CN108956529A - For comparing the portable NH of monitoring3, HCl analysis system - Google Patents
For comparing the portable NH of monitoring3, HCl analysis system Download PDFInfo
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- CN108956529A CN108956529A CN201811173383.7A CN201811173383A CN108956529A CN 108956529 A CN108956529 A CN 108956529A CN 201811173383 A CN201811173383 A CN 201811173383A CN 108956529 A CN108956529 A CN 108956529A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
- G01N2021/396—Type of laser source
- G01N2021/399—Diode laser
Abstract
The invention belongs to gas analysis fields, are related to a kind of for comparing the portable NH of monitoring3, HCl analysis system, including Portable heating sampling probe and heat traced pipeline and portable analysis unit, which is characterized in that the portable NH3, HCl analysis system 220 DEG C of sampling analysis whole process heat tracing, sample temperature degree is more than the acid dew point of tested flue gas；The portable analysis unit further include: control temperature unit, high temperature pretreatment box, oxygen analysis module, NH3, HCl analysis module, data acquisition and control unit, human-computer exchange unit.Analysis system of the present invention is small with interference, speed is fast, high sensitivity, and the high feature of measurement accuracy greatly facilitates on-the-spot testing monitoring.
Description
Technical field
The present invention relates to gas analysis field, in particular to a kind of on-the-spot testing for flue gas of refuse burning CEMS monitors
Portable NH3, HCl analysis system.
Background technique
Environmental protection is fundamental state policy, and there are great demand, the waste incineration in China city in the country to incineration treatment of garbage
Processing ratio is also steadily improving always.However, flue gas of refuse burning is discharged into atmosphere, greatly polluted caused by air.It is right
The key technology that flue gas of refuse burning processing carries out process control is that incineration flue gas processing control is carried out using incineration flue gas CEMS
And the real-time monitoring of discharge.Be to close to provide according to national standards: incineration flue gas CEMS must carry out on-the-spot testing monitoring.Currently,
The NH of incineration flue gas3, HCl Determination method mainly use " the measurement chromatography of ions of air and wasteair hydrogen chloride
HJ549-2016 ", Method And Principle is artificial sample, is absorbed in the waste gas of pollutant of sampling respectively with water or alkaline absorption solution
The sample injection ion chromatograph for forming chloride ion-containing is carried out separation determination by hydrogen chloride；It is detected with electric conductivity detector, according to guarantor
Stay the time qualitative, peak area or peak height are quantitative.
Using chemical method to flue gas CEMS Determination carry out on-the-spot testing monitoring have been unable to meet it is real-time, accurately want
It asks.Real-time Determination is carried out with the method that water or alkaline absorption solution absorbing hydrogen chloride carry out laboratory testing, it is understood that there may be is taken
Sample, analysis and mushing error, can not accurately react flue gas CEMS detection exhaust gas in ammonia, hydrogen chloride concentration；Simultaneously
This method needs one week or so that Determination result could be gone out.
Therefore, existing incineration flue gas CEMS on-the-spot testing detection uses manual sampling and chemical analysis method, Bu Nengman
Sufficient on-the-spot testing testing requirements are badly in need of developing a kind of portable NH that can be used for on-the-spot testing monitoring3, HCl monitoring instrument system,
It is just able to achieve and realizes the detection of flue gas CEMS on-the-spot testing by standard requirements.Relevant national standard has been proposed using comparison monitor
The requirement of device, but micro NH is detected to incineration flue gas CEMS3, HCl still lack the detecting instrument equipment met the requirements of the standard, this hair
Bright proposition it is a kind of for compare monitoring portable NH3, HCl analysis system has the data reliability of CEMS and environmental protection
It is of great importance.
Summary of the invention
In order to solve the deficiency that existing flue gas CEMS compares monitoring technology, the present invention provides one kind to supervise for on-the-spot testing
The portable NH surveyed3, HCl analysis system.
The technical solution adopted by the present invention to solve the technical problems is to be resorted to the comparison monitoring of national Specification
The technical requirements of portable instrument take the sampling analysis technology of 220 DEG C of whole high temperature, including portable high temperature sampling processing
System and the NH of portable high temperature detection3, HCl analysis system technical solution.
