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Rhodium iron temperature sensor
The temperature range of rhodium iron thermometer is very wide, not affected by ionizing radiation, and is less affected by magnetic field environment
Product details
characteristic
Excellent long-term stability;
The temperature curve above 100K shows a linear response;
Better resistance to radiation effects.
parameter
※ Temperature range: 1.2K~325K;
※ Standard curve: None
Recommended excitation current: 1mA
※ Recommended dissipated power under incentive:3μW@4.2K， 50μW@273K
※ Response time: 10S@273K
Radiation impact: Can be used in ionizing radiation environments
※ Magnetic field influence: Not recommended for use in magnetic field environments below 77K temperature
Repeatability: ± 5mK@77K (Based on 100 thermal shock tests from 300K to 77K)
Typical curve characteristics
Calibration accuracy and range
model
calibration accuracy
calibration range
RI20-BC-1.2L
0.1K
1.2K-300K
RI20-FK-1.2L
0.1K
1.2K-300K
Accuracy of thermometer=(Calibration uncertainty) 2 +repeatability 2）0.5
Typical temperature and resistance relationship
T（k）
R（Ω）
dR/dT(Ω/K)
1.2K
2.3674
0.2802
4.2K
3.1602
0.2319
20K
5.251
0.0771
77K
11.898
0.1802
150K
26.308
0.1986
273K
50
0.1907
External dimensions and packaging dimensions
Size:Φ2.2mm*20mm
Quality:500mg
Lead wire:2root
Bare chip packaging form: rhodium iron alloy encapsulated inside the ceramic, Externally encapsulated within an alumina shell
physical property
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