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From Wikipedia, the free encyclopedia

An analyser (British English) or analyzer (American English; see spelling differences) is a tool used to analyze data. For example, a gas analyzer[1] tool is used to analyze gases. It examines the given data and tries to find patterns and relationships. An analyser can be a piece of hardware or software.

Autoanalysers are machines that perform their work with little human involvement.

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Transcription

they say what we've got here is the sample probe on this side and which is taking sample directly from the track from that sample there and putting a into the ion-selective electrode okay say measures sodium potassium and chloride on the spare the machine here and any person I like also into that dilution turn table at the back it makes a dilution about sample with saline one in five dilution and then it takes up her alley quotes from the dilution turntable and puts players into a sample turntable a you can see the cuvette is moving out sample proctor sample turntable and it then goes through a court overturned to hear participating in the re-agents so the re-agent one pray which is beaver agent in so they actual cuvette that where the analysis takes place after five minutes the sample will be in the right position for the reagent to probe to put sample into the a cuvette again anything goes there mixing so we've got a mic so on and it makes it too here which come out and vibrate backwards and forwards that's been around very quickly and the cuvettes because he got now a that ensures that a sample is mixed effectively and and constantly throughout the time at the 10 minutes said that the ass a well-taken the lamp here has a spectrophotometer on the other side inside the ring which will constantly be taking readings absorbance readings behind these can be used to produce the results for the year individual acts like so for example if it was a clear case that's a WiiU produce a calibration care using calibrated as unknown value a and then we would see what the absorbance rating was at the end effects a 10 minutes for the patient sample put it back into the calibration cuvette to produce a result in many moles per liter and after each give its use that the end is 10 minutes is washed ray carefully save this is a wash station which is cleaning key events they get an acid and alkaline wash and then the a wall to watch and then there who've it out very carefully so that the cue that is clean and dry before it's used again and i actually shines a light through that key that to check that it's cleaned well

Operation

Analysis can be done directly on samples or the analyser can process data acquired from a remote sensor. The source of samples for automatic sampling is commonly some kind of industrial process. Analysers that are connected to a process and conduct automatic sampling, can be called online (or on-line) analysers or sometimes inline (or in-line) analysers. For inline analysis, a sensor can be placed in a process vessel or stream of flowing material. Another method of online analysis is allowing a sample stream to flow from the process equipment into an analyser, sometimes conditioning the sample stream e.g., by reducing pressure or changing the sample temperature. Many analysers are not designed to withstand high pressure. Such sampling is typically for fluids (either liquids or gases). If the sample stream is not substantially modified by the analyser, it can be returned to the process. Otherwise, the sample stream is discarded; for example, if reagents were added.

Pressure can be lowered by a pressure reducing valve. Such valves may be used to control the flow rate[which?] to the online analyser. The temperature of a hot sample may be lowered by use of an online sample cooler. Analysis can be done periodically (for example, every 15 minutes), or continuously. For periodic sampling, valves (or other devices) can be switched open to allow a fluid sample stream to flow to the analyser and shut when not sampling.

Some methods of inline analysis are so simple, such as electrical conductivity or pH, the instruments are usually not even called analysers. Salinity determined from simple online analysis is often determined from a conductivity measurement where the output signal is calibrated in terms of salinity concentration (for example ppm of NaCl). Various types of other analyses can be devised. Physical properties can include electrical conductivity (or effectively electrical resistivity), refractive index, and radioactivity measurement. Simple processes that use inline electrical conductivity determination are water purification processes which test how effectively salts have been removed from the output water. Electrical conductivity variations include cation and anion conductivity. Chromatography such as ion chromatography or HPLC often tests the output stream continuously by measuring electrical conductivity, particularly cation or anion conductivity, refractive index, colorimetry or ultraviolet/visible absorbance at a certain wavelength. InlineOnline and offline analysers are available for other types of analytes. Many of these add reagents to the samples or sample streams.

Types of analysers

References

  1. ^ "Gas Analyzer". Archived from the original on 2016-02-26. Retrieved 2020-03-03.
This page was last edited on 27 April 2023, at 16:19
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