Rhodium Iron Temperature Sensor

Rhodium Iron Temperature Sensor

The rhodium iron thermometer has a wide temperature measurement range, and is not affected by ionizing radiation, and is less affected by the magnetic field environment at temperatures above 77K. The wire wound rhodium iron thermometer has strong stability and is mostly used as a secondary standard thermometer. The rhodium iron thermometer has a positive temperature coefficient and exhibits a monotonic change in the temperature measurement range. Between 100K and 273K, the resistance changes with temperature with good linearity.

Features

※ Long-term stability is the best;

※ The temperature curve above 100K has a linear response;

※ Wide range of temperature measurement;

※ Better resistance to radiation effects.

Parameter

※ Temperature range: 1.2K ~ 325K

※ Standard curve: none

※ Recommended excitation current: 1mA

※ Recommended power dissipation under excitation: 3μW@4.2K, 50μW@273K

※ Response time: 10S@273K

※ Radiation effect: can be used in ionizing radiation environment

※ Magnetic field influence: It is not recommended to use in a magnetic field environment with a temperature below 77K

※ Repeatability: ±5mK@77K (from 100 thermal shock tests from 300K to 77K)

Typical Curve Characteristics

Temperature Range

Typical Temperature And Resistance Relationship

External Dimensions And Package Dimensions

Physical Properties

Size: Φ2.2mm*20mm

Mass: 500mg

Leads: 2

Bare chip package: Rhodium-iron alloy is packaged inside the ceramic,

Externally encapsulated in an alumina case