The present invention is used to compare the portable NH of monitoring3, HCl analysis system, including Portable heating sampling probe and companion
Hot pipeline and portable analysis unit, which is characterized in that the portable NH3, HCl analysis system sampling analysis whole process heat tracing
220 DEG C, sample temperature degree is more than the acid dew point of tested flue gas；The portable analysis unit further include: control temperature unit, high temperature are pre-
Treatment box, oxygen analysis module, NH3, HCl analysis module, data acquisition and control unit, human-computer exchange unit, in which:
Control temperature unit is mounted in the portable analysis unit, will for incuding the temperature in control portable analysis unit
Sense that temperature is sent to data acquisition and control unit, the temperature tune sent according to the data acquisition received with control unit
Signal is saved, the portable analysis unit is controlled and keeps value corresponding with setting temperature；
High temperature pretreatment box, including flue gas pretreatment component, high temperature fine filter, high temperature samples pump and high temperature restrictor ring are high
Flue gas is extracted and is passed through out high temperature restrictor ring current limliting by warm sampling pump, makes to enter oxygen analysis module, NH3, HCl analysis module flow
It is stable, constant；
Oxygen analysis module is mounted in the high temperature pretreatment box, the oxygen content in flue gas is analyzed, as NH3, HCl monitoring group
Point auxiliary parameter, for by criterion calculation be tested flue gas real-time concentration when, the amendment to oxygen content as defined in flue gas, prevent be
Detection data caused by system leakage is abnormal, and real time data is sent to data acquisition and is used for data calculating with control unit；
NH3, HCl analysis module, be mounted in cellular analytical unit, NH3, HCl analysis module use tunable diode
Laser absorption spectroscopy TDLAS, for NH micro in high accuracy analysis flue gas3, HCl concentration, and real time data is sent to
Man-machine interaction unit；
Data acquisition and control unit, control for temperature and analyze the acquisition of the analog signals of measurement, and send instruction control
Corresponding electrical equipment is made, guarantee is corresponding with the setting value of temperature, and the real time data of acquisition back is sent to man-machine friendship
Mutual unit；
Man-machine interaction unit, the NH for providing to calculate and in the flue gas of real-time display Determination according to standard3, HCl and O2
Concentration；Configuration parameter, temperature parameter and the analysis module calibration of analysis are compared according to standard setting；And can check historical trend,
Real-time display and report output, the temperature parameter include: predetermined temperature value or temperature range, and by the configuration of setting
Parameter and temperature parameter are conveyed to data acquisition and control unit.
Portable high temperature sampling processing system of the invention and high-temperature analysis detection system meet national Specification
The technical requirements of the analysis instrument of Determination；Suitable for incineration flue gas CEMS to NH3, HCl on-the-spot testing monitoring.
At one preferably or in optinal plan, the control temperature unit is used to incude the temperature in control portable analysis unit
Degree, comprising:
Temperature-sensitive module I acquires with the data and is connected with control unit, and the temperature-sensitive module I is for incuding portable analysis
Temperature in unit, and temperature sensor is sent to data acquisition and control unit；
Heating module I acquires with the data and is connected with control unit, and the heating module I is for referring to receiving heating
After order, to heating in the portable analysis unit and the temperature value sent to the man-machine interaction unit；
Refrigeration module acquires with the data and is connected with control unit, and the refrigeration module is for receiving refrigeration instruction
Afterwards, to refrigeration in the portable analysis unit and the temperature value sent to the man-machine interaction unit.
At one preferably or in optinal plan, the high temperature pretreatment box computer heating control includes: temperature-sensitive in case at 220 DEG C
Module, heating module, high-temperature resistant filter, high temperature resistant sampling pump, high temperature resistant restrictor ring, oxygen analysis module；
Temperature-sensitive module II acquires with the data and is connected with control unit, and the temperature-sensitive module II is for incuding and controlling height
Temperature in warm pretreatment box unit, the set temperature of typical high-temperature processing case and the computer heating control of high-temperature sampling probe are
220 DEG C, and temperature sensor is sent to data acquisition and control unit.
Heating module II acquires with the data and is connected with control unit, and the heating module II is for receiving
After heating instructions, to heating in the high temperature pretreatment box unit and the temperature value sent to the man-machine interaction unit.
