Princeton 4300 User Manual

26 

PI-SCX System Manual 

Version 2.E 

 

26 

Operating temperature: 0ºC to +30ºC;  
Operating temperature range over which system specifications can be met: +18ºC to 

+23ºC 

Relative humidity <50% noncondensing.

Camera: Allow at least one inch of clearance for side and rear air vents. 
ST-133:  There is an internal fan located at the right side of the rear panel behind an 

exhaust opening.  Its purpose is simply to cool the controller electronics. This fan 

runs continuously whenever the controller is powered. Air enters the unit through 

ventilation openings on the side panels, flows past the warm electronic 

components as it rises, and is drawn out the rear of the controller by the fan. It is 

important that there be an adequate airflow for proper functioning. As long as 

both the controller’s intake ventilation openings and the fan exhaust opening 

aren’t obstructed, the controller will remain quite cool. 

The CCD is housed in the vacuum with the fiberoptic taper extending beyond the vacuum 

chamber with a thin Beryllium window to block visible light and to admit X-rays. The 

camera is shipped with a vacuum quality superior to the minimum required to assure 

proper operation of the system for an extended period of time without concern for the 

quality of the vacuum. See Appendix C for additional information.  

COOLANT IS HARMFUL IF SWALLOWED.                                                            
KEEP OUT OF REACH OF CHILDREN. 

PI-SCX cameras with water-assisted cooling or water-only cooling require circulating 

coolant (50:50 mixture of ethylene glycol and water) for proper operation. All hose 

connections should be secured with good quality hose clamps.  

 Users are advised to install a flow meter to monitor the rate. 

 

> 1 liter/minute. 

 

3 liters/minute (minimum). 

 

3 liters/minute (minimum).  

 25 psig (maximum).  

Two quick-disconnect coolant ports are supplied with a water-

cooled system and are mounted at the sides of the camera. For the best cooling, make 

the hose connections to the Inlet and Outlet ports as shown in the outline drawing on 

page 38. Use 1/4" thin-wall tubing.