GB290493A - Improvements in and relating to thermo-electric pyrometers - Google Patents
Improvements in and relating to thermo-electric pyrometersInfo
- Publication number
- GB290493A GB290493A GB2422127A GB2422127A GB290493A GB 290493 A GB290493 A GB 290493A GB 2422127 A GB2422127 A GB 2422127A GB 2422127 A GB2422127 A GB 2422127A GB 290493 A GB290493 A GB 290493A
- Authority
- GB
- United Kingdom
- Prior art keywords
- indicator
- temperature
- spring
- range
- spindle
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
- G01K7/14—Arrangements for modifying the output characteristic, e.g. linearising
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
290,493. Orchard, J. L., and Cambridge Instrument Co., Ltd. Sept. 14, 1927. Pyrometers.-In a thermo-electric pyrometer for a definite narrow range of temperature, in which a galvanometer &c. is used as an indicator, a bimetallic compensator for variations in cold junction temperature is arranged also to compensate for the temperature-resistance coefficient of the indicator at the said range. The necessity for using a high resistance with the indicator to compensate for the said coefficient is thus avoided and consequently a more open scale can be used for the range of the indicator. The bimetallic compensator 2 is attached at one end to one end of the spring 1 controlling the moving coil of the indicator, and at the other end to an arm 3 secured to a. spindle 4 carrying a pinion 6 and an arm 5. The pinion 6 is engaged by a pivoted rack 8 connected by a spring 12 to a spring-controlled plunger 11. By operating the plunger the spindle 4 is rotated so as to impart initial set to the spring 1 to prevent the indicator pointer from moving until the lower limit of the temperature range of the instrument is reached. The rotation of the spindle 4 is limited by stops 9, 10 with which the arm 5 coarts. A comparatively small series resistance may be used in addition to the bimetallic member for compensating the temperature-resistance coefficient of the indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2422127A GB290493A (en) | 1927-09-14 | 1927-09-14 | Improvements in and relating to thermo-electric pyrometers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2422127A GB290493A (en) | 1927-09-14 | 1927-09-14 | Improvements in and relating to thermo-electric pyrometers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB290493A true GB290493A (en) | 1928-05-17 |
Family
ID=10208286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2422127A Expired GB290493A (en) | 1927-09-14 | 1927-09-14 | Improvements in and relating to thermo-electric pyrometers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB290493A (en) |
-
1927
- 1927-09-14 GB GB2422127A patent/GB290493A/en not_active Expired
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