Larry there is no conversion factor or formula for converting lead crusher (LUP) to transducer pressures (PSI). For aparticular load 8,000 LUP may infact be equal to 10,000 PSI. You have to test the same load using the lead crusher method and then test it with a transducer to know for sure and then it is only valid for that particular load,if it were ole Rocketman could have whipped out a conversion formula in about 30 seconds with his pocket size Post bamboo slide rule.