described in detail below in conjunction with accompanying drawing.
For the module producer and user, demarcation can be carried out to module with simple and fast and be very important, this is just
It is required that we there will be accurate marked gas to originate, and the influence of other interference gases that may be present can be eliminated.For up to
To above-mentioned purpose, the utility model obtains the mark of certain concentration in the calibration process of formaldehyde module 9 using volume volatility process is determined
Quasi- gas, is described in detail below：
A kind of formaldehyde module caliberating device, including demarcation box 1, heating plate 2, fan 3, auxiliary circuit board 4 and computer 5.
Demarcating box 1 has an accommodating chamber, and good airproof performance, volume is fixed and, it is known that in the present embodiment, during demarcation box 1 is
Empty rectangular box, conveniently calculates its volume.The side of demarcation box 1 is provided with least one injection port 6, and injection port 6 is installed
There is closure 8, the formalin solution for injecting certain volume into demarcation box 1.
In the present embodiment, heating plate 2 is installed in the demarcation accommodating chamber of box 1, the micro syringe 7 crossed with accurate quantitative analysis is measured
Solution, is slowly added dropwise on heating plate 2, makes formalin solution fast by the formalin solution of certain volume by injection port 6
Speed evaporates into the mixed gas used in demarcation.Injection port 6 and closure 8 prevent mixed gas from being spread out from demarcation box 1.
In the present embodiment, at least one fan 3 is installed in demarcation box 1, for ensureing that the gas in demarcation box 1 uniformly divides
Cloth.
Be additionally provided with least one auxiliary circuit board 4 inside the accommodating chamber for demarcating box 1, auxiliary circuit board 4 and at least one
Formaldehyde module 9 to be calibrated is electrically connected with, and can be powered for formaldehyde module 9, and as terminal and be installed on computer 5
Calibration software is connected.One auxiliary circuit board 4 can be connected with multiple formaldehyde modules 9, in one embodiment, an auxiliary
Circuit board 4 is connected with 10 formaldehyde modules 9, and each formaldehyde module 9, which has in corresponding sequence number, demarcation box 1, can also set many
Individual auxiliary circuit board 4, to realize that batch is demarcated.In one embodiment of the present utility model, formaldehyde module 9 can be set to determine
Position plate, is easy to position and reference numerals to formaldehyde module 9.
Formaldehyde module 9 is made up of formaldehyde module 91 and mould-group circuit-board 92, formaldehyde sensor 91 and mould-group circuit-board 92 it
Between be electrically connected with, mould-group circuit-board 92 is electrically connected with auxiliary circuit board 4.Formaldehyde module 9 is fixed on the accommodating chamber of demarcation box 1
Interior, in the presence of having formaldehyde gas in environment, the formaldehyde module 9 can be catalyzed formaldehyde gas and produce certain electric signal, module
Circuit board 92 can detect the electric signal, store it in from carrying space, receive by working as that calibration software reception and registration comes
During content of formaldehyde gas in preceding demarcation environment, the sensitivity of formaldehyde module 9 is calculated by the instruction of calibration software, draws and marks
Determine curve and be stored in from carrying space；The electric signal collected is converted into concentration value in real time simultaneously, to realize formaldehyde module 9
Demarcation.
The electric signal that mould-group circuit-board 92 is collected is uploaded to the mark being installed on computer 5 by auxiliary circuit board 4
Determine software, if formaldehyde module 9 has multiple, auxiliary circuit board 4 successively uploads electric signal according to the corresponding sequence number of formaldehyde module 9
To the calibration software being installed on computer 5.
Calibration software can be calculated when receiving the formaldehyde 9 corresponding electric signal of module of different sequence numbers according to default
Journey is demarcated to each formaldehyde module 9, and is write the result into the internal memory that mould-group circuit-board 4 is carried.
Because the content that the volume for demarcating box 1 is formaldehyde and methanol in certain, added formalin solution is also one
Fixed, so the equivalent concentration of the formaldehyde gas obtained is also fixed, it is readily available certain density formaldehyde Standard Gases
Body, it is not necessary to the equipment or storage formaldehyde standard gas of extra detection formaldehyde gas concentration.And can be according to micro-injection
The volume of formalin solution in device 7, the formaldehyde gas concentration needed for adjustment, is used simple and convenient.