At one preferably or in optinal plan, the temperature-sensitive module I, II is thermal resistance or thermocouple, heating module I, II
For heating sheet or heating rod, refrigeration module is semiconductor cooler.
At one preferably or in optinal plan, the high-temperature resistant filter, high temperature resistant sampling pump can be 220 DEG C of heatproof.One
In a preferred or optinal plan, the high temperature resistant restrictor ring uses 1/8, and " stainless steel spiral coil pipe passes through and adjusts high temperature resistant current limliting
The length of ring makes current limliting meet setting requirement.
At one preferably or in optinal plan, the oxygen analysis module is zirconium oxide oxygen analyte sensors, for surveying cigarette
Gas oxygen content.
At one preferably or in optinal plan, the Portable heating sampling probe has system calibrating mouth, for portable
Formula NH3, HCl analysis system compare monitoring when be passed through standard gas calibration, comply with standard as defined in compare monitoring instrument calibration
It is required that.
At one preferably or in optinal plan, NH3, HCl analysis module absorbs light using tunable diode laser
The heating temperature of spectrometry TDLAS, measurement gas chamber are maintained at 220 DEG C, and the measurement accuracy of laser analysis module reaches ± 1%FS, symbol
The required precision of on-the-spot testing detecting instrument as defined in standardization.
The present invention it is beneficial the result is that: portable NH3, HCl analysis system the whole 220 DEG C of heat tracings of pipeline, and by adopting
With NH in adjustable secondary pipe laser spectrometry (TDLAS) analysis flue gas3, HCl concentration, TDLAS, which has, interferes that small, speed is fast, spirit
The characteristics of sensitivity is high, and measurement accuracy reaches ± 1%FS.According to pollution sources automated monitor and compare monitoring technology regulation, monitoring
Before, the flue gas analyzer that reference method uses live must use calibrating gas to check accuracy, and record field-checking value, just
The system calibrating mouth for taking sampling probe facilitates the accuracy detection of instrument, while man-machine interaction unit records measurement data in real time
Facilitate enquiry of historical data, in addition it can print minute report and provide corresponding report immediately, greatly facilitates live ratio
To monitoring.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the portable NH of the embodiment of the present invention3, HCl analysis system attachment structure schematic diagram.
In figure, 1- heating sampling inserting tube, the portable sampling probe of 2-, the portable heat traced pipeline of 3-, 4- portable analysis unit, 5-
High temperature pretreatment box, 6-NH3, HCl analysis module, 7- high-temperature resistant filter, 8- high temperature resistant sampling pump, 9- high temperature resistant restrictor ring,
10- oxygen analysis module, the acquisition of 11- data and control unit, 12- man-machine interaction unit, 13- temperature-sensitive module I, 14- heating module
I, 15- refrigeration module I, 16- temperature-sensitive module II, 17- heating module II, 18- control temperature unit.
Specific embodiment
The present invention is described further with reference to the accompanying drawings and examples.
Embodiment
The portable NH of the embodiment of the present invention3, HCl analysis system it is as shown in Fig. 1, main includes heating sampling inserting tube 1, portable
Sampling probe 2, portable heat traced pipeline 3 and portable analysis unit 4,220 DEG C of the sampling analysis whole process heat tracing of analysis system, sample gas
Temperature is more than the acid dew point of tested flue gas；Portable analysis unit 4 further include: control temperature unit 18, high temperature pretreatment box 5, oxygen
Analysis module 10, NH3, HCl analysis module 6, data acquisition with control unit 11, human-computer exchange unit 12, in which:
The temperature-sensitive module I of control temperature unit 18, heating module I, refrigeration module I are mounted in the portable analysis unit 4, are used
In induction portable analysis unit 4 in temperature, and will sense temperature be sent to data acquisition with control unit 11, and according to
The data acquisition received is maintained at the transmission temperature adjustment signal control of the control unit 11 portable analysis unit 4 and institute
State the corresponding value of setting temperature.
