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| 型號： | P0K5.1206.2P.B.010.M |
| 廠商： | INNOVATIVE SENSOR TECHNOLOGY AG |
| 元件分類： | RTD Sensor |
| 英文描述： | RTD TEMP SENSOR-PLATINUM, 500ohm, RECTANGULAR, SURFACE MOUNT |
| 封裝： | PLATINUM TEMPERATURE SENSORS |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 336K |
| 代理商： | P0K5.1206.2P.B.010.M |
Platinum Temperature Sensors
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General Information
In many industrial sectors and fields of research, temperature measurement is one of the most important
parameters which determines product quality, security, and reliability. Temperature sensors are available in
several types all of which have a unique performance characteristic. The performance capability of the various
sensors are a result of the manufacturing process and component materials associated with their technologies
and intended application. It is IST Charter to produce sensors that exceed the industry standard of temperature
measurement with additional capability to directly replace older traditional methods and provide the maximum
performance. To this end IST has concentrated its development and manufacturing on the process and materials
of high-end thin-film temperature sensors. Additionally these processes, partially derived from the semiconductor
industry allows IST to manufacture sensors in very small dimensions. Because of their low thermic mass thin-film
temperature sensors exhibit a very short response time. IST core technology and processes results in thin-film
sensors that combine the good features of traditional wire wound platinum sensors such as accuracy, long-term
stability, repeatability, interchangeability and wide temperature range, with the advantages of mass-production,
which contributes to their optimal price/performance ratio.
Sensor Construction
The temperature sensor consists of a photo-lithographically structured, high-purity platinum coating arranged in
the shape of a meander. The platinum thin-film structures are laser trimmed to form resistive paths with very
precisely defined basic value of the resistivity. The sensors are covered with a glass passivation layer; to protect
the sensor against mechanical and chemical damage. The bonded leadwires which are additionally covered with
a drop of glass make electrical contacts to the resistive structure.
Typical Features
– brief response time
– small dimensions
– excellent long-term stability
– resistant against vibration and temperature shocks
– low self-heating rate
– simple interchangeability
– excellent price/performance ratio
Response Time
The response time T0.63 is the time in seconds the sensors need to respond to 63% of the change in temperature.
The response time depends on the sensor dimensions, the termal contact resistance and the encloser medium.
Long-Term Stability
The change of ohmage after 1,000 hrs at maximum operating temperature until the 7W types amounts to less
than 0.03%.
Self Heating
To measure the resistance an electric current has to flow through the element, which will generate heat energy
resulting in errors of measurement. To minimize the error, the testing current should be kept low (approximately
1 mA for pt-100). Temperature error T = RI
2 / E; with E = self-heating coefficient in mW/K R = resistance in k,
I = measuring current in mA
Measurement current
The amount of thermal transfer from the sensor in application determines how much measuring current can be
applied. There is no bottom limit of the measurement current with platinum thin-film. The measurement current
depend highly on the application in use. For sensors from 750°C - 1000°C (7W, 8W, 10W) the measurement
current must limited at max. 1 mA.
We recommend at:
100 :
typ. 1 mA
max. 5 mA
500 :
typ. 0.5 mA
max. 3 mA
1000 :
typ. 0.3 mA
max. 2 mA
2000 :
typ. 0.2 mA
max. 1 mA
10000 :
typ. 0.1 mA
max. 0.3 mA
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