The blog
A thorough understanding of visa, hydrogen peroxide sensor technology
Sanna Lehtinen
The product manager
Published:
The eleventh month 17, 2018
Industrial manufacturing and process
Industrial measurement
Life science
Webinar: H2O2Biological purification of humidity measurement, the key lies in the relative degree of saturation
Welcome to our 1 hour training, the speaker is visa's industry commissioner Piritta Maunu and Sanna Lehtinen.Piritta and Sanna will be introduced to measure the humidity in the hydrogen peroxide biological purification of several important aspects.This online seminar focuses on the monitoring of vaporizing saturation parameters in the course of hydrogen peroxide, and plays an important role.
PEROXCAP measurements and chemicals to remove and function
HPP270 series probe can measure the minimum level of PPM?
25 ° C under the measuring range of 0-2000 parts per million (PPM) plus or minus 10 PPM or reading plus or minus 5% (the larger value shall prevail).Accuracy specifications for at least 10 PPM.HPP270Series probe (HPP271 and HPP272) does not apply to safety level of PPM measurement.
The probe tolerated condensation?
When the probe environment have H2O2The probe must always be added when electricity.Add electricity, heatingPEROXCAPH sensor, this will allow the condensation2O2Under the condition of performance measurement in the probe and maintain and extend the life of the probe.If you will probe when power exposed to H2O2Sensors may be down and unable to recover.In the worst case, probe placed a day under high temperature, H2O2Near the cooling conditions of high concentration, the probe will completely damaged.Please refer to "work environment"HPP270 series of product specifications.
The probe can measure liquid H2O2?
No, HPP270 series probe is used only for vaporizing hydrogen peroxide measurements.
The probe can measure liquid H2O2?
No, HPP270 series probe is used only for vaporizing hydrogen peroxide measurements.
Probe or mixture of acetic acid tolerance peracetic acid?
Vaporizing acetic acid peroxide is a very strong oxidant, so PEROXCAP sensor in the environment will be damaged.
The mixture of silver ion probe tolerance?
Probe used in the mixture of silver ions are not recommended, because silver particles should be porous filter clogging and thus to make the strainerHUMICAP sensorThe gas exchange.
My client in H under vacuum2O2Steam sterilization.We can use the probe in the vacuum?
This probe is not designed for vacuum conditions.
I can under the condition of over-voltage/under-voltage using this probe?
The probe is designed only to be used under normal atmospheric pressure.
Whether can be directly from the relative humidity sensor and relative saturation?
Relative humidity can be directly measured, the relative degree of saturation is obtained by calculation.(in theThis online seminarGet to know about more information about these values.
Relative humidity can be directly measured, the relative degree of saturation is obtained by calculation.(in theThis online seminarGet to know about more information about these values.
HPP271 and HPP272 output which parameters?
HPP272 output H2O2Concentration (PPM), temperature and humidity (relative saturation and relative humidity),HPP271 output H2O2PPM (by volume) and H2O the PPM (by volume).
HPP272 output H2O2Concentration (PPM), temperature and humidity (relative saturation and relative humidity),HPP271 output H2O2PPM (by volume) and H2O the PPM (by volume).
Why absolute hydrogen peroxide after the unit is mg/m rather than mg/L?
We choose the international system of units (SI) mg/m3, mg/L not SI units.
I how to convert mg/L to mg/m after?
Can use the following formula will absolutely H2O2Mg/m3(mg per cubic meter) converted to mg/L (mg/L) :
Can use the following formula will absolutely H2O2Mg/m3(mg per cubic meter) converted to mg/L (mg/L) :
Why HPP271 only output H2O2PPM without output relative humidity and relative saturation?
Contains a has two composite HPP271 sensorsHUMICAP sensorthePEROXCAP sensor.Heats PEROXCAP sensors to provide stability in high condensation environment, accurate and repeatable measurements.Relative humidity and the parameters of the relative saturation is related to temperature.Because the heat sensor, if must carry on the accurate temperature measurement, you need to have an additional temperature sensor.And HPP271 don't have the additional temperature sensors.
Contains a has two composite HPP271 sensorsHUMICAP sensorthePEROXCAP sensor.Heats PEROXCAP sensors to provide stability in high condensation environment, accurate and repeatable measurements.Relative humidity and the parameters of the relative saturation is related to temperature.Because the heat sensor, if must carry on the accurate temperature measurement, you need to have an additional temperature sensor.And HPP271 don't have the additional temperature sensors.
How to calculate HPP272 PPM H2O - the "wet" or "dry" value based on?
H.2O PPM calculation based on the "wet" value.
H.2O PPM calculation based on the "wet" value.
What kind of sensor has heating function?