High temperature pretreatment box 5 is mounted in the portable analysis unit 4, including temperature-sensitive module II, heating module II,
High-temperature resistant filter 7, high temperature resistant sampling pump 8, high temperature resistant restrictor ring 9, oxygen analysis module 10, for the fine filtering to flue gas,
And flue gas is extracted out to by high temperature resistant sampling pump 8 and is passed through 9 current limliting of high temperature resistant restrictor ring, guarantee that stable, constant flow enters oxygen
Analysis module 10 and NH3, HCl analysis module 6.
Oxygen analysis module 10 is mounted in the high temperature pretreatment box 5, for analyzing the oxygen content in flue gas, as
NH3, HCl monitor the auxiliary parameter of component, while also preventing data exception caused by system leak, and real time data is sent
To data acquisition and control unit 11.
NH3, HCl analysis module 6, be mounted in portable analysis unit 4, for analyzing NH3, HCl concentration in flue gas,
And real time data is sent to data acquisition and control unit 11.
Data acquisition and control unit 11, mainly there is three road temperature acquisitions, including portable heat traced pipeline 3, portable analysis
Unit 4, high temperature pretreatment box 5, four tunnels control output, including portable heat traced pipeline 3, the heating module I of control temperature unit 18 and system
Cold module I, high temperature pretreatment box 5, high temperature resistant sampling pump 8 guarantee that the value of temperature acquisition is corresponding with the setting value of temperature, concurrently
Normal instructions starting high temperature resistant sampling pump 8 is sent normally to sample.
Man-machine interaction unit 12 is used for real-time display NH3, HCl analysis module 6, the concentration of oxygen analysis module 10, setting matches
Parameter and temperature parameter are set, meter calibration checks historical trend, minute report, and the temperature parameter includes: preset temperature
Angle value or temperature range, and the configuration parameter of setting and temperature parameter are conveyed to data acquisition and control unit 11.
The portable NH of embodiment3, HCl analysis system, the temperature-sensitive module I of control temperature unit 18 and data acquisition and control
Unit phase 11 processed connects, and temperature-sensitive module I is used to incude the temperature in portable analysis unit 4, and will sense that temperature is sent to
Data acquisition and control unit 11.Heating module I is acquired with the data to be connected with control unit 11, and heating module I is used for
After receiving heating instructions, to heating in the portable analysis unit 4 and the temperature sent to the man-machine interaction unit 12
Angle value.Refrigeration module I is acquired with the data and is connect with control unit phase 11, and refrigeration module I is for receiving refrigeration instruction
Afterwards, to refrigeration in the portable analysis unit 4 and the temperature value sent to the man-machine interaction unit 12
The portable NH of embodiment3, HCl analysis system, the temperature-sensitive module II of high temperature pretreatment box 5, with the data acquisition with
Control unit 11 is connected, and temperature-sensitive module II is used to incude in high temperature pretreatment box 5 temperature, and will sense that temperature is sent to
Data acquisition and control unit 11.Heating module II acquires with the data and is connected with control unit 11, and heating module II is used
In the temperature after receiving heating instructions, sent to heating in the high temperature pretreatment box 5 and the extremely man-machine interaction unit 12
Angle value.
In embodiment, above-mentioned temperature-sensitive module I, II is generally thermal resistance or thermocouple, and heating module I, II is typically
Heating sheet or heating rod, refrigeration module I are semiconductor cooler.
