Of the following safety features of pressure injectors, which one is used to set the proper PSI compatible with the catheter and vessel to be visualized?

The pressure limiting device is essential in the functioning of pressure injectors used in vascular interventional procedures. This device is specifically designed to prevent the injection of contrast media at pressures that exceed what is safely tolerated by the catheter and the vascular structure being imaged.

By setting the appropriate PSI (pounds per square inch), the pressure limiting device ensures that the pressure does not exceed predetermined safe levels, which minimizes the risk of catheter rupture or vascular injury. This feature is crucial because different catheters and vessels have varying tolerances for pressure; thus, the pressure limiting device plays a vital role in tailoring the pressure settings to match the specific conditions of the procedure, ensuring patient safety and effective imaging results.

In contrast, the volume limiting device controls the total volume of contrast media injected, while rate rise control affects how quickly the contrast is injected. The function monitoring device keeps track of the injector's operational status but doesn't influence pressure settings in relation to the catheter and vessel, which is the key aspect of this question.