Cryogenic Sensor Signal Conditioning Unit

摘要

A cryogenic system including a source of cryogen fluid, a cryogenic chamber receiving the cryogen fluid to cool the cryogenic chamber, an exhaust for venting spent cryogen from the cryogenic chamber, a cryogenic sensor positioned in the cryogenic chamber to monitor a condition, and a cryogenic signal conditioning unit associated with the cryogenic sensor. The cryogenic signal conditioning unit includes a software programmable current source, a programmable gain amplifier, an analog to digital converter, a memory, and a user interface.

主权项

1. A cryogenic system comprising:
a source of cryogen fluid; a cryogenic chamber receiving the cryogen fluid to cool the cryogenic chamber; an exhaust for venting spent cryogen from the cryogenic chamber; a cryogenic sensor positioned in the cryogenic chamber to monitor a condition; and a cryogenic signal conditioning unit associated with the cryogenic sensor and including
a software programmable current source outputting an excitation current to the cryogenic sensor,a programmable gain amplifier receiving a sensor output from the cryogenic sensor and amplifying the sensor output into an amplified output,an analog to digital converter receiving and converting the amplified output, and outputting a data output,a memory in communication with the software programmable current source, the analog to digital converter, and the programmable gain amplifier, anda user interface in communication with the software programmable current source, the analog to digital converter, the programmable gain amplifier, and the memory, wherein the user interface uses an industry standard communication protocol, wherein the user interface communicates with the software programmable current source to set a value of the excitation current, and wherein the data output is saved to the memory.