Injector pressure calibration system and method

A calibration system for calibrating a pressure output of a drive member of a fluid injector, the calibration system comprising:

• a housing configured for connecting to the fluid injector;
• a drive member engagement portion configured for contacting a drive member of the fluid injector;
• a compressible member having a known modulus of compression connected at its proximal end to the drive member engagement portion, wherein the compressible member is compressed with movement of the drive member of the fluid injector in a distal direction between a first, uncompressed position and a second, at least partially compressed position;
• and
• a sensor connected to the compressible member, wherein the sensor is configured for measuring a displacement of the drive member when the compressible member is in the second, at least partially compressed position.

A method of calibrating a pressure output of a drive member of a fluid injector, the method comprising:

• connecting a calibration system to the fluid injector, the calibration system comprising:
• a housing configured for connecting to the fluid injector;
• a drive member engagement portion configured for contacting a drive member of the fluid injector;
• a compressible member having a known modulus of compression connected at its proximal end to the drive member engagement portion, wherein the compressible member is compressed with movement of the drive member of the fluid injector in a distal direction between a first, uncompressed position and a second, at least partially compressed position;
• and
• a sensor connected to the compressible member, wherein the sensor is configured for measuring one of a force imparted by the drive member and a displacement of the drive member when the compressible member is in the second, at least partially compressed position;
• contacting a drive member of the fluid injector with the drive member engagement portion of the calibration system;
• driving a motor of the fluid injector to move the drive member and compress the compressible member from the first, uncompressed position to the second, at least partially compressed position;
• and
• generating a measurement signal by the sensor based on the force imparted on the compressible member by the drive member or the displacement of the drive member when the compressible member is in the second, at least partially compressed position.