Plus electric PEROXCAP sensor was heating (heating only filter sensor chip under the cap, not heated probe itself).This can prevent condensation appears on the sensor, even in the environment of the humidity near saturation can provide reliable measurements.Heating can also help keep the measurement performance and extend the life of the probe.Periodically removed by chemical heat sensor function.Heating results in a rapid absorption of chemical pollutants in the polymer.Such chemical removal function in internal clean the sensor, improve its stability and accuracy.Here is more information about this feature...
Connecting HPP272 probe on the Indigo200 series screen shows which parameters?
Display the default display H2O2PPM, relative degree of saturation and temperature.For the first time to connect to the Indigo201,Indigo201The analog output of 1 and 2 the HPP272 simulation output.Later, the user can change the analog output and display Settings.Even if you remove the probe and reconnect it, this information will be retained.Please note that during startup head 8.5 minutes, and only show the temperature value.
Display the default display H2O2PPM, relative degree of saturation and temperature.For the first time to connect to the Indigo201,Indigo201The analog output of 1 and 2 the HPP272 simulation output.Later, the user can change the analog output and display Settings.Even if you remove the probe and reconnect it, this information will be retained.Please note that during startup head 8.5 minutes, and only show the temperature value.
What are the chemicals to remove?
During the chemicals to remove by forcing current through sensor temperature components, rapid heating sensors.Rapid heating results in a absorption of chemical pollutants in the polymer comes out.Such chemicals to remove clean the sensor function, improve the stability and accuracy.Complete a chemical removal cycle takes a few minutes, including heating and equilibrium phase.When the temperature of the sensor to stabilize for clean up before conditions, sensors continue to work in a normal measurement mode.During the chemicals to remove lock the value of the transmitter output.
When performing chemicals to remove?
In setting the probe to start and interval automatic clearance (clearance).Default chemical removal interval for 24 hours, you can use the visa Insight software, Modbus or Indigo200 transmitter the value configured for 1 hour to any value between 1 week.However, if you have H2O2Or relative humidity is not stable, the chemicals to remove is delayed for 30 minutes.
In setting the probe to start and interval automatic clearance (clearance).Default chemical removal interval for 24 hours, you can use the visa Insight software, Modbus or Indigo200 transmitter the value configured for 1 hour to any value between 1 week.However, if you have H2O2Or relative humidity is not stable, the chemicals to remove is delayed for 30 minutes.
You can also use the Modbus (digital mode) or M12 connector pins # 5 (simulation mode) manually triggered cleared.Every time trigger removal, is set according to the value of the delayed clearance interval.
Can I disable during startup or biological purification chemicals to remove?
Can't, chemicals to remove in the harsh H2O2Environment to maintain long-term performance and accuracy of probe is indispensable.In probe startup chemical removal will be necessary to maintain the stability of the sensor.During the period of clear, can't be H2O2And H2O measure.
Can't, chemicals to remove in the harsh H2O2Environment to maintain long-term performance and accuracy of probe is indispensable.In probe startup chemical removal will be necessary to maintain the stability of the sensor.During the period of clear, can't be H2O2And H2O measure.
How long does a chemical cleaning advice?
Perform the frequency of the clearing process is not important, it is important to probe in the H2O2Under the environment of how long.Suggestions after add electricity at least once every 24 hours to clear, even if the probe is not continuous exposure to the H2O2In the.If you use the removal of the trigger, we suggest that only implement the clear before implementation biological purification process.
Please note that about 9 minutes after the clearing time back to accurate readings.Max clearance interval for a week.Need to perform chemical substance to maintain the stability of measurement, if you do not perform chemical removal, measuring drift will happen.
What can be measured during the chemicals to remove?
During the period of clear, can only measure temperature (HPP272).During the interval and manually triggered clear, before starting the removal would freeze value output, show only the last measured value.
If I can perform on-site calibration and adjustment?
You can useThe Insight of computer software(Insight 1.0.1.107 or higher) in H2O2Steam direct calibration and adjustment in the probe.Please note that in H2O2Steam in the calibration is very complicated, it must use another d Sarah HPP270 series probe as a reference instrument and successfully create consistent for reference probe and to adjust the probe measurement conditions can reliably perform the school program.You can use the RH calibration instrument (for exampleHMK15) or use the Insight of computer software (Insight 1.0.1.107 or higher) to perform on-site calibration and adjustment.
How do we use RH adjust H2O2Measurement?
PEROXCAP sensor contains is used to calculate H2O2Measurements of two HUMICAP humidity sensor.Because H2O2Calculation based on humidity measurements, you can use the humidity reference basis to adjust the humidity measurement.To improve the accuracy of humidity measurement can also improve the derivative of the H2O2The accuracy of measurement.