Formalin solution, that is, the formalin that content of formaldehyde is 37~40% are generally used in calibration process.
Formalin solution configure during in order to prevent oxymethylene polymerization to be usually added into a certain amount of methanol prevent polymerization (referring to
National standard GB/T685-1993), the methanol content added be the methanol content that is added in 15~20%, and each batch with
And content of formaldehyde is all different, it is necessary to can just be used after strictly being quantified to it.Because most of formaldehyde modules 9 do not possess
The performance of selective enumeration method, that is, formaldehyde module 9 is in addition to it can detect formaldehyde, can also detect methanol.With the present apparatus
When PARA FORMALDEHYDE PRILLS(91,95) module 9 is demarcated, demarcation mixed gas used includes formaldehyde gas and methanol gas, therefore, in demarcation
Need first to calculate the relative sensitivity of each methanol PARA FORMALDEHYDE PRILLS(91,95) of formaldehyde module 9, then in the mixed gas used in demarcation
Methanol be converted into formaldehyde by above-mentioned relative sensitivity, obtain formaldehyde equivalent concentration, then demarcated, circular is such as
Under：
(1) in formalin solution content of formaldehyde calculating
National standard GB/T685-1993《Chemical reagent formalin solution》4.1 define formaldehyde in formalin solution and contain
The assay method of amount, concrete operation step is as follows：50mL sodium sulfite solutions (126g/L) are measured, are placed in 250mL conical flasks,
Plus 3 and drip thymolphthalein indicator solution (1g/L), with sulfuric acid standard titration solution [c (1/2H2SO4)=1mol/L] be titrated to it is colourless.
3.2g (3mL) formalin solution sample is weighed, 0.0001g is accurate to, is placed in above-mentioned solution, shake up and use sulfuric acid standardized titration
Solution [c (1/2H2SO4)=1mol/L] it is titrated to solution and is become colorless by blueness.It can obtain in formalin solution, formaldehyde
Weight/mass percentage composition, use XFormaldehydeRepresent.
Content of formaldehyde is calculated as follows：
XFormaldehyde=v × C × 0.03003/m × 100
XFormaldehydeThe percentage composition of-formaldehyde；
V- samples consume the volume of sulfuric acid standard titration solution；
The concentration of C- sulfuric acid standard titration solutions；
0.03003- and 1.00mL sulfuric acid standard titration solution [c (1/2H2SO4)=1.000mol/L] suitable, with a gram table
The quality of the formaldehyde shown；
The quality of m- formalin solution samples.
(2) in formalin solution methanol content calculating
According to above formula, the exact level of formaldehyde in formalin solution used is accurately determined, referring to national standard
The methanol concentration that GB/T685-1993 and GB/T611-1988 come in solution used in accurate quantitative analysis.First, according to national standard GB/
T611-1988《Chemical reagent density measurement universal method》5.1 determine formalin solution density, represented with ρ, then root
According to national standard GB/T685-1993《Chemical reagent formalin solution》, the density p by formalin solution and the regulation by 4.1
The percentage composition X of the formaldehyde measuredFormaldehyde, the A1 that tables look-up obtains the content of methanol in formalin solution, uses XMethanolRepresent.
