DE920516C - Filling liquid for thermometer - Google Patents
Filling liquid for thermometerInfo
- Publication number
- DE920516C DE920516C DEB20027A DEB0020027A DE920516C DE 920516 C DE920516 C DE 920516C DE B20027 A DEB20027 A DE B20027A DE B0020027 A DEB0020027 A DE B0020027A DE 920516 C DE920516 C DE 920516C
- Authority
- DE
- Germany
- Prior art keywords
- thermometer
- thermometers
- filling liquid
- diphenyl
- filling
- 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
- 239000007788 liquid Substances 0.000 title claims description 7
- 235000010290 biphenyl Nutrition 0.000 claims description 7
- 239000004305 biphenyl Substances 0.000 claims description 7
- 125000006267 biphenyl group Chemical group 0.000 claims description 7
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 7
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 claims description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- 208000005374 Poisoning Diseases 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K5/00—Measuring temperature based on the expansion or contraction of a material
- G01K5/02—Measuring temperature based on the expansion or contraction of a material the material being a liquid
- G01K5/04—Details
- G01K5/12—Selection of liquid compositions
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
Füllflüssigkeit für Thermometer Bekannt sind Thermometer mit ÖIfüllung für den Temperaturbereich bis 1800 Über diesen Temperaturbereich hinaus sind die bisher bekannten Füllflüssigkeiten thermisch nicht genügend stabil. Für technische Spezialzwecke sind indes Thermometer mit nichtmetallischer Füllung sehr erwünscht, beispielsweise zur Temperaturmessung von Kunststoffschmelzen, die im Ultrakurzwellenfeld geschmolzen werden, aber auch für Trockenschränke mit Aluminiumummantelung, bei denen der Bruch eines Quecksilberthermometers Werkstoffzerstörungen und Vergiftungsgefahr nach sich zieht.Filling liquid for thermometers Thermometers with an oil filling are known for the temperature range up to 1800. Beyond this temperature range are the previously known filling liquids are not sufficiently thermally stable. For technical Special purposes, however, thermometers with non-metallic filling are very desirable, for example to measure the temperature of plastic melts in the ultra-short wave field melted, but also for drying cabinets with aluminum cladding which the breakage of a mercury thermometer material destruction and risk of poisoning entails.
Es wurde nun gefunden, daß Gemische von Diphenyloxyd mit Diphenyl, insbesondere das zur Wärmeübertragung im chemischen Apparatebau bekannte Eutektikum von 730/0 Diphenyloxyd und 270/o Diphenyl, sich als Thermometerflüssigkeit ausgezeichnet eignen. Das genannte Eutektikum zeigt keine Adhäsion an Glasoberflächen, verhält sich also ebenso wie Quecksilber, hat geringe Viskosität und ist bis 3800 thermisch stabil. Auch Gemische von Naphthalin mit Diphenyl sind brauchbar. Die zur Anwendung kommenden Verbindungen müssen für den angestrebten Zweck sehr rein sein; ihre Reinigung erfolgt zweckmäßig durch Fraktionierung im Vakuum. It has now been found that mixtures of diphenyloxide with diphenyl, in particular the eutectic known for heat transfer in chemical apparatus engineering of 730/0 diphenyloxide and 270 / o diphenyl, are excellent as thermometer fluids suitable. The mentioned eutectic shows no adhesion to glass surfaces, behaves So just like mercury, it has a low viscosity and is thermal up to 3800 stable. Mixtures of naphthalene with diphenyl can also be used. The application Coming connections must be very pure for the intended purpose; their cleaning is expediently carried out by fractionation in vacuo.
Aus der Tatsache, daß Toluol und Xylol als Füllflüssigkeit für Thermometer bekannt sind, kann nicht darauf geschlossen werden, daß auch Diphenyl, weil es zwei Benzolringe besitzt, in den genannten Mischungen hierfür geeignet ist. Toluol und Xylol sind nur als Füllflüssigkeiten für Tieftemperaturthermometer geeignet, deren Temperaturbereich sich von etwa + 20 bis - iooc' ersfreckt. From the fact that toluene and xylene are used as filling liquids for thermometers are known, it cannot be concluded that diphenyl is also, because there are two Has benzene rings in the mentioned mixtures are suitable for this is. Toluene and xylene are only used as filling liquids for cryogenic thermometers suitable, the temperature range of which extends from about + 20 to -10oc '.
Füllflüssigkeiten für Hochtemperaturthermometer müssen demgegenüber Eigenschaften aufweisen, die für die Verwendung in Tieftemperaturthermometern keine Rolle spielen, nämlich beispielsweise thermische Beständigkeit, geringen Dampfdruck und gute Kohäsion. Weder Benzol ist für die vorliegenden Zwecke geeignet noch Naphthalin, das ebenso wie Diphenyl zwei Benzolringe enthält.In contrast, filling liquids for high-temperature thermometers must Have properties that are not suitable for use in cryogenic thermometers Play a role, namely, for example, thermal resistance, low vapor pressure and good cohesion. Neither benzene is suitable for the present purposes, nor naphthalene, which, like diphenyl, contains two benzene rings.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB20027A DE920516C (en) | 1952-04-18 | 1952-04-18 | Filling liquid for thermometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB20027A DE920516C (en) | 1952-04-18 | 1952-04-18 | Filling liquid for thermometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE920516C true DE920516C (en) | 1954-11-25 |
Family
ID=6960210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEB20027A Expired DE920516C (en) | 1952-04-18 | 1952-04-18 | Filling liquid for thermometer |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE920516C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1139082A3 (en) * | 2000-03-28 | 2001-10-17 | Roland Diehm | Expansion liquid for thermometer |
-
1952
- 1952-04-18 DE DEB20027A patent/DE920516C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1139082A3 (en) * | 2000-03-28 | 2001-10-17 | Roland Diehm | Expansion liquid for thermometer |
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