преобразователь для оптоволоконных микродатчиков кислорода
https://www.sintrol.fi/images/Esitteet/110325_SP-OxMic-11-01...
http://masters.donntu.org/2011/fkita/moschenskiy/library/art...
https://www.presens.de/products/detail/oxy-4-micro.html

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Note added at 22 hrs (2017-04-26 06:52:10 GMT)
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Formal definitions from http://www.electropedia.org/
Electropedia: The World's Online Electrotechnical Vocabulary (IEC60050)

sensor (measuring element)
part of a measuring instrument, or measuring chain, which is directly affected by the measurand and which generates a signal related to the value of the measurand.

(signal) transducer
device for transforming a physical quantity representing information into a physical quantity of different kind representing the same information, one of the two quantities being electric

(measuring) transmitter
measuring transducer the output variable of which is a standardized signal

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Note added at 23 hrs (2017-04-26 07:34:37 GMT)
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Полная демократия в терминообразовании
МЭК 60770-1:1999 Датчики для использования в системах управления производственными процессами. Часть 1. Методы оценки рабочих характеристик (IEC 60770-1:1999, Transmitters for use in industrial-process control systems - Part 1: Methods for performance evaluation)

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Note added at 23 hrs (2017-04-26 07:44:21 GMT)
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http://www.oemoptic.ru/sensorsoptions.php

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Note added at 1 day21 mins (2017-04-26 08:24:28 GMT)
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Measurements in the product and headspace

Not only PET or glass bottles but every type of container can be investigated with optical oxygen sensors. Needle-type oxygen microsensors offer many advantages in quality control in non-transparent packaging, including blisters or cans, and for measurements in smallest volumes.

A septum is attached to the packaging to avoid oxygen entering the container when piercing through its wall. This type of optical sensor can be used to determine the oxygen content of headspace and liquid inside the packaging in one measurement. With its fast response time stable measurement values can be obtained within seconds when the sensor enters the headspace. Then it can be pushed into the liquid inside the packaging and again the oxygen content now in the liquid phase is determined in a few seconds.

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Note added at 1 day23 mins (2017-04-26 08:26:13 GMT)
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https://www.healthcarepackaging.com/machinery/inspection/pro...