(3) calculating of concentration of formaldehyde in mixed gas used is demarcated
Due to the volume v ' for the formalin solution that micro syringe 7 is measuredFormalin volumeWith the volume V of demarcation box 1Demarcate boxAll
It is known, it is known that the percentage composition X of formaldehyde in the density p and formalin solution of formalin solutionFormaldehyde, can calculate
When formalin solution evaporates into gas, the concentration of formaldehyde in the mixed gas used in resulting demarcation.With micro syringe 7
The volume of a certain amount of formalin solution is weighed, v ' is designated asFormalin volume, formalin solution is had been obtained in above-mentioned (1)
The content X of middle formaldehydeFormaldehyde, can calculate and obtain volume for v 'Formalin volumeThe quality of middle formaldehyde is v 'Formalin volumeρXFormaldehyde, obtain formaldehyde
Relative molecular mass MFormaldehyde, volume can be calculated for v 'Formalin volumeThe amount n of the material of middle formaldehyde is v 'Formalin volumeρXFormaldehyde/MFormaldehyde,
Because the amount of material material under gaseous state and liquid keeps constant, further according to The Ideal-Gas Equation, you can calculating is obtained often
Normal temperature and pressure lower volume is v 'Formalin volume, formaldehyde content XFormaldehydeVolume of formalin solution when evaporating into formaldehyde gas be
v′Formalin volumeρXFormaldehydeRT/MFormaldehydeP, obtains the volume V of demarcation box 1Demarcate box, calculate in demarcation box 1 in demarcation mixed gas used
The concentration C of formaldehydeFormaldehyde。
The concentration of formaldehyde is calculated as follows in demarcation mixed gas used：
CFormaldehyde=v 'Formalin volumeρXFormaldehydeRT/MFormaldehydePVDemarcate box
CFormaldehydeThe concentration of formaldehyde in-demarcation mixed gas used；
v′Formalin volumeThe volume for the formalin solution that-micro syringe 7 is weighed；
The density of ρ-formalin solution；
XFormaldehydeThe content of formaldehyde in-formalin solution；
MFormaldehydeThe relative molecular mass of-formaldehyde；
R- ideal gas constants；
T- normal temperature；
P- normal pressures；
VDemarcate boxThe volume of-demarcation box 1.
Wherein, R value is about 8.3145, and normal temperature T generally takes 298K, normal pressure p to take 101325pa, MFormaldehydeFor 30.
(4) calculating of methanol concentration in mixed gas used is demarcated
Methanol concentration refers under normal temperature and pressure in mixed gas, formalin solution volatilization pure methanol gas volume with
The ratio of the volume of box 1 is demarcated, computational methods are demarcated in mixed gas used described in the calculating of concentration of formaldehyde with (3), demarcation
The concentration of methanol is calculated as follows in mixed gas used：
CMethanol=v 'Formalin volumeρXMethanolRT/MMethanolPVDemarcate box
CMethanolThe concentration of methanol in-demarcation mixed gas used；
v′Formalin volumeThe volume for the formalin solution that-micro syringe 7 is weighed；
The density of ρ-formalin solution；
XMethanolThe content of methanol in-formalin solution；
MMethanolThe relative molecular mass of-methanol；
R- ideal gas constants；
T- normal temperature；
P- normal pressures；
VDemarcate boxThe volume of-demarcation box 1.
Wherein, R value is about 8.3145, and normal temperature T generally takes 298K, normal pressure p to take 101325pa, MFormaldehydeFor 32.
(5) measure of the formaldehyde module 9 to methanol sensitivity
There are the methanol standard substance of certain concentration on sale, the liquid first of such as high purity 99.9% on the market at present
Its density p under alcohol, normal temperature ' it is 0.791g/mL.So in demarcation, we, which first calibrate, carrys out formaldehyde module 9 to the sensitive of methanol
Degree.Accurately weigh vMethanol volumeMethanol, according to the density p of methanol ', volume can be calculated for vMethanol volumeMethanol quality m=
vMethanol volumeρ′.It is v by volumeMethanol volumeMethanol micro syringe 7 be placed on heating plate 2, demarcation box 1 in volatilized.Obtain
Take the relative molecular mass M of methanolMethanol, you can volume is calculated for vMethanol volumeMethanol in methanol material amount vMethanol volumeρ′/
MMethanol, because the amount of material of the material under gaseous state and liquid keeps constant, further according to The Ideal-Gas Equation, you can calculate
Volume is obtained for vMethanol volumeMethanol, at normal temperatures and pressures, volume when evaporating into methanol gas is vMethanol volumeρ′RT/MMethanolP, is obtained
Take the volume V of demarcation box 1Demarcate box, calculate the concentration W of methanol gas in demarcation box 1Methanol=vMethanol volumeρ′RT/MMethanolpVDemarcate box。
Formaldehyde module 9 is opened, the methanol gas in 9 pairs of demarcation boxes 1 of formaldehyde module is detected, formaldehyde module 9 is existed
Net electric signal produced by during detection methanol gas is designated as Δ VMethanol, sensitivity of the formaldehyde module 9 to methanol counts as the following formula
Calculate：
SMethanol=Δ VMethanol/WMethanol
By WMethanolBring into above formula, sensitivity S of the formaldehyde module 9 to methanol can be obtainedMethanol：
SMethanol=Δ VMethanol·MMethanol·p·VDemarcate box/(vMethanol volume·ρ′·R·T)。
SMethanolSensitivity of-formaldehyde the module 9 to methanol；
P- normal pressures；
VDemarcate boxThe volume of-demarcation box 1；
The density of ρ '-methanol；
R- ideal gas constants；
T- normal temperature.
