Hate to be a party pooper but the short answer is you can not.
To complete the dry side occulsion pressure measurement you need to use the the approved pressurement tool, - a load cell (mounted to a dummy syringe) (dry side occulsion pressure is a direct measurement of the force being applied by the pump drive system to the syringe plunger) with the relevent control box that allows you to zero the load cell etc. This system then gives you the applied force values to enter into the omnifuse calibration program to allow the right values to be written back to the pump software.
The tool is available from Smiths but it is made by Force Measurement Systems in Glasgow, who may be able to help you.