gas detectorGenerally, calibration is required once a year, and even calibration is even once every six months or three months if there are strict requirements for the accuracy of the testing instrument. The more calibration times, the less likely the detector drifts, and the better the detection effect.
ingas detectorIn the calibration, the instrument can be calibrated with zero gas and standard gas. The instrument will store the standard curves obtained. When the gas detector operates in the environment under test, the instrument compares the signal generated by the concentration of the gas being measured with the standard curve stored at the time of calibration to calculate the concentration value of the gas being measured.
In order to ensure the accuracy of the instrument's measurements, it is essential to zero the instrument at any time and to calibrate it regularly. It is important to note that while many gas detectors can replace detection sensors, this does not mean that the detector can be equipped with a different detector probe at any time. Whenever the probe is replaced, the gas detector must be recalibrated in addition to the activation time of the sensor. In addition, it is recommended to test standard gases before using various instruments to ensure that the gas detector is truly protective.
If this instrument is used as a safety alarm for open air places, such as open air workshops, the portable diffusion gas detector can be used, as it can continuously, in real time and accurately display the concentration of toxic and harmful gases on site.
The fixed detector is generally a two-part type. The probe consists of a sensor and a transmitter, which is installed in the inspection site as a whole. The secondary instrument consists of a circuit, a power supply and a display alarm device, which is installed in a safe place for easy monitoring.
Instrument calibrationgas detectorThe Detection principle is the same as the previous section, but is better suited for fixing the continuity and long-term stability required for fixed inspections in calibration studios and process cleanliness instrumentation bench technology.gas detectorcalibration is an important means to detect the sensitivity of the instrument and restore the accuracy of the instrument. At the same time, the gas detector's sensor can be judged through testing and calibration. Therefore, it is necessary to calibrate the instrument regularly.
In general, calibration is a very simple and convenient process that only requires two steps:
First, zeroing the instrument in the "air" does not require measured gases.
2. The instrument is calibrated in a standard gas containing a known concentration.
For partners in the security industry, portable detectors must be accurate and reliable, and cannot tolerate the slightest carelessness. Proper and regular calibration and maintenance of the detector is a necessary method, which illustrates the importance of calibration.
In fact, both detector manufacturers and national regulations have calibration regulations, which are usually divided into two categories: equipment manufacturers will require regular calibration, usually once every 2 to 6 months, to ensure that the instrument can work normally and effectively. The manufacturer recommends that the instrument be calibrated by a qualified user, distributor, or authorized service personnel by the manufacturer. Metrology regulations require calibrations to be carried out at least once every 12 months, and this calibration must be carried out in the national metrology department, that is, in a third-party metrology institution.