Catalog excerpts
Rhodium-Iron RTDs ■ Good long term stability: temperature range from Rhodium-Iron RTDs Rhodium-iron temperature sensors offer a positive temperature coefficient, monotonic response over a wide temperature range, and high resistance Linear response above 100 K ionizing radiation The RF-800 rhodium-iron resistance sensor features monotonically decreasing resistivity from 500 K to 0.65 K, although sensitivity (dR/dT) falls off in the region of 30 K. From 100 K to 273 K the resistance changes linearly with temperature to within 1 K. RF-800-4 sensors also exhibit monotonic response at higher temperatures, hence their adaptability for use over the broad range from 1.4 K to 500 K. Typical Rhodium-Iron Resistance Values Typical Rhodium-Iron Sensitivity Values Typical Rhodium-Iron Dimensionless Sensitivity Values Lake Shore Cryotronics, Inc. e-mail: info@lakeshore.com
Open the catalog to page 162 Rhodium-Iron RTDs Sensors Specifications Range of Use Standard curve Not applicable Minimum Limit Recommended excitation RF-800: 1 mA Maximum Limit 0.65 K 500 K2 RF-800-4 Dissipation at recommended excitation 10 µW at 4.2 K, 250 µW at 273 K Usable to 800 K, but large and erratic temperature shifts can occur at lower temperatures without proper thermal conditioning Typical Magnetic Field-Dependent Temperature Errors5 ∆T/T (%) at B (magnetic induction) 2 Thermal response time RF-800: 10 s at 273 K Use in radiation Recommended for use in ionizing radiation environments—see Appendix B Use in...
Open the catalog to page 2Rhodium-Iron RTDs For information on rhodium-iron sensor packaging, see page 25. Sensors 63 Ordering Information Uncalibrated sensor—Specify the model number in the left column only, for example RF-100T-AA. Calibrated sensor—Add the calibration range suffix code to the end of the model number, for example RF-100T-AA-1.4L. Rhodium-Iron RTD Calibration Range Suffix Codes Numeric figure is the low end of the calibration Letters represent the high end: L=325 K, H=500 K Model number Uncal 1.4L 1.4H RF-800-4 Other packaging available through special order—consult Lake Shore To add length to...
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