These core parameters are the top priority of the gas analyzer model except for price!

　　The gas analyzer is widely used in industrial sites, with the main function being to monitor the concentration of gases in the process, such as common hydrogen, oxygen, nitrogen, etc., and what are the specialized terms of the gas analyzer? The next NOC instrument gives you a detailed description of the terminology of the gas analyzer. These core parameters are the top priority of the gas analyzer model except for price!

　　Formats of use: are generally portable, online, according to the form in which the instrument is used. Portable by name can be removed, the instrument is simple and easy to use, and the instrument is self-enabled to charge batteries. The cleanness of gas drying does not require pre-treatment, such as the use of portable devices for inspection, sampling, etc., which is generally used in simpler conditions.

　　An on-line gas analyzer: a gas analyzer that connects the source gas through a gas pipeline, by continuous power supply, automatically gives the output signal on a long-term and continuous basis, with an output signal or reading of one or more components of a single or mixed gas.

　　Gas analysis systems: A combination of online gas analyzers that reasonably match sample pre-treatment systems, complex systems that can be continuously coordinated over time. At least one on-line gas analyzer and a sample pre-treatment system. In practical applications, the gas analysis package typically consists of an automated sampling control and human dialogue module, pre-processing unit, analysis unit, marking unit, etc., and a complete online analysis monitoring system, depending on the degree of complexity of the industry. When the gas analyzer is selected, the core focus is on the parameters of the instrument, in addition to the form used, which is the top priority in the selection.

Measuring Range ： The upper and lower limits of the oxygen analyzer range. ， If the trace oxygen analyzer's normal range is 0—10/100/1000ppm； The constant oxygen analyzer's normal range is 0.000%～99.999%

　　Resolution: i.e. the gas analyzer can effectively identify the minimum values; the minimum values for changes in measured gas concentrations that can be identified by the instrument

　　Sensitivity: is the ability of the instrument to react to a measured change by analysing the change in the signal at the level or concentration of the measured substance in a unit. The smallest juedui variation can be measured. The higher the resolution, the lower the sensitivity.

　　Accuracy: i.e. the proximity of the measured value to the true value, which typically consists of two concepts: "precision density" and "precision/sureness "

　　Precision: The degree to which the data sizes of the measurements are close to each other in the conduct of a measure is a reflection of an accidental error.

　　Accuracy/ certainty: The measurement data are concentrated near the real value. Generally, increasing the accuracy of the instrument requires sufficient resolution to ensure it, but the higher the resolution, the higher the accuracy.

　　Repeatability: also referred to as duplicate error, which refers to deviations between a series of results measured using the same method, the same sample and under the same conditions. The same conditions refer to the same operator, the same instrument, the same laboratory and the short time interval. Repeated errors are expressed in the test standard deviations, which mean the same precision as measured. For example, the repetition is 1% F.S., 100 continuous tests, and the difference between the most da reading and the lowest reading is 1%.

　　Stability: i.e., the input remains unchanged under specified conditions, and the analytical instrument values remain constant at specified intervals. Stability is usually evaluated by technical indicator "floating".

　　Drift: The analyzer displays changes in a given concentration during the specified time interval under working conditions. The interval of drift is selected in 15min, 1h, 7h, 24h, 7d, 30d, 3months, 6monts.

　　Zero drift: The analyzer tested zero gas, and the zero sign value changed gradually during the defined time interval.

　　Range drift: also referred to as terminal drift, a shift determined by a step-by-step change in the range of time.

　　Noise: also referred to as output fluctuations, which are not caused by changes in measured group concentrations or in any impact amount relative to average output, or by random fluctuations in output signals caused by unknown incidental factors. It interferes with the detection of useful signals. The noise generated at the zero content (concentration) is referred to as baseline noise, which makes the detection limit variable. Noise shows the impact of random errors.

　　Response time: Common T90, which refers to the response time when the analyzer's indicator is activated to a stabilization value of 90%, which generally is as short as possible, indicating the speed of the response

　　Linear error: The highest da value of the difference between the actual reading of the analyzer and the reading obtained by the linear function measured. The gas analyzer detects the conformity of the gas concentration response curve with the straight line. The response of the gas sensor itself is not necessarily linear, but the readings shown are linear through processing within the instrument's internal procedures. In practice, linear errors and basic errors in gas analyzers (obsolete technical concepts) can easily be confused, and there are many similarities between the two tests. The basic error indicator for the analyzer is no longer in use and, in fact, linear error includes uncertainty (in error) of the standard gas used, which is a potential technical difficulty, especially in measuring trace oxygen. In the current technical standards, linear error has become the de facto underlying error of the analyzer, as it is used to define and define other technical indicators or impact errors.

　　Baseline error: The difference between the gas analyzer measure and the standard gas agreement is the error of the analyzer, the uncertainty of the standard gas is ignored or is combined in the error of the analyzer. The ratio of the analyzer to the specified agreed value is referred to as a baseline error or a fundamental error, such as " few per cent of the % of the scale " .

　　Preheating time: When the analyzer turns on, he/she obtains a stable reading and the error is within the specified time interval.

　　(b) Group: one or more components of the gas analyzer to be measured by its content.

　　Interference components: Background components that cause interference errors from the online gas analyzer, which are similar or similar to the characteristics of the detector.