Temperature control system for nuclear magnetic resonance spectrometer

Abstract

The invention discloses a temperature control system for a nuclear magnetic resonance spectrometer, which comprises a photoelectric transducer, a temperature controller, and a temperature change module; the temperature change of a sample to be detected causes the deformation of the sample so as to cause the change of an optical path; optical signals generated by the change of the optical path are transmitted to the photoelectric transducer through an optical fiber; the photoelectric transducer converts the optical signals to electric signals and transmits the electric signals to the temperature controller; and the temperature controller generates corresponding control signals according to the input electric signals to control the temperature change module to adjust the temperature of the sample, wherein the temperature change module comprises a refrigeration module, a heating module and a heat exchange pipeline. The temperature control system can ensure that the temperature in the sample testing process is maintained to be constant, also can freely set the temperature of the sample in a temperature range allowed by experiments, and can conveniently and accurately control the temperature of the sample according to the experiment requirements so as to meet the requirements of special experiments, and has no influence on the work of the nuclear magnetic resonance spectrometer.

Description

technical field [0001] The invention relates to a temperature control system, in particular to a temperature control system used in nuclear magnetic resonance instruments. Background technique [0002] In the field of research and analysis of nuclear magnetic resonance instruments, there are many requirements for accurate measurement and control of sample temperature. Traditional nuclear magnetic resonance instruments cannot achieve real-time, simultaneous and direct measurement and control of samples. Sometimes the temperature of the sample is measured before the experiment, and then Then put it in the sample test tube, and, in the course of the experiment, the temperature of the sample may also change. Therefore, the sample temperature measurement result of the existing temperature control system is not very accurate, and can only be an approximate value. [0003] Calibration measurements are the method used in traditional temperature control systems. In the traditional v...

AI Technical Summary

Problems solved by technology

The change of sample temperature will not only affect the accuracy of the sample testing process, but also make it impossible to carry out some experiments that require high sample temperature. These defects limit the application and development of nuclear magnetic resonance to a large extent.

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