inglês para português Tecn./Engenharia Eletrônica/engenharia elétrica métodos de ensaio

Before performing a test, clean the sensor in clean isopropyl alcohol, and blow dry using dry compressed air.
This step should be repeated until all signs of fuel residual have been removed from the sensor.
If either an AIR reading of ZERO larger than +2 pS/m is observed or the user suspects that the unit is not reading correctly, complete the following:

leitura (de) zero do ar??

leitura do ar Zero??