In the high temperature pretreatment box 5 of embodiment, gas passes through high-temperature resistant filter 7, is passed through flue gas by high temperature resistant sampling pump 8
9 current limliting of high temperature resistant restrictor ring is crossed, the flue gas of certain flow is sent into oxygen analysis module 10 and NH3, in HCl analysis module 6.Resistance to height
Warm filter, high temperature resistant aspiration pump, can be 220 DEG C of heatproof.The high temperature restrictor ring is that 1/8 " stainless steel spiral coil pipe passes through adjusting
The length of high temperature resistant restrictor ring makes current limliting meet setting requirement, 1 meter of embodiment length, rate of discharge is controlled in 180L/
h。
In embodiment, oxygen analysis module 10 is zirconia sensor, measurement range 0-25%, measurement accuracy ± 1%FS.
In embodiment, heating sampling inserting tube 1, portable sampling probe 2, portable heat traced pipeline 3 heating temperature be 220 DEG C,
Heating samples 1 filter core of stainless steel containing 25um of inserting tube, and the dust in primary filtration flue gas carries out two using portable sampling probe 2
Grade filtering, filter core is 10 microns of stainless steel filter cores, and portable sampling probe 2 has system calibrating mouth, can be to NH3, HCl component
Total system calibration.Portable heat traced pipeline 3 uses 3 meters of length, and 6mmPFA pipe, every meter of 100 watts of series connection heater strips guarantee the equal of temperature
It is even, reduce NH3, HCl absorption.
In embodiment, NH3, HCl analysis module 6, using adjustable secondary pipe Laser absorption spectroscopy (TDLAS) principle point
Analysis, there's almost no the cross sensitivity problem with other gases, and the heating temperature of measurement gas chamber is maintained at 220 DEG C, guarantees cigarette
It is blocked caused by gas is undistorted and gas crystallizes；The measurement accuracy of laser analysis module reaches ± 1%FS, complies with standard regulation
On-the-spot testing detecting instrument required precision.
Claims (10)
1. a kind of for comparing the portable NH of monitoring3, HCl analysis system, including Portable heating sampling probe and heat traced pipeline
With portable analysis unit, which is characterized in that the portable NH3, HCl analysis system 220 DEG C of sampling analysis whole process heat tracing,
Sample temperature degree is more than the acid dew point of tested flue gas；The portable analysis unit further include: control temperature unit, high temperature pretreatment
Case, oxygen analysis module, NH3, HCl analysis module, data acquisition and control unit, human-computer exchange unit, in which:
Control temperature unit is mounted in the portable analysis unit, will for incuding the temperature in control portable analysis unit
Sense that temperature is sent to data acquisition and control unit, the temperature tune sent according to the data acquisition received with control unit
Signal is saved, the portable analysis unit is controlled and keeps value corresponding with setting temperature；
High temperature pretreatment box, including flue gas pretreatment component, high temperature fine filter, high temperature samples pump and high temperature restrictor ring are high
Flue gas is extracted and is passed through out high temperature restrictor ring current limliting by warm sampling pump, makes to enter oxygen analysis module, NH3, HCl analysis module flow
It is stable, constant；
Oxygen analysis module is mounted in the high temperature pretreatment box, the oxygen content in flue gas is analyzed, as NH3, HCl monitor component
Auxiliary parameter, for by criterion calculation be tested flue gas real-time concentration when, the amendment to oxygen content as defined in flue gas, anti-locking system
Detection data caused by leakage is abnormal, and real time data is sent to data acquisition and is used for data calculating with control unit；
NH3, HCl analysis module, be mounted in portable analysis unit, NH3, HCl analysis module use tunable diode laser
Absorption spectrometry TDLAS, for NH micro in high accuracy analysis flue gas3, HCl concentration, and real time data is sent to man-machine
Interactive unit；
Data acquisition and control unit, control for temperature and analyze the acquisition of the analog signals of measurement, and send instruction control
Corresponding electrical equipment is made, guarantee is corresponding with the setting value of temperature, and the real time data of acquisition back is sent to man-machine friendship
Mutual unit；
Man-machine interaction unit, the NH for providing to calculate and in the flue gas of real-time display Determination according to standard3, HCl and O2It is dense
Degree；Configuration parameter, temperature parameter and the analysis module calibration of analysis are compared according to standard setting；And it can check historical trend, reality
When display and report output, the temperature parameter include: predetermined temperature value or temperature range, and the configuration of setting is joined
Several and temperature parameter is conveyed to data acquisition and control unit.
