SU445855A1 - Device for measuring temperature differences - Google Patents
Device for measuring temperature differencesInfo
- Publication number
- SU445855A1 SU445855A1 SU1614994A SU1614994A SU445855A1 SU 445855 A1 SU445855 A1 SU 445855A1 SU 1614994 A SU1614994 A SU 1614994A SU 1614994 A SU1614994 A SU 1614994A SU 445855 A1 SU445855 A1 SU 445855A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- measuring
- temperature differences
- measuring temperature
- thermistors
- temperature
- Prior art date
Links
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
1one
Изобретение относитс к технике Teivmeратурных измерений и может быть использовано дл измерени разности температур в любой отрасли промьпнленности.This invention relates to a technique for measuring measurements and can be used to measure temperature differences in any industry.
Известны устройства дл измерени разности температур, содержащие термисторы, источник питани и измерительный прибор.Devices for measuring temperature differences are known, comprising thermistors, a power source and a measuring instrument.
Однако в известных устройстБг1х показани вькодного прибора завис т не только от разности, но и от суммы температур, а также 01 колебаний напр жени в сети.However, in the known device, the readings of the code device depend not only on the difference, but also on the sum of the temperatures, as well as 01 voltage fluctuations in the network.
Целью изобретени вл етс повышение точности измерени разности температур и устранение вли ни колебаний напр жени нита:ни на результат измерени .The aim of the invention is to improve the accuracy of measuring the temperature difference and eliminate the effect of voltage fluctuations on the voltage: not on the measurement result.
Это достигаетс тем, что термисторы включены последовательно с рамками логометра и зашунтированЕ резисторами.This is achieved by the fact that the thermistors are connected in series with the gauge frame and are bounded by resistors.
На чертеже приведена схема устройства. The drawing shows a diagram of the device.
Термисторы Rt и Rt зашунтированыRt and Rt thermistors are shunted
резисторами Я и R 9 подключены кresistors I and R 9 are connected to
измерительному нрибору 1. Питание устройства осущес1Вл етс от источника питани 2measuring device 1. The device is powered from the power source 2
При помещении, например обоих термисторов в одинаковую температуру (,) через рамки логометра V и будутWhen placed, for example, both thermistors at the same temperature (,) through the frame of the V gauge, they will
протекать одинаковые токи, отношение токов равно единице.leak the same currents, the ratio of the currents is equal to one.
При изменении одной из температур, на- нример t , измен етс сопротивление терatWhen one of the temperatures changes, for example, the temperature resistance changes
мистораmistor
-J , а следовательно, и отношение токов через рамки логометра.-J, and hence the ratio of currents through the frame of the gauge.
Это дает возможность проградуировать догометр в значени х разности температур.This makes it possible to calibrate the dogometer in terms of the temperature difference.
Достоинством схемы кроме уменьшени количества термисторов и повышени точности вл ютс простота ее и знакочувствителность .The advantage of the circuit, besides reducing the number of thermistors and increasing the accuracy, is its simplicity and sign sensitivity.
При отношении токов например равном единице, прибор ноказьшает нуль по середине шкалы, при t t 9 указатель прибораWith respect to currents, for example, equal to one, the device knocks down zero in the middle of the scale, at t t 9 the instrument pointer
от шон е-1ч; , например, влево, а приЬ -2 вправо.from Shawn e-1h; , for example, to the left, and PR-2 to the right.
Кроме этого, показани независимы от колебаний напр жени источника питани .In addition, readings are independent of voltage fluctuations of the power source.
33
о е т еabout e
3 о3 o
|) о д м е т|) about dme t
Устройство дл измеренн разности тем« иератур, содержащее термисторы, источник п тани и измерительный прибор; о т л и чающеес тем, что, с целью повЫ.A device for measuring differences in that the temperature range contains thermistors, a source of power and a measuring device; For example, for the purpose of povY.
шеыи точности при измерении разности температур и устранени вли ни колебаний -напр жени питани на результат измерени , в качестве измерительного прибора испо; ь- g зован логометр, а термисторы включены юс; едовательно с рамками логометра и зашунтированы резисторами.neck and accuracy in measuring the temperature difference and eliminating the influence of fluctuations — the supply voltage on the measurement result, as a measuring device, iso; l is a logometer, and thermistors are included; consistently with the frame of the meter and shunted by resistors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1614994A SU445855A1 (en) | 1971-01-25 | 1971-01-25 | Device for measuring temperature differences |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1614994A SU445855A1 (en) | 1971-01-25 | 1971-01-25 | Device for measuring temperature differences |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU445855A1 true SU445855A1 (en) | 1974-10-05 |
Family
ID=20464400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1614994A SU445855A1 (en) | 1971-01-25 | 1971-01-25 | Device for measuring temperature differences |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU445855A1 (en) |
-
1971
- 1971-01-25 SU SU1614994A patent/SU445855A1/en active
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