DE1871768U - TEMPERATURE SENSOR FOR ELECTRIC RESISTANCE THERMOMETER. - Google Patents
TEMPERATURE SENSOR FOR ELECTRIC RESISTANCE THERMOMETER.Info
- Publication number
- DE1871768U DE1871768U DE1961H0038433 DEH0038433U DE1871768U DE 1871768 U DE1871768 U DE 1871768U DE 1961H0038433 DE1961H0038433 DE 1961H0038433 DE H0038433 U DEH0038433 U DE H0038433U DE 1871768 U DE1871768 U DE 1871768U
- Authority
- DE
- Germany
- Prior art keywords
- thin
- protective tube
- temperature sensor
- walled protective
- flanges
- 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
- 230000001681 protective effect Effects 0.000 claims description 14
- 238000004804 winding Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
Description
Temperaturfühler für elektrische Widerstandsthermometer. Temperature sensors for electrical resistance thermometers .
Beschreibung. Description .
Temperaturfühler für elektrische Widerstandsthermometer bestehen üblicherweise aus der Widerstandswicklung und einem diese Wicklung allseitig umschließenden, meist rohrförmigen Schutzkörper. Werden die Temperaturfühler zur Messung der Temperatur ruhender oder bewegter Gase verwendet, so ist es zweckmässig, den Schutzkörper möglichst dünnwandig auszuführen, um die Ansprechzeit des Temperaturfühlers sowie die Eigenwärme des Schutzkörpers kleinzuhalten.Temperature sensors for electrical resistance thermometers usually consist of the resistance winding and a this winding on all sides enclosing, usually tubular protective body. Are the temperature sensors used to measure the Temperature of stationary or moving gases is used, it is advisable to make the protective body as thin-walled as possible, in order to keep the response time of the temperature sensor and the inherent heat of the protective body small.
Diese dünnwandigen Schutzkörper sind aber hochempfindlich gegen mechanische Beschädigung. Es ist bekannt, die Empfindlichkeit gegen mechanische Beschädigung derartiger Temperaturfühler durch Anbringen/eines weiteren, mechanisch stabilen und mit Löchern versehenen Schutzrohres über den die Widerstandswicklung umschließenden dünnwandigen Schutzkörper zu vermindern. Diese Ausführungsart hat aber - insbesondere bei strömenden Gasen - den Nachteil, daß die Umspülung der Meßwicklung des Temperaturfühlers durch das:äußere gelochte Schutzrohr behindert wird, ebenso wird die Trägheit des Temperaturfühlers durch die Eigenwärme des zweiten Schutzrohres erhöht. Die Herstellung eines an seiner Wandung gelochten Rohres erfordert ausserdem einen hohen Aufwand an Bearbeitungszeit. However, these thin-walled protective bodies are highly sensitive against mechanical damage. It is known that such temperature sensors are sensitive to mechanical damage by attaching / another, mechanically stable and perforated protective tube over which the resistance winding to reduce surrounding thin-walled protective body. However, this type of construction has - especially with flowing gases - the disadvantage that the flow around the measuring winding of the temperature sensor through the: outer perforated Protective tube is obstructed, as is the inertia of the temperature sensor by the inherent heat of the second protective tube elevated. The production of a tube with a perforation on its wall also requires a great deal of processing time.
Zweck der Erfindung ist es, einen Temperaturfühler herzustellen, der die obenangeführten Nachteile in vollem Umfange vermeidet. Die Abbildung zeigt das Prinzip der Neuerung. Das dünnwandige, die Widerstandswicklung (1) umfassende Schutzrohr (2) wird in einem oberen Flansch (3) und einem unteren Flansch (4) gehaltert. Die Flansche (3 und 4) werden durch runde oder flache stabile Längsverbindungsstege (5) verbunden. Durch ihre kleinen Maße und Oberfläche verursachen diese Verbindungsstege eine wesentlich kleinere Wärmeträgheit als ein gelochtes Rohr;The purpose of the invention is to produce a temperature sensor which completely avoids the disadvantages mentioned above. The illustration shows the principle of innovation. The thin-walled protective tube (2) encompassing the resistance winding (1) is held in an upper flange (3) and a lower flange (4). The flanges (3 and 4) are round or flat stable longitudinal connecting webs (5) connected. Due to their small size and surface, these create connecting webs a significantly lower thermal inertia than a perforated pipe;
ANLAGESYSTEM
/ 5 /1260 We/ 5/1260 We
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1961H0038433 DE1871768U (en) | 1961-06-07 | 1961-06-07 | TEMPERATURE SENSOR FOR ELECTRIC RESISTANCE THERMOMETER. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1961H0038433 DE1871768U (en) | 1961-06-07 | 1961-06-07 | TEMPERATURE SENSOR FOR ELECTRIC RESISTANCE THERMOMETER. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1871768U true DE1871768U (en) | 1963-05-09 |
Family
ID=33142137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1961H0038433 Expired DE1871768U (en) | 1961-06-07 | 1961-06-07 | TEMPERATURE SENSOR FOR ELECTRIC RESISTANCE THERMOMETER. |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1871768U (en) |
-
1961
- 1961-06-07 DE DE1961H0038433 patent/DE1871768U/en not_active Expired
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