Online oxygen content analyzer
Brief description:
When the online oxygen content analyzer is running at high speed, static sparks will be generated. If the material inside contains flammable and volatile gases such as alcohols, benzene, esters, etc., there will be a safety hazard of explosion.
Product features:
1.Online oxygen content analyzer manufacturer customized pretreatment: backflush, acid-base neutralization, organic matter removal, water removal, cooling, drying, voltage stabilization, constant current, etc. of sample gas;
2.Safety: When the oxygen concentration value exceeds the first-level preset alarm value, the electromagnetic adjustment and nitrogen replacement are automatically turned on until the value drops to a safe range; when it exceeds the second-level preset alarm value, the power supply is automatically cut off to stop the centrifuge;
3.Applicable explosion-proof area: intrinsically safe explosion-proof composite instrument, which meets the requirements of strict use areas;
4.Nitrogen flow control: equipped with a nitrogen control box, which automatically cuts off the large flow of nitrogen when the oxygen concentration value is within the safe range to achieve a small flow of continuous supply to meet the micro-positive pressure in the centrifuge;
5.Module platform: The pretreatment level and function can be freely adjusted according to the actual use situation, and the adaptability is wider;
6.Easy maintenance: one-button calibration/calibration, tool-free disassembly and maintenance, hot-swap replacement of sensor components;
7.Intelligent display: self-luminous OLED display screen, wide multi-angle observation;
Technical parameters of oxygen content analyzer manufacturer:
| Model |
XMB-YW-200 |
| Measurement range |
0~25%VOL |
| Detection principle |
fluorescence quenching |
| electrochemical detection accuracy |
0.1%VOL |
| explosion-proof grade |
ExdibIICT6Gb |
| protection grade |
IP67 |
| response time |
T90<20S |
| signal output |
4-20mA, RS485, HART protocol switch output:4 groups (2 groups for use and 2 groups for standby) rated voltage:DC24V signal acquisition:16-bit ADC digital-to-analog conversion |
Technical parameters of reactor oxygen content analyzer:
| Ambient temperature |
-10ºC~40ºC |
| Range switching |
PPm-VOL free conversion Pre-processing level: customized |
| Main body material |
316L/304/PTFE Box material: 304 stainless steel brushed |
| Appearance size |
770*650*250mm |
| Other functions |
anti-interference, anti-isolation, anti-lightning, tool-free disassembly and maintenance, one-key calibration/calibration, hot-swap replacement of sensors, 24V anti-reverse connection. |
Online oxygen content analyzer is a widely used equipment, widely used in chemical, metallurgical, environmental protection and other industries. Due to long-term use or other reasons, the instrument adjustment may deviate, so it needs to be calibrated in practical applications. This article will focus on the calibration method of the online oxygen content analyzer.
1. Preparation before calibration of the online oxygen content analyzer
Prepare calibration gas: The calibration gas should be the same as the sample gas to be measured, usually a mixture of nitrogen and air, and oxygen with a mass fraction of 5% can be used. The calibration gas needs to be precisely calibrated and stabilized to ensure high concentration accuracy and stability.
Prepare standard electrolyte solution: The standard electrolyte solution needs to use chemicals with high purity and precise concentration to ensure the reliability of the calibration results.
Instrument operation status: Before calibrating the online oxygen content analyzer, the operating status of the instrument needs to be checked. Confirm that all components have been fully installed, whether the power supply is normal, whether the instrument is connected to the gas supply, whether the sensor is in an empty state, etc.
2. Zero point calibration method of online oxygen content analyzer
Before performing zero point calibration of the online oxygen content analyzer, the sensor needs to be placed in a pure nitrogen environment. The specific steps are as follows:
Connect the calibration gas to the sensor and place the sensor in pure nitrogen.
Turn on the instrument power and start the program. After the gas stabilizes, check whether the instrument reading is zero.
If the reading is not zero, it needs to be corrected. The specific method is to adjust the instrument according to the instrument manual and inspection records, and according to the method provided by the manufacturer, so that the reading reaches zero. If you cannot adjust it yourself, you need to contact the manufacturer or after-sales service agency for repair.
After the adjustment, check again whether the reading is zero. If the measured value is still wrong, you need to re-calibrate the zero point.
3. Full-scale calibration method of online oxygen content analyzer
The full-scale calibration of the online oxygen content analyzer is used to check whether the instrument measurement range is normal and ensure that the instrument can accurately measure the target parameter. This calibration test requires the use of a standard electrolyte solution. The specific steps are as follows:
Introduce the standard electrolyte solution into the target parameter channel of the instrument and wait for its foam to disappear.
Start the instrument power and enter the instrument operation interface. Select the corresponding calibration option, enter the initial concentration value of the standard electrolyte solution, and start measuring.
After the measurement is completed, check the difference between the actual measured value and the target value on the operation interface. If there is a difference, the instrument reading needs to be adjusted.
The adjustment method is to adjust according to the inspection records and instrument manual and the method provided by the manufacturer. The adjustment method may include modifying parameters, replacing parts, recalibrating, etc.
After completing the adjustment, test again to ensure that the concentration of the standard electrolyte solution is close to the measured value.
4.Matters needing attention after the calibration of the online oxygen content analyzer
Record the calibration process: When the online oxygen content analyzer is calibrated, all operation steps and calibration results need to be recorded for future use and inquiry.
Regularly repeat calibration: After long-term use, the accuracy of the online oxygen content analyzer may decrease, so it is necessary to repeat the calibration regularly to ensure the accuracy of the instrument's measurement results.
Maintenance: The instrument should be kept clean and dry during use, and regular inspection and maintenance should be performed, and damaged parts should be replaced and contaminated parts should be cleaned in time.
In short, the calibration of the online oxygen content analyzer is an important step to ensure the precision and accuracy of the instrument. Before calibrating the online oxygen content analyzer, it is necessary to prepare the equipment, select appropriate calibration gas and electrolyte solution, and calibrate according to the instrument manual. After calibration, relevant records, maintenance and care work are also required to ensure the normal operation and long-term use of the instrument.
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