SU602795A1 - Method of matching resistance thermometer with automatic bridge - Google Patents

Method of matching resistance thermometer with automatic bridge

Info

Publication number
SU602795A1
SU602795A1 SU752192934A SU2192934A SU602795A1 SU 602795 A1 SU602795 A1 SU 602795A1 SU 752192934 A SU752192934 A SU 752192934A SU 2192934 A SU2192934 A SU 2192934A SU 602795 A1 SU602795 A1 SU 602795A1
Authority
SU
USSR - Soviet Union
Prior art keywords
resistance thermometer
automatic bridge
resistance
matching resistance
thermometer
Prior art date
Application number
SU752192934A
Other languages
Russian (ru)
Inventor
Георгий Афанасьевич Лущаев
Евгений Иванович Фандеев
Владимир Алексеевич Карчков
Original Assignee
Предприятие П/Я В-2015
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я В-2015 filed Critical Предприятие П/Я В-2015
Priority to SU752192934A priority Critical patent/SU602795A1/en
Application granted granted Critical
Publication of SU602795A1 publication Critical patent/SU602795A1/en

Links

Description

Изобретеш1е относитс  к области термометрии и позвол ет осуществл ть комплектование электронных автоматических мостов со стандартной градуировкой термометрами сопротивлени , изготовленными из серийных полупровошшковых терморезисторов .The invention relates to the field of thermometry and allows the acquisition of electronic automatic bridges with standard graduation with resistance thermometers made from serial semi-wired thermistors.

Известен способ согласовани  термометра сопротивлени  с автоматическим мостом, заключаюиишс  в подключении к термометру сопротивлеш1Я и1унтирующего, добавочного и согласующего резисторов 1.A known method of matching a resistance thermometer with an automatic bridge involves enclosing resistors 1 and 1 for connecting, auxiliary and matching resistors 1 to a thermometer.

Однако известный способ обладает р дом недостатков , заключающихс  в том, что оьш не обеспечивают требуемой точности измерени  из-за большого разброса паспортных зиачегасн параметровHowever, the known method has a number of disadvantages, which consist in the fact that this does not provide the required accuracy of measurement due to the large scatter of passport parameters.

чувствительных элементов термометров сопротивлени , кроме того, погрешность измерени  увеличиваетс  из-за того, что не учит111ваетс  изменение во времени в сопротивлении чувствительного элемента и не обеспечиваетс  взаимозамен емость термометров сопротивлени .sensitive elements of resistance thermometers, in addition, the measurement error increases due to the fact that a change in time in the resistance of the sensitive element is not taken into account and interchangeability of resistance thermometers is not ensured.

Наиболее близким по технической су1Д1Юсти к данному предложению  вл етс  способ согласовани  термометра сопротивлени  с автоматическим мостом, заключающийс  в подключении к термометThe closest in technical terms to this proposal is a method of matching a resistance thermometer with an automatic bridge, which consists in connecting to a thermometer

ру шунтирующего, добавочного и согласующего резисторов и последующего сличени  показаний автоматического моста с температурой контролируемой среды 2.a shunt, additional and matching resistors and the subsequent comparison of the readings of the automatic bridge with the temperature of the controlled medium 2.

Однако извест№ й способ рблалдет недостаточной точностью измерени  из-за погрешности, обусловленной разбросом паспортных значений параметров чувствительных элементов термометра, и нестабильностью параметров в процессе работы.However, the known method of measurement is due to insufficient measurement accuracy due to the error caused by the spread of the passport values of the parameters of the sensitive elements of the thermometer, and the instability of the parameters during operation.

Целью изобретени   вл етс  повышение точности измерени , Ш1  чего по предлагаемому способу первоначально устанавливают бесконечно большую величину сопротивлени  шунтирующего резистора н равную пулю величину сопротивлени  добавочного резистора, затем погружают термометр в среду со средней контролируемой температурой и измен ют сопротивление согласующего резистора до величины, при которой указатель моста совмещаетс  с серединой 1шсалы, после чего устанавливают минимальное значение температуры контролируемой среды и измен ют сопротивление шунтирующего резистора до величины, при которой указатель моста совмещаетс  с началом шкалы, наконед устанавливают максимальное значение темThe aim of the invention is to improve the measurement accuracy, G1 of which, according to the proposed method, an infinitely large resistance value of the shunt resistor is set to the bullet resistance value of the additional resistor, then the thermometer is immersed in the medium with an average controlled temperature and the resistance of the matching resistor is changed to the value at which the pointer the bridge is combined with the middle 1schsala, after which the minimum temperature of the controlled medium is set and the resistance of the shunt resistor to the value at which the bridge pointer coincides with the beginning of the scale, the tip sets the maximum value

SU752192934A 1975-11-21 1975-11-21 Method of matching resistance thermometer with automatic bridge SU602795A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU752192934A SU602795A1 (en) 1975-11-21 1975-11-21 Method of matching resistance thermometer with automatic bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU752192934A SU602795A1 (en) 1975-11-21 1975-11-21 Method of matching resistance thermometer with automatic bridge

Publications (1)

Publication Number Publication Date
SU602795A1 true SU602795A1 (en) 1978-04-15

Family

ID=20638376

Family Applications (1)

Application Number Title Priority Date Filing Date
SU752192934A SU602795A1 (en) 1975-11-21 1975-11-21 Method of matching resistance thermometer with automatic bridge

Country Status (1)

Country Link
SU (1) SU602795A1 (en)

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