(6) calculating of formaldehyde sensitivity
Formaldehyde and methanol in response by formaldehyde module 9 to mixed gas, and the mixed gas being derived above again
Content can just draw the sensitivity of sensor PARA FORMALDEHYDE PRILLS(91,95), use SFormaldehydeRepresent, for details, reference can be made to below equation：
SFormaldehyde=(Δ V 'Formalin-CMethanol·SMethanol)/CFormaldehyde
SFormaldehydeThe sensitivity of the PARA FORMALDEHYDE PRILLS(91,95) of-formaldehyde module 9；
ΔV′Formalin- in the net electric signal produced by formaldehyde module 9 during demarcation formalin solution；
CMethanolThe concentration of methanol in-demarcation mixed gas used；
SMethanolSensitivity of-formaldehyde the module 9 to methanol；
CFormaldehydeThe concentration of formaldehyde in-demarcation mixed gas used.
(7) formaldehyde module 9 is calculated the relative sensitivity of methanol
The relative sensitivity of methanol can be calculated as follows formaldehyde module 9：
S%=SMethanol/SFormaldehyde100%；
Relative sensitivity of the S%- formaldehyde module 9 to methanol；
SMethanolSensitivity of-formaldehyde the module 9 to methanol；
SFormaldehydeThe sensitivity of the PARA FORMALDEHYDE PRILLS(91,95) of-formaldehyde module 9.
So even with same middle formalin solution, each formaldehyde module 9 is different to the relative sensitivity of methanol, needs
Relative sensitivity of each formaldehyde module 9 to methanol is obtained one by one.
(8) formaldehyde is centinormal 1 calculates
Because the PARA FORMALDEHYDE PRILLS(91,95) of formaldehyde module 9 and methanol have response, so the concentration that formaldehyde module 9 is detected is formaldehyde and first
The concentration of alcohol mixed gas, the utility model is by the concentration conversion of methanol into formaldehyde equivalent concentration, and formaldehyde equivalent concentration is as the following formula
Calculate：
CAlways=CFormaldehyde+CMethanolS%
CAlways- demarcation mixed gas formaldehyde equivalent concentration used；
CFormaldehydeThe concentration of formaldehyde in-demarcation mixed gas used；
CMethanolThe concentration of methanol in-demarcation mixed gas used；
Relative sensitivity of the S%- formaldehyde module 9 to methanol.
The scaling method of formaldehyde module caliberating device described in the utility model, is comprised the following steps that：
S1：Obtain output voltage values V of the formaldehyde module (9) in pure air0；Body is measured by micro syringe (7)
Product is vMethanol volumeMethanol, pure methanol is added on heating plate (2), and open fan (3) with ensure demarcate box (1) interior methanol gas
The uniformity of body；Obtain formaldehyde module (9) and detect that the volume is vMethanol volumeMethanol output electric signal VMethanol；Calculate formaldehyde mould
Group (9) detects that the volume is vMethanol volumeMethanol produced by net electric signal Δ VMethanol：ΔVMethanol=VMethanol-V0。
S2：The volume is obtained for vMethanol volumePure methanol be added to the concentration of the methanol gas produced by demarcation box (1)
CMethanol, calculate sensitivity S of the formaldehyde module (9) to methanolMethanol：
SMethanol=Δ VMethanol/CMethanol。
S3：The methanol gas in demarcation box is replaced with pure air, and ensures that the output voltage of formaldehyde module (9) recovers steady
It is fixed.