2. according to claim 1 for comparing the portable NH of monitoring3, HCl analysis system, which is characterized in that it is described
Control temperature unit is used to incude the temperature in control portable analysis unit, comprising:
Temperature-sensitive module I acquires with the data and is connected with control unit, and the temperature-sensitive module I is for incuding portable analysis
Temperature in unit, and temperature sensor is sent to data acquisition and control unit；
Heating module I acquires with the data and is connected with control unit, and the heating module I is for referring to receiving heating
After order, to heating in the portable analysis unit and the temperature value sent to the man-machine interaction unit；
Refrigeration module acquires with the data and is connected with control unit, and the refrigeration module is for receiving refrigeration instruction
Afterwards, to refrigeration in the portable analysis unit and the temperature value sent to the man-machine interaction unit.
3. according to claim 1 for comparing the portable NH of monitoring3, HCl analysis system, which is characterized in that it is described
High temperature pretreatment box computer heating control includes: that temperature-sensitive module, heating module, high-temperature resistant filter, high temperature resistant are adopted in case at 220 DEG C
Sample pump, high temperature resistant restrictor ring, oxygen analysis module；
Temperature-sensitive module II acquires with the data and is connected with control unit, and the temperature-sensitive module II is for incuding and controlling height
Temperature in warm pretreatment box unit, the set temperature of typical high-temperature processing case and the computer heating control of high-temperature sampling probe are
220 DEG C, and temperature sensor is sent to data acquisition and control unit；
Heating module II acquires with the data and is connected with control unit, and the heating module II is used to receive heating
After instruction, to heating in the high temperature pretreatment box unit and the temperature value sent to the man-machine interaction unit.
4. according to claim 2 for comparing the portable NH of monitoring3, HCl analysis system, which is characterized in that it is described
Temperature-sensitive module I is thermal resistance or thermocouple, and heating module I is heating sheet or heating rod, and refrigeration module is semiconductor cooler.
5. according to claim 3 for comparing the portable NH of monitoring3, HCl analysis system, which is characterized in that it is described
Temperature-sensitive module II is thermal resistance or thermocouple, and heating module II is heating sheet or heating rod.
6. according to claim 3 for comparing the portable NH of monitoring3, HCl analysis system, which is characterized in that it is described
High-temperature resistant filter, high temperature resistant sampling pump can be 220 DEG C of heatproof.
7. according to claim 3 for comparing the portable NH of monitoring3, HCl analysis system, which is characterized in that it is described
High temperature resistant restrictor ring uses 1/8, and " stainless steel spiral coil pipe makes current limliting meet setting by adjusting the length of high temperature resistant restrictor ring
Requirement.
8. according to claim 3 for comparing the portable NH of monitoring3, HCl analysis system, which is characterized in that it is described
Oxygen analysis module is zirconium oxide oxygen analyte sensors, for surveying flue gas oxygen content.
9. according to claim 1 for comparing the portable NH of monitoring3, HCl analysis system, which is characterized in that it is portable
Formula heats sampling probe and has system calibrating mouth, is used for portable NH3, HCl analysis system compare monitoring when be passed through standard gas mark
It is fixed, it complies with standard defined to the calibration request for comparing monitoring instrument.
10. according to claim 1 for comparing the portable NH of monitoring3, HCl analysis system, which is characterized in that
NH3, HCl analysis module, using tunable diode laser absorption spectroscopy method TDLAS, the heating temperature for measuring gas chamber is kept
At 220 DEG C, the measurement accuracy of laser analysis module reaches ± 1%FS, complies with standard the precision of defined on-the-spot testing detecting instrument
It is required that.
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|---|---|---|---|
| CN201811173383.7A CN108956529A (en) | 2018-10-09 | 2018-10-09 | For comparing the portable NH of monitoring3, HCl analysis system |
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| CN110907394A (en) * | 2019-12-02 | 2020-03-24 | 光钙(上海)高科技有限公司 | Heat tracing extraction type TDLAS gas analysis system and method |
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