SunPower CryoTel MT, Руководство по эксплуатации

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Sunpower Inc. CryoTel MT Operating Instructions version 4
11
Figure 7: Rear Pressure Vessel End Plate and Power Cable Wire Harness
VIII. Temperature Sensor
For proper operation of the CryoTel
TM
controller it is necessary to mount a temperature sensor
to the object being cooled. The sensor allows the controller to measure and control the cooled
object s temperature. The sensor feedback also controls the cooler s power ramp-up. If the
sensor is not installed properly, the cooling capacity of the cryocooler will be severely limited
and temperature control will not function.
The controller sensor may be either a PT-111 platinum RTD or equivalent. Sunpower
packages the PT-111 in a copper disk so that the sensors are identical in size, shape and wiring.
Figure 8 shows the sensor and the wiring harness connecting sensor to controller.
Figure 8: Temperature Sensor and Wiring Harness
The temperature sensor is encased in a small copper slug. Use an M3 screw in the 3mm drilled
hole to attach the sensor to the test cap or to the object being cooled. Use a thin layer of
Temperature
Sensor
Wiring
Harness
Service
Tube
Pressure
Vessel
- Feedthrough
+ Feedthrough
Service Tube Elbow
Power
Cable