S4：The initial output voltage for obtaining formaldehyde module (9) is recorded as V0′；Volume is measured with micro syringe (7)
v′Formalin volumeFormalin solution, solution is added on heating plate (2), open fan (3) with ensure demarcate box (1) interior gas
Uniformity, and record formaldehyde module (9) output magnitude of voltage V 'Formalin；Calculate the net telecommunications produced by formaldehyde module (9)
Number：
ΔV′Formalin=V 'Formalin-V0′。
S5：Calculating volume is v 'Formalin volumeFormalin solution in contained formaldehyde and methanol content, and calculate
Go out the concentration C of formaldehyde in the gas generated after the formalin solution of the volume is added in demarcation box (1)FormaldehydeWith
The concentration C of methanolMethanol, and formaldehyde module (9) is calculated as the electric signal produced by formaldehyde：
ΔVFormaldehyde=Δ V 'Formalin-CMethanol·SMethanol；
S6：Calculate the sensitivity that formaldehyde module (9) detects formaldehyde：
SFormaldehyde=Δ VFormaldehyde/CFormaldehyde；
S7：Calculate relative sensitivity of formaldehyde module (9) the detection methanol relative to formaldehyde：
S%=SMethanol/SFormaldehyde100%；
S8：The gas summation of formaldehyde in the formalin solution and methanol is converted into the concentration of pure formaldehyde, claimed
For formaldehyde equivalent concentration CAlways：
CAlways=CFormaldehyde+CMethanolS%
S9：By the formaldehyde equivalent concentration CAlwaysSend to computer (5) to demarcate formaldehyde module (9).
Above content is only preferred embodiment of the present utility model, for one of ordinary skill in the art, according to this reality
, in specific embodiments and applications can be so that many changes may be made, as long as these changes are without departing from this with new thought
The design of utility model, belongs to protection domain of the present utility model.
Claims (6)
1. a kind of formaldehyde module caliberating device, it is characterised in that including：
Demarcation box (1) with an accommodating chamber；
For the heating plate (2) for evaporating the formalin solution of demarcation rapidly, the heating plate (2) is fixed on demarcation box
(1) in accommodating chamber；
For the micro syringe (7) being placed in formalin solution on the heating plate (2)；
Fan (3) for ensureing demarcation box (1) interior formaldehyde gas uniformity；
At least one auxiliary circuit board (4), the auxiliary circuit board (4) is by connection in computer (5), the auxiliary electricity
Road plate (4) is arranged in the accommodating chamber；
At least one formaldehyde module (9) to be calibrated, the auxiliary circuit board (4) is electrically connected with formaldehyde module (9)；The first
Aldehyde module (9) is fixed in the accommodating chamber of the demarcation box (1).
2. a kind of formaldehyde module caliberating device according to claim 1, it is characterised in that the formaldehyde module (9) includes
Formaldehyde sensor (91) and mould-group circuit-board (92), electrically connect between the formaldehyde sensor (91) and mould-group circuit-board (92)
Connect；Mould-group circuit-board (92) is electrically connected with the auxiliary circuit board (4).
3. a kind of formaldehyde module caliberating device according to claim 2, it is characterised in that the auxiliary circuit board (4) with
Multiple formaldehyde modules (9) are electrically connected with.
4. a kind of formaldehyde module caliberating device according to claim 3, it is characterised in that auxiliary in the demarcation box (1)
Circuit board (4) is helped to have multiple.
5. a kind of formaldehyde module caliberating device according to claim 4, it is characterised in that the demarcation box (1) sets sideways
At least one injection port (6) is equipped with, formalin solution is placed in described add by the micro syringe (7) by injection port (6)
On backing (2), the injection port (6) is provided with closure (8).
6. a kind of formaldehyde module caliberating device according to claim 5, it is characterised in that the fan (3) has multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720008673.0U CN206573545U (en) | 2017-01-04 | 2017-01-04 | Formaldehyde module caliberating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720008673.0U CN206573545U (en) | 2017-01-04 | 2017-01-04 | Formaldehyde module caliberating device |
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| CN206573545U true CN206573545U (en) | 2017-10-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267544A (en) * | 2017-01-04 | 2018-07-10 | 深圳市普晟传感技术有限公司 | Formaldehyde module caliberating device and its application method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267544A (en) * | 2017-01-04 | 2018-07-10 | 深圳市普晟传感技术有限公司 | Formaldehyde module caliberating device and its application method |
| CN108267544B (en) * | 2017-01-04 | 2024-01-26 | 深圳市普晟传感技术有限公司 | Formaldehyde module calibration method and using device thereof |
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